SB20251001174 - Memory leak in Linux kernel block
Published: October 1, 2025 Updated: October 27, 2025
Security Bulletin ID
SB20251001174
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Memory leak (CVE-ID: CVE-2022-50434)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the blk_mq_register_hctx() function in block/blk-mq-sysfs.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/02bc8bc6eab03c84373281b85cb6e98747172ff7
- https://git.kernel.org/stable/c/33e8a3f61814ea30615d0fafaf50477975d6c1ca
- https://git.kernel.org/stable/c/4b7a21c57b14fbcd0e1729150189e5933f5088e9
- https://git.kernel.org/stable/c/4b7fafa5f39b15c3a6ca3b95e534d05d6904cc95
- https://git.kernel.org/stable/c/654870789c3c1b9763316ef1c71d7a449127b175
- https://git.kernel.org/stable/c/87fd18016a47ea8ae12641377a390172c4aa97a7
- https://git.kernel.org/stable/c/cb186eb47fb9dd327bdefa15f0c5fc55c53a40dd
- https://git.kernel.org/stable/c/e8022da1fa2fdf2fa204b445dd3354e7a66d085a
- https://git.kernel.org/stable/c/eff45bfbc25a2509a6362dea6e699e14083c693c
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.86