SB2026050950 - Use of Uninitialized Variable in Linux kernel f2fs
Published: May 9, 2026
Security Bulletin ID
SB2026050950
CSH 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 vulnerability.
1) Use of Uninitialized Variable (CVE-ID: CVE-2026-43349)
CWE-ID: CWE-457 - Use of Uninitialized Variable
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to uninitialized memory access in f2fs_sanity_check_node_footer when processing a crafted f2fs filesystem image during mount or inode read operations. A local user can mount a specially crafted filesystem image to cause a denial of service.
Remediation
Install update from vendor's website.