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CVE-2022-49248 (GCVE-0-2022-49248)

Vulnerability from cvelistv5 – Published: 2025-02-26 01:56 – Updated: 2026-05-11 18:56
VLAI
Title
ALSA: firewire-lib: fix uninitialized flag for AV/C deferred transaction
Summary
In the Linux kernel, the following vulnerability has been resolved: ALSA: firewire-lib: fix uninitialized flag for AV/C deferred transaction AV/C deferred transaction was supported at a commit 00a7bb81c20f ("ALSA: firewire-lib: Add support for deferred transaction") while 'deferrable' flag can be uninitialized for non-control/notify AV/C transactions. UBSAN reports it: kernel: ================================================================================ kernel: UBSAN: invalid-load in /build/linux-aa0B4d/linux-5.15.0/sound/firewire/fcp.c:363:9 kernel: load of value 158 is not a valid value for type '_Bool' kernel: CPU: 3 PID: 182227 Comm: irq/35-firewire Tainted: P OE 5.15.0-18-generic #18-Ubuntu kernel: Hardware name: Gigabyte Technology Co., Ltd. AX370-Gaming 5/AX370-Gaming 5, BIOS F42b 08/01/2019 kernel: Call Trace: kernel: <IRQ> kernel: show_stack+0x52/0x58 kernel: dump_stack_lvl+0x4a/0x5f kernel: dump_stack+0x10/0x12 kernel: ubsan_epilogue+0x9/0x45 kernel: __ubsan_handle_load_invalid_value.cold+0x44/0x49 kernel: fcp_response.part.0.cold+0x1a/0x2b [snd_firewire_lib] kernel: fcp_response+0x28/0x30 [snd_firewire_lib] kernel: fw_core_handle_request+0x230/0x3d0 [firewire_core] kernel: handle_ar_packet+0x1d9/0x200 [firewire_ohci] kernel: ? handle_ar_packet+0x1d9/0x200 [firewire_ohci] kernel: ? transmit_complete_callback+0x9f/0x120 [firewire_core] kernel: ar_context_tasklet+0xa8/0x2e0 [firewire_ohci] kernel: tasklet_action_common.constprop.0+0xea/0xf0 kernel: tasklet_action+0x22/0x30 kernel: __do_softirq+0xd9/0x2e3 kernel: ? irq_finalize_oneshot.part.0+0xf0/0xf0 kernel: do_softirq+0x75/0xa0 kernel: </IRQ> kernel: <TASK> kernel: __local_bh_enable_ip+0x50/0x60 kernel: irq_forced_thread_fn+0x7e/0x90 kernel: irq_thread+0xba/0x190 kernel: ? irq_thread_fn+0x60/0x60 kernel: kthread+0x11e/0x140 kernel: ? irq_thread_check_affinity+0xf0/0xf0 kernel: ? set_kthread_struct+0x50/0x50 kernel: ret_from_fork+0x22/0x30 kernel: </TASK> kernel: ================================================================================ This commit fixes the bug. The bug has no disadvantage for the non- control/notify AV/C transactions since the flag has an effect for AV/C response with INTERIM (0x0f) status which is not used for the transactions in AV/C general specification.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 00a7bb81c20f3e81711e28e0f6c08cee8fd18514 , < 99582e4b19f367fa95bdd150b3034d7ce8113342 (git)
Affected: 00a7bb81c20f3e81711e28e0f6c08cee8fd18514 , < b2b65c9013dc28836d82e25d0f0c94d794a14aba (git)
Affected: 00a7bb81c20f3e81711e28e0f6c08cee8fd18514 , < 60e5d391805d70458a01998de00d0c28cba40bf3 (git)
Affected: 00a7bb81c20f3e81711e28e0f6c08cee8fd18514 , < 7025f40690a235a118c87674cfb93072694aa66d (git)
Affected: 00a7bb81c20f3e81711e28e0f6c08cee8fd18514 , < 7e6f5786621df060f8296f074efd275eaf20361a (git)
Affected: 00a7bb81c20f3e81711e28e0f6c08cee8fd18514 , < eab74c41612083bd627b60da650e19234e4f1051 (git)
Affected: 00a7bb81c20f3e81711e28e0f6c08cee8fd18514 , < d07e4bbaff6fbba6f70c04b092ea7d9afcdf392e (git)
Affected: 00a7bb81c20f3e81711e28e0f6c08cee8fd18514 , < 39d2c4a33dc1b4402cec68a3c8f82c6588b6edce (git)
Affected: 00a7bb81c20f3e81711e28e0f6c08cee8fd18514 , < bf0cd60b7e33cf221fbe1114e4acb2c828b0af0d (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.16
Unaffected: 0 , < 3.16 (semver)
Unaffected: 4.9.311 , ≤ 4.9.* (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: 5.17.2 , ≤ 5.17.* (semver)
Unaffected: 5.18 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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                    "matchCriteriaId": "FA28527A-11D3-41D2-9C4C-ECAC0D6A4A2D",
