CVE-2022-50329

HIGH

Linux Kernel 5.15.86-5.15.87, 6.0.16-6.0.17, 6.1.2-6.1.3 - Use-After-Free in BFQ Scheduler

Title source: llm
STIX 2.1

Description

In the Linux kernel, the following vulnerability has been resolved: block, bfq: fix uaf for bfqq in bfq_exit_icq_bfqq Commit 64dc8c732f5c ("block, bfq: fix possible uaf for 'bfqq->bic'") will access 'bic->bfqq' in bic_set_bfqq(), however, bfq_exit_icq_bfqq() can free bfqq first, and then call bic_set_bfqq(), which will cause uaf. Fix the problem by moving bfq_exit_bfqq() behind bic_set_bfqq().

References (5)

Core 5

Scores

CVSS v3 7.8
EPSS 0.0015
EPSS Percentile 4.9%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-416
Status published
Products (15)
linux/Kernel 5.15.86 - 5.15.87linux
linux/Kernel 6.0.16 - 6.0.17linux
linux/Kernel 6.1.2 - 6.1.3linux
Linux/Linux 094f3d9314d67691cb21ba091c1b528f6e3c4893 - 7949b0df3dd9f4817ed4a4e989fa9ee81df6205f
Linux/Linux 5.15.86 - 5.15.87
Linux/Linux 5533742c7cb1bc9b1f0bf401cc397d44a3a9e07a - 1425f1bb5df5239021fd09ebc2a5e8070e705d36
Linux/Linux 6.0.16 - 6.0.17
Linux/Linux 6.1.2 - 6.1.3
Linux/Linux 64dc8c732f5c2b406cc752e6aaa1bd5471159cab - 246cf66e300b76099b5dbd3fdd39e9a5dbc53f02
Linux/Linux 761564d93c8265f65543acf0a576b32d66bfa26a - 1ed959fef5b1c6f1a7a3fbea543698c30ebd6678
... and 5 more
Published Sep 15, 2025
Tracked Since Feb 18, 2026