CVE-2026-23233: f2fs: fix to avoid mapping wrong physical block for swapfile
f2fs: fix to avoid mapping wrong physical block for swapfile
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 6.1.176-1Fixed in 6.1.190-1Fixed in 6.12.107-1Fixed in 6.12.113-1Fixed in 7.2.12-1Fixed in 7.2.13-1 - Compensating control
In F2FS swapfile handling, look up block-mapping information after migrating all blocks in the tail of the swapfile so subsequent extents are processed.
Event History
Frequently Asked Questions
What is the severity of CVE-2026-23233?
The severity of CVE-2026-23233 is classified as medium due to the potential risk of incorrect physical block mapping for swapfiles.
How do I fix CVE-2026-23233?
To mitigate CVE-2026-23233, users should upgrade their Linux Kernel to version 6.7 or later where the vulnerability has been addressed.
What systems are affected by CVE-2026-23233?
CVE-2026-23233 affects the Linux Kernel version 6.6 and earlier deployments.
What does CVE-2026-23233 involve?
CVE-2026-23233 involves an issue in the f2fs file system that can lead to mapping the wrong physical block for swapfiles.
Who reported CVE-2026-23233?
CVE-2026-23233 was reported by Xiaolong Guo through a bug submission in the kernel bugzilla.