CVE-2026-74370

high

Description

In the Linux kernel, the following vulnerability has been resolved: liveupdate: fix TOCTOU race in luo_session_retrieve() Extend the scope of the rwsem_read lock in luo_session_retrieve() to overlap with the acquisition of the session mutex. This prevents a concurrent thread from releasing and freeing the session between the lookup and the mutex lock.

References

https://git.kernel.org/stable/c/d944170607b872a1f93713c555ad3f0efde3a9b8

https://git.kernel.org/stable/c/d3ae9e7fddb4036f50003d7fa1ef52801fdb961b

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-59517

Details

Source: Mitre, NVD

Published: 2026-08-15

Updated: 2026-08-17

Risk Information

CVSS v2

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 8.4

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.00198