CVE-2021-29650

Description

An issue was discovered in the Linux kernel before 5.11.11. The netfilter subsystem allows attackers to cause a denial of service (panic) because net/netfilter/x_tables.c and include/linux/netfilter/x_tables.h lack a full memory barrier upon the assignment of a new table value, aka CID-175e476b8cdf.

5.5

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.01%

Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory kernel.org Vendor Advisory kernel.org

Affected: n/a n/a

References

Link	Tags
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.11	mailing list patch vendor advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=175e476b8cdf2a4de7432583b49c871345e4f8a1	mailing list patch vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WKRNELXLVFDY6Y5XDMWLIH3VKIMQXLLR/	vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RZGMUP6QEHJJEKPMLKOSPWYMW7PXFC2M/	vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VTADK5ELGTATGW2RK3K5MBJ2WGYCPZCM/	vendor advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html	third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html	third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2021-29650?: CVE-2021-29650 has been scored as a medium severity vulnerability.
How to fix CVE-2021-29650?: To fix CVE-2021-29650, 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-2021-29650 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-29650 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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