Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btrtl: Prevent potential NULL dereference The btrtl_initialize() function checks that rtl_load_file() either had an error or it loaded a zero length file. However, if it loaded a zero length file then the error code is not set correctly. It results in an error pointer vs NULL bug, followed by a NULL pointer dereference. This was detected by Smatch: drivers/bluetooth/btrtl.c:592 btrtl_initialize() warn: passing zero to 'ERR_PTR'
Affected products
linux: linux kernel; debian: debian linux
References10
- git.kernel.org/stable/c/2d7c60c2a38b4b461fa960ad0995136a6bfe0756 Patch
- git.kernel.org/stable/c/324dddea321078a6eeb535c2bff5257be74c9799 Patch
- git.kernel.org/stable/c/3db6605043b50c8bb768547b23e0222f67ceef3e Patch
- git.kernel.org/stable/c/53ceef799dcfc22c734d600811bfc9dd32eaea0a Patch
- git.kernel.org/stable/c/73dc99c0ea94abd22379b2d82cacbc73f3e18ec1 Patch
- git.kernel.org/stable/c/aaf356f872a60db1e96fb762a62c4607fd22741f Patch
- git.kernel.org/stable/c/c3e9717276affe59fd8213706db021b493e81e34 Patch
- git.kernel.org/stable/c/d8441818690d795232331bd8358545c5c95b6b72 Patch
- lists.debian.org/debian-lts-announce/2025/05/msg00030.html Mailing List
- lists.debian.org/debian-lts-announce/2025/05/msg00045.html Mailing List
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 10 · as of 7 November 2026
- CWE
- CWE-476
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.