CVE-2024-40993: netfilter: ipset: Fix suspicious rcu_dereference_protected()
In the Linux kernel, the following vulnerability has been resolved:
netfilter: ipset: Fix suspicious rcudereferenceprotected()
When destroying all sets, we are either in pernet exit phase or are executing a "destroy all sets command" from userspace. The latter was taken into account in ipsetdereference() (nfnetlink mutex is held), but the former was not. The patch adds the required check to rcudereferenceprotected() in ipsetdereference().
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 6.1.99-1 - Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 6.9.7-1 - Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 6.1.176-1Fixed in 6.1.190-1Fixed in 6.12.107-1Fixed in 6.12.115-2Fixed in 7.2.12-1Fixed in 7.2.15-1
Event History
Frequently Asked Questions
What is the severity of CVE-2024-40993?
CVE-2024-40993 has been classified with a severity that could impact the integrity of the Linux kernel networking stack.
How do I fix CVE-2024-40993?
To fix CVE-2024-40993, update your Linux kernel to the latest version that addresses this vulnerability.
What systems are affected by CVE-2024-40993?
CVE-2024-40993 affects various distributions using the Linux kernel, particularly those utilizing the netfilter module.
Is CVE-2024-40993 actively exploited?
As of now, there is no evidence that CVE-2024-40993 is being actively exploited in the wild.
What components are involved in CVE-2024-40993?
CVE-2024-40993 involves the netfilter component of the Linux kernel, specifically related to ipset operations.