SB20260918209 - Use-after-free in Linux kernel infiniband core driver
Published: September 18, 2026
Security Bulletin ID
SB20260918209
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use-after-free (CVE-ID: CVE-2026-92510)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 0 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to trigger a use-after-free.
The vulnerability exists due to a use-after-free in the SRQ resource-tracking lifecycle in ib_destroy_srq_user() when accessing a shared receive queue through the netlink path during destruction. A local user can access a shared receive queue that remains accessible through restrack while its vendor-specific resources are being released to trigger a use-after-free.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/88244ecc71cc0b3ed200f5ef7ddea6686adfd730
- https://git.kernel.org/stable/c/95c992c869df54a6a7061f5f3fb6400244f2af8f
- https://git.kernel.org/stable/c/9c704383529044c02122f85a2a9a42cbf14a07a6
- https://git.kernel.org/stable/c/a5bfd9fe05d5cebbd3e447bf7f7b2c663007d8b9
- https://git.kernel.org/stable/c/bedd7dee72588c838f5b67197ea8b387e7beb918
- https://git.kernel.org/stable/c/d3d0eabe6e39b024deb3e085e2d408d037e967c3