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CVE-2023-3567

HIGHCVSS 7.1/10EPSS 0.45%

Last modified

CVE-2023-3567 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. 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.. EPSS estimates a 0.45% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
7.1/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

EPSS Probability
0.45%

35.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
LinuxLinux Kernel< 6.2.0—
LinuxLinux Kernel6.2.0Rc1
RedhatEnterprise Linux8.0—
RedhatEnterprise Linux9.0—
CanonicalUbuntu Linux14.04—
CanonicalUbuntu Linux16.04—
CanonicalUbuntu Linux18.04—
CanonicalUbuntu Linux20.04—
CanonicalUbuntu Linux22.04—

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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.
How severe is CVE-2023-3567?
CVE-2023-3567 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 0.45% probability of exploitation in the next 30 days.
How do I fix CVE-2023-3567?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-3567?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST