SB2025031258 - NULL pointer dereference in Linux kernel smb client
Published: March 12, 2025 Updated: May 11, 2025
Security Bulletin ID
SB2025031258
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) NULL pointer dereference (CVE-ID: CVE-2025-21844)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the fs/smb/client/smb2ops.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/24e8e4523d3071bc5143b0db9127d511489f7b3b
- https://git.kernel.org/stable/c/554736b583f529ee159aa95af9a0cbc12b5ffc96
- https://git.kernel.org/stable/c/860ca5e50f73c2a1cef7eefc9d39d04e275417f7
- https://git.kernel.org/stable/c/9e5d99a4cf2e23c716b44862975548415fae5391
- https://git.kernel.org/stable/c/a9b0b4b29877cb4dc5d0842b59b5ccbacddb85bd
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.17