SB2026090437 - Use-after-free in Linux kernel ata driver
Published: September 4, 2026
Security Bulletin ID
SB2026090437
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-2026-80732)
CWE-ID: CWE-416 - Use After Free
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 access freed memory.
The vulnerability exists due to use-after-free in the sl82c105_bridge_revision function of the pata_sl82c105 driver when reading a PCI bridge revision after releasing the PCI device reference. A local user can trigger bridge revision handling to access freed memory.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/1268ca9418e2217f2b60705cf4a280b689b26678
- https://git.kernel.org/stable/c/56fd78c8c820f527f8003e379ab71004b2e79a44
- https://git.kernel.org/stable/c/5ef87b1b4656d675440ceab32a56e69ad958d3a1
- https://git.kernel.org/stable/c/7700a31039cdc6715cb6cce7e7a664ee4e945f67
- https://git.kernel.org/stable/c/a626dfca96041842053cf2d1efceb436c4cd8dcf
- https://git.kernel.org/stable/c/a837deeaa37cc3f0e8c4e5c096787047f272c956
- https://git.kernel.org/stable/c/dc711fb137b33c12e6ca22b6a9c9b9f21d49e4de
- https://git.kernel.org/stable/c/fa0dca89b4fb0909ffda7b9ab6051af33270f95e