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CVE-2022-49287 (GCVE-0-2022-49287)

Vulnerability from cvelistv5 – Published: 2025-02-26 01:56 – Updated: 2026-08-05 08:54
VLAI
Title
tpm: fix reference counting for struct tpm_chip
Summary
In the Linux kernel, the following vulnerability has been resolved: tpm: fix reference counting for struct tpm_chip The following sequence of operations results in a refcount warning: 1. Open device /dev/tpmrm. 2. Remove module tpm_tis_spi. 3. Write a TPM command to the file descriptor opened at step 1. ------------[ cut here ]------------ WARNING: CPU: 3 PID: 1161 at lib/refcount.c:25 kobject_get+0xa0/0xa4 refcount_t: addition on 0; use-after-free. Modules linked in: tpm_tis_spi tpm_tis_core tpm mdio_bcm_unimac brcmfmac sha256_generic libsha256 sha256_arm hci_uart btbcm bluetooth cfg80211 vc4 brcmutil ecdh_generic ecc snd_soc_core crc32_arm_ce libaes raspberrypi_hwmon ac97_bus snd_pcm_dmaengine bcm2711_thermal snd_pcm snd_timer genet snd phy_generic soundcore [last unloaded: spi_bcm2835] CPU: 3 PID: 1161 Comm: hold_open Not tainted 5.10.0ls-main-dirty #2 Hardware name: BCM2711 [<c0410c3c>] (unwind_backtrace) from [<c040b580>] (show_stack+0x10/0x14) [<c040b580>] (show_stack) from [<c1092174>] (dump_stack+0xc4/0xd8) [<c1092174>] (dump_stack) from [<c0445a30>] (__warn+0x104/0x108) [<c0445a30>] (__warn) from [<c0445aa8>] (warn_slowpath_fmt+0x74/0xb8) [<c0445aa8>] (warn_slowpath_fmt) from [<c08435d0>] (kobject_get+0xa0/0xa4) [<c08435d0>] (kobject_get) from [<bf0a715c>] (tpm_try_get_ops+0x14/0x54 [tpm]) [<bf0a715c>] (tpm_try_get_ops [tpm]) from [<bf0a7d6c>] (tpm_common_write+0x38/0x60 [tpm]) [<bf0a7d6c>] (tpm_common_write [tpm]) from [<c05a7ac0>] (vfs_write+0xc4/0x3c0) [<c05a7ac0>] (vfs_write) from [<c05a7ee4>] (ksys_write+0x58/0xcc) [<c05a7ee4>] (ksys_write) from [<c04001a0>] (ret_fast_syscall+0x0/0x4c) Exception stack(0xc226bfa8 to 0xc226bff0) bfa0: 00000000 000105b4 00000003 beafe664 00000014 00000000 bfc0: 00000000 000105b4 000103f8 00000004 00000000 00000000 b6f9c000 beafe684 bfe0: 0000006c beafe648 0001056c b6eb6944 ---[ end trace d4b8409def9b8b1f ]--- The reason for this warning is the attempt to get the chip->dev reference in tpm_common_write() although the reference counter is already zero. Since commit 8979b02aaf1d ("tpm: Fix reference count to main device") the extra reference used to prevent a premature zero counter is never taken, because the required TPM_CHIP_FLAG_TPM2 flag is never set. Fix this by moving the TPM 2 character device handling from tpm_chip_alloc() to tpm_add_char_device() which is called at a later point in time when the flag has been set in case of TPM2. Commit fdc915f7f719 ("tpm: expose spaces via a device link /dev/tpmrm<n>") already introduced function tpm_devs_release() to release the extra reference but did not implement the required put on chip->devs that results in the call of this function. Fix this by putting chip->devs in tpm_chip_unregister(). Finally move the new implementation for the TPM 2 handling into a new function to avoid multiple checks for the TPM_CHIP_FLAG_TPM2 flag in the good case and error cases.
