A use after free caused by missing lifecycle management of gesture sprites in GestureBuildSprite() in X.Org X Server before 21.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to crash the X server or potentially execute code.
Vendor
x.org vulnerabilities
207 published CVES affecting x.org, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).
- Total
- 207
- Critical
- 29
- High
- 108
- Medium
- 63
- Low
- 7
- Unscored
- 0
- CISA KEV
- 0
Products
- x server 98
- xwayland 47
- libX11 19
- x11 18
- libxi 14
- xorg-x11-server 12
- x11r6 8
- x.org 7
- libXpm 6
- xserver 6
- xfree86 5
- libxfont 4
- xorg-server 4
- libXfont2 3
- libXrender 3
- libXtst 3
- Server 3
- libxrandr 2
- libxv 2
- x font server 2
- x window system 2
- x11r7 2
- xdm 2
- emu-linux-x87-xlibs 1
- evi 1
- libxdmcp 1
- libxfixes 1
- libxvmc 1
- mit-shm 1
- tog-cup 1
Latest x.org CVEs
Newest publication first · page 1 of 9
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MediumCVSS 5.3 EPSS 0.17%
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MediumCVSS 6.9 EPSS 0.18%
A buffer overread in CheckKeySyms() in X.Org X Server before 21.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to leak small amounts of information from X server memory or potentially crash the X server.
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HighCVSS 7.8 EPSS 0.20%
A heap buffer overflow caused by a XIPassiveUngrabDevice request with an out-of-range modifier value in X.Org X Server before 21.1.15 and XWayland before 24.1.14 could be used by authenticated X clients to crash or potentially execute code in X server context.
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HighCVSS 7.8 EPSS 0.20%
A heap buffer overflow caused by mismatched size usage in CopyArea CPU-to-FBO path in X.Org X Server before 21.1.15 and XWayland before 24.1.14 could be used by authenticated X clients to crash or potentially execute code in the X server context.
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HighCVSS 7.8 EPSS 0.20%
A buffer overflow in RandR ChangeProviderProperty requests in X.Org X Server before 2.1.25 and XWayland before 24.4.14 could be used by authenticated X clients to crash or execute code within the X server context.
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HighCVSS 7.8 EPSS 0.20%
A heap buffer overflow caused by mismatching size calculations between XkbAllocNames and ChangeKeycodeRange in X.org X server before 2.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to crash or potentially execute code in X server context.
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HighCVSS 7.8 EPSS 0.20%
A buffer overflow when handling pointer barriers in the XFIXES extension in X.Org X server before 21.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to crash or potentially execute code in X server context.
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HighCVSS 7.8 EPSS 0.20%
An integer truncation issue in XkbResizeKeyType() that could lead to a heap buffer overflow by authenticated X clients in X.org X server before 21.1.25 and XWayland before 24.1.14 could be exploited for crashes or potential code execution in the X server.
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HighCVSS 8.5 EPSS 0.19%
A heap buffer overflow in handling GLX RenderLarge request where dataBytes exceeds cmdlen in X.org X server before 21.1.25 and XWayland before 24.1.14 that could be be triggered by an authenticated X client could cause crashes or code execution in X server context.
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MediumCVSS 5.5 EPSS 0.19%
A use-after-free caused by lack of lifecycle management when adding / removing XInput master devices in X.org X Server before 21.1.25 and XWayland before 24.1.14 could be used by authenticated X Clients to crash the X server or potentially execute code in X server context.
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MediumCVSS 6.8 EPSS 0.19%
A use-after-free in present_clear_window_notifies() in the X.org X Server before 21.1.25 and X Wayland before 24.1.14 could be used by malicious X clients to crash or potentially execute code in the X server context.
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HighCVSS 7.8 EPSS 0.19%
A double free in XKB SetGeometryin X.Org X Server before 21.1.25 and X Wayland before 24.1.14 could be used by attached clients to cause a crash or potentially code in the x server context.
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HighCVSS 7.5 EPSS 0.26%
A malicious X server could cause a heap overflow by injecting a large DEVICE_ENABLE reply when processed by libXi before 1.8.4.
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MediumCVSS 6.5 EPSS 0.27%
A malicious X server could send malformed RECORD EnableContext reolies that can cause a X client using the parse_reply_call_callback function in libXtst before 1.2.6 to enter a endless loop.
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HighCVSS 7.5 EPSS 0.26%
A buffer overflow when handling DEVICE_RESOLUTION in libXi before 1.8.4 could overflow a heap, triggered by a malicious X server.
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MediumCVSS 5.5 EPSS 0.13%
A denial of service via unsigned underflow in libXpm's write path in libXpm before 3.5.19 could be used by local attackers to cause unbounded CPU usage and memory exhaustion.
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HighCVSS 7.1 EPSS 0.20%
An out-of-bounds read in libXtst's RECORD reply parser in libXtst before 1.2.6 could be used by malicious X servers to crash attached X clients.
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MediumCVSS 5.1 EPSS 0.15%
An out-of-bounds read in libX11's byte-oriented codeset parser in libX11 before 1.8.14 could be used by malicious X servers to crash attached X clients.
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MediumCVSS 5.5 EPSS 0.13%
An out-of-bounds read vulnerability in libX11's XIM trigger-key registration parser in libX11 before 1.8.14 could be used by malicious X servers to crash attached X clients.
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CVE-2026-94283 Out-of-bounds read vulnerability in libX11's XIM (X Input Method) attribute parser
PublishedMediumCVSS 6.5 EPSS 0.21%An out-of-bounds read vulnerability in libX11's XIM (X Input Method) attribute parser in libX11 before 1.8.14 could be used by malicious X servers to crash attached X clients.
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MediumCVSS 5.6 EPSS 0.13%
An out-of-bounds read in libXi's XI2 enter/leave/focus cookie conversion in libXi before 1.8.4 could be used by malicious X server to crash an attached X client.
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MediumCVSS 6.5 EPSS 0.21%
An out-of-bounds read in libXi's XListInputDevices() class parsing in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.
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MediumCVSS 6.5 EPSS 0.21%
An out-of-bounds read in libXi's XListInputDevices() in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.
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MediumCVSS 6.5 EPSS 0.26%
An out-of-bounds read in libXi's XI2 XIQueryDevice reply parsing in libXi before 1.8.4 can be used by a malicious X server to crash an attached X client.
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HighCVSS 7.4 EPSS 0.26%
An out-of-bounds read in libXi's XI2 class parser in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.
Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.