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CVE-2024-31083

Status Candidate

Overview

A use-after-free vulnerability was found in the ProcRenderAddGlyphs() function of Xorg servers. This issue occurs when AllocateGlyph() is called to store new glyphs sent by the client to the X server, potentially resulting in multiple entries pointing to the same non-refcounted glyphs. Consequently, ProcRenderAddGlyphs() may free a glyph, leading to a use-after-free scenario when the same glyph pointer is subsequently accessed. This flaw allows an authenticated attacker to execute arbitrary code on the system by sending a specially crafted request.

Related Files

Debian Security Advisory 5657-1
Posted Apr 15, 2024
Authored by Debian | Site debian.org

Debian Linux Security Advisory 5657-1 - Several vulnerabilities were discovered in the Xorg X server, which may result in privilege escalation if the X server is running privileged or denial of service.

tags | advisory, denial of service, vulnerability
systems | linux, debian
advisories | CVE-2024-31080, CVE-2024-31081, CVE-2024-31083
SHA-256 | 28ab9735e5a87ff285676269d50c238ee979e4049765f3ebddfb327aa4a63eef
Ubuntu Security Notice USN-6721-2
Posted Apr 10, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6721-2 - USN-6721-1 fixed vulnerabilities in X.Org X Server. That fix was incomplete resulting in a regression. This update fixes the problem. It was discovered that X.Org X Server incorrectly handled certain data. An attacker could possibly use this issue to expose sensitive information.

tags | advisory, vulnerability
systems | linux, ubuntu
advisories | CVE-2024-31083
SHA-256 | 60cf05697802fbd134a81968130e416ab4b5a454299d94d0c3ea53fba1d98ca8
Ubuntu Security Notice USN-6721-1
Posted Apr 5, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6721-1 - It was discovered that X.Org X Server incorrectly handled certain data. An attacker could possibly use this issue to expose sensitive information. It was discovered that X.Org X Server incorrectly handled certain glyphs. An attacker could possibly use this issue to cause a crash or expose sensitive information.

tags | advisory
systems | linux, ubuntu
advisories | CVE-2024-31080, CVE-2024-31083
SHA-256 | 4882781902435137ae8b1fd009b4c4df6d61f4ae936be03a8ca2819d4d11c896
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