CVE-2021-31916

NameCVE-2021-31916
DescriptionAn out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel before 5.12. A bound check failure allows an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability.
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-2689-1, DLA-2690-1
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux (PTS)stretch4.9.228-1vulnerable
stretch (security)4.9.272-2fixed
buster4.19.194-1fixed
buster (security)4.19.194-3fixed
bullseye5.10.46-2fixed
sid5.10.46-3fixed
linux-4.19 (PTS)stretch (security)4.19.194-3~deb9u1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
linuxsourcestretch4.9.272-1DLA-2689-1
linuxsourcebuster4.19.194-1
linuxsource(unstable)5.10.28-1
linux-4.19sourcestretch4.19.194-1~deb9u1DLA-2690-1

Notes

https://git.kernel.org/linus/4edbe1d7bcffcd6269f3b5eb63f710393ff2ec7a
https://www.openwall.com/lists/oss-security/2021/03/28/1

Search for package or bug name: Reporting problems