CVE-2026-72368

CVE CVE-2026-72368EUVD EUVD-2026-59267Published 2026-08-15T05:56:05.000ZLast changed 2026-08-17T05:43:22.000ZCVSS 7.8

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: cachefiles: Fix double unlock in nomem_d_alloc error path When start_creating() fails and returns -ENOMEM, it has already released the parent directory lock in __start_dirop(): static struct dentry *__start_dirop(...) { ... inode_lock_nested(dir, I_MUTEX_PARENT); dentry = lookup_one_qstr_excl(name, parent, lookup_flags); if (IS_ERR(dentry)) inode_unlock(dir); <-- Lock released on error return dentry; } However, the nomem_d_alloc error path in cachefiles_get_directory() unconditionally calls inode_unlock(d_inode(dir)) again, causing a double unlock that corrupts the rwsem state. This is a leftover from commit 7ab96df840e60 which replaced manual locking with start_creating() but failed to update the nomem_d_alloc path (while correctly updating mkdir_error and lookup_error paths).

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

• Linux — Linux patch: 0; patch: 7.2; 6.19; 7ab96df840e60eb933abfe65fc5fe44e72f16dc0 <8c256fba2b46020004201c500b2a1fbc707a33ef; patch: 7.1.5; 7ab96df840e60eb933abfe65fc5fe44e72f16dc0 <26757dac15175f2a42e3537f1ba86e62456d48f1

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

• Linux — Linux

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