CVE-2026-74646
Description
In 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.
How to fix
- Linux Linux3f265e405e5ef85030c3777262e18bb556bc8724, a902fe1f80f58a2335b6be1131866f827ec44d1a, af6345159abcbaa550518f31990d2a9558c2d369, efd02f8d1a7449f15809bc18d3cd41aafea75d7e, b85a0e91d7d6cd06a53c881a46f749cfcef416a2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 76e8e4ace1ed2c97dba3b1370e0e105e07c572bc ≤ v < 3f265e405e5ef85030c3777262e18bb556bc8724, 76e8e4ace1ed2c97dba3b1370e0e105e07c572bc ≤ v < a902fe1f80f58a2335b6be1131866f827ec44d1a, 76e8e4ace1ed2c97dba3b1370e0e105e07c572bc ≤ v < af6345159abcbaa550518f31990d2a9558c2d369, 76e8e4ace1ed2c97dba3b1370e0e105e07c572bc ≤ v < efd02f8d1a7449f15809bc18d3cd41aafea75d7e, 76e8e4ace1ed2c97dba3b1370e0e105e07c572bc ≤ v < b85a0e91d7d6cd06a53c881a46f749cfcef416a2, 6.2 | 3f265e405e5ef85030c3777262e18bb556bc8724, a902fe1f80f58a2335b6be1131866f827ec44d1a, af6345159abcbaa550518f31990d2a9558c2d369, efd02f8d1a7449f15809bc18d3cd41aafea75d7e, b85a0e91d7d6cd06a53c881a46f749cfcef416a2 |
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