Summary
[1.20.11-34.2]
- Other security related fixes
Resolves: https://redhat.atlassian.net/browse/RHEL-184288
[1.20.11-34.1]
- CVE fix for: CVE-2026-50256, CVE-2026-50257, CVE-2026-50258,
CVE-2026-50259, CVE-2026-50260, CVE-2026-50261,
CVE-2026-50262, CVE-2026-50263, CVE-2026-50264
Resolves: https://redhat.atlassian.net/browse/RHEL-182435
[1.20.11-34]
- CVE fix for: CVE-2026-33999, CVE-2026-34000, CVE-2026-34001
CVE-2026-34002, CVE-2026-34003
Resolves: https://redhat.atlassian.net/browse/RHEL-163226
Resolves: https://redhat.atlassian.net/browse/RHEL-163308
Resolves: https://redhat.atlassian.net/browse/RHEL-163239
Fixed packages 8
| Release | Package | Fixed in |
|---|---|---|
| Oracle Linux · 9 | xorg-x11-server-common | 0:1.20.11-34.el9_8.2 |
| Oracle Linux · 9 | xorg-x11-server-devel | 0:1.20.11-34.el9_8.2 |
| Oracle Linux · 9 | xorg-x11-server-source | 0:1.20.11-34.el9_8.2 |
| Oracle Linux · 9 | xorg-x11-server-Xdmx | 0:1.20.11-34.el9_8.2 |
| Oracle Linux · 9 | xorg-x11-server-Xephyr | 0:1.20.11-34.el9_8.2 |
| Oracle Linux · 9 | xorg-x11-server-Xnest | 0:1.20.11-34.el9_8.2 |
| Oracle Linux · 9 | xorg-x11-server-Xorg | 0:1.20.11-34.el9_8.2 |
| Oracle Linux · 9 | xorg-x11-server-Xvfb | 0:1.20.11-34.el9_8.2 |
Vulnerabilities 3
-
High 7.8
Xorg: xwayland: x.org x server: denial of service via integer underflow in xkb compatibility map handling
A flaw was found in the X.Org X server. This integer underflow vulnerability, specifically in the XKB compatibility map handling, allows an attacker with local or remote X11 server access to trigger a buffer read overrun. This can lead to memory-safety violat…
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High 7.8
Xorg: xwayland: x.org x server: use-after-free vulnerability leads to server crash and potential memory corruption
A flaw was found in the X.Org X server. This use-after-free vulnerability occurs in the XSYNC fence triggering logic, specifically within the miSyncTriggerFence() function. An attacker with access to the X11 server can exploit this without user interaction, l…
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High 7.8
Xorg: xwayland: x.org x server: information exposure and denial of service via out-of-bounds memory access
A flaw was found in the X.Org X server's XKB key types request validation. A local attacker could send a specially crafted request to the X server, leading to an out-of-bounds memory access vulnerability. This could result in the disclosure of sensitive infor…