An 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 bytes), leading to DoS or remote code execution.
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "2:1.6.2-1ubuntu2.1", "binary_name": "libx11-6" }, { "binary_version": "2:1.6.2-1ubuntu2.1", "binary_name": "libx11-6-dbg" }, { "binary_version": "2:1.6.2-1ubuntu2.1", "binary_name": "libx11-6-dbgsym" }, { "binary_version": "2:1.6.2-1ubuntu2.1", "binary_name": "libx11-6-udeb" }, { "binary_version": "2:1.6.2-1ubuntu2.1", "binary_name": "libx11-6-udeb-dbgsym" }, { "binary_version": "2:1.6.2-1ubuntu2.1", "binary_name": "libx11-data" }, { "binary_version": "2:1.6.2-1ubuntu2.1", "binary_name": "libx11-dev" }, { "binary_version": "2:1.6.2-1ubuntu2.1", "binary_name": "libx11-dev-dbgsym" }, { "binary_version": "2:1.6.2-1ubuntu2.1", "binary_name": "libx11-doc" }, { "binary_version": "2:1.6.2-1ubuntu2.1", "binary_name": "libx11-xcb-dev" }, { "binary_version": "2:1.6.2-1ubuntu2.1", "binary_name": "libx11-xcb-dev-dbgsym" }, { "binary_version": "2:1.6.2-1ubuntu2.1", "binary_name": "libx11-xcb1" }, { "binary_version": "2:1.6.2-1ubuntu2.1", "binary_name": "libx11-xcb1-dbg" }, { "binary_version": "2:1.6.2-1ubuntu2.1", "binary_name": "libx11-xcb1-dbgsym" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "2:1.6.3-1ubuntu2.1", "binary_name": "libx11-6" }, { "binary_version": "2:1.6.3-1ubuntu2.1", "binary_name": "libx11-6-dbg" }, { "binary_version": "2:1.6.3-1ubuntu2.1", "binary_name": "libx11-6-dbgsym" }, { "binary_version": "2:1.6.3-1ubuntu2.1", "binary_name": "libx11-6-udeb" }, { "binary_version": "2:1.6.3-1ubuntu2.1", "binary_name": "libx11-6-udeb-dbgsym" }, { "binary_version": "2:1.6.3-1ubuntu2.1", "binary_name": "libx11-data" }, { "binary_version": "2:1.6.3-1ubuntu2.1", "binary_name": "libx11-dev" }, { "binary_version": "2:1.6.3-1ubuntu2.1", "binary_name": "libx11-dev-dbgsym" }, { "binary_version": "2:1.6.3-1ubuntu2.1", "binary_name": "libx11-doc" }, { "binary_version": "2:1.6.3-1ubuntu2.1", "binary_name": "libx11-xcb-dev" }, { "binary_version": "2:1.6.3-1ubuntu2.1", "binary_name": "libx11-xcb-dev-dbgsym" }, { "binary_version": "2:1.6.3-1ubuntu2.1", "binary_name": "libx11-xcb1" }, { "binary_version": "2:1.6.3-1ubuntu2.1", "binary_name": "libx11-xcb1-dbg" }, { "binary_version": "2:1.6.3-1ubuntu2.1", "binary_name": "libx11-xcb1-dbgsym" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "2:1.6.4-3ubuntu0.1", "binary_name": "libx11-6" }, { "binary_version": "2:1.6.4-3ubuntu0.1", "binary_name": "libx11-6-dbgsym" }, { "binary_version": "2:1.6.4-3ubuntu0.1", "binary_name": "libx11-6-udeb" }, { "binary_version": "2:1.6.4-3ubuntu0.1", "binary_name": "libx11-data" }, { "binary_version": "2:1.6.4-3ubuntu0.1", "binary_name": "libx11-dev" }, { "binary_version": "2:1.6.4-3ubuntu0.1", "binary_name": "libx11-doc" }, { "binary_version": "2:1.6.4-3ubuntu0.1", "binary_name": "libx11-xcb-dev" }, { "binary_version": "2:1.6.4-3ubuntu0.1", "binary_name": "libx11-xcb1" }, { "binary_version": "2:1.6.4-3ubuntu0.1", "binary_name": "libx11-xcb1-dbgsym" } ] }