Summary
[1.15.0-7]
- Additional fix to CVE-2025-49176: xorg-x11-server: Integer Overflow in Big Requests Extension
Resolves: RHEL-97294
[1.15.0-6]
- Fix CVE-2025-49175: xorg-x11-server: Out-of-Bounds Read in X Rendering Extension Animated Cursors
Resolves: RHEL-97268
- Fix CVE-2025-49176: xorg-x11-server: Integer Overflow in Big Requests Extension
Resolves: RHEL-97294
- Fix CVE-2025-49178: xorg-x11-server: Unprocessed Client Request Due to Bytes to Ignore
Resolves: RHEL-97364
- Fix CVE-2025-49179: xorg-x11-server: Integer overflow in X Record extension
Resolves: RHEL-97397
- Fix CVE-2025-49180: xorg-x11-server: Integer Overflow in X Resize, Rotate and Reflect (RandR) Extension
Resolves: RHEL-97232
Fixed packages 7
| Release | Package | Fixed in |
|---|---|---|
| Oracle Linux · 8 | tigervnc | 0:1.15.0-7.el8_10 |
| Oracle Linux · 8 | tigervnc-icons | 0:1.15.0-7.el8_10 |
| Oracle Linux · 8 | tigervnc-license | 0:1.15.0-7.el8_10 |
| Oracle Linux · 8 | tigervnc-selinux | 0:1.15.0-7.el8_10 |
| Oracle Linux · 8 | tigervnc-server | 0:1.15.0-7.el8_10 |
| Oracle Linux · 8 | tigervnc-server-minimal | 0:1.15.0-7.el8_10 |
| Oracle Linux · 8 | tigervnc-server-module | 0:1.15.0-7.el8_10 |
Vulnerabilities 5
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High 7.8
Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in x resize, rotate and reflect (randr) extension
A flaw was found in the RandR extension, where the RRChangeProviderProperty function does not properly validate input. This issue leads to an integer overflow when computing the total size to allocate.
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High 7.3
Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in big requests extension
A flaw was found in the Big Requests extension. The request length is multiplied by 4 before checking against the maximum allowed size, potentially causing an integer overflow and bypassing the size check.
-
High 7.3
Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: integer overflow in x record extension
A flaw was found in the X Record extension. The RecordSanityCheckRegisterClients function does not check for an integer overflow when computing request length, which allows a client to bypass length checks.
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Medium 6.1
Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: out-of-bounds read in x rendering extension animated cursors
A flaw was found in the X Rendering extension's handling of animated cursors. If a client provides no cursors, the server assumes at least one is present, leading to an out-of-bounds read and potential crash.
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Medium 5.5
Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: unprocessed client request due to bytes to ignore
A flaw was found in the X server's request handling. Non-zero 'bytes to ignore' in a client's request can cause the server to skip processing another client's request, potentially leading to a denial of service.