rpm package
almalinux/tigervnc-selinux
pkg:rpm/almalinux/tigervnc-selinux
Vulnerabilities (51)
| CVE | Sev | CVSS | KEV | Affected versions | Fixed in | Published | Description |
|---|---|---|---|---|---|---|---|
| CVE-2026-50264 | Hig | 7.8 | < 1.15.0-10.el8_10 | 1.15.0-10.el8_10 | Jun 5, 2026 | An out-of-bounds write flaw was found in the X.Org X server and Xwayland in DRIGetBuffers/DRIGetBuffersWithFormat. A client that requests multiple DRI2BufferBackLeft attachments and one DRI2BufferFrontLeft can trigger an out-of-bounds heap write. This may be used to crash the ser | |
| CVE-2026-50263 | Med | 5.5 | < 1.15.0-10.el8_10 | 1.15.0-10.el8_10 | Jun 5, 2026 | A use-after-free flaw was found in the X.Org X server and Xwayland in CreateSaverWindow(). A client can trigger a use-after-free read after changing window attributes and forcing the screen saver, leading to information disclosure. | |
| CVE-2026-50262 | Med | 5.5 | < 1.15.0-10.el8_10 | 1.15.0-10.el8_10 | Jun 5, 2026 | An out-of-bounds read flaw was found in the X.Org X server and Xwayland in __glXDisp_ChangeDrawableAttributes(). A wrong size validation check can read a client-controlled number of bytes, exceeding the request buffer, leading to information disclosure. A write path also exists b | |
| CVE-2026-50261 | Hig | 7.8 | < 1.15.0-10.el8_10 | 1.15.0-10.el8_10 | Jun 5, 2026 | A use-after-free flaw was found in the X.Org X server and Xwayland in SyncChangeCounter(). A client that sets up multiple SyncCounters can trigger a use-after-free when destroying those counters via a second client connection while changing those counters. This may be used to cra | |
| CVE-2026-50260 | Hig | 7.8 | < 1.15.0-10.el8_10 | 1.15.0-10.el8_10 | Jun 5, 2026 | A use-after-free flaw was found in the X.Org X server and Xwayland in FreeCounter(). A client that sets up multiple SyncCounters and awaits on those triggers can trigger a use-after-free when destroying those counters via a second client connection. This may be used to crash the | |
| CVE-2026-50259 | Hig | 7.8 | < 1.15.0-10.el8_10 | 1.15.0-10.el8_10 | Jun 5, 2026 | A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. _XkbSetMapChecks() declares a fixed-size stack buffer mapWidths[256] indexed by key type index. The helper function CheckKeyTypes() writes to this buffer at a client-controlled offset, allowing a sta | |
| CVE-2026-50258 | Hig | 7.8 | < 1.15.0-10.el8_10 | 1.15.0-10.el8_10 | Jun 5, 2026 | A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. The X server has multiple stack buffers sized XkbMaxShiftLevel * XkbNumKbdGroups but CheckKeyTypes() does not verify or clamp non-canonical key types to XkbMaxShiftLevel. A client can change key type | |
| CVE-2026-50257 | Hig | 7.8 | < 1.15.0-10.el8_10 | 1.15.0-10.el8_10 | Jun 5, 2026 | A use-after-free flaw was found in the X.Org X server and Xwayland in miSyncDestroyFence(). A client that sets up multiple fence triggers can trigger a use-after-free function pointer call. An attacker would connect to the X server to set up a fence and await that fence, then a s | |
| CVE-2026-50256 | Hig | 7.8 | < 1.15.0-10.el8_10 | 1.15.0-10.el8_10 | Jun 5, 2026 | A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. A mismatch between the X server and the libXfont2 library's maximum font name length can cause a stack buffer overflow during font alias resolution. The server allocates a 256 byte stack buffer but l | |
| CVE-2026-34000 | Med | 6.1 | < 1.15.0-7.el9_8.1 | 1.15.0-7.el9_8.1 | May 5, 2026 | 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 attacker with a connecti | |
| CVE-2026-34003 | Hig | 7.8 | < 1.15.0-6.el9_7.1 | 1.15.0-6.el9_7.1 | Apr 23, 2026 | 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 information or cause the s | |
| CVE-2026-34001 | Hig | 7.8 | < 1.15.0-6.el9_7.1 | 1.15.0-6.el9_7.1 | Apr 23, 2026 | 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, leading to a server cr | |
| CVE-2026-33999 | Hig | 7.8 | < 1.15.0-6.el9_7.1 | 1.15.0-6.el9_7.1 | Apr 23, 2026 | 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 violations and potentially | |
| CVE-2026-34352 | Hig | 8.5 | < 1.15.0-6.el9_7.1 | 1.15.0-6.el9_7.1 | Mar 26, 2026 | In TigerVNC before 1.16.2, Image.cxx in x0vncserver allows other users to observe or manipulate the screen contents, or cause an application crash, because of incorrect permissions. | |
| CVE-2025-62230 | Hig | 7.3 | < 1.14.1-9.el9_6 | 1.14.1-9.el9_6 | Oct 30, 2025 | A flaw was discovered in the X.Org X server’s X Keyboard (Xkb) extension when handling client resource cleanup. The software frees certain data structures without properly detaching related resources, leading to a use-after-free condition. This can cause memory corruption or a cr | |
| CVE-2025-62229 | Hig | 7.3 | < 1.14.1-9.el9_6 | 1.14.1-9.el9_6 | Oct 30, 2025 | A flaw was found in the X.Org X server and Xwayland when processing X11 Present extension notifications. Improper error handling during notification creation can leave dangling pointers that lead to a use-after-free condition. This can cause memory corruption or a crash, potentia | |
| CVE-2025-62231 | Hig | 7.3 | < 1.14.1-9.el9_6 | 1.14.1-9.el9_6 | Oct 30, 2025 | A flaw was identified in the X.Org X server’s X Keyboard (Xkb) extension where improper bounds checking in the XkbSetCompatMap() function can cause an unsigned short overflow. If an attacker sends specially crafted input data, the value calculation may overflow, leading to memory | |
| CVE-2025-49180 | Hig | 7.8 | < 1.14.1-8.el9_6 | 1.14.1-8.el9_6 | Jun 17, 2025 | 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. | |
| CVE-2025-49179 | Hig | 7.3 | < 1.14.1-8.el9_6 | 1.14.1-8.el9_6 | Jun 17, 2025 | 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. | |
| CVE-2025-49178 | Med | 5.5 | < 1.14.1-8.el9_6 | 1.14.1-8.el9_6 | Jun 17, 2025 | 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. |
- affected < 1.15.0-10.el8_10fixed 1.15.0-10.el8_10
An out-of-bounds write flaw was found in the X.Org X server and Xwayland in DRIGetBuffers/DRIGetBuffersWithFormat. A client that requests multiple DRI2BufferBackLeft attachments and one DRI2BufferFrontLeft can trigger an out-of-bounds heap write. This may be used to crash the ser
- affected < 1.15.0-10.el8_10fixed 1.15.0-10.el8_10
A use-after-free flaw was found in the X.Org X server and Xwayland in CreateSaverWindow(). A client can trigger a use-after-free read after changing window attributes and forcing the screen saver, leading to information disclosure.
