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

🗓️ 24 Dec 2025 10:55:51Reported by GoogleType 
osv
 osv🔗 osv.dev👁 1 Views

CVE fix: set goal start via ac_g_ex in ext4_mb_normalize_request and ensure range [first_data_block, blocks_count) to prevent underflow.

Related
Refs
ReporterTitlePublishedViews
Family
Tenable Nessus		Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2023-228)
28 Jun 202300:00
–nessus
Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2-2023-2100 (ALAS-2023-2100)
1 Jul 202300:00
–nessus
Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.10-2023-034 (ALASKERNEL-5.10-2023-034)
29 Jun 202300:00
–nessus
Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.15-2023-021 (ALASKERNEL-5.15-2023-021)
29 Jun 202300:00
–nessus
Tenable Nessus		Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.4-2023-047 (ALASKERNEL-5.4-2023-047)
29 Jun 202300:00
–nessus
Tenable Nessus		EulerOS 2.0 SP13 : kernel (EulerOS-SA-2026-1244)
10 Mar 202600:00
–nessus
Tenable Nessus		EulerOS 2.0 SP13 : kernel (EulerOS-SA-2026-1280)
10 Mar 202600:00
–nessus
Tenable Nessus		EulerOS Virtualization 2.13.1 : kernel (EulerOS-SA-2026-2132)
6 Jun 202600:00
–nessus
Tenable Nessus		EulerOS Virtualization 2.13.0 : kernel (EulerOS-SA-2026-2171)
6 Jun 202600:00
–nessus
Tenable Nessus		Photon OS 4.0: Linux PHSA-2021-4.0-0065
22 Jul 202100:00
–nessus
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02 Apr 2026 09:45Current
6.3Medium risk
Vulners AI Score6.3
EPSS0.00046
ext4 fixgoal startnormalize requestunderflow preventionblock rangefirst data blockblocks count
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