SB20260918244 - Missing Release of Resource after Effective Lifetime in Linux kernel isofs
Published: September 18, 2026
Security Bulletin ID
SB20260918244
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Missing Release of Resource after Effective Lifetime (CVE-ID: CVE-2026-90434)
CWE-ID: CWE-772 - Missing Release of Resource after Effective Lifetime
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a local user to exhaust buffer-head resources.
The vulnerability exists due to failure to release a buffer-head reference in zisofs_fill_pages() when successfully reading compressed block pointer tables. A local user can cause zisofs_fill_pages() to read compressed block pointer tables to exhaust buffer-head resources.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/0c2c54a7d174edc845f7bae24179fe72a926d10f
- https://git.kernel.org/stable/c/106e1a3b2b3454fbda63a59e9290cb9a253f81aa
- https://git.kernel.org/stable/c/2f7dd9b86fe4076059e6a4a2a2c5d565afd76b9e
- https://git.kernel.org/stable/c/3371d30a97a257b7b5f2c8009612e9d452180f0a
- https://git.kernel.org/stable/c/5677737c2cedf417c0fcf61540b9cef0e62273d4
- https://git.kernel.org/stable/c/dbcc7d1b818162aeab2e97fd217d86546d9fde15
- https://git.kernel.org/stable/c/ec33e6b7a1de20d7e623b12633191a855445657d
- https://git.kernel.org/stable/c/f2a1611065c700a374b31c5cc8a7587f5e3bfe73