SB20260928319 - Resource exhaustion in Linux kernel microsoft mana driver

Description

This security bulletin contains information about 1 vulnerability.

1) Resource exhaustion (CVE-ID: CVE-2026-97613)

CWE-ID: CWE-400 - Resource exhaustion

CVSSv4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper completion queue sizing in the MANA network driver's RX completion queue when processing receive completions while the queue is full. A remote attacker can cause the receive completion queue to become full while a fence completion is pending to cause a denial of service.

The dropped fence completion can cause the driver to hold the RTNL lock for the timeout duration.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/1e43c407624d2111c19d4d8ffe9b2191a0ec42de
• https://git.kernel.org/stable/c/62eb52454afcc1d390b8624c5d1ddc92cf382f39
• https://git.kernel.org/stable/c/6c739cb89ebd6cf225dac46d2721e11927a7ead4
• https://git.kernel.org/stable/c/80dd7e754b3aa9637a0758ad93fa209f9650ec48