Use After Free in Linux Kernel
CVE-2023-3567
A use-after-free flaw was found in vcs_read in drivers/tty/vt/vc_screen.c in vc_screen in the Linux Kernel. This issue may allow an attacker with local user access to cause a system crash or leak internal kernel information.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (33.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 33.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Linux Kernel — versions 6.2.0
- Canonical Ubuntu Linux — versions 14.04, 16.04, 18.04
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8 — versions 0:4.18.0-553.rt7.342.el8_10, 0:4.18.0-553.el8_10
- 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 0:4.18.0-477.43.1.el8_8
- Red Hat Enterprise Linux 9 — versions 0:5.14.0-427.13.1.el9_4
- Red Hat Enterprise Linux 9.0 Extended Update Support — versions 0:5.14.0-70.85.1.el9_0, 0:5.14.0-70.85.1.rt21.156.el9_0
- Red Hat Enterprise Linux 9.2 Extended Update Support — versions 0:5.14.0-284.48.1.el9_2, 0:5.14.0-284.48.1.rt14.333.el9_2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- access.redhat.com/errata/RHSA-2024:0412 (vendor-advisory)
- access.redhat.com/errata/RHSA-2024:0431 (vendor-advisory)
- access.redhat.com/errata/RHSA-2024:0432 (vendor-advisory)
- access.redhat.com/errata/RHSA-2024:0439 (vendor-advisory)
- access.redhat.com/errata/RHSA-2024:0448 (vendor-advisory)
- access.redhat.com/errata/RHSA-2024:0575 (vendor-advisory)
- access.redhat.com/errata/RHSA-2024:2394 (vendor-advisory)
- access.redhat.com/errata/RHSA-2024:2950 (vendor-advisory)
- access.redhat.com/errata/RHSA-2024:3138 (vendor-advisory)
- access.redhat.com/security/cve/CVE-2023-3567 (Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2023-3567?
- CVE-2023-3567 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.1/10. Published 2023-07-24.
- How severe is CVE-2023-3567?
- High severity. CVSS v3 base score is 7.1 out of 10.
- Is CVE-2023-3567 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.