Double Free in Linux Kernel
CVE-2023-4389
A flaw was found in btrfs_get_root_ref in fs/btrfs/disk-io.c in the btrfs filesystem in the Linux Kernel due to a double decrement of the reference count. This issue may allow a local attacker with user privilege to crash the system or may lead to leaked internal kernel information.
Vulnerability class: Double Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (15.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 15.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2023-4389 (Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Third Party Advisory, Issue Tracking)
- patchwork.kernel.org/project/linux-btrfs/patch/20220324134454.15192-1-baijiaju1… (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2023-4389?
- CVE-2023-4389 is a high-severity vulnerability in Linux Kernel, classified under Double Free. CVSS score: 7.0/10. Published 2023-08-16.
- How severe is CVE-2023-4389?
- High severity. CVSS v3 base score is 7.0 out of 10.