CVE-2023-52502: Linux Kernel

High severity, CVSS 8.8. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: net: nfc: fix races in nfc_llcp_sock_get() and nfc_llcp_sock_get_sn() Sili Luo reported a race in nfc_llcp_sock_get(), leading to UAF. Getting a reference on the socket found in a lookup while holding a lock should happen before releasing the lock. nfc_llcp_sock_get_sn() has a similar problem. Finally nfc_llcp_recv_snl() needs to make sure the socket found by nfc_llcp_sock_from_sn() does not disappear.

Affected products

• Linux Linux Kernel: from 3.6, before 4.19.297 (fixed in 4.19.297); from 4.20, before 5.4.259 (fixed in 5.4.259); from 5.5, before 5.10.199 (fixed in 5.10.199); from 5.11, before 5.15.136 (fixed in 5.15.136); from 5.16, before 6.1.59 (fixed in 6.1.59); from 6.2, before 6.5.8 (fixed in 6.5.8); …

Published 2024-03-02. Last modified 2026-08-04.