CVE-2020-12655

NameCVE-2020-12655
DescriptionAn issue was discovered in xfs_agf_verify in fs/xfs/libxfs/xfs_alloc.c in the Linux kernel through 5.6.10. Attackers may trigger a sync of excessive duration via an XFS v5 image with crafted metadata, aka CID-d0c7feaf8767.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-2323-1, DLA-2420-1
NVD severitylow

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)stretch4.9.228-1vulnerable
stretch (security)4.9.240-1fixed
buster4.19.146-1fixed
buster (security)4.19.152-1fixed
bullseye, sid5.9.1-1fixed
linux-4.19 (PTS)stretch (security)4.19.152-1~deb9u1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcestretch4.9.240-1DLA-2420-1
linuxsourcebuster4.19.131-1
linuxsource(unstable)5.6.14-1
linux-4.19sourcestretch4.19.132-1~deb9u2DLA-2323-1

Notes

https://git.kernel.org/linus/d0c7feaf87678371c2c09b3709400be416b2dc62 (5.7-rc1)

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