CVE-2024-26773

Advisory lineage Upstream: 0 Downstream: 36
Analyzed
Published: 03 Apr 2024, 17:00
Last modified:11 May 2026, 20:03

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
0.01% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

03 Apr 2024, 17:00
Published
Vulnerability first disclosed
11 May 2026, 20:03
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: ext4: avoid allocating blocks from corrupted group in ext4_mb_try_best_found() Determine if the group block bitmap is corrupted before using ac_b_ex in ext4_mb_try_best_found() to avoid allocating blocks from a group with a corrupted block bitmap in the following concurrency and making the situation worse. ext4_mb_regular_allocator ext4_lock_group(sb, group) ext4_mb_good_group // check if the group bbitmap is corrupted ext4_mb_complex_scan_group // Scan group gets ac_b_ex but doesn't use it ext4_unlock_group(sb, group) ext4_mark_group_bitmap_corrupted(group) // The block bitmap was corrupted during // the group unlock gap. ext4_mb_try_best_found ext4_lock_group(ac->ac_sb, group) ext4_mb_use_best_found mb_mark_used // Allocating blocks in block bitmap corrupted group

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.01%• Percentile: 3%

Affected Systems

  • debian•debian_linux

    10.0

  • linux•linux

    ≥ 163a203ddb36c36d4a1c942aececda0cc8d06aa7, < 21f8cfe79f776287459343e9cfa6055af61328ea | ≥ 163a203ddb36c36d4a1c942aececda0cc8d06aa7, < 260fc96283c0f594de18a1b045faf6d8fb42874d | ≥ 163a203ddb36c36d4a1c942aececda0cc8d06aa7, < 927794a02169778c9c2e7b25c768ab3ea8c1dc03 | ≥ 163a203ddb36c36d4a1c942aececda0cc8d06aa7, < 4c21fa60a6f4606f6214a38f50612b17b2f738f5 | ≥ 163a203ddb36c36d4a1c942aececda0cc8d06aa7, < f97e75fa4e12b0aa0224e83fcbda8853ac2adf36 | ≥ 163a203ddb36c36d4a1c942aececda0cc8d06aa7, < 0184747b552d6b5a14db3b7fcc3b792ce64dedd1 | ≥ 163a203ddb36c36d4a1c942aececda0cc8d06aa7, < a2576ae9a35c078e488f2c573e9e6821d651fbbe | ≥ 163a203ddb36c36d4a1c942aececda0cc8d06aa7, < 4530b3660d396a646aad91a787b6ab37cf604b53 | 3.12

  • linux•linux_kernel

    < 4.19.308 | ≥ 4.20, < 5.4.270 | ≥ 5.5, < 5.10.211 | ≥ 5.11, < 5.15.150 | ≥ 5.16, < 6.1.80 | ≥ 6.2, < 6.6.19 | ≥ 6.7, < 6.7.7 | 6.8:rc1 | 6.8:rc2

References (10)