CVE-2026-72015

Summary

In the Linux kernel, the following vulnerability has been resolved:

fs/resctrl: Fix double-add of pseudo-locked region's RMID to free list

A pseudo-locked group's RMID is freed when it is created. On unmount rmdir_all_sub() unconditionally frees all RMID of all groups, resulting in a double-free of the pseudo-locked group's RMID. The consequence of this is that the original free results in the pseudo-locked group's RMID being added to the rmid_free_lru linked list and the second free then attempts to add the same RMID entry to the rmid_free_lru again.

Do not double-free a pseudo-locked group's RMID.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxe0bdfe8e36f3fbbdc91e70bf927f743ca23917b0 < 9168176894332312c12ef052e784735dbf4ffe3faffected
LinuxLinuxe0bdfe8e36f3fbbdc91e70bf927f743ca23917b0 < b2fe9e140aa94b2816aab7ebc692b543e418f5e3affected
LinuxLinuxe0bdfe8e36f3fbbdc91e70bf927f743ca23917b0 < 52007bfdce5310e8c8a29849bfbfb188a1e50ca0affected
LinuxLinuxe0bdfe8e36f3fbbdc91e70bf927f743ca23917b0 < f7628eea9212e185a09df3aea603ca8580b8678daffected
LinuxLinuxe0bdfe8e36f3fbbdc91e70bf927f743ca23917b0 < b9f089723aee892efc77c349ae47a6b452b293c4affected
LinuxLinux4.19affected
LinuxLinux0 < 4.19unaffected
LinuxLinux6.6.148 <= 6.6.*unaffected
LinuxLinux6.12.101 <= 6.12.*unaffected
LinuxLinux6.18.40 <= 6.18.*unaffected
LinuxLinux7.1.5 <= 7.1.*unaffected
LinuxLinux7.2-rc3 <= *unaffected

Weaknesses

References