CVE-2026-53160
misc: fastrpc: fix use-after-free race in fastrpc_map_create
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Jun 25, 2026 |
Stay Ahead of the Next One
Get instant alerts for linux linux
Be the first to know when new unknown vulnerabilities affecting linux linux are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
Linux / Linux
0b70ec82b309a4093106ff399da1911ad23b52d3 < 0a3b87293fbd34fda651e6aead9964f84b893962 d7513b47082c08105e837b06cebeb3f07a5fa56f < 8b080c89183196fd3e49212f2a1a1c4a29335b9c 802359a52676176b18713e33caa17572ad009057 < 5b0166112019d1dce30b976ab28fd67f7f0be532 10df039834f84a297c72ec962c0f9b7c8c5ca31a < 992f121796b7ca83a5a8b93da24e971363206218 10df039834f84a297c72ec962c0f9b7c8c5ca31a < f20f6512ecb75c816e0debf4551a138f098615c4 10df039834f84a297c72ec962c0f9b7c8c5ca31a < 07ebe87915d8accdaba20c4f88c5ae430fe62fbb f3f59bab68e9bc714f757ab22f3fb36153014043 6.1.156 < 6.1.176 6.6.112 < 6.6.143 6.12.53 < 6.12.94 6.17.3 < 6.18
Linux / Linux
6.18
References
git.kernel.org: https://git.kernel.org/stable/c/0a3b87293fbd34fda651e6aead9964f84b893962 git.kernel.org: https://git.kernel.org/stable/c/8b080c89183196fd3e49212f2a1a1c4a29335b9c git.kernel.org: https://git.kernel.org/stable/c/5b0166112019d1dce30b976ab28fd67f7f0be532 git.kernel.org: https://git.kernel.org/stable/c/992f121796b7ca83a5a8b93da24e971363206218 git.kernel.org: https://git.kernel.org/stable/c/f20f6512ecb75c816e0debf4551a138f098615c4 git.kernel.org: https://git.kernel.org/stable/c/07ebe87915d8accdaba20c4f88c5ae430fe62fbb