CVE-2024-26773
"Linux Kernel ext4 Block Allocation Bitmap Corruption Vulnerability"
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
INFO
Published Date :
April 3, 2024, 5:15 p.m.
Last Modified :
March 18, 2025, 4:47 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-26773.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-26773 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-26773 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Mar. 18, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.80 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.150 *cpe:2.3:o:linux:linux_kernel:6.8:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.20 up to (excluding) 5.4.270 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.7.7 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 4.19.308 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.211 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.19 Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Added Reference Type CVE: https://git.kernel.org/stable/c/0184747b552d6b5a14db3b7fcc3b792ce64dedd1 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/0184747b552d6b5a14db3b7fcc3b792ce64dedd1 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/21f8cfe79f776287459343e9cfa6055af61328ea Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/21f8cfe79f776287459343e9cfa6055af61328ea Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/260fc96283c0f594de18a1b045faf6d8fb42874d Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/260fc96283c0f594de18a1b045faf6d8fb42874d Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/4530b3660d396a646aad91a787b6ab37cf604b53 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/4530b3660d396a646aad91a787b6ab37cf604b53 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/4c21fa60a6f4606f6214a38f50612b17b2f738f5 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/4c21fa60a6f4606f6214a38f50612b17b2f738f5 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/927794a02169778c9c2e7b25c768ab3ea8c1dc03 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/927794a02169778c9c2e7b25c768ab3ea8c1dc03 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/a2576ae9a35c078e488f2c573e9e6821d651fbbe Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/a2576ae9a35c078e488f2c573e9e6821d651fbbe Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/f97e75fa4e12b0aa0224e83fcbda8853ac2adf36 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/f97e75fa4e12b0aa0224e83fcbda8853ac2adf36 Types: Patch Added Reference Type CVE: https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html Types: Mailing List Added Reference Type CVE: https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html Types: Mailing List -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/0184747b552d6b5a14db3b7fcc3b792ce64dedd1 Added Reference https://git.kernel.org/stable/c/21f8cfe79f776287459343e9cfa6055af61328ea Added Reference https://git.kernel.org/stable/c/260fc96283c0f594de18a1b045faf6d8fb42874d Added Reference https://git.kernel.org/stable/c/4530b3660d396a646aad91a787b6ab37cf604b53 Added Reference https://git.kernel.org/stable/c/4c21fa60a6f4606f6214a38f50612b17b2f738f5 Added Reference https://git.kernel.org/stable/c/927794a02169778c9c2e7b25c768ab3ea8c1dc03 Added Reference https://git.kernel.org/stable/c/a2576ae9a35c078e488f2c573e9e6821d651fbbe Added Reference https://git.kernel.org/stable/c/f97e75fa4e12b0aa0224e83fcbda8853ac2adf36 Added Reference https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html Added Reference https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Nov. 05, 2024
Action Type Old Value New Value Removed Reference kernel.org https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html Removed Reference kernel.org https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 27, 2024
Action Type Old Value New Value Added Reference kernel.org https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html [No types assigned] -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 25, 2024
Action Type Old Value New Value Added Reference kernel.org https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html [No types assigned] -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 29, 2024
Action Type Old Value New Value -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 14, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Apr. 03, 2024
Action Type Old Value New Value Added 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 Added Reference kernel.org https://git.kernel.org/stable/c/21f8cfe79f776287459343e9cfa6055af61328ea [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/260fc96283c0f594de18a1b045faf6d8fb42874d [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/927794a02169778c9c2e7b25c768ab3ea8c1dc03 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/4c21fa60a6f4606f6214a38f50612b17b2f738f5 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/f97e75fa4e12b0aa0224e83fcbda8853ac2adf36 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/0184747b552d6b5a14db3b7fcc3b792ce64dedd1 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/a2576ae9a35c078e488f2c573e9e6821d651fbbe [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/4530b3660d396a646aad91a787b6ab37cf604b53 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-26773 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-26773
weaknesses.