{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-74331", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-15T05:44:03.885Z", "datePublished": "2026-08-15T05:58:24.420Z", "dateUpdated": "2026-08-17T05:17:22.413Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:17:22.413Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware_loader: Fix recursive lock in device_cache_fw_images()\n\nA recursive locking deadlock can occur in the firmware loader's power\nmanagement notification handler.\n\nDuring system suspend or hibernation preparation, fw_pm_notify() calls\ndevice_cache_fw_images(). This function acquires fw_lock to set the\nfirmware cache state to FW_LOADER_START_CACHE and then iterates over all\ndevices using dpm_for_each_dev() while still holding the lock.\n\nFor each device, dev_cache_fw_image() schedules asynchronous work to cache\nthe firmware. If memory allocation for the async work entry fails (e.g., in\nout-of-memory conditions), async_schedule_node_domain() falls back to\nexecuting the work function synchronously in the current thread.\n\nThe synchronous execution path (__async_dev_cache_fw_image() ->\ncache_firmware() -> request_firmware() -> assign_fw()) attempts to acquire\nfw_lock again. Since the current thread already holds fw_lock, this results\nin a recursive locking deadlock.\n\nFix this by releasing fw_lock immediately after updating the cache state\nand before calling dpm_for_each_dev(). The lock is only needed to protect\nthe state update. Concurrent firmware requests will correctly see the\nFW_LOADER_START_CACHE state and use the piggyback mechanism, which is\nindependently protected by its own fwc->name_lock."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/base/firmware_loader/main.c"], "versions": [{"version": "ac39b3ea73aacde876d1d5ee1ca3e2719f771482", "lessThan": "806cb8fabfde7f830da5ae87777d52fdf50c4774", "status": "affected", "versionType": "git"}, {"version": "ac39b3ea73aacde876d1d5ee1ca3e2719f771482", "lessThan": "7865a1bfd20d10c03b083a5fc392d907ca5099b3", "status": "affected", "versionType": "git"}, {"version": "ac39b3ea73aacde876d1d5ee1ca3e2719f771482", "lessThan": "490b0385e4cfac691f7b18dde821c13e77b4770b", "status": "affected", "versionType": "git"}, {"version": "ac39b3ea73aacde876d1d5ee1ca3e2719f771482", "lessThan": "38149b57427c736c08d9aa4c7b87deacd53e9e63", "status": "affected", "versionType": "git"}, {"version": "ac39b3ea73aacde876d1d5ee1ca3e2719f771482", "lessThan": "a5b2a68a391b05d54552f13548a72a46c65006f7", "status": "affected", "versionType": "git"}, {"version": "ac39b3ea73aacde876d1d5ee1ca3e2719f771482", "lessThan": "f25d6e4ec4c257030592bd671f113cf9584c52f0", "status": "affected", "versionType": "git"}, {"version": "ac39b3ea73aacde876d1d5ee1ca3e2719f771482", "lessThan": "c0f2dedd41fe14dbe076c1672214802fb42cd8c8", "status": "affected", "versionType": "git"}, {"version": "ac39b3ea73aacde876d1d5ee1ca3e2719f771482", "lessThan": "d3ec78f8f8d48a04a9fac38d47275c34645e5103", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/base/firmware_loader/main.c"], "versions": [{"version": "3.7", "status": "affected"}, {"version": "0", "lessThan": "3.7", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.261", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.212", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "5.10.261"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "5.15.212"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "6.1.178"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "6.6.145"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.7", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/806cb8fabfde7f830da5ae87777d52fdf50c4774"}, {"url": "https://git.kernel.org/stable/c/7865a1bfd20d10c03b083a5fc392d907ca5099b3"}, {"url": "https://git.kernel.org/stable/c/490b0385e4cfac691f7b18dde821c13e77b4770b"}, {"url": "https://git.kernel.org/stable/c/38149b57427c736c08d9aa4c7b87deacd53e9e63"}, {"url": "https://git.kernel.org/stable/c/a5b2a68a391b05d54552f13548a72a46c65006f7"}, {"url": "https://git.kernel.org/stable/c/f25d6e4ec4c257030592bd671f113cf9584c52f0"}, {"url": "https://git.kernel.org/stable/c/c0f2dedd41fe14dbe076c1672214802fb42cd8c8"}, {"url": "https://git.kernel.org/stable/c/d3ec78f8f8d48a04a9fac38d47275c34645e5103"}], "title": "firmware_loader: Fix recursive lock in device_cache_fw_images()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/base/firmware_loader/main.