CVE-2024-53166 — Use After Free in Linux
Severity
7.8HIGHNVD
OSV8.8
EPSS
0.0%
top 99.03%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedDec 27
Latest updateJun 12
Description
In the Linux kernel, the following vulnerability has been resolved:
block, bfq: fix bfqq uaf in bfq_limit_depth()
Set new allocated bfqq to bic or remove freed bfqq from bic are both
protected by bfqd->lock, however bfq_limit_depth() is deferencing bfqq
from bic without the lock, this can lead to UAF if the io_context is
shared by multiple tasks.
For example, test bfq with io_uring can trigger following UAF in v6.6:
BUG: KASAN: slab-use-after-free in bfqq_group+0x15/0x50
Call Trace:
dump_s…
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9
Affected Packages8 packages
Patches
🔴Vulnerability Details
14OSV▶
linux, linux-aws, linux-azure, linux-azure-6.8, linux-ibm, linux-lowlatency, linux-lowlatency-hwe-6.8, linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency, linux-oem-6.8, linux-oracle, linux-oracl↗2025-04-23