                    "versionEndExcluding": "4.19.238",
                    "versionStartIncluding": "4.15",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "8CB6E8F5-C2B1-46F3-A807-0F6104AC340F",
                    "versionEndExcluding": "5.4.189",
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                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "91D3BFD0-D3F3-4018-957C-96CCBF357D79",
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                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "27C42AE8-B387-43E2-938A-E1C8B40BE6D5",
                    "versionEndExcluding": "5.15.33",
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                    "vulnerable": true
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                  {
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                    "matchCriteriaId": "20C43679-0439-405A-B97F-685BEE50613B",
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                  {
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                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: firewire-lib: fix uninitialized flag for AV/C deferred transaction\n\nAV/C deferred transaction was supported at a commit 00a7bb81c20f (\"ALSA:\nfirewire-lib: Add support for deferred transaction\") while \u0027deferrable\u0027\nflag can be uninitialized for non-control/notify AV/C transactions.\nUBSAN reports it:\n\nkernel: ================================================================================\nkernel: UBSAN: invalid-load in /build/linux-aa0B4d/linux-5.15.0/sound/firewire/fcp.c:363:9\nkernel: load of value 158 is not a valid value for type \u0027_Bool\u0027\nkernel: CPU: 3 PID: 182227 Comm: irq/35-firewire Tainted: P           OE     5.15.0-18-generic #18-Ubuntu\nkernel: Hardware name: Gigabyte Technology Co., Ltd. AX370-Gaming 5/AX370-Gaming 5, BIOS F42b 08/01/2019\nkernel: Call Trace:\nkernel:  \u003cIRQ\u003e\nkernel:  show_stack+0x52/0x58\nkernel:  dump_stack_lvl+0x4a/0x5f\nkernel:  dump_stack+0x10/0x12\nkernel:  ubsan_epilogue+0x9/0x45\nkernel:  __ubsan_handle_load_invalid_value.cold+0x44/0x49\nkernel:  fcp_response.part.0.cold+0x1a/0x2b [snd_firewire_lib]\nkernel:  fcp_response+0x28/0x30 [snd_firewire_lib]\nkernel:  fw_core_handle_request+0x230/0x3d0 [firewire_core]\nkernel:  handle_ar_packet+0x1d9/0x200 [firewire_ohci]\nkernel:  ? handle_ar_packet+0x1d9/0x200 [firewire_ohci]\nkernel:  ? transmit_complete_callback+0x9f/0x120 [firewire_core]\nkernel:  ar_context_tasklet+0xa8/0x2e0 [firewire_ohci]\nkernel:  tasklet_action_common.constprop.0+0xea/0xf0\nkernel:  tasklet_action+0x22/0x30\nkernel:  __do_softirq+0xd9/0x2e3\nkernel:  ? irq_finalize_oneshot.part.0+0xf0/0xf0\nkernel:  do_softirq+0x75/0xa0\nkernel:  \u003c/IRQ\u003e\nkernel:  \u003cTASK\u003e\nkernel:  __local_bh_enable_ip+0x50/0x60\nkernel:  irq_forced_thread_fn+0x7e/0x90\nkernel:  irq_thread+0xba/0x190\nkernel:  ? irq_thread_fn+0x60/0x60\nkernel:  kthread+0x11e/0x140\nkernel:  ? irq_thread_check_affinity+0xf0/0xf0\nkernel:  ? set_kthread_struct+0x50/0x50\nkernel:  ret_from_fork+0x22/0x30\nkernel:  \u003c/TASK\u003e\nkernel: ================================================================================\n\nThis commit fixes the bug. The bug has no disadvantage for the non-\ncontrol/notify AV/C transactions since the flag has an effect for AV/C\nresponse with INTERIM (0x0f) status which is not used for the transactions\nin AV/C general specification."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ALSA: firewire-lib: corrige el indicador no inicializado para las transacciones diferidas de AV/C. Las transacciones diferidas de AV/C ten\u00edan soporte en una confirmaci\u00f3n 00a7bb81c20f (\"ALSA: firewire-lib: agregar soporte para transacciones diferidas\"), mientras que el indicador \u0027diferible\u0027 se puede desinicializar para transacciones AV/C que no sean de control/notificaci\u00f3n. UBSAN lo informa: kernel: == ... 