SB20251230126 - Memory leak in Linux kernel jbd2
Published: December 30, 2025 Updated: December 31, 2025
Security Bulletin ID
SB20251230126
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-2022-50839)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the jbd2_fc_wait_bufs() function in fs/jbd2/journal.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/68ed9c76b2affd47177b92495446abb7262d0ef7
- https://git.kernel.org/stable/c/7a33dde572fceb45d02d188e0213c47059401c93
- https://git.kernel.org/stable/c/9b073d73725366d886b711b74e058c02f51e7a0e
- https://git.kernel.org/stable/c/e0d5fc7a6d80ac2406c7dfc6bb625201d0250a8a
- https://git.kernel.org/stable/c/e7385c868ee038d6a0cb0e85c22d2741e7910fd5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.75