Memory corruption in Linux kernel - CVE-2026-93287
Published: September 25, 2026
Vulnerability identifier: #VU152116
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-93287
CWE-ID: CWE-119
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper bounds checking in the i2c-stub driver's stub_xfer function when processing caller-supplied I2C_SMBUS_I2C_BLOCK_DATA transfers. A local user can issue a crafted SMBus block transfer with an oversized length to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-93287
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3