CVE-2024-50180: linux kernel Memory Corruption — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: fbdev: sisfb: Fix strbuf array overflow The values of the variables xres and yres are placed in strbuf. These variables are obtained from strbuf1. The strbuf1 array contains digit characters and a space if the array contains non-digit characters. Then, when executing sprintf(strbuf, "%ux%ux8", xres, yres); more than 16 bytes will be written to strbuf. It is suggested to increase the size of the strbuf array to 24. Found by Linux Verification Center (linuxtesting.org) with SVACE.

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CVSS v3.1 Score

7.8

HIGH

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

Weakness Type (CWE)

CWE-787 Out-of-bounds Write

Affected Products

Vendor	Product	Versions
linux	linux_kernel	< 4.19.323
linux	linux_kernel	4.20 — 5.4.285
linux	linux_kernel	5.5 — 5.10.227
linux	linux_kernel	5.11 — 5.15.168
linux	linux_kernel	5.16 — 6.1.113
linux	linux_kernel	6.2 — 6.6.57
linux	linux_kernel	6.7 — 6.11.4

References

Advisories & Patches

https://git.kernel.org/stable/c/11c0d49093b82f6c547fd419c41a982d26bdf5ef https://git.kernel.org/stable/c/252f147b1826cbb30ae0304cf86b66d3bb12b743 https://git.kernel.org/stable/c/41cf6f26abe4f491b694c54bd1aa2530369b7510 https://git.kernel.org/stable/c/433c84c8495008922534c5cafdae6ff970fb3241 https://git.kernel.org/stable/c/57c4f4db0a194416da237fd09dad9527e00cb587 https://git.kernel.org/stable/c/688872c4ea4a528cd6a057d545c83506b533ee1f https://git.kernel.org/stable/c/889304120ecb2ca30674d89cd4ef15990b6a571c https://git.kernel.org/stable/c/9cf14f5a2746c19455ce9cb44341b5527b5e19c3

Other References

https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html

Frequently Asked Questions

What is CVE-2024-50180? +

In the Linux kernel, the following vulnerability has been resolved: fbdev: sisfb: Fix strbuf array overflow The values of the variables xres and yres are placed in strbuf. These variables are obtained from strbuf1. The strbuf1 array contains digit characters and a space if the array contains non-digit characters. Then, when executing sprintf(strbuf, "%ux%ux8", xres, yres); more than 16 bytes will be written to strbuf. It is suggested to increase the size of the strbuf array to 24. Found by Linux Verification Center (linuxtesting.org) with SVACE. It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-50180? +

CVE-2024-50180 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-50180? +

CVE-2024-50180 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-2024-50180? +

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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