Severity
7 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-27 18:16 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: fdc915f7f71939ad5a3dda3389b8d2d7a7c5ee66 , < 473a66f99cb8173c14138c5a5c69bfad04e8f9ac (git)
Affected: fdc915f7f71939ad5a3dda3389b8d2d7a7c5ee66 , < cb64bd038beacb4331fe464a36c8b5481e8f51e2 (git)
Affected: fdc915f7f71939ad5a3dda3389b8d2d7a7c5ee66 , < a27ed2f3695baf15f9b34d2d7a1f9fc105539a81 (git)
Affected: fdc915f7f71939ad5a3dda3389b8d2d7a7c5ee66 , < 290e05f346d1829e849662c97e42d5ad984f5258 (git)
Affected: fdc915f7f71939ad5a3dda3389b8d2d7a7c5ee66 , < 662893b4f6bd466ff9e1cd454c44c26d32d554fe (git)
Affected: fdc915f7f71939ad5a3dda3389b8d2d7a7c5ee66 , < 2f928c0d5c02dbab49e8c19d98725c822f6fc409 (git)
Affected: fdc915f7f71939ad5a3dda3389b8d2d7a7c5ee66 , < 6e7baf84149fb43950631415de231b3a41915aa3 (git)
Affected: fdc915f7f71939ad5a3dda3389b8d2d7a7c5ee66 , < 7e0438f83dc769465ee663bb5dcf8cc154940712 (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.12
Unaffected: 0 , < 4.12 (semver)
Unaffected: 4.14.276 , ≤ 4.14.* (semver)
Unaffected: 4.19.238 , ≤ 4.19.* (semver)
Unaffected: 5.4.189 , ≤ 5.4.* (semver)
Unaffected: 5.10.110 , ≤ 5.10.* (semver)
Unaffected: 5.15.33 , ≤ 5.15.* (semver)
Unaffected: 5.16.19 , ≤ 5.16.* (semver)
Unaffected: 5.17.1 , ≤ 5.17.* (semver)
Unaffected: 5.18 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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              "userInteraction": "NONE",
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          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/char/tpm/tpm-chip.c",
            "drivers/char/tpm/tpm.h",
            "drivers/char/tpm/tpm2-space.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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              "status": "unaffected",
              "version": "4.19.238",
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              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.189",
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              "status": "unaffected",
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            {
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              "status": "unaffected",
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              "status": "unaffected",
              "version": "5.16.19",
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            {
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              "status": "unaffected",
              "version": "5.17.1",
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            {
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              "version": "5.18",
              "versionType": "original_commit_for_fix"
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      "cpeApplicability": [
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              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.14.276",
                  "versionStartIncluding": "4.12",
                  "vulnerable": true
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.238",
                  "versionStartIncluding": "4.12",
                  "vulnerable": true
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntpm: fix reference counting for struct tpm_chip\n\nThe following sequence of operations results in a refcount warning:\n\n1. Open device /dev/tpmrm.\n2. Remove module tpm_tis_spi.\n3. Write a TPM command to the file descriptor opened at step 1.\n\n------------[ cut here ]------------\nWARNING: CPU: 3 PID: 1161 at lib/refcount.c:25 kobject_get+0xa0/0xa4\nrefcount_t: addition on 0; use-after-free.