CVE-2026-93073

CVE CVE-2026-93073EUVD EUVD-2026-82183Published 2026-09-17T16:10:56.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: dax: read holder_ops once in dax_holder_notify_failure() dax_holder_notify_failure() reads dax_dev->holder_ops twice without READ_ONCE() -- once for the NULL check and once for the indirect notify_failure() call. A concurrent fs_put_dax() can clear holder_ops between the two reads, so the check can observe a non-NULL pointer while the call dereferences NULL. (kill_dax() also clears holder_ops, but only after synchronize_srcu(), so it cannot race a reader that is inside dax_read_lock(); fs_put_dax() does no such synchronization.) Fetch holder_ops once into a local with READ_ONCE() so the NULL check and the indirect call observe the same value.

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: 7.2.6; patch: 7.3-rc1; 8012b866085523758780850087102421dbcce522 <6a37acecc7c29136235cbc446a1b89e81414344b; 8012b866085523758780850087102421dbcce522 <ee1251621d1c7cf3155c6704542cbb358d799968; patch: 6.1.188; 8012b866085523758780850087102421dbcce522 <0a42180d5410c98829ee72d1d426fb7faf9e6873; patch: 6.12.110; 6.0; 8012b866085523758780850087102421dbcce522 <eb412f80311fc7ab6eb3203091a3fe59a5e9fd30; patch: 0; 8012b866085523758780850087102421dbcce522 <7ae9d15bdcde0f2955ae13b6a95587f9e23b2359; patch: 6.18.52; 8012b866085523758780850087102421dbcce522 <1661b9bf78def01a8c96409569772d9b2592f4ba; patch: 6.6.157

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

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Linux — Linux

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