CVE-2024-57791: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: net/smc: check return value of sock_recvmsg when draining clc data When receiving clc msg, the field length in smc_clc_msg_hdr indicates the length of msg should be received from network and the value should not be fully trusted as it is from the network. Once the value of length exceeds the value of buflen in function smc_clc_wait_msg it may run into deadloop when trying to drain the remaining data exceeding buflen. This patch checks the return value of sock_recvmsg when draining data in case of deadloop in draining.

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CVSS v3.1 Score

7.5

HIGH

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

Affected Products

Vendor	Product	Versions
linux	linux_kernel	5.8.1 — 5.10.233
linux	linux_kernel	5.11 — 5.15.176
linux	linux_kernel	5.16 — 6.1.122
linux	linux_kernel	6.2 — 6.6.68
linux	linux_kernel	6.7 — 6.12.7
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/6b80924af6216277892d5f091f5bfc7d1265fa28 https://git.kernel.org/stable/c/7a6927814b4256d603e202ae7c5e38db3b338896 https://git.kernel.org/stable/c/82c7ad9ca09975aae737abffd66d1ad98874c13d https://git.kernel.org/stable/c/c5b8ee5022a19464783058dc6042e8eefa34e8cd https://git.kernel.org/stable/c/d7d1f986ebb284b1db8dafca7d1bdb6dd2445cf6 https://git.kernel.org/stable/c/df3dfe1a93c6298d8c09a18e4fba19ef5b17763b

Other References

https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html

Frequently Asked Questions

What is CVE-2024-57791? +

In the Linux kernel, the following vulnerability has been resolved: net/smc: check return value of sock_recvmsg when draining clc data When receiving clc msg, the field length in smc_clc_msg_hdr indicates the length of msg should be received from network and the value should not be fully trusted as it is from the network. Once the value of length exceeds the value of buflen in function smc_clc_wait_msg it may run into deadloop when trying to drain the remaining data exceeding buflen. This patch checks the return value of sock_recvmsg when draining data in case of deadloop in draining. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2024-57791? +

CVE-2024-57791 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-57791? +

CVE-2024-57791 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-2024-57791? +

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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