\nModules linked in: tpm_tis_spi tpm_tis_core tpm mdio_bcm_unimac brcmfmac\nsha256_generic libsha256 sha256_arm hci_uart btbcm bluetooth cfg80211 vc4\nbrcmutil ecdh_generic ecc snd_soc_core crc32_arm_ce libaes\nraspberrypi_hwmon ac97_bus snd_pcm_dmaengine bcm2711_thermal snd_pcm\nsnd_timer genet snd phy_generic soundcore [last unloaded: spi_bcm2835]\nCPU: 3 PID: 1161 Comm: hold_open Not tainted 5.10.0ls-main-dirty #2\nHardware name: BCM2711\n[\u003cc0410c3c\u003e] (unwind_backtrace) from [\u003cc040b580\u003e] (show_stack+0x10/0x14)\n[\u003cc040b580\u003e] (show_stack) from [\u003cc1092174\u003e] (dump_stack+0xc4/0xd8)\n[\u003cc1092174\u003e] (dump_stack) from [\u003cc0445a30\u003e] (__warn+0x104/0x108)\n[\u003cc0445a30\u003e] (__warn) from [\u003cc0445aa8\u003e] (warn_slowpath_fmt+0x74/0xb8)\n[\u003cc0445aa8\u003e] (warn_slowpath_fmt) from [\u003cc08435d0\u003e] (kobject_get+0xa0/0xa4)\n[\u003cc08435d0\u003e] (kobject_get) from [\u003cbf0a715c\u003e] (tpm_try_get_ops+0x14/0x54 [tpm])\n[\u003cbf0a715c\u003e] (tpm_try_get_ops [tpm]) from [\u003cbf0a7d6c\u003e] (tpm_common_write+0x38/0x60 [tpm])\n[\u003cbf0a7d6c\u003e] (tpm_common_write [tpm]) from [\u003cc05a7ac0\u003e] (vfs_write+0xc4/0x3c0)\n[\u003cc05a7ac0\u003e] (vfs_write) from [\u003cc05a7ee4\u003e] (ksys_write+0x58/0xcc)\n[\u003cc05a7ee4\u003e] (ksys_write) from [\u003cc04001a0\u003e] (ret_fast_syscall+0x0/0x4c)\nException stack(0xc226bfa8 to 0xc226bff0)\nbfa0:                   00000000 000105b4 00000003 beafe664 00000014 00000000\nbfc0: 00000000 000105b4 000103f8 00000004 00000000 00000000 b6f9c000 beafe684\nbfe0: 0000006c beafe648 0001056c b6eb6944\n---[ end trace d4b8409def9b8b1f ]---\n\nThe reason for this warning is the attempt to get the chip-\u003edev reference\nin tpm_common_write() although the reference counter is already zero.\n\nSince commit 8979b02aaf1d (\"tpm: Fix reference count to main device\") the\nextra reference used to prevent a premature zero counter is never taken,\nbecause the required TPM_CHIP_FLAG_TPM2 flag is never set.\n\nFix this by moving the TPM 2 character device handling from\ntpm_chip_alloc() to tpm_add_char_device() which is called at a later point\nin time when the flag has been set in case of TPM2.\n\nCommit fdc915f7f719 (\"tpm: expose spaces via a device link /dev/tpmrm\u003cn\u003e\")\nalready introduced function tpm_devs_release() to release the extra\nreference but did not implement the required put on chip-\u003edevs that results\nin the call of this function.\n\nFix this by putting chip-\u003edevs in tpm_chip_unregister().\n\nFinally move the new implementation for the TPM 2 handling into a new\nfunction to avoid multiple checks for the TPM_CHIP_FLAG_TPM2 flag in the\ngood case and error cases."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerable path is a local character-device write on /dev/tpmrmN (tpmrm_open \u2192 tpm_common_write \u2192 tpm_try_get_ops \u2192 get_device), not reachable via network protocols or remote packet processing.\nAC:H - Triggering the UAF requires tpm_chip_unregister (e.g. rmmod/unbind of tpm_tis_spi) while the attacker still holds the FD; that teardown needs CAP_SYS_MODULE/admin and is outside the control of a tss-group opener, so success depends on a concurrent system state the attacker cannot initiate.\nPR:L - Opening/writing /dev/tpmrmN only requires access typically granted as 0660 tss:tss (udev), not real root/CAP_SYS_ADMIN; that is low privilege relative to init-namespace admin capabilities.\nUI:N - The attacker opens and writes their own FD; no separate victim action is required once the chip has been unregistered beneath that FD.\nS:U - Impact is use-after-free and potential privilege escalation inside the same host kernel authority; this is not a VM escape, IOMMU bypass, or other cross-boundary break.\nC:H - The bug is an explicit use-after-free of struct tpm_chip (refcount addition on 0), which enables reclaim/spray of the freed object and arbitrary kernel read primitives.\nI:H - The same tpm_chip UAF yields a corruptible kernel object for arbitrary write and control-flow hijacking via standard heap exploitation techniques.\nA:H - The UAF already produces a kernel warning/oops path on get_device after free and can crash the kernel even without a full exploit."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T08:54:36.034Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/473a66f99cb8173c14138c5a5c69bfad04e8f9ac"
        },
        {
          "url": "https://git.kernel.org/stable/c/cb64bd038beacb4331fe464a36c8b5481e8f51e2"
        },
        {
          "url": "https://git.kernel.org/stable/c/a27ed2f3695baf15f9b34d2d7a1f9fc105539a81"
        },
        {
          "url": "https://git.kernel.org/stable/c/290e05f346d1829e849662c97e42d5ad984f5258"
        },
        {
          "url": "https://git.kernel.org/stable/c/662893b4f6bd466ff9e1cd454c44c26d32d554fe"
        },
        {
