DescriptionAn issue was discovered in the GNU C Library (glibc) 2.36. When the syslog function is passed a crafted input string larger than 1024 bytes, it reads uninitialized memory from the heap and prints it to the target log file, potentially revealing a portion of the contents of the heap.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
glibc (PTS)buster2.28-10+deb10u1fixed
buster (security)2.28-10+deb10u2fixed
bullseye (security)2.31-13+deb11u7fixed
bookworm, bookworm (security)2.36-9+deb12u4fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
glibcsource(unstable)(not affected)


- glibc <not-affected> (Vulnerable code introduced later)
Introduced by:;a=commit;h=a583b6add407c17cdcd4146be3876061a5e1d555 (glibc-2.36)
Fixed by:;a=commit;h=52a5be0df411ef3ff45c10c7c308cb92993d15b1

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