DescriptionIn the Linux kernel 5.0.21, mounting a crafted f2fs filesystem image can cause __remove_dirty_segment slab-out-of-bounds write access because an array is bounded by the number of dirty types (8) but the array index can exceed this.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)buster4.19.249-2vulnerable
buster (security)4.19.282-1vulnerable
bullseye (security)5.10.179-1vulnerable
bookworm, sid6.1.27-1vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


[bookworm] - linux <no-dsa> (Minor issue, no upstream fix available)
[bullseye] - linux <no-dsa> (Minor issue, no upstream fix available)
[buster] - linux <no-dsa> (Minor issue)
[stretch] - linux <ignored> (Minor issue; f2fs is not supportable)

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