CVE-2023-54021 (GCVE-0-2023-54021)
Vulnerability from cvelistv5 – Published: 2025-12-24 10:55 – Updated: 2025-12-24 10:55
VLAI?
Title
ext4: set goal start correctly in ext4_mb_normalize_request
Summary
In the Linux kernel, the following vulnerability has been resolved:
ext4: set goal start correctly in ext4_mb_normalize_request
We need to set ac_g_ex to notify the goal start used in
ext4_mb_find_by_goal. Set ac_g_ex instead of ac_f_ex in
ext4_mb_normalize_request.
Besides we should assure goal start is in range [first_data_block,
blocks_count) as ext4_mb_initialize_context does.
[ Added a check to make sure size is less than ar->pright; otherwise
we could end up passing an underflowed value of ar->pright - size to
ext4_get_group_no_and_offset(), which will trigger a BUG_ON later on.
- TYT ]
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux |
Affected:
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 2479bb6cbdb4d56b807bbe5229e3e26a6f1f4530
(git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 390eee955d4de4662db5e3e9e9a9eae020432cb7 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < cee78217a7ae72d11c2e21e1a5263b8044489823 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 3ca3005b502ca8ea87d6a344323b179b48c4e4a3 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < bc4a3e1d07a86ae5845321d371190244acacb2f2 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < c6bee8970075b256fc1b07bf4873049219380818 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < abb330ffaa3a0ae7ce632e28c9260b461c01f19f (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b07ffe6927c75d99af534d685282ea188d9f71a6 (git) |
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}
}
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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.
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