DescriptionThe check_mtab function in client/mount.cifs.c in mount.cifs in smbfs in Samba 3.5.10 and earlier does not properly verify that the (1) device name and (2) mountpoint strings are composed of valid characters, which allows local users to cause a denial of service (mtab corruption) via a crafted string. NOTE: this vulnerability exists because of an incorrect fix for CVE-2010-0547.
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
cifs-utils (PTS)buster2:6.8-2fixed
buster (security)2:6.8-2+deb10u1fixed
bullseye (security), bullseye2:6.11-3.1+deb11u1fixed
bookworm, sid2:6.14-1.1fixed
samba (PTS)buster, buster (security)2:4.9.5+dfsg-5+deb10u3fixed
bullseye (security)2:4.13.13+dfsg-1~deb11u5fixed
bookworm, sid2:4.16.4+dfsg-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


cifs-utils was split off from the samba source package with 2:3.4.7~dfsg-2, so marking it as fixed;a=commit;h=1e7a32924b22d1f786b6f490ce8590656f578f91

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