CVE-2025-27363

Publication date 11 March 2025

Last updated 19 March 2025

Ubuntu priority

Cvss 3 Severity Score

An out of bounds write exists in FreeType versions 2.13.0 and below (newer versions of FreeType are not vulnerable) when attempting to parse font subglyph structures related to TrueType GX and variable font files. The vulnerable code assigns a signed short value to an unsigned long and then adds a static value causing it to wrap around and allocate too small of a heap buffer. The code then writes up to 6 signed long integers out of bounds relative to this buffer. This may result in arbitrary code execution. This vulnerability may have been exploited in the wild.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
freetype	24.10 oracular	Not affected
	24.04 LTS noble	Not affected
	22.04 LTS jammy	Fixed 2.11.1+dfsg-1ubuntu0.3
	20.04 LTS focal	Fixed 2.10.1-2ubuntu0.4
	18.04 LTS bionic	Fixed 2.8.1-2ubuntu2.2+esm1 Ubuntu Pro
	16.04 LTS xenial	Fixed 2.6.1-0.1ubuntu2.5+esm2 Ubuntu Pro
	14.04 LTS trusty	Not affected

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Notes

mdeslaur

per post on oss-security list: "This commit fixes most of the issue - except "limit" is still signed short - but needs to be redone if you're backporting to 2.10.4"

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
freetype	Upstream: ef63669

Severity score breakdown

Parameter	Value
Base score	8.1 · High
Attack vector	Network
Attack complexity	High
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H