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.
Metrics
CVSS 3.1 7.8/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HAffected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 76e8e4ace1ed2c97dba3b1370e0e105e07c572bc, < 3f265e405e5ef85030c3777262e18bb556bc8724; >= 76e8e4ace1ed2c97dba3b1370e0e105e07c572bc, < a902fe1f80f58a2335b6be1131866f827ec44d1a; >= 76e8e4ace1ed2c97dba3b1370e0e105e07c572bc, < af6345159abcbaa550518f31990d2a9558c2d369; >= 76e8e4ace1ed2c97dba3b1370e0e105e07c572bc, < efd02f8d1a7449f15809bc18d3cd41aafea75d7e; >= 76e8e4ace1ed2c97dba3b1370e0e105e07c572bc, < b85a0e91d7d6cd06a53c881a46f749cfcef416a2 |
| Linux | Linux | 6.2 |
References
- https://git.kernel.org/stable/c/3f265e405e5ef85030c3777262e18bb556bc8724
- https://git.kernel.org/stable/c/a902fe1f80f58a2335b6be1131866f827ec44d1a
- https://git.kernel.org/stable/c/af6345159abcbaa550518f31990d2a9558c2d369
- https://git.kernel.org/stable/c/b85a0e91d7d6cd06a53c881a46f749cfcef416a2
- https://git.kernel.org/stable/c/efd02f8d1a7449f15809bc18d3cd41aafea75d7e
Timeline
- Published
- Aug 22, 2026
- Last modified
- Oct 14, 2026
- NVD status
- Received