CVE-2026-46264 (GCVE-0-2026-46264)

Vulnerability from cvelistv5 – Published: 2026-06-03 15:50 – Updated: 2026-06-03 15:50
VLAI
Title
drm/xe/pf: Fix sysfs initialization
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/xe/pf: Fix sysfs initialization In case of devm_add_action_or_reset() failure the provided cleanup action will be run immediately on the not yet initialized kobject. This may lead to errors like: [ ] kobject: '(null)' (ff110001393608e0): is not initialized, yet kobject_put() is being called. [ ] WARNING: lib/kobject.c:734 at kobject_put+0xd9/0x250, CPU#0: kworker/0:0/9 [ ] RIP: 0010:kobject_put+0xdf/0x250 [ ] Call Trace: [ ] xe_sriov_pf_sysfs_init+0x21/0x100 [xe] [ ] xe_sriov_pf_init_late+0x87/0x2b0 [xe] [ ] xe_sriov_init_late+0x5f/0x2c0 [xe] [ ] xe_device_probe+0x5f2/0xc20 [xe] [ ] xe_pci_probe+0x396/0x610 [xe] [ ] local_pci_probe+0x47/0xb0 [ ] refcount_t: underflow; use-after-free. [ ] WARNING: lib/refcount.c:28 at refcount_warn_saturate+0x68/0xb0, CPU#0: kworker/0:0/9 [ ] RIP: 0010:refcount_warn_saturate+0x68/0xb0 [ ] Call Trace: [ ] kobject_put+0x174/0x250 [ ] xe_sriov_pf_sysfs_init+0x21/0x100 [xe] [ ] xe_sriov_pf_init_late+0x87/0x2b0 [xe] [ ] xe_sriov_init_late+0x5f/0x2c0 [xe] [ ] xe_device_probe+0x5f2/0xc20 [xe] [ ] xe_pci_probe+0x396/0x610 [xe] [ ] local_pci_probe+0x47/0xb0 Fix that by calling kobject_init() and kobject_add() separately and register cleanup action after the kobject is initialized. Also make this cleanup registration a part of the create helper to fix another mistake, as in the loop we were wrongly passing parent kobject while registering cleanup action, and this resulted in some undetected leaks. (cherry picked from commit 98b16727f07e26a5d4de84d88805ce7ffcfdd324)
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 5c170a4d9c530e872f2f788d95258fbaa39b4415 , < 6ae479b1919ee9bd0560fc7af649932dd420d010 (git)
Affected: 5c170a4d9c530e872f2f788d95258fbaa39b4415 , < bf7172cd25ed182f30af2cbb9f80c730dc717d8e (git)
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Linux Linux Affected: 6.19
Unaffected: 0 , < 6.19 (semver)
Unaffected: 6.19.4 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/xe/xe_sriov_pf_sysfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "5c170a4d9c530e872f2f788d95258fbaa39b4415",
              "versionType": "git"
            },
            {
              "lessThan": "bf7172cd25ed182f30af2cbb9f80c730dc717d8e",
              "status": "affected",
              "version": "5c170a4d9c530e872f2f788d95258fbaa39b4415",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/xe/xe_sriov_pf_sysfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "6.19"
            },
            {
              "lessThan": "6.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.4",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/pf: Fix sysfs initialization\n\nIn case of devm_add_action_or_reset() failure the provided cleanup\naction will be run immediately on the not yet initialized kobject.\nThis may lead to errors like:\n\n [ ] kobject: \u0027(null)\u0027 (ff110001393608e0): is not initialized, yet kobject_put() is being called.\n [ ] WARNING: lib/kobject.c:734 at kobject_put+0xd9/0x250, CPU#0: kworker/0:0/9\n [ ] RIP: 0010:kobject_put+0xdf/0x250\n [ ] Call Trace:\n [ ]  xe_sriov_pf_sysfs_init+0x21/0x100 [xe]\n [ ]  xe_sriov_pf_init_late+0x87/0x2b0 [xe]\n [ ]  xe_sriov_init_late+0x5f/0x2c0 [xe]\n [ ]  xe_device_probe+0x5f2/0xc20 [xe]\n [ ]  xe_pci_probe+0x396/0x610 [xe]\n [ ]  local_pci_probe+0x47/0xb0\n\n [ ] refcount_t: underflow; use-after-free.