          "url": "https://git.kernel.org/stable/c/2f928c0d5c02dbab49e8c19d98725c822f6fc409"
        },
        {
          "url": "https://git.kernel.org/stable/c/6e7baf84149fb43950631415de231b3a41915aa3"
        },
        {
          "url": "https://git.kernel.org/stable/c/7e0438f83dc769465ee663bb5dcf8cc154940712"
        }
      ],
      "title": "tpm: fix reference counting for struct tpm_chip",
      "x_generator": {
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49287",
    "datePublished": "2025-02-26T01:56:26.059Z",
    "dateReserved": "2025-02-26T01:49:39.302Z",
    "dateUpdated": "2026-08-05T08:54:36.034Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-49287",
      "date": "2026-09-15",
      "epss": "0.00275",
      "percentile": "0.19932"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49287\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-02-26T07:01:05.557\",\"lastModified\":\"2026-08-04T10:17:42.947\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ntpm: fix reference counting for struct tpm_chip\\n\\nThe following sequence of operations results in a refcount warning:\\n\\n1. Open device /dev/tpmrm.\\n2. Remove module tpm_tis_spi.\\n3. Write a TPM command to the file descriptor opened at step 1.\\n\\n------------[ cut here ]------------\\nWARNING: CPU: 3 PID: 1161 at lib/refcount.c:25 kobject_get+0xa0/0xa4\\nrefcount_t: addition on 0; use-after-free.\\nModules linked in: tpm_tis_spi tpm_tis_core tpm mdio_bcm_unimac brcmfmac\\nsha256_generic libsha256 sha256_arm hci_uart btbcm bluetooth cfg80211 vc4\\nbrcmutil ecdh_generic ecc snd_soc_core crc32_arm_ce libaes\\nraspberrypi_hwmon ac97_bus snd_pcm_dmaengine bcm2711_thermal snd_pcm\\nsnd_timer genet snd phy_generic soundcore [last unloaded: spi_bcm2835]\\nCPU: 3 PID: 1161 Comm: hold_open Not tainted 5.10.0ls-main-dirty #2\\nHardware name: BCM2711\\n[\u003cc0410c3c\u003e] (unwind_backtrace) from [\u003cc040b580\u003e] (show_stack+0x10/0x14)\\n[\u003cc040b580\u003e] (show_stack) from [\u003cc1092174\u003e] (dump_stack+0xc4/0xd8)\\n[\u003cc1092174\u003e] (dump_stack) from [\u003cc0445a30\u003e] (__warn+0x104/0x108)\\n[\u003cc0445a30\u003e] (__warn) from [\u003cc0445aa8\u003e] (warn_slowpath_fmt+0x74/0xb8)\\n[\u003cc0445aa8\u003e] (warn_slowpath_fmt) from [\u003cc08435d0\u003e] (kobject_get+0xa0/0xa4)\\n[\u003cc08435d0\u003e] (kobject_get) from [\u003cbf0a715c\u003e] (tpm_try_get_ops+0x14/0x54 [tpm])\\n[\u003cbf0a715c\u003e] (tpm_try_get_ops [tpm]) from [\u003cbf0a7d6c\u003e] (tpm_common_write+0x38/0x60 [tpm])\\n[\u003cbf0a7d6c\u003e] (tpm_common_write [tpm]) from [\u003cc05a7ac0\u003e] (vfs_write+0xc4/0x3c0)\\n[\u003cc05a7ac0\u003e] (vfs_write) from [\u003cc05a7ee4\u003e] (ksys_write+0x58/0xcc)\\n[\u003cc05a7ee4\u003e] (ksys_write) from [\u003cc04001a0\u003e] (ret_fast_syscall+0x0/0x4c)\\nException stack(0xc226bfa8 to 0xc226bff0)\\nbfa0:                   00000000 000105b4 00000003 beafe664 00000014 00000000\\nbfc0: 00000000 000105b4 000103f8 00000004 00000000 00000000 b6f9c000 beafe684\\nbfe0: 0000006c beafe648 0001056c b6eb6944\\n---[ end trace d4b8409def9b8b1f ]---\\n\\nThe reason for this warning is the attempt to get the chip-\u003edev reference\\nin tpm_common_write() although the reference counter is already zero.\\n\\nSince commit 8979b02aaf1d (\\\"tpm: Fix reference count to main device\\\") the\\nextra reference used to prevent a premature zero counter is never taken,\\nbecause the required TPM_CHIP_FLAG_TPM2 flag is never set.\\n\\nFix this by moving the TPM 2 character device handling from\\ntpm_chip_alloc() to tpm_add_char_device() which is called at a later point\\nin time when the flag has been set in case of TPM2.\\n\\nCommit fdc915f7f719 (\\\"tpm: expose spaces via a device link /dev/tpmrm\u003cn\u003e\\\")\\nalready introduced function tpm_devs_release() to release the extra\\nreference but did not implement the required put on chip-\u003edevs that results\\nin the call of this function.\\n\\nFix this by putting chip-\u003edevs in tpm_chip_unregister().\\n\\nFinally move the new implementation for the TPM 2 handling into a new\\nfunction to avoid multiple checks for the TPM_CHIP_FLAG_TPM2 flag in the\\ngood case and error cases.