CVE-2026-98972: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: cgroup/cpuset: Don't access cpuset_cgrp_subsys.root in is_in_v2_mode() After seeing the patch [1] to guard is_in_v2_mode() with RCU, it makes me realize that is_in_v2_mode() may be called in a context where a new cgroup filesystem is being rebound with stale cpuset_cgrp_subsys.root pointer. Avoid this potential UaF situation by adding a new cpuset_v2_mode flag which is set when the cpuset_v2_mode mount option is used. This flag is written into only when cpuset_bind() is being called with a stable cpuset_cgrp_subsys.root value. The is_in_v2_mode() helper is modified to read the new cpuset_v2_mode flag instead of accessing cpuset_cgrp_subsys.root directly. [1] https://lore.kernel.org/lkml/[email protected]

Засегнати продукти

• Linux Linux: b8d1b8ee93df8ffbabbeadd65d39853cfad6d698 преди 988bf67a13890a37a33201f95947095ca9bec856; b8d1b8ee93df8ffbabbeadd65d39853cfad6d698 преди e06b678e3b4e12fdaa0b51a7a5a54abc5dbd6469
• Linux Linux: 4.14; преди 4.14; 7.2.11 до 7.2.*; от 7.3 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-98972
• https://nvd.nist.gov/vuln/detail/CVE-2026-98972
• https://git.kernel.org/stable/c/988bf67a13890a37a33201f95947095ca9bec856
• https://git.kernel.org/stable/c/e06b678e3b4e12fdaa0b51a7a5a54abc5dbd6469