SB20260918352 - Out-of-bounds read in Linux kernel rsc_table_for_each_entry() in include/linux/rsc_table.h
Published: September 18, 2026
Security Bulletin ID
SB20260918352
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-2026-90314)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to read memory out of bounds.
The vulnerability exists due to improper signedness handling in rsc_table_for_each_entry() when processing a firmware resource table. A local user can provide a crafted firmware resource table containing an offset interpreted as negative to read memory out of bounds.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/0d385be8f199b349f325cf90584b47b6a044ea79
- https://git.kernel.org/stable/c/6282d47b24b0c98d08d02807d676a7f67b4c052e
- https://git.kernel.org/stable/c/6a01ad25aa4f3a02153cf1d112cb9b65865cd5d8
- https://git.kernel.org/stable/c/6fd220604f06c746760183df74b07384c3fdd660
- https://git.kernel.org/stable/c/bb840ea69347aff7bde5a208e7b5b180669a7656
- https://git.kernel.org/stable/c/bc4940793aaa16a9cf90063b11d6926f8014a1b7
- https://git.kernel.org/stable/c/c82241a9454b2d30d53b50884f94b7972ba44a5e
- https://git.kernel.org/stable/c/cc85e0d3d3333fd5fd2d50c9a4578d209d7f2564