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: tpm: arreglo del recuento de referencias para struct tpm_chip La siguiente secuencia de operaciones genera una advertencia de recuento de referencias: 1. Abra el dispositivo /dev/tpmrm. 2. Elimine el m\u00f3dulo tpm_tis_spi. 3. Escriba un comando TPM en el descriptor de archivo abierto en el paso 1. ------------[ cortar aqu\u00ed ]------------ ADVERTENCIA: CPU: 3 PID: 1161 en lib/refcount.c:25 kobject_get+0xa0/0xa4 refcount_t: adici\u00f3n en 0; use-after-free. M\u00f3dulos vinculados en: tpm_tis_spi tpm_tis_core tpm mdio_bcm_unimac brcmfmac sha256_generic libsha256 sha256_arm hci_uart btbcm bluetooth cfg80211 vc4 brcmutil ecdh_generic ecc snd_soc_core crc32_arm_ce libaes raspberrypi_hwmon ac97_bus snd_pcm_dmaengine bcm2711_thermal snd_pcm snd_timer genet snd phy_generic soundcore [\u00faltima descarga: spi_bcm2835] CPU: 3 PID: 1161 Comm: hold_open No contaminado 5.10.0ls-main-dirty #2 Nombre del hardware: BCM2711 [] (unwind_backtrace) from [] (show_stack+0x10/0x14) [] (show_stack) desde [] (dump_stack+0xc4/0xd8) [] (dump_stack) from [] (__warn+0x104/0x108) [] (__warn) from [] (warn_slowpath_fmt+0x74/0xb8) [] (warn_slowpath_fmt) from [] (kobject_get+0xa0/0xa4) [] (kobject_get) desde [] (tpm_try_get_ops+0x14/0x54 [tpm]) [] (tpm_try_get_ops [tpm]) desde[] (tpm_common_write+0x38/0x60 [tpm]) [] (tpm_common_write [tpm]) desde[] (vfs_write+0xc4/0x3c0) [] (vfs_write) desde[] (ksys_write+0x58/0xcc) [] (ksys_write) desde[] (ret_fast_syscall+0x0/0x4c) Pila de excepciones (0xc226bfa8 a 0xc226bff0) bfa0: 00000000 000105b4 00000003 beafe664 00000014 00000000 bfc0: 00000000 000105b4 000103f8 00000004 00000000 00000000 b6f9c000 beafe684 bfe0: 0000006c beafe648 0001056c b6eb6944 ---[ fin del seguimiento d4b8409def9b8b1f ]--- El motivo de esta advertencia es el intento de obtener el chip-\u0026gt;dev referencia en tpm_common_write() aunque el contador de referencia ya es cero. Desde el commit 8979b02aaf1d (\\\"tpm: Fix reference count to main device\\\") la referencia adicional utilizada para evitar un contador cero prematuro nunca se toma, porque el indicador TPM_CHIP_FLAG_TPM2 requerido nunca se establece. Corrija esto moviendo la gesti\u00f3n del dispositivo de caracteres TPM 2 de tpm_chip_alloc() a tpm_add_char_device() que se llama en un punto posterior en el tiempo cuando el indicador se ha establecido en el caso de TPM2. el commit fdc915f7f719 (\\\"tpm: exponer espacios a trav\u00e9s de un enlace de dispositivo /dev/tpmrm\\\") ya introdujo la funci\u00f3n tpm_devs_release() para liberar la referencia adicional pero no implement\u00f3 la funci\u00f3n put en chip-\u0026gt;devs requerida que da como resultado la llamada de esta funci\u00f3n. Corrija esto colocando chip-\u0026gt;devs en tpm_chip_unregister(). Finalmente, mueva la nueva implementaci\u00f3n para la gesti\u00f3n de TPM 2 a una nueva funci\u00f3n para evitar m\u00faltiples verificaciones del indicador TPM_CHIP_FLAG_TPM2 en los casos buenos y de error.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/char/tpm/tpm-chip.c\",\"drivers/char/tpm/tpm.h\",\"drivers/char/tpm/tpm2-space.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"fdc915f7f71939ad5a3dda3389b8d2d7a7c5ee66\",\"lessThan\":\"473a66f99cb8173c14138c5a5c69bfad04e8f9ac\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fdc915f7f71939ad5a3dda3389b8d2d7a7c5ee66\",\"lessThan\":\"cb64bd038beacb4331fe464a36c8b5481e8f51e2\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fdc915f7f71939ad5a3dda3389b8d2d7a7c5ee66\",\"lessThan\":\"a27ed2f3695baf15f9b34d2d7a1f9fc105539a81\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fdc915f7f71939ad5a3dda3389b8d2d7a7c5ee66\",\"lessThan\":\"290e05f346d1829e849662c97e42d5ad984f5258\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fdc915f7f71939ad5a3dda3389b8d2d7a7c5ee66\",\"lessThan\":\"662893b4f6bd466ff9e1cd454c44c26d32d554fe\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fdc915f7f71939ad5a3dda3389b8d2d7a7c5ee66\",\"lessThan\":\"2f928c0d5c02dbab49e8c19d98725c822f6fc409\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fdc915f7f71939ad5a3dda3389b8d2d7a7c5ee66\",\"lessThan\":\"6e7baf84149fb43950631415de231b3a41915aa3\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"fdc915f7f71939ad5a3dda3389b8d2d7a7c5ee66\",\"lessThan\":\"7e0438f83dc769465ee663bb5dcf8cc154940712\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/char/tpm/tpm-chip.c\",\"drivers/char/tpm/tpm.h\",\"drivers/char/tpm/tpm2-space.