SB20260928210 - Out-of-bounds read in Linux kernel char driver

Description

This security bulletin contains information about 1 vulnerability.

1) Out-of-bounds read (CVE-ID: CVE-2026-97995)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 0 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local privileged user to cause an out-of-bounds read.

The vulnerability exists due to type confusion in the virtio_console remove_vqs() function when unbinding a device with a control message remaining on the control-out virtqueue. A local privileged user can unbind the device while the control message is queued to cause an out-of-bounds read.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/177ee901aa2bab02e7f1f8edbb814fd5e386ed62
• https://git.kernel.org/stable/c/894f98e73983f37354214a89a3a7fd35bf9e3072
• https://git.kernel.org/stable/c/a80c33488e0bbe642ed803b13a4ac8078a70b507
• https://git.kernel.org/stable/c/f620c40ea6862feed84deb105568b21ec53a7830