Use After Free in Linux Kernel
CVE-2024-0562
A use-after-free flaw was found in the Linux Kernel. When a disk is removed, bdi_unregister is called to stop further write-back and waits for associated delayed work to complete. However, wb_inode_writeback_end() may schedule bandwidth estimation work after this has completed, which can result in the timer attempting to access the recently freed bdi_writeback.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (15.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 15.4% 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
- Linux Kernel — versions 6.0
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 8.6 Extended Update Support — versions 0:4.18.0-372.87.1.el8_6
- Red Hat Enterprise Linux 9
- Red Hat Virtualization 4 For Enterprise Linux 8 — versions 0:4.18.0-372.87.1.el8_6
- Red Hat Enterprise Linux — versions 8.0, 9.0
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2024:0412 (vendor-advisory, Third Party Advisory)
- access.redhat.com/security/cve/CVE-2024-0562 (Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Third Party Advisory, Issue Tracking)
- patchwork.kernel.org/project/linux-mm/patch/20220801155034.3772543-1-khazhy@goo… (Patch, Mailing List)
Frequently asked questions
- What is CVE-2024-0562?
- CVE-2024-0562 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.8/10. Published 2024-01-15.
- How severe is CVE-2024-0562?
- High severity. CVSS v3 base score is 7.8 out of 10.