Home/CVE/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 m
CVE

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 m

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.

HIGH · CVSS 7.1 EPSS 8e-05
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-416Use After Free
CWE-416Use After Free
▤

Affected Products & Versions

4
linux kernel< 6.2.0
linux kernelall versions
redhat enterprise linuxall versions
canonical ubuntu linuxall versions
⚠

Public Exploits & PoCs

2
pocpacketstormsecurity.com · Kernel-Live-Patch-Security-Notice-LSN-0098-1.htmlpacketstormsecurity.com
pocpacketstormsecurity.com · Kernel-Live-Patch-Security-Notice-LSN-0099-1.htmlpacketstormsecurity.com
▣

Scoring & Timeline

7.1
HIGH · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD24 Jul 2023 · 04:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
⚑

Vendor Advisories

30
rhsaRHSA-2024:2394Low
rhsaRHSA-2024:3138Moderate
rhsaRHSA-2024:0448Low
rhsaRHSA-2024:0439Low
rhsaRHSA-2024:0575Moderate
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://access.redhat.com/security/cve/CVE-2023-3567Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2221463Issue TrackingThird Party Advisory
https://www.spinics.net/lists/stable-commits/msg285184.htmlMailing ListPatch
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