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CVE-2026-45934

kernel: btrfs: fix EEXIST abort due to non-consecutive gaps in chunk allocation

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Severity

Moderate

Red Hat Product Security

7

CVSS 3.1

Review impact separately from score.

Published · May 27, 2026

Updated · June 28, 2026

Description

A flaw was found in the Linux kernel's btrfs filesystem. This issue occurs due to non-consecutive gaps in chunk allocation, leading to overlapping chunk maps. A local attacker could exploit this by triggering specific chunk allocation scenarios, potentially causing filesystem operations to abort and resulting in a denial of service (DoS).

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 · 7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-1285 · Improper Validation of Specified Index, Position, or Offset in Input