01 Record

CVE-2024-56581

btrfs: ref-verify: fix use-after-free after invalid ref action

HighPUBLISHEDCNA: Linux

CNA base score7.0 CVSS v3.xCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

View raw JSON

02 Description

btrfs: ref-verify: fix use-after-free after invalid ref action

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.24% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 14.9% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-08-04.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2024-12-27 14:23Z1 YR AGO

Last updated

2026-08-05 11:45Z1 MO AGO

Reserved

2024-12-27

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.0)

CNA CVSS vector

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

Weaknesses

CWE-416Use After FreeVariant

Data version

5.2

Document digest

2b4af9cef21c6d4399f281f7a032fcb069e4410dd2a84093eb0f931f213975c6

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxfd708b81d972a0714b02a60eb4792fdbf15868c4 to < dfb9fe7de61f34cc241ab3900bdde93341096e0e, fd708b81d972a0714b02a60eb4792fdbf15868c4 to < 6fd018aa168e472ce35be32296d109db6adb87ea, fd708b81d972a0714b02a60eb4792fdbf15868c4 to < d2b85ce0561fde894e28fa01bd5d32820d585006, fd708b81d972a0714b02a60eb4792fdbf15868c4 to < 6370db28af9a8ae3bbdfe97f8a48f8f995e144cf, fd708b81d972a0714b02a60eb4792fdbf15868c4 to < 4275ac2741941c9c7c2293619fdbacb9f70ba85b, fd708b81d972a0714b02a60eb4792fdbf15868c4 to < a6f9e7a0bf1185c9070c0de03bb85eafb9abd650, fd708b81d972a0714b02a60eb4792fdbf15868c4 to < 7c4e39f9d2af4abaf82ca0e315d1fd340456620f, 4.15—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/dfb9fe7de61f34cc241ab3900bdde93341096e0e
git.kernel.orghttps://git.kernel.org/stable/c/6fd018aa168e472ce35be32296d109db6adb87ea
git.kernel.orghttps://git.kernel.org/stable/c/d2b85ce0561fde894e28fa01bd5d32820d585006
git.kernel.orghttps://git.kernel.org/stable/c/6370db28af9a8ae3bbdfe97f8a48f8f995e144cf
git.kernel.orghttps://git.kernel.org/stable/c/4275ac2741941c9c7c2293619fdbacb9f70ba85b
git.kernel.orghttps://git.kernel.org/stable/c/a6f9e7a0bf1185c9070c0de03bb85eafb9abd650
git.kernel.orghttps://git.kernel.org/stable/c/7c4e39f9d2af4abaf82ca0e315d1fd340456620f
lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/03/msg00002.html

01 Record index

CVE-2024-56581

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2024-56581

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References