Vulnerability record/PUBLISHED/Published Aug 17, 2024 09:09:23 UTC

CVE-2024-42314

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix extent map use-after-free when adding pages to compressed bio At add_ra_bio_pages() we are accessing the extent map to calculate 'add_size' after we dropped our reference on the extent map, resulting in a use-after-free. Fix this by computing 'add_size' before dropping our extent map reference.

Base score7.8/ 10

SeverityHighCVSS 3.1

Exploitability / impact

CVSS metric breakdown

Vector-derived attributes

Base severityHigh

Attack vectorLocalAV

Attack complexityLowAC

Privileges requiredLowPR

User interactionNoneUI

ScopeUnchangedS

Confidentiality impactHighC

Integrity impactHighI

Availability impactHighA

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

CVSS communicates standardized severity and impact characteristics. It does not establish whether a system is exploitable in your specific environment.

Record context

CVE Numbering AuthorityLinux

Last updatedAug 5, 2026 11:36:36 UTC

PublishedAug 17, 2024 09:09:23 UTC

ReservedJul 30, 2024 07:40:12 UTC