SB2024031844 - Remote denial of service in Linux kernel TLS implementation

Description

This security bulletin contains information about 1 vulnerability.

1) Race condition (CVE-ID: CVE-2024-26583)

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

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a race condition between async notify and socket close in TLS implementation in net/tls/tls_sw.c. A remote attacker can send specially crafted traffic to the system, trigger a race condition and perform a denial of service (DoS) attack.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/aec7961916f3f9e88766e2688992da6980f11b8d
• https://git.kernel.org/stable/c/7a3ca06d04d589deec81f56229a9a9d62352ce01
• https://git.kernel.org/stable/c/86dc27ee36f558fe223dbdfbfcb6856247356f4a
• https://git.kernel.org/stable/c/6209319b2efdd8524691187ee99c40637558fa33
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.7.6