Home/CVE/A use after free vulnerability was found in prepare_to_relocate in fs/btrfs/relocation.c in btrfs in the Linux Kernel. T
CVE

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. T

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 calling btrfs_ioctl_defrag().

HIGH · CVSS 7.8 EPSS 0.00014
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-416Use After Free
CWE-416Use After Free
▤

Affected Products & Versions

12
linux kernel>= 2.6.31 and < 4.14.318
linux kernel>= 4.15 and < 4.19.286
linux kernel>= 4.20 and < 5.4.247
linux kernel>= 5.5 and < 5.10.184
linux kernel>= 5.11 and < 5.15.63
linux kernel>= 5.16 and < 5.19.4
debian linuxall versions
netapp h300s firmwareall versions
▣

Scoring & Timeline

7.8
HIGH · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD05 Jun 2023 · 09:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

30
suse-csafSUSE-SU-2025:02537-1
suse-csafSUSE-SU-2025:02334-1
suse-csafSUSE-SU-2025:02312-1
suse-csafSUSE-SU-2025:02320-1
suse-csafSUSE-SU-2025:02321-1
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://lists.debian.org/debian-lts-announce/2023/07/msg00030.htmlMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.htmlMailing ListThird Party Advisory
https://patchwork.kernel.org/project/linux-btrfs/patch/20220721074829.2905233-1-r33s3n6%40gmail.com/
https://security.netapp.com/advisory/ntap-20230703-0007/Third Party Advisory
https://www.debian.org/security/2023/dsa-5480Third Party AdvisoryVDB Entry
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