CVE Catalog

CVE-2026-74369

Low risk· EPSS 5%
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.16%

5th percentile - higher than 5% of all known CVEs

Summary

In the Linux kernel, a use-after-free vulnerability in luo_file_unpreserve_files() and luo_file_finish() of the liveupdate mechanism has been fixed. The patch reorders module_put() and xa_erase() to ensure the file handler module remains pinned while its operations are accessed, preventing use of freed memory.

Risk Assessment

The vulnerability could lead to use-after-free, potentially causing system crashes or local privilege escalation.

Recommendation

Update the Linux kernel to a patched version immediately and monitor systems for unusual behavior.

Other vulnerabilities in Linux kernel

See all
Original NVD description (English source)

In the Linux kernel, the following vulnerability has been resolved: liveupdate: fix u-a-f in luo_file_unpreserve_files() and luo_file_finish() In luo_file_unpreserve_files() and luo_file_finish(), reorder module_put() and xa_erase() to ensure the file handler module remains pinned while its operations are being accessed. Specifically, luo_get_id() dereferences fh->ops->get_id, so the module reference must be held until after xa_erase() (which calls luo_get_id) completes. For luo_file_finish(), this requires moving the module_put() call out of the luo_file_finish_one() helper and into the main loop of luo_file_finish() itself.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS