SB20260918192 - Out-of-bounds read in Linux kernel infiniband core driver
Published: September 18, 2026
Security Bulletin ID
SB20260918192
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) Out-of-bounds read (CVE-ID: CVE-2026-92523)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 0 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to perform an out-of-bounds read.
The vulnerability exists due to improper input validation in nldev_stat_set_counter_dynamic_doit when processing nested RDMA_NLDEV_ATTR_STAT_HWCOUNTERS netlink attributes. A local user can provide a nested attribute containing a child payload shorter than a u32 to perform an out-of-bounds read.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/0bfa897e3e1a61d172f95675b353168bc9290312
- https://git.kernel.org/stable/c/74f49255492a62658f36bf2578d7916f1c6ffad1
- https://git.kernel.org/stable/c/7828d68ae8cad3463e38def5c91668c84e722596
- https://git.kernel.org/stable/c/c57e238b475e8e1e514499772b8c0db5768be93f
- https://git.kernel.org/stable/c/d00b0d808ca706a04bd198827319a4a287eff82a
- https://git.kernel.org/stable/c/f8e9315236c8b5155158c6955a758e7960b143e6