misc: fastrpc: take fl->lock when moving mmaps on interrupted invoke

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-74646
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-22 16:16:37 UTC
Updated2026-08-22 16:16:37 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: take fl->lock when moving mmaps on interrupted invoke When an invoke is interrupted by a signal, wait_for_completion_interruptible() returns -ERESTARTSYS and fastrpc_internal_invoke() moves every buffer from fl->mmaps onto cctx->invoke_interrupted_mmaps. This list_del()/list_add_tail() walk runs without holding fl->lock, the lock that serialises fl->mmaps in fastrpc_req_mmap() and fastrpc_req_munmap() everywhere else. Take fl->lock around the move, matching every other fl->mmaps accessor.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 76e8e4ace1ed2c97dba3b1370e0e105e07c572bc 3f265e405e5ef85030c3777262e18bb556bc8724 git Not specified
CNA Linux Linux affected 76e8e4ace1ed2c97dba3b1370e0e105e07c572bc a902fe1f80f58a2335b6be1131866f827ec44d1a git Not specified
CNA Linux Linux affected 76e8e4ace1ed2c97dba3b1370e0e105e07c572bc af6345159abcbaa550518f31990d2a9558c2d369 git Not specified
CNA Linux Linux affected 76e8e4ace1ed2c97dba3b1370e0e105e07c572bc efd02f8d1a7449f15809bc18d3cd41aafea75d7e git Not specified
CNA Linux Linux affected 76e8e4ace1ed2c97dba3b1370e0e105e07c572bc b85a0e91d7d6cd06a53c881a46f749cfcef416a2 git Not specified
CNA Linux Linux affected 6.2 Not specified
CNA Linux Linux unaffected 6.2 semver Not specified
CNA Linux Linux unaffected 6.6.152 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.104 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.45 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.9 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/a902fe1f80f58a2335b6be1131866f827ec44d1a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/b85a0e91d7d6cd06a53c881a46f749cfcef416a2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3f265e405e5ef85030c3777262e18bb556bc8724 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/efd02f8d1a7449f15809bc18d3cd41aafea75d7e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/af6345159abcbaa550518f31990d2a9558c2d369 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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