CVE-2023-4273

NameCVE-2023-4273
DescriptionA flaw was found in the exFAT driver of the Linux kernel. The vulnerability exists in the implementation of the file name reconstruction function, which is responsible for reading file name entries from a directory index and merging file name parts belonging to one file into a single long file name. Since the file name characters are copied into a stack variable, a local privileged attacker could use this flaw to overflow the kernel stack.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-3623-1, DSA-5480-1, DSA-5492-1, ELA-991-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)jessie, jessie (lts)3.16.84-1vulnerable
stretch (security)4.9.320-2vulnerable
stretch (lts), stretch4.9.320-3vulnerable
buster4.19.249-2fixed
buster (security)4.19.304-1fixed
bullseye5.10.209-2fixed
bullseye (security)5.10.216-1fixed
bookworm6.1.76-1fixed
bookworm (security)6.1.90-1fixed
trixie6.7.12-1fixed
sid6.8.11-1fixed
linux-5.10 (PTS)jessie, jessie (lts)5.10.216-1~deb8u1fixed
stretch (lts), stretch5.10.216-1~deb9u1fixed
buster (security)5.10.216-1~deb10u1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcejessie(unfixed)end-of-life
linuxsourcestretch(unfixed)end-of-life
linuxsourcebuster(not affected)
linuxsourcebullseye5.10.191-1DSA-5480-1
linuxsourcebookworm6.1.52-1DSA-5492-1
linuxsource(unstable)6.4.11-1
linux-5.10sourcejessie5.10.197-1~deb8u1ELA-991-1
linux-5.10sourcestretch5.10.197-1~deb9u1ELA-991-1
linux-5.10sourcebuster5.10.197-1~deb10u1DLA-3623-1

Notes

[buster] - linux <not-affected> (Vulnerable code not present)
https://git.kernel.org/linus/d42334578eba1390859012ebb91e1e556d51db49 (6.5-rc5)
https://dfir.ru/2023/08/23/cve-2023-4273-a-vulnerability-in-the-linux-exfat-driver/

Search for package or bug name: Reporting problems