CVE catalog

CVE-2018-9251

libxml2: CVE-2018-9251

Severity: Low · CVSS 3.5CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
Published: Apr 3, 2018, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 2.36% · Oct 27, 2026

The xz_decomp function in xzlib.c in libxml2 2.9.8, if --with-lzma is used, allows remote attackers to cause a denial of service (infinite loop) via a crafted XML file that triggers LZMA_MEMLIMIT_ERROR, as demonstrated by xmllint, a different vulnerability than CVE-2015-8035.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	libxml2	sid	`2.15.4+dfsg-1`	not affected
Debian	libxml2	forky	`2.15.4+dfsg-1`	not affected
Debian	libxml2	trixie	`2.12.7+dfsg+really2.9.14-2.1+deb13u3`	not affected
Debian	libxml2	trixie-security	`2.12.7+dfsg+really2.9.14-2.1+deb13u1`	not affected
Debian	libxml2	bookworm	`2.9.14+dfsg-1.3~deb12u6`	not affected
Debian	libxml2	bookworm-security	`2.9.14+dfsg-1.3~deb12u4`	not affected
Alpine	libxml2	3.10	`2.9.8-r1`	fixed
Alpine	libxml2	3.11	`2.9.8-r1`	fixed
Alpine	libxml2	3.12	`2.9.8-r1`	fixed
Alpine	libxml2	3.13	`2.9.8-r1`	fixed
Alpine	libxml2	3.14	`2.9.8-r1`	fixed
Alpine	libxml2	3.15	`2.9.8-r1`	fixed
Alpine	libxml2	3.16	`2.9.8-r1`	fixed
Alpine	libxml2	3.17	`2.9.8-r1`	fixed
Alpine	libxml2	3.18	`2.9.8-r1`	fixed
Alpine	libxml2	3.19	`2.9.8-r1`	fixed
Alpine	libxml2	3.20	`2.9.8-r1`	fixed
Alpine	libxml2	3.21	`2.9.8-r1`	fixed
Alpine	libxml2	3.22	`2.9.8-r1`	fixed
Alpine	libxml2	3.23	`2.9.8-r1`	fixed
Alpine	libxml2	3.24	`2.9.8-r1`	fixed
Alpine	libxml2	3.5	`2.9.8-r1`	fixed
Alpine	libxml2	3.6	`2.9.8-r1`	fixed
Alpine	libxml2	3.7	`2.9.8-r1`	fixed
Alpine	libxml2	3.8	`2.9.8-r1`	fixed
Alpine	libxml2	3.9	`2.9.8-r1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	libxml2	source	sid	`Not affected`	unimportant	Not reported	Not reported
Debian	libxml2	source	forky	`Not affected`	unimportant	Not reported	Not reported
Debian	libxml2	source	trixie	`Not affected`	unimportant	Not reported	Not reported
Debian	libxml2	source	bookworm	`Not affected`	unimportant	Not reported	Not reported
Alpine	libxml2	apk	3.10	`2.9.8-r1`	Not reported	ALPINE-CVE-2018-9251	Not reported
Alpine	libxml2	apk	3.11	`2.9.8-r1`	Not reported	ALPINE-CVE-2018-9251	Not reported
Alpine	libxml2	apk	3.12	`2.9.8-r1`	Not reported	ALPINE-CVE-2018-9251	Not reported
Alpine	libxml2	apk	3.13	`2.9.8-r1`	Not reported	ALPINE-CVE-2018-9251	Not reported
Alpine	libxml2	apk	3.14	`2.9.8-r1`	Not reported	ALPINE-CVE-2018-9251	Not reported
Alpine	libxml2	apk	3.15	`2.9.8-r1`	Not reported	ALPINE-CVE-2018-9251	Not reported
Alpine	libxml2	apk	3.16	`2.9.8-r1`	Not reported	ALPINE-CVE-2018-9251	Not reported
Alpine	libxml2	apk	3.17	`2.9.8-r1`	Not reported	ALPINE-CVE-2018-9251	Not reported
Alpine	libxml2	apk	3.18	`2.9.8-r1`	Not reported	ALPINE-CVE-2018-9251	Not reported
Alpine	libxml2	apk	3.19	`2.9.8-r1`	Not reported	ALPINE-CVE-2018-9251	Not reported
Alpine	libxml2	apk	3.20	`2.9.8-r1`	Not reported	ALPINE-CVE-2018-9251	Not reported
Alpine	libxml2	apk	3.21	`2.9.8-r1`	Not reported	ALPINE-CVE-2018-9251	Not reported
Alpine	libxml2	apk	3.22	`2.9.8-r1`	Not reported	ALPINE-CVE-2018-9251	Not reported
Alpine	libxml2	apk	3.23	`2.9.8-r1`	Not reported	ALPINE-CVE-2018-9251	Not reported
Alpine	libxml2	apk	3.24	`2.9.8-r1`	Not reported	ALPINE-CVE-2018-9251	Not reported
Alpine	libxml2	apk	3.5	`2.9.8-r1`	Not reported	ALPINE-CVE-2018-9251	Not reported
Alpine	libxml2	apk	3.6	`2.9.8-r1`	Not reported	ALPINE-CVE-2018-9251	Not reported
Alpine	libxml2	apk	3.7	`2.9.8-r1`	Not reported	ALPINE-CVE-2018-9251	Not reported
Alpine	libxml2	apk	3.8	`2.9.8-r1`	Not reported	ALPINE-CVE-2018-9251	Not reported
Alpine	libxml2	apk	3.9	`2.9.8-r1`	Not reported	ALPINE-CVE-2018-9251	Not reported

