Summary
[1.15.0-7.1]
- Fix CVE-2026-33999, CVE-2026-34000, CVE-2026-34001, CVE-2026-34002,
CVE-2026-34003 xorg-x11-server: various XKB and XSYNC vulnerabilities
Resolves: RHEL-163213
Resolves: RHEL-163281
Resolves: RHEL-163267
- Fix CVE-2026-34352
Resolves: RHEL-167986
[1.15.0-7]
- Fix CVE-2025-62229: xorg-x11-server: Use-after-free in XPresentNotify structures creation
Resolves: RHEL-119989
- Fix CVE-2025-62230: xorg-x11-server: Use-after-free in Xkb client resource removal
Resolves: RHEL-120009
- Fix CVE-2025-62231: xorg-x11-server: Value overflow in Xkb extension XkbSetCompatMap()
Resolves: RHEL-120770
Fixed packages 7
| Release | Package | Fixed in |
|---|---|---|
| Oracle Linux · 9 | tigervnc | 0:1.15.0-7.el9_8.1 |
| Oracle Linux · 9 | tigervnc-icons | 0:1.15.0-7.el9_8.1 |
| Oracle Linux · 9 | tigervnc-license | 0:1.15.0-7.el9_8.1 |
| Oracle Linux · 9 | tigervnc-selinux | 0:1.15.0-7.el9_8.1 |
| Oracle Linux · 9 | tigervnc-server | 0:1.15.0-7.el9_8.1 |
| Oracle Linux · 9 | tigervnc-server-minimal | 0:1.15.0-7.el9_8.1 |
| Oracle Linux · 9 | tigervnc-server-module | 0:1.15.0-7.el9_8.1 |
Vulnerabilities 5
-
High 8.5
In TigerVNC before 1.16.2, Image.cxx in x0vncserver allows other users to observe or manipulate the screen contents, or…
-
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…
-
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…
-
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…
-
Medium 6.1
Xwayland: xorg: x.org x server: information disclosure and denial of service via out-of-bounds read in xkb geometry processing.
A flaw was found in the X.Org X server. This out-of-bounds read vulnerability in the XKB geometry processing, specifically within the `CheckSetGeom()` and `XkbAddGeomKeyAlias` functions, allows an attacker to read uninitialized or out-of-bounds memory. An att…