SB2025091975 - Use-after-free in Linux kernel crypto
Published: September 19, 2025 Updated: September 22, 2025
Security Bulletin ID
SB2025091975
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2023-53373)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the seqiv_aead_encrypt_complete2() function in crypto/seqiv.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/1effbddaff60eeef8017c6dea1ee0ed970164d14
- https://git.kernel.org/stable/c/32e62025e5e52fbe4812ef044759de7010b15dbc
- https://git.kernel.org/stable/c/36ec108b7bd7e280edb22de028467bd09d644620
- https://git.kernel.org/stable/c/4d497e8b200a175094e0ac252ed878add39b8771
- https://git.kernel.org/stable/c/63551e4b7cbcd9914258827699eb2cb6ed6e4a16
- https://git.kernel.org/stable/c/9477db935eb690f697d9bcc4f608927841bc8b36
- https://git.kernel.org/stable/c/ae849d2f48019ff9c104e32bf588ccbfb200e971
- https://git.kernel.org/stable/c/cc4d0d4251748a8a68026938f4055d2ac47c5719
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.308