Vulnerability in Linux Kernel
CVE-2023-4732
A flaw was found in pfn_swap_entry_to_page in memory management subsystem in the Linux Kernel. In this flaw, an attacker with a local user privilege may cause a denial of service problem due to a BUG statement referencing pmd_t x.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.002 (7.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 7.4% 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 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8 — versions 0:4.18.0-513.5.1.rt7.307.el8_9, 0:4.18.0-513.5.1.el8_9
- Red Hat Enterprise Linux 8.6 Extended Update Support — versions 0:4.18.0-372.87.1.el8_6
- Red Hat Enterprise Linux 8.8 Extended Update Support — versions 0:4.18.0-477.36.1.el8_8
- 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 Codeready Linux Builder — versions 8.0
- Red Hat Codeready Linux Builder For Arm64 — versions 8.0_aarch64
Weakness classification (CWE)
Public proof-of-concept exploits
References
- access.redhat.com/errata/RHSA-2023:6901 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2023:7077 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2023:7539 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2024:0412 (vendor-advisory)
- access.redhat.com/security/cve/CVE-2023-4732 (Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2023-4732?
- CVE-2023-4732 is a medium-severity vulnerability in Linux Kernel, classified under Race Condition within a Thread. CVSS score: 4.7/10. Published 2023-10-03.
- How severe is CVE-2023-4732?
- Medium severity. CVSS v3 base score is 4.7 out of 10.
- Is CVE-2023-4732 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.