CVE-2022-36946

Description

nfqnl_mangle in net/netfilter/nfnetlink_queue.c in the Linux kernel through 5.18.14 allows remote attackers to cause a denial of service (panic) because, in the case of an nf_queue verdict with a one-byte nfta_payload attribute, an skb_pull can encounter a negative skb->len.

7.5

CVSS

Severity: High

CVSS 3.1 •

EPSS 4.81% Top 15%

Vendor Advisory debian.org

Affected: n/a n/a

References

Link	Tags
https://marc.info/?l=netfilter-devel&m=165883202007292&w=2	mailing list third party advisory patch
https://www.debian.org/security/2022/dsa-5207	third party advisory vendor advisory
https://security.netapp.com/advisory/ntap-20220901-0007/	third party advisory
https://lists.debian.org/debian-lts-announce/2022/09/msg00011.html	third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html	third party advisory mailing list
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=99a63d36cb3ed5ca3aa6fcb64cffbeaf3b0fb164

Frequently Asked Questions

What is the severity of CVE-2022-36946?: CVE-2022-36946 has been scored as a high severity vulnerability.
How to fix CVE-2022-36946?: To fix CVE-2022-36946, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-36946 being actively exploited in the wild?: It is possible that CVE-2022-36946 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~5% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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