DescriptionCPython v3.12.0 alpha 7 was discovered to contain a heap use-after-free via the function ascii_decode at /Objects/unicodeobject.c.
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
python2.7 (PTS)buster2.7.16-2+deb10u1fixed
buster (security)2.7.16-2+deb10u4fixed
python3.11 (PTS)bookworm3.11.2-6fixed
sid, trixie3.11.9-1fixed
python3.7 (PTS)buster3.7.3-2+deb10u3fixed
buster (security)3.7.3-2+deb10u7fixed
python3.9 (PTS)bullseye3.9.2-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
python2.7source(unstable)(not affected)
python3.10source(unstable)(not affected)
python3.11source(unstable)(not affected)
python3.7source(unstable)(not affected)
python3.9source(unstable)(not affected)


- python3.11 <not-affected> (Vulnerable code not present)
- python3.10 <not-affected> (Vulnerable code not present)
- python3.9 <not-affected> (Vulnerable code not present)
- python3.7 <not-affected> (Vulnerable code not present)
- python2.7 <not-affected> (Vulnerable code not present)
Introduced by: (v3.12.0b1)
Fixed by: (v3.12.0b1)

Search for package or bug name: Reporting problems