{"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"}}}}