Improper resource shutdown or release in Linux kernel - CVE-2026-72038
Published: August 16, 2026
Vulnerability identifier: #VU143561
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-72038
CWE-ID: CWE-404
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper resource shutdown or release in setup_cn23xx_octeon_pf_device() in drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c when handling a PF number lookup failure during device initialization. A local user can trigger the affected initialization path to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-72038
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
External References
- https://git.kernel.org/stable/c/020e52aee732bb08e6b89dd02bbf88895a50fffd
- https://git.kernel.org/stable/c/4140c516473a0e116ab3a73f9320c2aa5800210b
- https://git.kernel.org/stable/c/4a45884566bab4122bbeb8fff7d2d6b5fdbded24
- https://git.kernel.org/stable/c/715cce38424fb2488ef2c5e6e6ffbfe1b74a9e67
- https://git.kernel.org/stable/c/75b924759de9427761115301308c137904aa3f99
- https://git.kernel.org/stable/c/a22103618ee5b6ee884c374351f65fcdff7248f0
- https://git.kernel.org/stable/c/b74f293e5f38052cfa14710abfacd6b6561cc2d6
- https://git.kernel.org/stable/c/c63ee62a3c4ac1a1542f4c1a4b87e2f41df5a496