CVE-2026-43046

medium Red Hat
CVSS v3 Base Score
7.0
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score
0.0%
Exploitation probability in 30 days
Top 93% most likely to be exploited
Attack Characteristics
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Confidentiality
High
Integrity
High
Availability
High
Published: May 1, 2026 (13 days ago)
Last Modified: May 1, 2026
Vendor: Red Hat
Source: REDHAT

Description

A flaw was found in the Linux kernel's btrfs filesystem. This vulnerability allows an attacker with local access to trigger a kernel bug (system crash) by providing specially crafted, malformed btrfs metadata on disk. Specifically, an invalid state where drop_progress.objectid is non-zero and drop_level is zero in a root_item is not properly validated when read from disk. This can lead to a denial of service (DoS) when the system attempts to recover relocation or drop a snapshot.

CWE

CWE-1288

Affected Products

Red Hat Enterprise Linux 10Red Hat Enterprise Linux 6Red Hat Enterprise Linux 7Red Hat Enterprise Linux 8Red Hat Enterprise Linux 9

References

🔗 bugzilla.redhat.com 🔗 www.cve.org 🔗 nvd.nist.gov 🔗 lore.kernel.org