CVE-2026-53160In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: fix use-after-free race in fastrpc_map_create fastrpc_map_lookup returns a raw pointer after releasing fl->lock.
Updated under an hour ago ()
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In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: fix use-after-free race in fastrpc_map_create fastrpc_map_lookup returns a raw pointer after releasing fl->lock. The caller fastrpc_map_create then calls fastrpc_map_get (kref_get_unless_zero) on this unprotected pointer. A concurrent MEM_UNMAP can free the map between the lock release and the kref operation, resulting in a use-after-free on the freed slab object. Restore the take_ref parameter to fastrpc_map_lookup so the reference is acquired atomically under fl->lock before the pointer is exposed to the caller.
- CVSS
- 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-416
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jul 6, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
linux linux_kernel linux:linux_kernel | from 6.1.156 before 6.1.176; from 6.6.112 before 6.6.143; from 6.12.53 before 6.12.94; from 6.17.3 before 6.18.36; from 6.19 before 7.0.13; 7.1; 7.1; 7.1; and 4 more ranges | NVD |
References
- https://git.kernel.org/stable/c/07ebe87915d8accdaba20c4f88c5ae430fe62fbbpatch
- https://git.kernel.org/stable/c/0a3b87293fbd34fda651e6aead9964f84b893962patch
- https://git.kernel.org/stable/c/5b0166112019d1dce30b976ab28fd67f7f0be532patch
- https://git.kernel.org/stable/c/8b080c89183196fd3e49212f2a1a1c4a29335b9cpatch
- https://git.kernel.org/stable/c/992f121796b7ca83a5a8b93da24e971363206218patch
- https://git.kernel.org/stable/c/f20f6512ecb75c816e0debf4551a138f098615c4patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.