5/AX370-Gaming 5, BIOS F42b 01/08/2019 n\u00facleo: Seguimiento de llamadas: n\u00facleo:  kernel: show_stack+0x52/0x58 kernel: dump_stack_lvl+0x4a/0x5f kernel: dump_stack+0x10/0x12 kernel: ubsan_epilogue+0x9/0x45 kernel: __ubsan_handle_load_invalid_value.cold+0x44/0x49 kernel: fcp_response.part.0.cold+0x1a/0x2b [snd_firewire_lib] kernel: fcp_response+0x28/0x30 [snd_firewire_lib] kernel: fw_core_handle_request+0x230/0x3d0 [firewire_core] kernel: handle_ar_packet+0x1d9/0x200 [firewire_ohci] kernel: ? handle_ar_packet+0x1d9/0x200 [firewire_ohci] kernel: ? transmit_complete_callback+0x9f/0x120 [firewire_core] kernel: ar_context_tasklet+0xa8/0x2e0 [firewire_ohci] kernel: tasklet_action_common.constprop.0+0xea/0xf0 kernel: tasklet_action+0x22/0x30 kernel: __do_softirq+0xd9/0x2e3 kernel: ? irq_finalize_oneshot.part.0+0xf0/0xf0 kernel: do_softirq+0x75/0xa0 kernel:  kernel:  kernel: __local_bh_enable_ip+0x50/0x60 kernel: irq_forced_thread_fn+0x7e/0x90 kernel: irq_thread+0xba/0x190 kernel: ? irq_thread_fn+0x60/0x60 kernel: kthread+0x11e/0x140 kernel: ? irq_thread_check_affinity+0xf0/0xf0 kernel: ? set_kthread_struct+0x50/0x50 kernel: ret_from_fork+0x22/0x30 kernel:  kernel: ================================================================================\nEsta confirmaci\u00f3n corrige el error. El error no tiene ninguna desventaja para las transacciones AV/C que no son de control/notificaci\u00f3n, ya que el indicador tiene un efecto para la respuesta AV/C con estado INTERIM (0x0f), que no se utiliza para las transacciones en la especificaci\u00f3n general AV/C."
          }
        ],
        "id": "CVE-2022-49248",
        "lastModified": "2026-06-17T05:17:30.440",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2025-02-26T07:01:01.727",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/39d2c4a33dc1b4402cec68a3c8f82c6588b6edce"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
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          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/7025f40690a235a118c87674cfb93072694aa66d"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/7e6f5786621df060f8296f074efd275eaf20361a"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/99582e4b19f367fa95bdd150b3034d7ce8113342"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/b2b65c9013dc28836d82e25d0f0c94d794a14aba"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/bf0cd60b7e33cf221fbe1114e4acb2c828b0af0d"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/d07e4bbaff6fbba6f70c04b092ea7d9afcdf392e"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/eab74c41612083bd627b60da650e19234e4f1051"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-908"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-29T21:02:16+00:00",
      "cve": "CVE-2022-49248",
      "id": "CVE-2022-49248",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_affected": "76",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ALSA: firewire-lib: fix uninitialized flag for AV/C deferred transaction",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49248.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-03T00:39:33Z",
      "cve": "CVE-2022-49248",
      "id": "CVE-2022-49248",
      "initial_release_date": "2025-02-27T03:10:01Z",
      "product_status:known_affected": "494",
      "product_status:known_not_affected": "186",
      "product_status:recommended": "330",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-49248",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-49248.json",
      "version": "56"
    }
  }
}



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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

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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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.