CVE-2023-53292 — NULL Pointer Dereference in Linux

CWE-476 — NULL Pointer Dereference6 documents6 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 95.76%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
6
LinuxLinux KernelDebian Linux+3 more
Timeline
PublishedSep 16

Description

In the Linux kernel, the following vulnerability has been resolved: blk-mq: fix NULL dereference on q->elevator in blk_mq_elv_switch_none After grabbing q->sysfs_lock, q->elevator may become NULL because of elevator switch. Fix the NULL dereference on q->elevator by checking it with lock.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages7 packages

▶NVDlinux/linux_kernel< 6.4.7
▶Debianlinux/linux_kernel< 6.4.11-1+1
▶CVEListV5linux/linux5fd7a84a09e640016fe106dd3e992f5210e23dc7 — 3e977386521b71471e66ec2ba82efdfcc456adf2+2
▶debiandebian/linux< linux 6.4.11-1 (forky)

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

2
GHSA
GHSA-j898-m92w-4243: In the Linux kernel, the following vulnerability has been resolved: blk-mq: fix NULL dereference on q->elevator in blk_mq_elv_switch_none After grab↗2025-09-16
▶
OSV
CVE-2023-53292: In the Linux kernel, the following vulnerability has been resolved: blk-mq: fix NULL dereference on q->elevator in blk_mq_elv_switch_none After grabbi↗2025-09-16
▶

📋Vendor Advisories

3
Red Hat
kernel: blk-mq: fix NULL dereference on q->elevator in blk_mq_elv_switch_none↗2025-09-16
▶
Microsoft
blk-mq: fix NULL dereference on q->elevator in blk_mq_elv_switch_none↗2025-09-09
▶
Debian
CVE-2023-53292: linux - In the Linux kernel, the following vulnerability has been resolved: blk-mq: fix...↗2023
▶
CVE-2023-53292 — NULL Pointer Dereference in Linux | cvebase