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CVE-2023-6932

HIGHCVSS 7/10EPSS 0.37%

Last modified

CVE-2023-6932 is a high-severity vulnerability rated 7/10 on the CVSS scale. A use-after-free vulnerability in the Linux kernel's ipv4: igmp component can be exploited to achieve local privilege escalation. A race condition can be exploited to cause a timer be mistakenly registered on a RCU read locked object which is freed by another thread. We recommend upgrading past commit e2b706c691905fe78468c361aaabc719d0a496f1.. EPSS estimates a 0.37% chance of exploitation in the next 30 days.

Description

A use-after-free vulnerability in the Linux kernel's ipv4: igmp component can be exploited to achieve local privilege escalation. A race condition can be exploited to cause a timer be mistakenly registered on a RCU read locked object which is freed by another thread. We recommend upgrading past commit e2b706c691905fe78468c361aaabc719d0a496f1.

Metrics

CVSS 3.1
7/10

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

EPSS Probability
0.37%

28.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
DebianDebian Linux10.0
LinuxLinux Kernel< 4.14.332
LinuxLinux Kernel>= 4.15, < 4.19.301
LinuxLinux Kernel>= 4.20, < 5.4.263
LinuxLinux Kernel>= 5.5, < 5.10.203
LinuxLinux Kernel>= 5.11, < 5.15.142
LinuxLinux Kernel>= 5.16, < 6.1.66
LinuxLinux Kernel>= 6.2, < 6.6.5

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2023-6932?
A use-after-free vulnerability in the Linux kernel's ipv4: igmp component can be exploited to achieve local privilege escalation. A race condition can be exploited to cause a timer be mistakenly registered on a RCU read locked object which is freed by another thread. We recommend upgrading past commit e2b706c691905fe78468c361aaabc719d0a496f1.
How severe is CVE-2023-6932?
CVE-2023-6932 has a CVSS score of 7/10 (HIGH severity). The EPSS model estimates a 0.37% probability of exploitation in the next 30 days.
How do I fix CVE-2023-6932?
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-2023-6932?

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

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Source: NVD / NIST