Summary
[1.8.0-33.0.11]
- Fix CVE-2026-33999, CVE-2026-34000, CVE-2026-34001, CVE-2026-34002,
CVE-2026-34003 and CVE-2026-34352 [Orabug: 39478221]
[1.8.0-33.0.9]
- Fix CVE-2025-62229: xorg-x11-server: Use-after-free in XPresentNotify structures creation [Orabug: 38694278]
- Fix CVE-2025-62230: xorg-x11-server: Use-after-free in Xkb client resource removal
- Fix CVE-2025-62231: xorg-x11-server: Value overflow in Xkb extension XkbSetCompatMap()
[1.8.0-33.0.7]
- Fix CVE-2025-49175, CVE-2025-49176, CVE-2025-49178, CVE-2025-49179, CVE-2025-49180 [Orabug: 38157695]
[1.8.0-33.0.5]
- Fix CVE-2025-26594 xorg-x11-server Use-after-free of the root cursor [Orabug: 37712725]
- Fix CVE-2025-26595 xorg-x11-server Buffer overflow in XkbVModMaskText()
- Fix CVE-2025-26596 xorg-x11-server Heap overflow in XkbWriteKeySyms()
- Fix CVE-2025-26597 xorg-x11-server Buffer overflow in XkbChangeTypesOfKey()
- Fix CVE-2025-26598 xorg-x11-server Out-of-bounds write in CreatePointerBarrierClient()
- Fix CVE-2025-26599 xorg-x11-server Use of uninitialized pointer in compRedirectWindow()
- Fix CVE-2025-26600 xorg-x11-server Use-after-free in PlayReleasedEvents()
- Fix CVE-2025-26601 xorg-x11-server Use-after-free in SyncInitTrigger()
Fixed packages 7
| Release | Package | Fixed in |
|---|---|---|
| Oracle Linux · 7 | tigervnc | 0:1.8.0-33.0.11.el7_9 |
| Oracle Linux · 7 | tigervnc-icons | 0:1.8.0-33.0.11.el7_9 |
| Oracle Linux · 7 | tigervnc-license | 0:1.8.0-33.0.11.el7_9 |
| Oracle Linux · 7 | tigervnc-server | 0:1.8.0-33.0.11.el7_9 |
| Oracle Linux · 7 | tigervnc-server-applet | 0:1.8.0-33.0.11.el7_9 |
| Oracle Linux · 7 | tigervnc-server-minimal | 0:1.8.0-33.0.11.el7_9 |
| Oracle Linux · 7 | tigervnc-server-module | 0:1.8.0-33.0.11.el7_9 |
Vulnerabilities 6
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High 8.5
In TigerVNC before 1.16.2, Image.cxx in x0vncserver allows other users to observe or manipulate the screen contents, or…
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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…
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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…
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Medium 6.1
Xorg: xwayland: x.org x server: information disclosure or denial of service via out-of-bounds read in xkb modifier map handling
A flaw was found in the X.Org X server. This vulnerability, an out-of-bounds read, affects the XKB (X Keyboard Extension) modifier map handling. An attacker with access to the X11 server can exploit this by sending a malformed request, which causes the server…