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.12\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.12\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.14.276\",\"lessThanOrEqual\":\"4.14.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.19.238\",\"lessThanOrEqual\":\"4.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.189\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.110\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.33\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.16.19\",\"lessThanOrEqual\":\"5.16.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.17.1\",\"lessThanOrEqual\":\"5.17.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.18\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.0,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.0,\"impactScore\":5.9},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2025-02-27T18:16:50.967565Z\",\"id\":\"CVE-2022-49287\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"total\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.12\",\"versionEndExcluding\":\"4.14.276\",\"matchCriteriaId\":\"76EDAF8B-A61C-4220-A866-7A0A933212D4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.15\",\"versionEndExcluding\":\"4.19.238\",\"matchCriteriaId\":\"FA28527A-11D3-41D2-9C4C-ECAC0D6A4A2D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.189\",\"matchCriteriaId\":\"8CB6E8F5-C2B1-46F3-A807-0F6104AC340F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.110\",\"matchCriteriaId\":\"91D3BFD0-D3F3-4018-957C-96CCBF357D79\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.33\",\"matchCriteriaId\":\"27C42AE8-B387-43E2-938A-E1C8B40BE6D5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"5.16.19\",\"matchCriteriaId\":\"20C43679-0439-405A-B97F-685BEE50613B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.17\",\"versionEndExcluding\":\"5.17.1\",\"matchCriteriaId\":\"3004D9BF-0093-4C9C-8560-F3E91AFAE409\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/290e05f346d1829e849662c97e42d5ad984f5258\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/2f928c0d5c02dbab49e8c19d98725c822f6fc409\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/473a66f99cb8173c14138c5a5c69bfad04e8f9ac\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/662893b4f6bd466ff9e1cd454c44c26d32d554fe\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6e7baf84149fb43950631415de231b3a41915aa3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/7e0438f83dc769465ee663bb5dcf8cc154940712\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a27ed2f3695baf15f9b34d2d7a1f9fc105539a81\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/cb64bd038beacb4331fe464a36c8b5481e8f51e2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-04T22:59:39+00:00",
      "cve": "CVE-2022-49287",
      "id": "CVE-2022-49287",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_affected": "198",
      "product_status:known_not_affected": "76",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: tpm: fix reference counting for struct tpm_chip",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49287.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-03T16:59:24Z",
      "cve": "CVE-2022-49287",
      "id": "CVE-2022-49287",
      "initial_release_date": "2025-02-27T03:09:24Z",
      "product_status:known_not_affected": "315",
      "product_status:recommended": "300",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-49287",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-49287.json",
      "version": "45"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-49287\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-02-27T18:16:50.967565Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-02-27T18:16:52.692Z\"}}], \"cna\": {\"title\": \"tpm: fix reference counting for struct tpm_chip\", \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 7, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"AV:L - The vulnerable path is a local character-device write on /dev/tpmrmN (tpmrm_open \\u2192 tpm_common_write \\u2192 tpm_try_get_ops \\u2192 get_device), not reachable via network protocols or remote packet processing.