Not yet scoredPublished Dec 24, 2025

CVE-2023-54021ext4: set goal start correctly in ext4_mb_normalize_request

Updated under an hour ago (Oct 27, 2026, 11:10 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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 ]

CVSS: Not yet scored
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Deferred
Record last updated: May 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from c9de560ded61faa5b754137b7753da252391c55a before 2479bb6cbdb4d56b807bbe5229e3e26a6f1f4530; from c9de560ded61faa5b754137b7753da252391c55a before 390eee955d4de4662db5e3e9e9a9eae020432cb7; from c9de560ded61faa5b754137b7753da252391c55a before cee78217a7ae72d11c2e21e1a5263b8044489823; from c9de560ded61faa5b754137b7753da252391c55a before 3ca3005b502ca8ea87d6a344323b179b48c4e4a3; from c9de560ded61faa5b754137b7753da252391c55a before bc4a3e1d07a86ae5845321d371190244acacb2f2; from c9de560ded61faa5b754137b7753da252391c55a before c6bee8970075b256fc1b07bf4873049219380818; from c9de560ded61faa5b754137b7753da252391c55a before abb330ffaa3a0ae7ce632e28c9260b461c01f19f; from c9de560ded61faa5b754137b7753da252391c55a before b07ffe6927c75d99af534d685282ea188d9f71a6	CNA record

References

References

https://git.kernel.org/stable/c/2479bb6cbdb4d56b807bbe5229e3e26a6f1f4530
https://git.kernel.org/stable/c/390eee955d4de4662db5e3e9e9a9eae020432cb7
https://git.kernel.org/stable/c/cee78217a7ae72d11c2e21e1a5263b8044489823
https://git.kernel.org/stable/c/3ca3005b502ca8ea87d6a344323b179b48c4e4a3
https://git.kernel.org/stable/c/bc4a3e1d07a86ae5845321d371190244acacb2f2
https://git.kernel.org/stable/c/c6bee8970075b256fc1b07bf4873049219380818
https://git.kernel.org/stable/c/abb330ffaa3a0ae7ce632e28c9260b461c01f19f
https://git.kernel.org/stable/c/b07ffe6927c75d99af534d685282ea188d9f71a6

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.