SB20260928136 - Race condition in Linux kernel rds

Description

This security bulletin contains information about 1 vulnerability.

1) Race condition (CVE-ID: CVE-2026-98068)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

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 a race condition in RDS TCP connection path shutdown handling when connection teardown races with acceptance of a new socket. A remote attacker can trigger concurrent connection teardown and socket acceptance to cause a denial of service.

The affected path can remain in RDS_CONN_DOWN with an established socket and a growing receive queue.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/260c6308fe2e19ad519389d44d582e292aecc3af
• https://git.kernel.org/stable/c/2941561395066be856a53626d4ca973dd9c982b2
• https://git.kernel.org/stable/c/4cb9b6d3d31a2dbaa5469981c2c4c03e9acc7aca
• https://git.kernel.org/stable/c/bd1cb197a07111ca8d4f4c21411c56a3c85a9797