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[libxml2]Unknown
Details (4)
- 2.9.14+dfsg-1.3~deb12u6 · amd64 · bookworm
  Not affected
  dsa · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u6 · arm64 · bookworm
  Not affected
  dsa · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u4 · amd64 · bookworm-security
  Not affected
  dsa · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u4 · arm64 · bookworm-security
  Not affected
  dsa · libxml2 · debian · bookworm
[libxml2-dev]Unknown
Source package: [libxml2]
Details (4)
- 2.9.14+dfsg-1.3~deb12u6 · amd64 · bookworm
  Not affected
  dsa · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u6 · arm64 · bookworm
  Not affected
  dsa · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u4 · amd64 · bookworm-security
  Not affected
  dsa · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u4 · arm64 · bookworm-security
  Not affected
  dsa · libxml2 · debian · bookworm
[libxml2-doc]Unknown
Source package: [libxml2]
Details (4)
- 2.9.14+dfsg-1.3~deb12u6 · all · bookworm
  Not affected
  dsa · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u6 · all · bookworm
  Not affected
  dsa · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u4 · all · bookworm-security
  Not affected
  dsa · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u4 · all · bookworm-security
  Not affected
  dsa · libxml2 · debian · bookworm
[libxml2-utils]Unknown
Source package: [libxml2]
Details (4)
- 2.9.14+dfsg-1.3~deb12u6 · amd64 · bookworm
  Not affected
  dsa · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u6 · arm64 · bookworm
  Not affected
  dsa · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u4 · amd64 · bookworm-security
  Not affected
  dsa · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u4 · arm64 · bookworm-security
  Not affected
  dsa · libxml2 · debian · bookworm
[python3-libxml2]Unknown
Source package: [libxml2]
Details (4)
- 2.9.14+dfsg-1.3~deb12u6 · amd64 · bookworm
  Not affected
  dsa · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u6 · arm64 · bookworm
  Not affected
  dsa · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u4 · amd64 · bookworm-security
  Not affected
  dsa · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u4 · arm64 · bookworm-security
  Not affected
  dsa · libxml2 · debian · bookworm

Observed: Oct 23, 2026, 5:37:59 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]