Description
A flaw was found in xorg-x11-server in versions before 1.20.11. An integer underflow can occur in xserver which can lead to a local privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a xorg-x11-server
xorg-x11-server 1.20.11affected
References
- http://www.openwall.com/lists/oss-security/2021/04/13/1 ↗
- https://lists.debian.org/debian-lts-announce/2021/04/msg00013.html ↗
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MO6S5OPXUDYBSRSVWVLFLJ6AFERG4HNY/ ↗
- https://www.debian.org/security/2021/dsa-4893 ↗
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PEXPCLMVU25AUZTUXC4MYBGPKOAIM5TW/ ↗
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MDF7TAJE7NPZPNVOXSD5HBIFLNPUOD2V/ ↗
- https://www.zerodayinitiative.com/advisories/ZDI-21-463/ ↗
- https://lists.x.org/archives/xorg-announce/2021-April/003080.html ↗
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N63KL3T22HNFT4FJ7VMVF6U5Q4RFJIQF/ ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=1944167 ↗
- https://seclists.org/oss-sec/2021/q2/20 ↗
- https://www.tenable.com/plugins/nessus/148701 ↗
- https://gitlab.freedesktop.org/xorg/xserver/-/commit/7aaf54a1884f71dc363f0b884e57bcb67407a6cd ↗
- https://security.gentoo.org/glsa/202104-02 ↗