CVE-2026-72106: dm-ioctl: fix a possible overflow in list_version_get_info

Severity: unknown
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-15 · updated 2026-10-30

Description

In the Linux kernel, the following vulnerability has been resolved: dm-ioctl: fix a possible overflow in list_version_get_info sizeof(tt->version) is 12 bytes, but the code writes 16 bytes into the output buffer - info->vers->version[0], info->vers->version[1], info->vers->version[2] and info->vers->next. This can cause buffer overflow. Fix this buffer overflow by replacing "sizeof(tt->version)" with "sizeof(struct dm_target_versions)".

Affected products

Linux: 2.6.12 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux 7.2. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/29536a9ff146d9bbd618959857ed2e691cda1d21
https://git.kernel.org/stable/c/3cba74d3fb2c1890ffae019301227d1366f74907
https://git.kernel.org/stable/c/76c6f845dc0c614304a6e6ee619b552f97cf24b3
https://git.kernel.org/stable/c/d61c12573ed9768690fdcb2bc38846a1bcb01358
https://git.kernel.org/stable/c/df50c24c6447c18886ed126d3d81cc7e155ea8b6
https://git.kernel.org/stable/c/e0f5842c4e2a7dbefb52a2dc6711789bc6963e55

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