CVE-2024-26583: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: tls: fix race between async notify and socket close The submitting thread (one which called recvmsg/sendmsg) may exit as soon as the async crypto handler calls complete() so any code past that point risks touching already freed data. Try to avoid the locking and extra flags altogether. Have the main thread hold an extra reference, this way we can depend solely on the atomic ref counter for synchronization. Don't futz with reiniting the completion, either, we are now tightly controlling when completion fires.

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CVSS v3.1 Score

4.7

MEDIUM

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-362 CWE-362

Affected Products

Vendor	Product	Versions
linux	linux_kernel	5.7.0 — 6.1.79
linux	linux_kernel	6.2.0 — 6.6.18
linux	linux_kernel	6.7.0 — 6.7.6

References

Advisories & Patches

https://git.kernel.org/stable/c/6209319b2efdd8524691187ee99c40637558fa33 https://git.kernel.org/stable/c/7a3ca06d04d589deec81f56229a9a9d62352ce01 https://git.kernel.org/stable/c/86dc27ee36f558fe223dbdfbfcb6856247356f4a https://git.kernel.org/stable/c/aec7961916f3f9e88766e2688992da6980f11b8d https://git.kernel.org/stable/c/6209319b2efdd8524691187ee99c40637558fa33 https://git.kernel.org/stable/c/7a3ca06d04d589deec81f56229a9a9d62352ce01 https://git.kernel.org/stable/c/86dc27ee36f558fe223dbdfbfcb6856247356f4a https://git.kernel.org/stable/c/aec7961916f3f9e88766e2688992da6980f11b8d

Other References

https://git.kernel.org/stable/c/f17d21ea73918ace8afb9c2d8e734dbf71c2c9d7 https://git.kernel.org/stable/c/f17d21ea73918ace8afb9c2d8e734dbf71c2c9d7 https://lists.fedoraproject.org/archives/list/[email protected]/message/EZOU3745CWCDZ7EMKMXB2OEEIB5Q3IWM/

Frequently Asked Questions

What is CVE-2024-26583? +

In the Linux kernel, the following vulnerability has been resolved: tls: fix race between async notify and socket close The submitting thread (one which called recvmsg/sendmsg) may exit as soon as the async crypto handler calls complete() so any code past that point risks touching already freed data. Try to avoid the locking and extra flags altogether. Have the main thread hold an extra reference, this way we can depend solely on the atomic ref counter for synchronization. Don't futz with reiniting the completion, either, we are now tightly controlling when completion fires. It has a CVSS v3.1 base score of 4.7 (MEDIUM).

How severe is CVE-2024-26583? +

CVE-2024-26583 has a CVSS v3.1 score of 4.7 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-26583? +

CVE-2024-26583 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-26583? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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