CVE-2026-89998high

CVE-2026-89998: high-severity vulnerability in Linux

dm: fix race when loading and unloading a table

Published · Updated

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.8epss 0.2%
exploitation probability
0.2%top 93% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved: dm: fix race when loading and unloading a table If the userspace calls two concurrent table load ioctls and one of them succeeds and the other fails, there is a race condition because dm_setup_md_queue walks &md->table_devices without any lock. If the walk races with dm_table_destroy -> free_devices -> dm_put_table_device, there is access to invalid memory. Fix this race by extending the lock over the list walk.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Linux · Linux
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References
https://git.kernel.org/stable/c/00ad6f9ed27f91925d4d3fb7aab50a60d774f998https://git.kernel.org/stable/c/0ea6e5ad4a5817e91f11b4cc1e022e575ed2e7cahttps://git.kernel.org/stable/c/5380c7f6335cc6d77eb77d065105e81155c4d9d3https://git.kernel.org/stable/c/a1af1884c960b98c621b6fe2fea1216b78c02152https://git.kernel.org/stable/c/af1f32ccf8051f4691ced11feb452b9d13561727https://git.kernel.org/stable/c/b02e35b81176c7d61dd441cc7a2e5c324a82444b