01 Record

CVE-2023-3111

A use after free vulnerability was found in prepare_to_relocate in fs/btrfs/relocation.c in btrfs in the Linux Kernel. This possible flaw can be triggered by calling btrfs_ioctl_balance() before

HighPUBLISHEDCNA: redhat

CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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02 Description

A use after free vulnerability was found in prepare_to_relocate in fs/btrfs/relocation.c in btrfs in the Linux Kernel. This possible flaw can be triggered by calling btrfs_ioctl_balance() before

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

0.43% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 37.8% 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 2026-06-17.

Red Hat severity

Low. 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

2023-06-05 00:00Z3 YR AGO

Last updated

2025-04-23 16:21Z1 YR AGO

Reserved

2023-06-05

Assigning CNA

redhat

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

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

Weaknesses

CWE-416Use After FreeVariant

Data version

5.1

Document digest

1852fdcd656750333c62d6a41f86076d4f5237ea99fc5d943b04fe0a454fc6c8

05 Affected products

VendorProductVersionsPlatforms

n/aKernelKernel version prior to Kernel 6.0-rc2—

06 References

patchwork.kernel.orghttps://patchwork.kernel.org/project/linux-btrfs/patch/20220721074829.2905233-1-r33s3n6%40gmail.com/
security.netapp.comhttps://security.netapp.com/advisory/ntap-20230703-0007/
lists.debian.org[debian-lts-announce] 20230727 [SECURITY] [DLA 3508-1] linux security updatehttps://lists.debian.org/debian-lts-announce/2023/07/msg00030.htmlmailing-list
www.debian.orgDSA-5480https://www.debian.org/security/2023/dsa-5480vendor-advisory
lists.debian.org[debian-lts-announce] 20231019 [SECURITY] [DLA 3623-1] linux-5.10 security updatehttps://lists.debian.org/debian-lts-announce/2023/10/msg00027.htmlmailing-list

07 Fixed in

Debian 12

linux
Fixed in 5.19.6-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
Fixed in 5.19.6-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 5.19.6-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.