Out-of-bounds read in Linux kernel - CVE-2026-92523
Published: September 18, 2026
Vulnerability identifier: #VU150991
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2026-92523
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Linux kernel
How to mitigate CVE-2026-92523
Install security update from vendor's repository.
External 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