\n [ ] WARNING: lib/refcount.c:28 at refcount_warn_saturate+0x68/0xb0, CPU#0: kworker/0:0/9\n [ ] RIP: 0010:refcount_warn_saturate+0x68/0xb0\n [ ] Call Trace:\n [ ]  kobject_put+0x174/0x250\n [ ]  xe_sriov_pf_sysfs_init+0x21/0x100 [xe]\n [ ]  xe_sriov_pf_init_late+0x87/0x2b0 [xe]\n [ ]  xe_sriov_init_late+0x5f/0x2c0 [xe]\n [ ]  xe_device_probe+0x5f2/0xc20 [xe]\n [ ]  xe_pci_probe+0x396/0x610 [xe]\n [ ]  local_pci_probe+0x47/0xb0\n\nFix that by calling kobject_init() and kobject_add() separately\nand register cleanup action after the kobject is initialized.\n\nAlso make this cleanup registration a part of the create helper to\nfix another mistake, as in the loop we were wrongly passing parent\nkobject while registering cleanup action, and this resulted in some\nundetected leaks.\n\n(cherry picked from commit 98b16727f07e26a5d4de84d88805ce7ffcfdd324)"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-03T15:50:04.620Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/6ae479b1919ee9bd0560fc7af649932dd420d010"
        },
        {
          "url": "https://git.kernel.org/stable/c/bf7172cd25ed182f30af2cbb9f80c730dc717d8e"
        }
      ],
      "title": "drm/xe/pf: Fix sysfs initialization",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46264",
    "datePublished": "2026-06-03T15:50:04.620Z",
    "dateReserved": "2026-05-13T15:03:33.108Z",
    "dateUpdated": "2026-06-03T15:50:04.620Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-46264\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-06-03T18:16:27.893\",\"lastModified\":\"2026-06-03T18:16:27.893\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndrm/xe/pf: Fix sysfs initialization\\n\\nIn case of devm_add_action_or_reset() failure the provided cleanup\\naction will be run immediately on the not yet initialized kobject.\\nThis may lead to errors like:\\n\\n [ ] kobject: \u0027(null)\u0027 (ff110001393608e0): is not initialized, yet kobject_put() is being called.\\n [ ] WARNING: lib/kobject.c:734 at kobject_put+0xd9/0x250, CPU#0: kworker/0:0/9\\n [ ] RIP: 0010:kobject_put+0xdf/0x250\\n [ ] Call Trace:\\n [ ]  xe_sriov_pf_sysfs_init+0x21/0x100 [xe]\\n [ ]  xe_sriov_pf_init_late+0x87/0x2b0 [xe]\\n [ ]  xe_sriov_init_late+0x5f/0x2c0 [xe]\\n [ ]  xe_device_probe+0x5f2/0xc20 [xe]\\n [ ]  xe_pci_probe+0x396/0x610 [xe]\\n [ ]  local_pci_probe+0x47/0xb0\\n\\n [ ] refcount_t: underflow; use-after-free.\\n [ ] WARNING: lib/refcount.c:28 at refcount_warn_saturate+0x68/0xb0, CPU#0: kworker/0:0/9\\n [ ] RIP: 0010:refcount_warn_saturate+0x68/0xb0\\n [ ] Call Trace:\\n [ ]  kobject_put+0x174/0x250\\n [ ]  xe_sriov_pf_sysfs_init+0x21/0x100 [xe]\\n [ ]  xe_sriov_pf_init_late+0x87/0x2b0 [xe]\\n [ ]  xe_sriov_init_late+0x5f/0x2c0 [xe]\\n [ ]  xe_device_probe+0x5f2/0xc20 [xe]\\n [ ]  xe_pci_probe+0x396/0x610 [xe]\\n [ ]  local_pci_probe+0x47/0xb0\\n\\nFix that by calling kobject_init() and kobject_add() separately\\nand register cleanup action after the kobject is initialized.\\n\\nAlso make this cleanup registration a part of the create helper to\\nfix another mistake, as in the loop we were wrongly passing parent\\nkobject while registering cleanup action, and this resulted in some\\nundetected leaks.\\n\\n(cherry picked from commit 98b16727f07e26a5d4de84d88805ce7ffcfdd324)\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/6ae479b1919ee9bd0560fc7af649932dd420d010\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/bf7172cd25ed182f30af2cbb9f80c730dc717d8e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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