{"id":"CVE-2025-38374","state":"PUBLISHED","title":"optee: ffa: fix sleep in atomic context","description":"In the Linux kernel, the following vulnerability has been resolved:\n\noptee: ffa: fix sleep in atomic context\n\nThe OP-TEE driver registers the function notif_callback() for FF-A\nnotifications. However, this function is called in an atomic context\nleading to errors like this when processing asynchronous notifications:\n\n | BUG: sleeping function called from invalid context at kernel/locking/mutex.c:258\n | in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 9, name: kworker/0:0\n | preempt_count: 1, expected: 0\n | RCU nest depth: 0, expected: 0\n | CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted 6.14.0-00019-g657536ebe0aa #13\n | Hardware name: linux,dummy-virt (DT)\n | Workqueue: ffa_pcpu_irq_notification notif_pcpu_irq_work_fn\n | Call trace:\n |  show_stack+0x18/0x24 (C)\n |  dump_stack_lvl+0x78/0x90\n |  dump_stack+0x18/0x24\n |  __might_resched+0x114/0x170\n |  __might_sleep+0x48/0x98\n |  mutex_lock+0x24/0x80\n |  optee_get_msg_arg+0x7c/0x21c\n |  simple_call_with_arg+0x50/0xc0\n |  optee_do_bottom_half+0x14/0x20\n |  notif_callback+0x3c/0x48\n |  handle_notif_callbacks+0x9c/0xe0\n |  notif_get_and_handle+0x40/0x88\n |  generic_exec_single+0x80/0xc0\n |  smp_call_function_single+0xfc/0x1a0\n |  notif_pcpu_irq_work_fn+0x2c/0x38\n |  process_one_work+0x14c/0x2b4\n |  worker_thread+0x2e4/0x3e0\n |  kthread+0x13c/0x210\n |  ret_from_fork+0x10/0x20\n\nFix this by adding work queue to process the notification in a\nnon-atomic context.","publishedAt":"2025-07-25T12:53:16.785Z","updatedAt":"2026-05-11T21:26:45.292Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d0476a59de064205f4aaa8f7c6d6f32bc28a44d4","status":"affected","lessThan":"5f28563f0c6862c99eb115c918421d9b73f137ad","versionType":"git"},{"version":"d0476a59de064205f4aaa8f7c6d6f32bc28a44d4","status":"affected","lessThan":"f27cf15783bd60063c6c97434cbd67ebd91d8db5","versionType":"git"},{"version":"d0476a59de064205f4aaa8f7c6d6f32bc28a44d4","status":"affected","lessThan":"312d02adb959ea199372f375ada06e0186f651e4","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/tee/optee/ffa_abi.c","drivers/tee/optee/optee_private.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.8","versionType":"semver"},{"version":"6.12.37","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.15.6","status":"unaffected","lessThanOrEqual":"6.15.*","versionType":"semver"},{"version":"6.16","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/tee/optee/ffa_abi.c","drivers/tee/optee/optee_private.h"]}],"references":["https://git.kernel.org/stable/c/5f28563f0c6862c99eb115c918421d9b73f137ad","https://git.kernel.org/stable/c/f27cf15783bd60063c6c97434cbd67ebd91d8db5","https://git.kernel.org/stable/c/312d02adb959ea199372f375ada06e0186f651e4"],"weaknesses":[],"ingestedAt":"2026-10-29T20:09:09.358Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/38xxx/CVE-2025-38374.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-38374","state":"PUBLISHED","datePublished":"2025-07-25T12:53:16.785Z","dateUpdated":"2026-05-11T21:26:45.292Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-04-16T04:51:24.009Z"},"containers":{"cna":{"title":"optee: ffa: fix sleep in atomic context","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\noptee: ffa: fix sleep in atomic context\n\nThe OP-TEE driver registers the function notif_callback() for FF-A\nnotifications. However, this function is called in an atomic context\nleading to errors like this when processing asynchronous notifications:\n\n | BUG: sleeping function called from invalid context at kernel/locking/mutex.c:258\n | in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 9, name: kworker/0:0\n | preempt_count: 1, expected: 0\n | RCU nest depth: 0, expected: 0\n | CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted 6.14.0-00019-g657536ebe0aa #13\n | Hardware name: linux,dummy-virt (DT)\n | Workqueue: ffa_pcpu_irq_notification notif_pcpu_irq_work_fn\n | Call trace:\n |  show_stack+0x18/0x24 (C)\n |  dump_stack_lvl+0x78/0x90\n |  dump_stack+0x18/0x24\n |  __might_resched+0x114/0x170\n |  __might_sleep+0x48/0x98\n |  mutex_lock+0x24/0x80\n |  optee_get_msg_arg+0x7c/0x21c\n |  simple_call_with_arg+0x50/0xc0\n |  optee_do_bottom_half+0x14/0x20\n |  notif_callback+0x3c/0x48\n |  handle_notif_callbacks+0x9c/0xe0\n |  notif_get_and_handle+0x40/0x88\n |  generic_exec_single+0x80/0xc0\n |  smp_call_function_single+0xfc/0x1a0\n |  notif_pcpu_irq_work_fn+0x2c/0x38\n |  process_one_work+0x14c/0x2b4\n |  worker_thread+0x2e4/0x3e0\n |  kthread+0x13c/0x210\n |  ret_from_fork+0x10/0x20\n\nFix this by adding work queue to process the notification in a\nnon-atomic context."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d0476a59de064205f4aaa8f7c6d6f32bc28a44d4","status":"affected","lessThan":"5f28563f0c6862c99eb115c918421d9b73f137ad","versionType":"git"},{"version":"d0476a59de064205f4aaa8f7c6d6f32bc28a44d4","status":"affected","lessThan":"f27cf15783bd60063c6c97434cbd67ebd91d8db5","versionType":"git"},{"version":"d0476a59de064205f4aaa8f7c6d6f32bc28a44d4","status":"affected","lessThan":"312d02adb959ea199372f375ada06e0186f651e4","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/tee/optee/ffa_abi.c","drivers/tee/optee/optee_private.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.8","versionType":"semver"},{"version":"6.12.37","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.15.6","status":"unaffected","lessThanOrEqual":"6.15.*","versionType":"semver"},{"version":"6.16","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/tee/optee/ffa_abi.c","drivers/tee/optee/optee_private.h"]}],"references":[{"url":"https://git.kernel.org/stable/c/5f28563f0c6862c99eb115c918421d9b73f137ad"},{"url":"https://git.kernel.org/stable/c/f27cf15783bd60063c6c97434cbd67ebd91d8db5"},{"url":"https://git.kernel.org/stable/c/312d02adb959ea199372f375ada06e0186f651e4"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T21:26:45.292Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"6.12.37"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"6.15.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.8","versionEndExcluding":"6.16"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}