SB20260815214 - Improper Initialization in Linux kernel microsoft mana driver
Published: August 15, 2026
Security Bulletin ID
SB20260815214
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Initialization (CVE-ID: CVE-2026-74265)
CWE-ID: CWE-665 - Improper Initialization
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 initialization in mana_gd_create_mana_wq_cq() when handling a failed work queue and completion queue creation. A local user can trigger queue creation failure to cause a denial of service.
The issue can clear an in-use completion queue table entry by destroying a queue with an uninitialized id value of 0.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/150590d9ab0dbeb0087193058363819d4c82a00f
- https://git.kernel.org/stable/c/372e7318af379eee29ab6e60848ce7d7db76c85a
- https://git.kernel.org/stable/c/5985474e1cb4034680fac2145497a94b0860be50
- https://git.kernel.org/stable/c/62ce489acb428a936bdf243e7b92b3eb341447cf
- https://git.kernel.org/stable/c/8e52a247d9aa979d43eb9ff1e445b9b3bf229d4d
- https://git.kernel.org/stable/c/a493cbb6b11acd4adc93397a4b12bd460d47620d
- https://git.kernel.org/stable/c/c6662f3ad1c7c3549a1c39545651833220b0de89