CVE-2026-43068
kernel: ext4: avoid allocate block from corrupted group in ext4_mb_find_by_goal()
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 5, 2026
Updated · July 3, 2026
Description
A flaw was found in the Linux kernel's ext4 filesystem. This vulnerability occurs when the system attempts to allocate blocks from a corrupted block group within the ext4 filesystem. An attacker with local access could potentially trigger this condition, leading to delayed block allocation failures and subsequent data loss. This issue can also result in a denial of service (DoS) due to the filesystem becoming corrupted and unable to perform write operations reliably.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-237 · Improper Handling of Structural Elements