Xlib (libx11)

This hub aggregates every CVE we track for Xlib (libx11), a product in the operating systems space. Use it to gauge the current risk picture and drill into individual advisories.

Severity distribution

Monthly trend

The 10 most recently published vulnerabilities affecting Xlib (libx11).

• CVE-2023-43787Libx11: integer overflow in xcreateimage() leading to a heap overflow7.8Oct 10, 2023
• CVE-2023-43786Libx11: stack exhaustion from infinite recursion in putsubimage()5.5Oct 10, 2023
• CVE-2023-43785Libx11: out-of-bounds memory access in _xkbreadkeysyms()6.5Oct 10, 2023
• CVE-2023-3138A vulnerability was found in libX11. The security flaw occurs because the functions in src/InitExt.c in libX11 do not check that the values provided for the Request, Event, or Error IDs are within ...7.5Jun 28, 2023
• CVE-2021-31535LookupCol.c in X.Org X through X11R7.7 and libX11 before 1.7.1 might allow remote attackers to execute arbitrary code. The libX11 XLookupColor request (intended for server-side color lookup) contai...9.8May 27, 2021
• CVE-2020-14363An integer overflow vulnerability leading to a double-free was found in libX11. This flaw allows a local privileged attacker to cause an application compiled with libX11 to crash, or in some cases,...7.8Sep 11, 2020
• CVE-2020-14344An integer overflow leading to a heap-buffer overflow was found in The X Input Method (XIM) client was implemented in libX11 before version 1.6.10. As per upstream this is security relevant when se...6.7Aug 5, 2020
• CVE-2018-14600An issue was discovered in libX11 through 1.6.5. The function XListExtensions in ListExt.c interprets a variable as signed instead of unsigned, resulting in an out-of-bounds write (of up to 128 byt...9.8Aug 24, 2018
• CVE-2018-14599An issue was discovered in libX11 through 1.6.5. The function XListExtensions in ListExt.c is vulnerable to an off-by-one error caused by malicious server responses, leading to DoS or possibly unsp...9.8Aug 24, 2018
• CVE-2018-14598An issue was discovered in XListExtensions in ListExt.c in libX11 through 1.6.5. A malicious server can send a reply in which the first string overflows, causing a variable to be set to NULL that w...7.5Aug 24, 2018