CVE-2022-49048 ipv6: fix panic when forwarding a pkt with no in6 dev

What is CVE-2022-49048?

CVE-2022-49048 is a high-severity vulnerability in Linux kernel, published on 26 Feb 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In the Linux kernel, the following vulnerability has been resolved:

ipv6: fix panic when forwarding a pkt with no in6 dev

kongweibin reported a kernel panic in ip6_forward() when input interface has no in6 dev associated.

The following tc commands were used to reproduce this panic: tc qdisc del dev vxlan100 root tc qdisc add dev vxlan100 root netem corrupt 5%

Which versions are affected by CVE-2022-49048?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2022-49048?

Apply the vendor's patch.

Is CVE-2022-49048 being exploited?

There is no known exploitation of CVE-2022-49048 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2022-49048, GHSA-hv5h-q6gh-5q7w, UBUNTU-CVE-2022-49048.