Vulnerability-Lookup

GHSA-8F4H-JJH9-FXRX

Vulnerability from github – Published: 2024-08-26 12:31 – Updated: 2025-11-04 00:31

Details

In the Linux kernel, the following vulnerability has been resolved:

jfs: Fix shift-out-of-bounds in dbDiscardAG

When searching for the next smaller log2 block, BLKSTOL2() returned 0, causing shift exponent -1 to be negative.

This patch fixes the issue by exiting the loop directly when negative shift is found.

Severity

5.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2024-44938"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-08-26T12:15:05Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\njfs: Fix shift-out-of-bounds in dbDiscardAG\n\nWhen searching for the next smaller log2 block, BLKSTOL2() returned 0,\ncausing shift exponent -1 to be negative.\n\nThis patch fixes the issue by exiting the loop directly when negative\nshift is found.",
  "id": "GHSA-8f4h-jjh9-fxrx",
  "modified": "2025-11-04T00:31:19Z",
  "published": "2024-08-26T12:31:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-44938"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/234e6ea0855cdb5673d54ecaf7dc5c78f3e84630"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4de2c04c3acd5b84f50b0d2f8f09e9b2f42374b9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7063b80268e2593e58bee8a8d709c2f3ff93e2f2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bb7c605a754823b86dd74f6537ccb9d38a9dec5a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bd04a149e3a29e7f71b7956ed41dba34e42d539e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f650148b43949ca9e37e820804bb6026fff404f3"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"
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  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2024-44938 (GCVE-0-2024-44938)

Vulnerability from cvelistv5 – Published: 2024-08-26 11:20 – Updated: 2026-05-11 20:32

Title

jfs: Fix shift-out-of-bounds in dbDiscardAG

Summary

In the Linux kernel, the following vulnerability has been resolved: jfs: Fix shift-out-of-bounds in dbDiscardAG When searching for the next smaller log2 block, BLKSTOL2() returned 0, causing shift exponent -1 to be negative. This patch fixes the issue by exiting the loop directly when negative shift is found.

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-10 15:27 UTC

Assigner

Linux CNA under the mitre root

CNA scorecard D 54/100 over 6618 records in the last 180 days details

References

8 references

URL	Tags
https://git.kernel.org/stable/c/bb7c605a754823b86…
https://git.kernel.org/stable/c/4de2c04c3acd5b84f…
https://git.kernel.org/stable/c/bd04a149e3a29e7f7…
https://git.kernel.org/stable/c/f650148b43949ca9e…
https://git.kernel.org/stable/c/234e6ea0855cdb567…
https://git.kernel.org/stable/c/7063b80268e2593e5…
https://lists.debian.org/debian-lts-announce/2025…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: b40c2e665cd552eae5fbdbb878bc29a34357668e , < bb7c605a754823b86dd74f6537ccb9d38a9dec5a (git) Affected: b40c2e665cd552eae5fbdbb878bc29a34357668e , < 4de2c04c3acd5b84f50b0d2f8f09e9b2f42374b9 (git) Affected: b40c2e665cd552eae5fbdbb878bc29a34357668e , < bd04a149e3a29e7f71b7956ed41dba34e42d539e (git) Affected: b40c2e665cd552eae5fbdbb878bc29a34357668e , < f650148b43949ca9e37e820804bb6026fff404f3 (git) Affected: b40c2e665cd552eae5fbdbb878bc29a34357668e , < 234e6ea0855cdb5673d54ecaf7dc5c78f3e84630 (git) Affected: b40c2e665cd552eae5fbdbb878bc29a34357668e , < 7063b80268e2593e58bee8a8d709c2f3ff93e2f2 (git)
Linux	Linux	Affected: 3.7 Unaffected: 0 , < 3.7 (semver) Unaffected: 5.10.237 , ≤ 5.10.* (semver) Unaffected: 5.15.181 , ≤ 5.15.* (semver) Unaffected: 6.1.107 , ≤ 6.1.* (semver) Unaffected: 6.6.47 , ≤ 6.6.* (semver) Unaffected: 6.10.6 , ≤ 6.10.* (semver) Unaffected: 6.11 , ≤ * (original_commit_for_fix)

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JSON

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-8F4H-JJH9-FXRX

CVE-2024-44938 (GCVE-0-2024-44938)

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