SB20260928259 - Missing Release of Resource after Effective Lifetime in Linux kernel block driver

Description

This security bulletin contains information about 1 vulnerability.

1) Missing Release of Resource after Effective Lifetime (CVE-ID: CVE-2026-97952)

CWE-ID: CWE-772 - Missing Release of Resource after Effective Lifetime

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper resource cleanup in the sunvdc __send_request() function when a non-ENOTCONN descriptor send trigger fails during disk I/O submission. A local user can submit disk I/O requests that encounter trigger failures to cause a denial of service.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/0c6da21fa35e03fc74f09895433ccd6d4a9c3530
• https://git.kernel.org/stable/c/57835952566f0be9b365a6eb3a70b397a9d5ef47
• https://git.kernel.org/stable/c/ab81a5c1014a38dab0fb402609fd866b0bcb4726
• https://git.kernel.org/stable/c/f3322baa3a8ac87730feae952c1146269d78e098