# CVE-2024-56597: jfs: fix shift-out-of-bounds in dbSplit

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- 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 shift-out-of-bounds in dbSplit When dmt_budmin is less than zero, it causes errors in the later stages. Added a check to return an error beforehand in dbAllocCtl itself.

## 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.
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## 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/bbb24ce7f06ef9b7c05beb9340787cbe9fd3d08e
- https://git.kernel.org/stable/c/df7c76636952670b31bd6c12b3aed3c502122273
- https://git.kernel.org/stable/c/6676034aa753aa448beb30dbd75630927ba7cd96
- https://git.kernel.org/stable/c/51a203470f502a64a3da8dcea51c4748e8267a6c
- https://git.kernel.org/stable/c/c56245baf3fd1f79145dd7408e3ead034b74255c
- https://git.kernel.org/stable/c/52756a57e978e2706543a254f88f266cc6702f36
- https://git.kernel.org/stable/c/a5f5e4698f8abbb25fe4959814093fb5bfa1aa9d

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Page: https://cve.now/CVE-2024-56597
JSON: https://cve.now/api/v1/entries/CVE-2024-56597
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