X.org Libx11 vulnerabilities

• the x11 project libx11 Out-of-bounds read in libX11's byte-oriented codeset parser CVE-2026-94285 Fix available 5.1 MediumSeptember 28, 2026
• the x11 project libx11 Out-of-bounds read vulnerability in libX11's XIM trigger-keyregistration parser.registration parser CVE-2026-94284 Fix available 5.5 MediumSeptember 28, 2026
• the x11 project libx11 Out-of-bounds read vulnerability in libX11's XIM (X Input Method) attribute parser CVE-2026-94283 Fix available 6.5 MediumSeptember 28, 2026
• the x11 project libx11 libX11 XkbGetMap Reply Heap-based Buffer Overflow CVE-2026-88806 Fix available 7.5 HighSeptember 21, 2026
• x.org libx11, fedoraproject fedora, red hat enterprise linux 6 +4 more +6 more Libx11: integer overflow in xcreateimage() leading to a heap overflow CVE-2023-43787 Fix available 7.8 HighOctober 3, 2023
• x.org libx11, fedoraproject fedora, red hat enterprise linux 6 +4 more +6 more Libx11: stack exhaustion from infinite recursion in putsubimage() CVE-2023-43786 Public exploitFix available 5.5 MediumOctober 3, 2023
• x.org libx11, fedoraproject fedora, red hat enterprise linux 6 +4 more +6 more Libx11: out-of-bounds memory access in _xkbreadkeysyms() CVE-2023-43785 Fix available 6.5 MediumOctober 3, 2023
• the x11 project libx11, redhat enterprise linux +1 more A vulnerability was found in libX11. The security flaw occurs because the functions in src... CVE-2023-3138 Fix available 7.5 HighJune 15, 2023
• x.org libx11, fedoraproject fedora, x.org x window system +2 more LookupCol.c in X.Org X through X11R7.7 and libX11 before 1.7.1 might allow remote attackers to... CVE-2021-31535 Fix available EPSS 10.4% 9.8 CriticalMay 18, 2021
• the x11 project libx11, fedoraproject fedora +1 more An integer overflow vulnerability leading to a double-free was found in libX11. This flaw allows... CVE-2020-14363 Fix available 7.8 HighAugust 25, 2020
• the x11 project libx11, canonical ubuntu linux, fedoraproject fedora +1 more +3 more An integer overflow leading to a heap-buffer overflow was found in The X Input Method (XIM)... CVE-2020-14344 Fix available 6.7 MediumAugust 4, 2020
• x.org libx11, canonical ubuntu linux, debian linux +2 more An issue was discovered in libX11 through 1.6.5. The function XListExtensions in ListExt.c... CVE-2018-14600 Fix available 9.8 CriticalAugust 24, 2018
• x.org libx11, canonical ubuntu linux, debian linux +4 more +6 more An issue was discovered in libX11 through 1.6.5. The function XListExtensions in ListExt.c is... CVE-2018-14599 Fix available 9.8 CriticalAugust 24, 2018
• x.org libx11, canonical ubuntu linux, debian linux +1 more +3 more An issue was discovered in XListExtensions in ListExt.c in libX11 through 1.6.5. A malicious... CVE-2018-14598 Fix available 7.5 HighAugust 24, 2018
• x.org libx11, fedoraproject fedora +1 more The XListFonts function in X.org libX11 before 1.6.4 might allow remote X servers to gain... CVE-2016-7943 Fix available 9.8 CriticalOctober 27, 2016
• x.org libx11, fedoraproject fedora +1 more The XGetImage function in X.org libX11 before 1.6.4 might allow remote X servers to gain... CVE-2016-7942 Fix available 9.8 CriticalOctober 12, 2016
• x.org libx11, x11, canonical ubuntu linux +1 more +3 more Multiple off-by-one errors in the (1) MakeBigReq and (2) SetReqLen macros in include/X11/Xlibint... CVE-2013-7439 Fix available 7.5 HighApril 9, 2015
• x.org libx11, canonical ubuntu linux, debian linux +2 more Multiple integer overflows in (1) the XGetPixel function in ImUtil.c in X.Org libx11 before 1.0.3... CVE-2007-1667 Fix available 9.3 HighMarch 24, 2007
• x.org libx11 The Xinput module (modules/im/ximcp/imLcIm.c) in X.Org libX11 1.0.2 and 1.0.3 opens a file for... CVE-2006-5397 Fix available 2.1 LowNovember 3, 2006