SB20261022100 - Use-after-free in Linux kernel rds
Published: October 22, 2026
Security Bulletin ID
SB20261022100
CSH 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 vulnerability.
1) Use-after-free (CVE-ID: CVE-2026-98524)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to escalate privileges on the affected system.
The vulnerability exists due to use-after-free in the Linux kernel RDS InfiniBand memory-region handling code when a failed mapping or registration leaves a freed scatterlist referenced by a pooled memory region. A local user can trigger this failure condition and subsequent memory-region teardown to access freed memory, potentially escalating privileges.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/1be3211e6ac77adbb1eac01314d989d243b32c59
- https://git.kernel.org/stable/c/4468df5bcdef959fd96494e9968f323561a45f4c
- https://git.kernel.org/stable/c/49ba5ed0129906e0362c2e4b5e21c89b2a41e115
- https://git.kernel.org/stable/c/58eb1b3325edac42dc6df72c80962bd53a3c8ca7
- https://git.kernel.org/stable/c/8dca3c81344532a7f05edb3d12f31f3009410a90
- https://git.kernel.org/stable/c/b36d32f30c3f1e58e3a5ae79d0f52836a316b36e
- https://git.kernel.org/stable/c/c42d316163f89cd23de2f3e24558177a8c29bad8
- https://git.kernel.org/stable/c/e2ee0616260080376123997488b5cf8a3870b8d9