Use-after-free in Linux kernel - CVE-2026-80768
Published: September 5, 2026
Vulnerability identifier: #VU147149
CSH Severity: Low
CVSS v4: 1 [CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-80768
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows an attacker with physical access to cause memory corruption.
The vulnerability exists due to a race condition causing a stack-use-after-return write in the FT260 HID driver's I2C read handling when a device response arrives after an I2C read times out. An attacker with physical access can provide a delayed device response containing an attacker-influenced payload to cause memory corruption.
Affected software
Linux kernel
How to mitigate CVE-2026-80768
Install security update from vendor's repository.
External References
- https://git.kernel.org/stable/c/2b907001e8a83cdb71e899fd3d77ab51e2c03f10
- https://git.kernel.org/stable/c/460514d46e8892189fc933a1b4433811cfa5c309
- https://git.kernel.org/stable/c/5aa5a1b7cc4b4bec5497ad9ef113fdfe37b232f3
- https://git.kernel.org/stable/c/77832d8f1c81d9f84b6b54807fb278586001d754
- https://git.kernel.org/stable/c/90e9298f2e4336a0e1ca7eeb173403df78056164
- https://git.kernel.org/stable/c/a8e1f970f9040294cfd9100c681c32af6c2aeec0
- https://git.kernel.org/stable/c/bf3e39df3a397fd82967a31d17c4e02c7feab221
- https://git.kernel.org/stable/c/d7ffbdc076675c84128d5b904e4d5167fe9f3a7f