Use After Free in Linux Kernel
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 size for extended attributes. This flaw could allow a privileged local user to cause a system crash or other undefined behaviors.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (13.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 13.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Linux Kernel
- Red Hat Enterprise Linux — versions 6.0, 7.0, 8.0
- Linux Kernel Ext4 Filesystem — versions Fixed in kernel 6.0-rc1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lore.kernel.org/all/20220616021358.2504451-1-libaokun1@huawei.com/
- github.com/torvalds/linux/commit/67d7d8ad99be (Patch)
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2023-2513?
- CVE-2023-2513 is a medium-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 6.7/10. Published 2023-05-08.
- How severe is CVE-2023-2513?
- Medium severity. CVSS v3 base score is 6.7 out of 10.
- Is CVE-2023-2513 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.