CVE-2022-50530NULL Pointer Dereference in Linux

Severity
5.5MEDIUMNVD
EPSS
0.0%
top 95.28%
CISA KEV
Not in KEV
Exploit
No known exploits
Timeline
PublishedOct 7
Latest updateApr 19

Description

In the Linux kernel, the following vulnerability has been resolved: blk-mq: fix null pointer dereference in blk_mq_clear_rq_mapping() Our syzkaller report a null pointer dereference, root cause is following: __blk_mq_alloc_map_and_rqs set->tags[hctx_idx] = blk_mq_alloc_map_and_rqs blk_mq_alloc_map_and_rqs blk_mq_alloc_rqs // failed due to oom alloc_pages_node // set->tags[hctx_idx] is still NULL blk_mq_free_rqs drv_tags = set->tags[hctx_idx]; // null pointer dereference is triggered blk_mq_cl

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 Packages4 packages

NVDlinux/linux_kernel5.166.0.6+1
Debianlinux/linux_kernel< 6.0.6-1+2
CVEListV5linux/linux63064be150e4b1ba1e4af594ef5aa81adf21a52d6a440e6d04431e774dc084abe88c106e2a474c1a+2
debiandebian/linux< linux 6.0.6-1 (bookworm)

Patches

🔴Vulnerability Details

3
VulDB
Linux Kernel up to 6.0.5 blk_mq_clear_rq_mapping null pointer dereference (Nessus ID 302981 / WID-SEC-2025-2229)2026-04-19
OSV
CVE-2022-50530: In the Linux kernel, the following vulnerability has been resolved: blk-mq: fix null pointer dereference in blk_mq_clear_rq_mapping() Our syzkaller re2025-10-07
GHSA
GHSA-g6cv-6crr-3rp7: In the Linux kernel, the following vulnerability has been resolved: blk-mq: fix null pointer dereference in blk_mq_clear_rq_mapping() Our syzkaller2025-10-07

📋Vendor Advisories

2
Red Hat
kernel: blk-mq: fix null pointer dereference in blk_mq_clear_rq_mapping()2025-10-07
Debian
CVE-2022-50530: linux - In the Linux kernel, the following vulnerability has been resolved: blk-mq: fix...2022