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "806cb8fabfde7f830da5ae87777d52fdf50c4774", "status": "affected", "version": "ac39b3ea73aacde876d1d5ee1ca3e2719f771482", "versionType": "git"}, {"lessThan": "7865a1bfd20d10c03b083a5fc392d907ca5099b3", "status": "affected", "version": "ac39b3ea73aacde876d1d5ee1ca3e2719f771482", "versionType": "git"}, {"lessThan": "490b0385e4cfac691f7b18dde821c13e77b4770b", "status": "affected", "version": "ac39b3ea73aacde876d1d5ee1ca3e2719f771482", "versionType": "git"}, {"lessThan": "38149b57427c736c08d9aa4c7b87deacd53e9e63", "status": "affected", "version": "ac39b3ea73aacde876d1d5ee1ca3e2719f771482", "versionType": "git"}, {"lessThan": "a5b2a68a391b05d54552f13548a72a46c65006f7", "status": "affected", "version": "ac39b3ea73aacde876d1d5ee1ca3e2719f771482", "versionType": "git"}, {"lessThan": "f25d6e4ec4c257030592bd671f113cf9584c52f0", "status": "affected", "version": "ac39b3ea73aacde876d1d5ee1ca3e2719f771482", "versionType": "git"}, {"lessThan": "c0f2dedd41fe14dbe076c1672214802fb42cd8c8", "status": "affected", "version": "ac39b3ea73aacde876d1d5ee1ca3e2719f771482", "versionType": "git"}, {"lessThan": "d3ec78f8f8d48a04a9fac38d47275c34645e5103", "status": "affected", "version": "ac39b3ea73aacde876d1d5ee1ca3e2719f771482", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/base/firmware_loader/main.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "3.7"}, {"lessThan": "3.7", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.261", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.212", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.178", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.145", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.97", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.40", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware_loader: Fix recursive lock in device_cache_fw_images()\n\nA recursive locking deadlock can occur in the firmware loader's power\nmanagement notification handler.\n\nDuring system suspend or hibernation preparation, fw_pm_notify() calls\ndevice_cache_fw_images(). This function acquires fw_lock to set the\nfirmware cache state to FW_LOADER_START_CACHE and then iterates over all\ndevices using dpm_for_each_dev() while still holding the lock.\n\nFor each device, dev_cache_fw_image() schedules asynchronous work to cache\nthe firmware. If memory allocation for the async work entry fails (e.g., in\nout-of-memory conditions), async_schedule_node_domain() falls back to\nexecuting the work function synchronously in the current thread.\n\nThe synchronous execution path (__async_dev_cache_fw_image() ->\ncache_firmware() -> request_firmware() -> assign_fw()) attempts to acquire\nfw_lock again. Since the current thread already holds fw_lock, this results\nin a recursive locking deadlock.\n\nFix this by releasing fw_lock immediately after updating the cache state\nand before calling dpm_for_each_dev(). The lock is only needed to protect\nthe state update. Concurrent firmware requests will correctly see the\nFW_LOADER_START_CACHE state and use the piggyback mechanism, which is\nindependently protected by its own fwc->name_lock."}], "id": "CVE-2026-74331", "lastModified": "2026-08-17T06:19:27.560", "metrics": {}, "published": "2026-08-15T06:22:33.907", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/38149b57427c736c08d9aa4c7b87deacd53e9e63"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/490b0385e4cfac691f7b18dde821c13e77b4770b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7865a1bfd20d10c03b083a5fc392d907ca5099b3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/806cb8fabfde7f830da5ae87777d52fdf50c4774"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a5b2a68a391b05d54552f13548a72a46c65006f7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c0f2dedd41fe14dbe076c1672214802fb42cd8c8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d3ec78f8f8d48a04a9fac38d47275c34645e5103"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f25d6e4ec4c257030592bd671f113cf9584c52f0"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: firmware_loader: Fix recursive lock in device_cache_fw_images()", "id": "2516903", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516903"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-833", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nfirmware_loader: Fix recursive lock in device_cache_fw_images()\nA recursive locking deadlock can occur in the firmware loader's power\nmanagement notification handler.