Home/CVE/A use-after-free vulnerability was found in the Linux kernel's ext4 filesystem in the way it handled the extra inode siz
CVE

CVE-2023-2513

A use-after-free vulnerability was found in the Linux kernel's ext4 filesystem in the way it handled the extra inode siz

A use-after-free vulnerability was found in the Linux kernel's ext4 filesystem in the way it handled the extra inode size for extended attributes. This flaw could allow a privileged local user to cause a system crash or other undefined behaviors.

MEDIUM · CVSS 6.7 EPSS 0.00017
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

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

Affected Products & Versions

2
linux kernel<= 5.19
redhat enterprise linuxall versions
▣

Scoring & Timeline

6.7
MEDIUM · 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 NVD08 May 2023 · 09:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:H/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

27
rhsaRHSA-2023:7077Moderate
rhsaRHSA-2023:2458Moderate
rhsaRHSA-2025:15670Moderate
rhsaRHSA-2025:15658Moderate
rhsaRHSA-2025:15656Moderate
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://bugzilla.redhat.com/show_bug.cgi?id=2193097Issue TrackingThird Party Advisory
https://github.com/torvalds/linux/commit/67d7d8ad99bePatch
https://lore.kernel.org/all/20220616021358.2504451-1-libaokun1%40huawei.com/
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