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Fencer Vulns
medium 6.5

CVE-2018-19876 json

cairo 1.16.0, in `cairo_ft_apply_variations()` in cairo-ft-font.c, would free memory using a free...

published 2018-12-05 7 y ago modified 2026-10-15 24 d ago also EUVD-2018-11550 , JLSEC-2025-14

cvss
6.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.7%
EPSS 1.7% chance of exploitation in 30 days, percentile 77%
public exploits
0
none known

Summary

cairo 1.16.0, in cairo_ft_apply_variations() in cairo-ft-font.c, would free memory using a free function incompatible with WebKit's fastMalloc, leading to an application crash with a "free(): invalid pointer" error.

Patch / fix

  • julia Cairo_jll 1.18.0+0
  • cairo Debian 14, Debian 13, Debian 12 1.16.0-4

debian advisories DEBIAN-CVE-2018-19876

  • cairo Alpine 3.24, Alpine 3.23, Alpine 3.22 +13 more 1.16.0-r1

alpine advisories ALPINE-CVE-2018-19876

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • cairo Arch Linux 1.16.0-2
  • lib32-cairo Arch Linux 1.16.0-2

arch linux advisories AVG-826AVG-827

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-19876 updated cvss 5.9

cairo: Invalid free in cairo_ft_apply_variations() resulting in a denial of service

  • Red Hat Enterprise Linux 8 cairo, cairo-gobject
    affected: no fix available “Fix deferred”
  • Red Hat Enterprise Linux 5 cairo Red Hat Enterprise Linux 6 cairo Red Hat Enterprise Linux 7 cairo, cairo-tools, cairo-gobject
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
24 d ago

Exploit prediction

1.71% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P
OSV 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
julia Cairo_jll
>=1.16.0+0, <1.18.0+0
1.18.0+0

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.