CVE-2023-54021
ext4: set goal start correctly in ext4_mb_normalize_request
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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 ]
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Dec 24, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
c9de560ded61faa5b754137b7753da252391c55a < 2479bb6cbdb4d56b807bbe5229e3e26a6f1f4530 c9de560ded61faa5b754137b7753da252391c55a < 390eee955d4de4662db5e3e9e9a9eae020432cb7 c9de560ded61faa5b754137b7753da252391c55a < cee78217a7ae72d11c2e21e1a5263b8044489823 c9de560ded61faa5b754137b7753da252391c55a < 3ca3005b502ca8ea87d6a344323b179b48c4e4a3 c9de560ded61faa5b754137b7753da252391c55a < bc4a3e1d07a86ae5845321d371190244acacb2f2 c9de560ded61faa5b754137b7753da252391c55a < c6bee8970075b256fc1b07bf4873049219380818 c9de560ded61faa5b754137b7753da252391c55a < abb330ffaa3a0ae7ce632e28c9260b461c01f19f c9de560ded61faa5b754137b7753da252391c55a < b07ffe6927c75d99af534d685282ea188d9f71a6
Linux / Linux
2.6.25
References
git.kernel.org: https://git.kernel.org/stable/c/2479bb6cbdb4d56b807bbe5229e3e26a6f1f4530 git.kernel.org: https://git.kernel.org/stable/c/390eee955d4de4662db5e3e9e9a9eae020432cb7 git.kernel.org: https://git.kernel.org/stable/c/cee78217a7ae72d11c2e21e1a5263b8044489823 git.kernel.org: https://git.kernel.org/stable/c/3ca3005b502ca8ea87d6a344323b179b48c4e4a3 git.kernel.org: https://git.kernel.org/stable/c/bc4a3e1d07a86ae5845321d371190244acacb2f2 git.kernel.org: https://git.kernel.org/stable/c/c6bee8970075b256fc1b07bf4873049219380818 git.kernel.org: https://git.kernel.org/stable/c/abb330ffaa3a0ae7ce632e28c9260b461c01f19f git.kernel.org: https://git.kernel.org/stable/c/b07ffe6927c75d99af534d685282ea188d9f71a6