\nDuring system suspend or hibernation preparation, fw_pm_notify() calls\ndevice_cache_fw_images(). This function acquires fw_lock to set the\nfirmware cache state to FW_LOADER_START_CACHE and then iterates over all\ndevices using dpm_for_each_dev() while still holding the lock.\nFor each device, dev_cache_fw_image() schedules asynchronous work to cache\nthe firmware. If memory allocation for the async work entry fails (e.g., in\nout-of-memory conditions), async_schedule_node_domain() falls back to\nexecuting the work function synchronously in the current thread.\nThe synchronous execution path (__async_dev_cache_fw_image() ->\ncache_firmware() -> request_firmware() -> assign_fw()) attempts to acquire\nfw_lock again. Since the current thread already holds fw_lock, this results\nin a recursive locking deadlock.\nFix this by releasing fw_lock immediately after updating the cache state\nand before calling dpm_for_each_dev(). The lock is only needed to protect\nthe state update. Concurrent firmware requests will correctly see the\nFW_LOADER_START_CACHE state and use the piggyback mechanism, which is\nindependently protected by its own fwc->name_lock.", "A flaw was found in the Linux kernel's firmware loader. During system suspend or hibernation, a recursive locking deadlock can occur in the power management notification handler. This happens when memory allocation for asynchronous firmware caching fails, causing a synchronous execution path to attempt to acquire a lock that is already held. This vulnerability can lead to a system hang or unresponsiveness, resulting in a Denial of Service (DoS)."], "name": "CVE-2026-74331", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-74331\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-74331\nhttps://lore.kernel.org/linux-cve-announce/2026081555-CVE-2026-74331-5c62@gregkh/T"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ac39b3ea73aacde876d1d5ee1ca3e2719f771482,806cb8fabfde7f830da5ae87777d52fdf50c4774)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ac39b3ea73aacde876d1d5ee1ca3e2719f771482,7865a1bfd20d10c03b083a5fc392d907ca5099b3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ac39b3ea73aacde876d1d5ee1ca3e2719f771482,490b0385e4cfac691f7b18dde821c13e77b4770b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ac39b3ea73aacde876d1d5ee1ca3e2719f771482,38149b57427c736c08d9aa4c7b87deacd53e9e63)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ac39b3ea73aacde876d1d5ee1ca3e2719f771482,a5b2a68a391b05d54552f13548a72a46c65006f7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ac39b3ea73aacde876d1d5ee1ca3e2719f771482,f25d6e4ec4c257030592bd671f113cf9584c52f0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ac39b3ea73aacde876d1d5ee1ca3e2719f771482,c0f2dedd41fe14dbe076c1672214802fb42cd8c8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ac39b3ea73aacde876d1d5ee1ca3e2719f771482,d3ec78f8f8d48a04a9fac38d47275c34645e5103)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "3.7"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,3.7)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.261,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.212,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.178,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.145,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.97,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.40,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.5,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-15T16:45:10.768788+00:00", "updated": "2026-08-22T00:15:05.517384+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-833"]}