- affected < 1.15.0-10.el8_10fixed 1.15.0-10.el8_10
An out-of-bounds read flaw was found in the X.Org X server and Xwayland in __glXDisp_ChangeDrawableAttributes(). A wrong size validation check can read a client-controlled number of bytes, exceeding the request buffer, leading to information disclosure. A write path also exists b
- affected < 1.15.0-10.el8_10fixed 1.15.0-10.el8_10
A use-after-free flaw was found in the X.Org X server and Xwayland in SyncChangeCounter(). A client that sets up multiple SyncCounters can trigger a use-after-free when destroying those counters via a second client connection while changing those counters. This may be used to cra
- affected < 1.15.0-10.el8_10fixed 1.15.0-10.el8_10
A use-after-free flaw was found in the X.Org X server and Xwayland in FreeCounter(). A client that sets up multiple SyncCounters and awaits on those triggers can trigger a use-after-free when destroying those counters via a second client connection. This may be used to crash the
- affected < 1.15.0-10.el8_10fixed 1.15.0-10.el8_10
A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. _XkbSetMapChecks() declares a fixed-size stack buffer mapWidths[256] indexed by key type index. The helper function CheckKeyTypes() writes to this buffer at a client-controlled offset, allowing a sta
- affected < 1.15.0-10.el8_10fixed 1.15.0-10.el8_10
A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. The X server has multiple stack buffers sized XkbMaxShiftLevel * XkbNumKbdGroups but CheckKeyTypes() does not verify or clamp non-canonical key types to XkbMaxShiftLevel. A client can change key type
- affected < 1.15.0-10.el8_10fixed 1.15.0-10.el8_10
A use-after-free flaw was found in the X.Org X server and Xwayland in miSyncDestroyFence(). A client that sets up multiple fence triggers can trigger a use-after-free function pointer call. An attacker would connect to the X server to set up a fence and await that fence, then a s
- affected < 1.15.0-10.el8_10fixed 1.15.0-10.el8_10
A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. A mismatch between the X server and the libXfont2 library's maximum font name length can cause a stack buffer overflow during font alias resolution. The server allocates a 256 byte stack buffer but l
- affected < 1.15.0-7.el9_8.1fixed 1.15.0-7.el9_8.1
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 attacker with a connecti
- affected < 1.15.0-6.el9_7.1fixed 1.15.0-6.el9_7.1
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 information or cause the s
- affected < 1.15.0-6.el9_7.1fixed 1.15.0-6.el9_7.1
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, leading to a server cr
- affected < 1.15.0-6.el9_7.1fixed 1.15.0-6.el9_7.1
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 violations and potentially
- affected < 1.15.0-6.el9_7.1fixed 1.15.0-6.el9_7.1
In TigerVNC before 1.16.2, Image.cxx in x0vncserver allows other users to observe or manipulate the screen contents, or cause an application crash, because of incorrect permissions.
- affected < 1.14.1-9.el9_6fixed 1.14.1-9.el9_6
A flaw was discovered in the X.Org X server’s X Keyboard (Xkb) extension when handling client resource cleanup. The software frees certain data structures without properly detaching related resources, leading to a use-after-free condition. This can cause memory corruption or a cr
- affected < 1.14.1-9.el9_6fixed 1.14.1-9.el9_6
A flaw was found in the X.Org X server and Xwayland when processing X11 Present extension notifications. Improper error handling during notification creation can leave dangling pointers that lead to a use-after-free condition. This can cause memory corruption or a crash, potentia
- affected < 1.14.1-9.el9_6fixed 1.14.1-9.el9_6
A flaw was identified in the X.Org X server’s X Keyboard (Xkb) extension where improper bounds checking in the XkbSetCompatMap() function can cause an unsigned short overflow. If an attacker sends specially crafted input data, the value calculation may overflow, leading to memory
- affected < 1.14.1-8.el9_6fixed 1.14.1-8.el9_6
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.
- affected < 1.14.1-8.el9_6fixed 1.14.1-8.el9_6
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.
- affected < 1.14.1-8.el9_6fixed 1.14.1-8.el9_6
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.
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