Vulnerability-Lookup

GHSA-3J4F-WX4W-Q2CQ

Vulnerability from github – Published: 2024-02-22 18:30 – Updated: 2024-03-18 18:32

Details

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

erofs: fix inconsistent per-file compression format

EROFS can select compression algorithms on a per-file basis, and each per-file compression algorithm needs to be marked in the on-disk superblock for initialization.

However, syzkaller can generate inconsistent crafted images that use an unsupported algorithmtype for specific inodes, e.g. use MicroLZMA algorithmtype even it's not set in sbi->available_compr_algs. This can lead to an unexpected "BUG: kernel NULL pointer dereference" if the corresponding decompressor isn't built-in.

Fix this by checking against sbi->available_compr_algs for each m_algorithmformat request. Incorrect !erofs_sb_has_compr_cfgs preset bitmap is now fixed together since it was harmless previously.

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-2024-26590"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
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    "severity": "MODERATE"
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  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: fix inconsistent per-file compression format\n\nEROFS can select compression algorithms on a per-file basis, and each\nper-file compression algorithm needs to be marked in the on-disk\nsuperblock for initialization.\n\nHowever, syzkaller can generate inconsistent crafted images that use\nan unsupported algorithmtype for specific inodes, e.g. use MicroLZMA\nalgorithmtype even it\u0027s not set in `sbi-\u003eavailable_compr_algs`.  This\ncan lead to an unexpected \"BUG: kernel NULL pointer dereference\" if\nthe corresponding decompressor isn\u0027t built-in.\n\nFix this by checking against `sbi-\u003eavailable_compr_algs` for each\nm_algorithmformat request.  Incorrect !erofs_sb_has_compr_cfgs preset\nbitmap is now fixed together since it was harmless previously.",
  "id": "GHSA-3j4f-wx4w-q2cq",
  "modified": "2024-03-18T18:32:18Z",
  "published": "2024-02-22T18:30:30Z",
  "references": [
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      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26590"
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      "type": "CVSS_V3"
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CVE-2024-26590 (GCVE-0-2024-26590)

Vulnerability from cvelistv5 – Published: 2024-02-22 16:13 – Updated: 2026-05-11 20:00

Title

erofs: fix inconsistent per-file compression format

Summary

In the Linux kernel, the following vulnerability has been resolved: erofs: fix inconsistent per-file compression format EROFS can select compression algorithms on a per-file basis, and each per-file compression algorithm needs to be marked in the on-disk superblock for initialization. However, syzkaller can generate inconsistent crafted images that use an unsupported algorithmtype for specific inodes, e.g. use MicroLZMA algorithmtype even it's not set in `sbi->available_compr_algs`. This can lead to an unexpected "BUG: kernel NULL pointer dereference" if the corresponding decompressor isn't built-in. Fix this by checking against `sbi->available_compr_algs` for each m_algorithmformat request. Incorrect !erofs_sb_has_compr_cfgs preset bitmap is now fixed together since it was harmless previously.

Severity

5.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-22 16:17 UTC

CWE

CWE-476 - NULL Pointer Dereference

Assigner

Linux CNA under the mitre root

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

References

4 references

URL	Tags
https://git.kernel.org/stable/c/47467e04816cb2979…
https://git.kernel.org/stable/c/823ba1d2106019ddf…
https://git.kernel.org/stable/c/eed24b816e50c6cd1…
https://git.kernel.org/stable/c/118a8cf504d7dfa51…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 8f89926290c4b3d31748d5089b27952243be0693 , < 47467e04816cb297905c0f09bc2d11ef865942d9 (git) Affected: 8f89926290c4b3d31748d5089b27952243be0693 , < 823ba1d2106019ddf195287ba53057aee33cf724 (git) Affected: 8f89926290c4b3d31748d5089b27952243be0693 , < eed24b816e50c6cd18cbee0ff0d7218c8fced199 (git) Affected: 8f89926290c4b3d31748d5089b27952243be0693 , < 118a8cf504d7dfa519562d000f423ee3ca75d2c4 (git)
Linux	Linux	Affected: 5.16 Unaffected: 0 , < 5.16 (semver) Unaffected: 6.1.80 , ≤ 6.1.* (semver) Unaffected: 6.6.14 , ≤ 6.6.* (semver) Unaffected: 6.7.2 , ≤ 6.7.* (semver) Unaffected: 6.8 , ≤ * (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-3J4F-WX4W-Q2CQ

CVE-2024-26590 (GCVE-0-2024-26590)

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