CVE - CVE-2024-26773

CVE-ID
CVE-2024-26773	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/0184747b552d6b5a14db3b7fcc3b792ce64dedd1 URL:https://git.kernel.org/stable/c/0184747b552d6b5a14db3b7fcc3b792ce64dedd1 MISC:https://git.kernel.org/stable/c/21f8cfe79f776287459343e9cfa6055af61328ea URL:https://git.kernel.org/stable/c/21f8cfe79f776287459343e9cfa6055af61328ea MISC:https://git.kernel.org/stable/c/260fc96283c0f594de18a1b045faf6d8fb42874d URL:https://git.kernel.org/stable/c/260fc96283c0f594de18a1b045faf6d8fb42874d MISC:https://git.kernel.org/stable/c/4530b3660d396a646aad91a787b6ab37cf604b53 URL:https://git.kernel.org/stable/c/4530b3660d396a646aad91a787b6ab37cf604b53 MISC:https://git.kernel.org/stable/c/4c21fa60a6f4606f6214a38f50612b17b2f738f5 URL:https://git.kernel.org/stable/c/4c21fa60a6f4606f6214a38f50612b17b2f738f5 MISC:https://git.kernel.org/stable/c/927794a02169778c9c2e7b25c768ab3ea8c1dc03 URL:https://git.kernel.org/stable/c/927794a02169778c9c2e7b25c768ab3ea8c1dc03 MISC:https://git.kernel.org/stable/c/a2576ae9a35c078e488f2c573e9e6821d651fbbe URL:https://git.kernel.org/stable/c/a2576ae9a35c078e488f2c573e9e6821d651fbbe MISC:https://git.kernel.org/stable/c/f97e75fa4e12b0aa0224e83fcbda8853ac2adf36 URL:https://git.kernel.org/stable/c/f97e75fa4e12b0aa0224e83fcbda8853ac2adf36
Assigning CNA
kernel.org
Date Record Created
20240219	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240219)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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