SB20260816456 - Use-after-free in Linux kernel input misc driver
Published: August 16, 2026
Security Bulletin ID
SB20260816456
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Physical access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use-after-free (CVE-ID: CVE-2026-72079)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 5.1 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows an attacker with physical access to trigger a use-after-free or double-free.
The vulnerability exists due to a use-after-free and double-free in ims_pcu_disconnect() when handling the disconnection of a crafted USB interface. An attacker with physical access can present a malicious device with a data interface masquerading as the control interface to trigger a use-after-free or double-free.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/293388e42e5c0865204de6f36bfb8662156fce3b
- https://git.kernel.org/stable/c/315f269ea04bc1477ab9bf351e939623d12a1621
- https://git.kernel.org/stable/c/462a999917755a3bf77448dfd64307963cf0a9f0
- https://git.kernel.org/stable/c/6a6c373e6a82eddc522342c8a8db7072c65f2b56
- https://git.kernel.org/stable/c/6aacc18004b1a915ccb8a829d30279a37988066e
- https://git.kernel.org/stable/c/921abbb33887052e46b1b77299f87a3c741dc580
- https://git.kernel.org/stable/c/a4b3f4d42fbf58f06f0d49e37a9d0d9392eca338
- https://git.kernel.org/stable/c/bf0b58ba489d0bdaa18c7dd8beeaeb954dd7dbb7