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CVE-2023-3567

21
FAUCET Score

CVE-2023-3567 is a use-after-free vulnerability in the Linux Kernel's vc_screen component, affecting various distributions including Canonical, Red Hat, and generic Linux. This flaw allows a local attacker to trigger a system crash or leak sensitive kernel information. Rated High with a CVSS score of 7.1, it requires local user access but has low attack complexity. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 6.2.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
6.2.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.2.0:rc1:*:*:*:*:*:*
6.2.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.2.0:rc2:*:*:*:*:*:*
6.2.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.2.0:rc3:*:*:*:*:*:*
6.2.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.2.0:rc4:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.1HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.42%
Probability of exploitation in next 30 days
EPSS Percentile
34.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0042 is in the 74th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (15)

microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 x64Fixed in: 5.15.126.1-1
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 ARMFixed in: 5.15.126.1-1
microsoftpatch availablevia msrc
Product: 17832-16823Fixed in: 5.15.126.1-1
microsoftpatch availablevia msrc
Product: cbl2 kernel 5.15.126.1-1 on CBL Mariner 2.0Fixed in: 5.15.126.1-1
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-rt-0:4.18.0-553.rt7.342.el8_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-0:4.18.0-553.el8_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Extended Update SupportFixed in: kernel-0:4.18.0-372.87.1.el8_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.8 Extended Update SupportFixed in: kernel-0:4.18.0-477.43.1.el8_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-0:5.14.0-427.13.1.el9_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.0 Extended Update SupportFixed in: kernel-0:5.14.0-70.85.1.el9_0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.0 Extended Update SupportFixed in: kernel-rt-0:5.14.0-70.85.1.rt21.156.el9_0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.2 Extended Update SupportFixed in: kernel-0:5.14.0-284.48.1.el9_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.2 Extended Update SupportFixed in: kernel-rt-0:5.14.0-284.48.1.rt14.333.el9_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Virtualization 4 for Red Hat Enterprise Linux 8Fixed in: kernel-0:4.18.0-372.87.1.el8_6
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt

Vendor Advisories (3)

microsoft2023-Aug/CVE-2023-3567

CVE-2023-3567

Aug 8, 2023
microsoft2023-Jul/CVE-2023-3567Important

Kernel: use after free in vcs_read in drivers/tty/vt/vc_screen.c due to race

Jul 11, 2023
redhatCVE-2023-3567Moderate

kernel: use after free in vcs_read in drivers/tty/vt/vc_screen.c due to race

Jan 14, 2023

References

packetstormsecurity.com / files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.html
packetstormsecurity.com / files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html
access.redhat.com / errata/RHSA-2024:0412
access.redhat.com / errata/RHSA-2024:0431
access.redhat.com / errata/RHSA-2024:0432
access.redhat.com / errata/RHSA-2024:0439
access.redhat.com / errata/RHSA-2024:0448
access.redhat.com / errata/RHSA-2024:0575
access.redhat.com / errata/RHSA-2024:2394
access.redhat.com / errata/RHSA-2024:2950
access.redhat.com / errata/RHSA-2024:3138
access.redhat.com / security/cve/CVE-2023-3567
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
spinics.net / lists/stable-commits/msg285184.html
Mailing ListPatch