\\nAC:H - Triggering the UAF requires tpm_chip_unregister (e.g. rmmod/unbind of tpm_tis_spi) while the attacker still holds the FD; that teardown needs CAP_SYS_MODULE/admin and is outside the control of a tss-group opener, so success depends on a concurrent system state the attacker cannot initiate.\\nPR:L - Opening/writing /dev/tpmrmN only requires access typically granted as 0660 tss:tss (udev), not real root/CAP_SYS_ADMIN; that is low privilege relative to init-namespace admin capabilities.\\nUI:N - The attacker opens and writes their own FD; no separate victim action is required once the chip has been unregistered beneath that FD.\\nS:U - Impact is use-after-free and potential privilege escalation inside the same host kernel authority; this is not a VM escape, IOMMU bypass, or other cross-boundary break.\\nC:H - The bug is an explicit use-after-free of struct tpm_chip (refcount addition on 0), which enables reclaim/spray of the freed object and arbitrary kernel read primitives.\\nI:H - The same tpm_chip UAF yields a corruptible kernel object for arbitrary write and control-flow hijacking via standard heap exploitation techniques.\\nA:H - The UAF already produces a kernel warning/oops path on get_device after free and can crash the kernel even without a full exploit.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"fdc915f7f71939ad5a3dda3389b8d2d7a7c5ee66\", \"lessThan\": \"473a66f99cb8173c14138c5a5c69bfad04e8f9ac\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"fdc915f7f71939ad5a3dda3389b8d2d7a7c5ee66\", \"lessThan\": \"cb64bd038beacb4331fe464a36c8b5481e8f51e2\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"fdc915f7f71939ad5a3dda3389b8d2d7a7c5ee66\", \"lessThan\": \"a27ed2f3695baf15f9b34d2d7a1f9fc105539a81\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"fdc915f7f71939ad5a3dda3389b8d2d7a7c5ee66\", \"lessThan\": \"290e05f346d1829e849662c97e42d5ad984f5258\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"fdc915f7f71939ad5a3dda3389b8d2d7a7c5ee66\", \"lessThan\": \"662893b4f6bd466ff9e1cd454c44c26d32d554fe\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"fdc915f7f71939ad5a3dda3389b8d2d7a7c5ee66\", \"lessThan\": \"2f928c0d5c02dbab49e8c19d98725c822f6fc409\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"fdc915f7f71939ad5a3dda3389b8d2d7a7c5ee66\", \"lessThan\": \"6e7baf84149fb43950631415de231b3a41915aa3\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"fdc915f7f71939ad5a3dda3389b8d2d7a7c5ee66\", \"lessThan\": \"7e0438f83dc769465ee663bb5dcf8cc154940712\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/char/tpm/tpm-chip.c\", \"drivers/char/tpm/tpm.h\", \"drivers/char/tpm/tpm2-space.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.12\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.12\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.14.276\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.14.*\"}, {\"status\": \"unaffected\", \"version\": \"4.19.238\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.189\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.110\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.33\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.16.19\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.16.*\"}, {\"status\": \"unaffected\", \"version\": \"5.17.1\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.17.*\"}, {\"status\": \"unaffected\", \"version\": \"5.18\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/char/tpm/tpm-chip.c\", \"drivers/char/tpm/tpm.h\", \"drivers/char/tpm/tpm2-space.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/473a66f99cb8173c14138c5a5c69bfad04e8f9ac\"}, {\"url\": \"https://git.kernel.org/stable/c/cb64bd038beacb4331fe464a36c8b5481e8f51e2\"}, {\"url\": \"https://git.kernel.org/stable/c/a27ed2f3695baf15f9b34d2d7a1f9fc105539a81\"}, {\"url\": \"https://git.kernel.org/stable/c/290e05f346d1829e849662c97e42d5ad984f5258\"}, {\"url\": \"https://git.kernel.org/stable/c/662893b4f6bd466ff9e1cd454c44c26d32d554fe\"}, {\"url\": \"https://git.kernel.org/stable/c/2f928c0d5c02dbab49e8c19d98725c822f6fc409\"}, {\"url\": \"https://git.kernel.org/stable/c/6e7baf84149fb43950631415de231b3a41915aa3\"}, {\"url\": \"https://git.kernel.org/stable/c/7e0438f83dc769465ee663bb5dcf8cc154940712\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ntpm: fix reference counting for struct tpm_chip\\n\\nThe following sequence of operations results in a refcount warning:\\n\\n1. Open device /dev/tpmrm.