Vulnerability-Lookup

GHSA-38G6-VX2Q-23WM

Vulnerability from github – Published: 2024-02-26 18:30 – Updated: 2024-06-26 00:31

Details

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

ext4: regenerate buddy after block freeing failed if under fc replay

This mostly reverts commit 6bd97bf273bd ("ext4: remove redundant mb_regenerate_buddy()") and reintroduces mb_regenerate_buddy(). Based on code in mb_free_blocks(), fast commit replay can end up marking as free blocks that are already marked as such. This causes corruption of the buddy bitmap so we need to regenerate it in that case.

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-2024-26601"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-02-26T16:27:59Z",
    "severity": "MODERATE"
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  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: regenerate buddy after block freeing failed if under fc replay\n\nThis mostly reverts commit 6bd97bf273bd (\"ext4: remove redundant\nmb_regenerate_buddy()\") and reintroduces mb_regenerate_buddy(). Based on\ncode in mb_free_blocks(), fast commit replay can end up marking as free\nblocks that are already marked as such. This causes corruption of the\nbuddy bitmap so we need to regenerate it in that case.",
  "id": "GHSA-38g6-vx2q-23wm",
  "modified": "2024-06-26T00:31:34Z",
  "published": "2024-02-26T18:30:31Z",
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CVE-2024-26601 (GCVE-0-2024-26601)

Vulnerability from cvelistv5 – Published: 2024-02-24 14:56 – Updated: 2025-05-04 08:52

Title

ext4: regenerate buddy after block freeing failed if under fc replay

Summary

In the Linux kernel, the following vulnerability has been resolved: ext4: regenerate buddy after block freeing failed if under fc replay This mostly reverts commit 6bd97bf273bd ("ext4: remove redundant mb_regenerate_buddy()") and reintroduces mb_regenerate_buddy(). Based on code in mb_free_blocks(), fast commit replay can end up marking as free blocks that are already marked as such. This causes corruption of the buddy bitmap so we need to regenerate it in that case.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/94ebf71bddbcd4ab1…
	https://git.kernel.org/stable/c/c1317822e2de80e78…
	https://git.kernel.org/stable/c/78327acd4cdc4a160…
	https://git.kernel.org/stable/c/ea42d6cffb0dd27a4…
	https://git.kernel.org/stable/c/6b0d48647935e4b8c…
	https://git.kernel.org/stable/c/c9b528c35795b7113…

Impacted products

Vendor

Product

Version

Linux

Affected: 0983142c5f17a62055ec851372273c3bc77e4788 , < 94ebf71bddbcd4ab1ce43ae32c6cb66396d2d51a (git)
Affected: 6bd97bf273bdb4944904e57480f6545bca48ad77 , < c1317822e2de80e78f137d3a2d99febab1b80326 (git)
Affected: 6bd97bf273bdb4944904e57480f6545bca48ad77 , < 78327acd4cdc4a1601af718b781eece577b6b7d4 (git)
Affected: 6bd97bf273bdb4944904e57480f6545bca48ad77 , < ea42d6cffb0dd27a417f410b9d0011e9859328cb (git)
Affected: 6bd97bf273bdb4944904e57480f6545bca48ad77 , < 6b0d48647935e4b8c7b75d1eccb9043fcd4ee581 (git)
Affected: 6bd97bf273bdb4944904e57480f6545bca48ad77 , < c9b528c35795b711331ed36dc3dbee90d5812d4e (git)

Linux

Affected: 5.11
Unaffected: 0 , < 5.11 (semver)
Unaffected: 5.10.211 , ≤ 5.10.* (semver)
Unaffected: 5.15.150 , ≤ 5.15.* (semver)
Unaffected: 6.1.78 , ≤ 6.1.* (semver)
Unaffected: 6.6.17 , ≤ 6.6.* (semver)
Unaffected: 6.7.5 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (original_commit_for_fix)

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Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-38G6-VX2Q-23WM

CVE-2024-26601 (GCVE-0-2024-26601)

Tags

Sightings

Nomenclature