DescriptionThe _pcre32_xclass function in pcre_xclass.c in libpcre1 in PCRE 8.40 allows remote attackers to cause a denial of service (invalid memory read) via a crafted file.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs858683

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
pcre3 (PTS)buster2:8.39-12fixed
sid, trixie, bookworm2:8.39-15fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
pcre3sourcewheezy(not affected)


[jessie] - pcre3 <no-dsa> (Minor issue; 32bit character support not enabled)
[wheezy] - pcre3 <not-affected> (Vulnerable code not present)
pcre32 support enabled only in pcre3/1:8.35-4
Bisected and the following change addresses the issue for pcre3: (8.41)

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