\\n2. Remove module tpm_tis_spi.\\n3. Write a TPM command to the file descriptor opened at step 1.\\n\\n------------[ cut here ]------------\\nWARNING: CPU: 3 PID: 1161 at lib/refcount.c:25 kobject_get+0xa0/0xa4\\nrefcount_t: addition on 0; use-after-free.\\nModules linked in: tpm_tis_spi tpm_tis_core tpm mdio_bcm_unimac brcmfmac\\nsha256_generic libsha256 sha256_arm hci_uart btbcm bluetooth cfg80211 vc4\\nbrcmutil ecdh_generic ecc snd_soc_core crc32_arm_ce libaes\\nraspberrypi_hwmon ac97_bus snd_pcm_dmaengine bcm2711_thermal snd_pcm\\nsnd_timer genet snd phy_generic soundcore [last unloaded: spi_bcm2835]\\nCPU: 3 PID: 1161 Comm: hold_open Not tainted 5.10.0ls-main-dirty #2\\nHardware name: BCM2711\\n[\u003cc0410c3c\u003e] (unwind_backtrace) from [\u003cc040b580\u003e] (show_stack+0x10/0x14)\\n[\u003cc040b580\u003e] (show_stack) from [\u003cc1092174\u003e] (dump_stack+0xc4/0xd8)\\n[\u003cc1092174\u003e] (dump_stack) from [\u003cc0445a30\u003e] (__warn+0x104/0x108)\\n[\u003cc0445a30\u003e] (__warn) from [\u003cc0445aa8\u003e] (warn_slowpath_fmt+0x74/0xb8)\\n[\u003cc0445aa8\u003e] (warn_slowpath_fmt) from [\u003cc08435d0\u003e] (kobject_get+0xa0/0xa4)\\n[\u003cc08435d0\u003e] (kobject_get) from [\u003cbf0a715c\u003e] (tpm_try_get_ops+0x14/0x54 [tpm])\\n[\u003cbf0a715c\u003e] (tpm_try_get_ops [tpm]) from [\u003cbf0a7d6c\u003e] (tpm_common_write+0x38/0x60 [tpm])\\n[\u003cbf0a7d6c\u003e] (tpm_common_write [tpm]) from [\u003cc05a7ac0\u003e] (vfs_write+0xc4/0x3c0)\\n[\u003cc05a7ac0\u003e] (vfs_write) from [\u003cc05a7ee4\u003e] (ksys_write+0x58/0xcc)\\n[\u003cc05a7ee4\u003e] (ksys_write) from [\u003cc04001a0\u003e] (ret_fast_syscall+0x0/0x4c)\\nException stack(0xc226bfa8 to 0xc226bff0)\\nbfa0:                   00000000 000105b4 00000003 beafe664 00000014 00000000\\nbfc0: 00000000 000105b4 000103f8 00000004 00000000 00000000 b6f9c000 beafe684\\nbfe0: 0000006c beafe648 0001056c b6eb6944\\n---[ end trace d4b8409def9b8b1f ]---\\n\\nThe reason for this warning is the attempt to get the chip-\u003edev reference\\nin tpm_common_write() although the reference counter is already zero.\\n\\nSince commit 8979b02aaf1d (\\\"tpm: Fix reference count to main device\\\") the\\nextra reference used to prevent a premature zero counter is never taken,\\nbecause the required TPM_CHIP_FLAG_TPM2 flag is never set.\\n\\nFix this by moving the TPM 2 character device handling from\\ntpm_chip_alloc() to tpm_add_char_device() which is called at a later point\\nin time when the flag has been set in case of TPM2.\\n\\nCommit fdc915f7f719 (\\\"tpm: expose spaces via a device link /dev/tpmrm\u003cn\u003e\\\")\\nalready introduced function tpm_devs_release() to release the extra\\nreference but did not implement the required put on chip-\u003edevs that results\\nin the call of this function.\\n\\nFix this by putting chip-\u003edevs in tpm_chip_unregister().\\n\\nFinally move the new implementation for the TPM 2 handling into a new\\nfunction to avoid multiple checks for the TPM_CHIP_FLAG_TPM2 flag in the\\ngood case and error cases.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.14.276\", \"versionStartIncluding\": \"4.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.238\", \"versionStartIncluding\": \"4.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.189\", \"versionStartIncluding\": \"4.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.110\", \"versionStartIncluding\": \"4.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.33\", \"versionStartIncluding\": \"4.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.16.19\", \"versionStartIncluding\": \"4.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.17.1\", \"versionStartIncluding\": \"4.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.18\", \"versionStartIncluding\": \"4.12\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T08:54:36.034Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-49287\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T08:54:36.034Z\", \"dateReserved\": \"2025-02-26T01:49:39.302Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-02-26T01:56:26.059Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.