Out-of-bounds read in Linux kernel - CVE-2026-64097
Published: July 20, 2026
Vulnerability identifier: #VU138544
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2026-64097
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local attacker to disclose sensitive information.
The vulnerability exists due to out-of-bounds read in get_gpio_i2c_info() and bios_parser_get_gpio_pin_info() when parsing a malformed VBIOS GPIO pin LUT table. A local attacker can supply a crafted VBIOS image with an invalid structuresize field to disclose sensitive information.
How to mitigate CVE-2026-64097
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/67461e0c15335894cc5d3b84cda823bf8cbdc886
- https://git.kernel.org/stable/c/7ca695b3122297b06a3ed605bbe1cd32c85d9f5a
- https://git.kernel.org/stable/c/86d2b20644b11d21fe52c596e6e922b4590a3e3f
- https://git.kernel.org/stable/c/9900f6954be779011e7c2cd42addd87baf028bc5
- https://git.kernel.org/stable/c/f2a4827e980ba07de4391fa84d9c39a12726bdd7
- https://git.kernel.org/stable/c/fb30a3890d62fd50a95aef684faf64a307592e42