Use After Free in Linux Kernel
CVE-2023-1476
A use-after-free flaw was found in the Linux kernel’s mm/mremap memory address space accounting source code. This issue occurs due to a race condition between rmap walk and mremap, allowing a local user to crash the system or potentially escalate their privileges on the system.
Vulnerability class: Use-After-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: 0.002 (12.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 12.7% 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 8
- Red Hat Enterprise Linux — versions 8.0
- Red Hat Enterprise Linux Eus — versions 8.8
- Red Hat Enterprise Linux For Power Little Endian — versions 8.0_ppc64le
- Red Hat Enterprise Linux For Power Little Endian Eus — versions 8.8_ppc64le
- Red Hat Enterprise Linux Server Tus — versions 8.8
Weakness classification (CWE)
Public proof-of-concept exploits
References
- access.redhat.com/errata/RHSA-2023:1659 (vendor-advisory, Third Party Advisory)
- access.redhat.com/security/cve/CVE-2023-1476 (Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Issue Tracking)
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Mailing List)
Frequently asked questions
- What is CVE-2023-1476?
- CVE-2023-1476 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.0/10. Published 2023-11-03.
- How severe is CVE-2023-1476?
- High severity. CVSS v3 base score is 7.0 out of 10.
- Is CVE-2023-1476 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.