CVE-2023-3776

A use-after-free vulnerability in the Linux kernel's net/sched: cls_fw component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, fw_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability. We recommend upgrading past commit 0323bce598eea038714f941ce2b22541c46d488f.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.html	Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=0323bce598eea038714f941ce2b22541c46d488f	Mailing List Patch Vendor Advisory
https://kernel.dance/0323bce598eea038714f941ce2b22541c46d488f	Patch Vendor Advisory
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html	Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
https://security.netapp.com/advisory/ntap-20240202-0003/
https://www.debian.org/security/2023/dsa-5480	Third Party Advisory
https://www.debian.org/security/2023/dsa-5492	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.5:rc1::::::

Configuration 2 (hide)

OR	cpe:2.3:o:debian:debian_linux:10.0:::::::*
	cpe:2.3:o:debian:debian_linux:11.0:::::::*
	cpe:2.3:o:debian:debian_linux:12.0:::::::*

History

No history.

Information

Published : 2023-07-21 21:15

Updated : 2024-02-02 14:15

NVD link : CVE-2023-3776

Mitre link : CVE-2023-3776

CVE.ORG link : CVE-2023-3776

JSON object : View

Products Affected

debian

debian_linux

linux

linux_kernel

CWE

CWE-416

Use After Free

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