CVE-2026-53074

Description

In the Linux kernel, the following vulnerability has been resolved: bpf: reject short IPv4/IPv6 inputs in bpf_prog_test_run_skb bpf_prog_test_run_skb() calls eth_type_trans() first and then uses skb->protocol to initialize sk family and address fields for the test run. For IPv4 and IPv6 packets, it may access ip_hdr(skb) or ipv6_hdr(skb) even when the provided test input only contains an Ethernet header. Reject the input earlier if the Ethernet frame carries IPv4/IPv6 EtherType but the L3 header is too short. Fold the IPv4/IPv6 header length checks into the existing protocol switch and return -EINVAL before accessing the network headers.

EPSS — Exploit Prediction

0.0016

Probability of exploitation

0.06%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://git.kernel.org/stable/c/0a04db240effd85773f66244645a28cedddb72d2 https://git.kernel.org/stable/c/12bec2bd4b76d81c5d3996bd14ec1b7f4d983747 https://git.kernel.org/stable/c/1f882c492d46f90bdb36f4936876c88c28dab21c https://git.kernel.org/stable/c/6a9f38d5ff11e00bc54baab752642978805e81eb https://git.kernel.org/stable/c/6def5fe753cbe5b279ee5fd10327b2611cbddaca https://git.kernel.org/stable/c/7254267799d083280c0e53effc101a33add95f7b https://git.kernel.org/stable/c/8042240412de3222d27b31e89d29336961cad9e4 https://git.kernel.org/stable/c/e6aa481f21fc7a41ed344767ea25aae9d03fae71

Frequently Asked Questions

What is CVE-2026-53074? +

In the Linux kernel, the following vulnerability has been resolved: bpf: reject short IPv4/IPv6 inputs in bpf_prog_test_run_skb bpf_prog_test_run_skb() calls eth_type_trans() first and then uses skb->protocol to initialize sk family and address fields for the test run. For IPv4 and IPv6 packets, it may access ip_hdr(skb) or ipv6_hdr(skb) even when the provided test input only contains an Ethernet header. Reject the input earlier if the Ethernet frame carries IPv4/IPv6 EtherType but the L3 header is too short. Fold the IPv4/IPv6 header length checks into the existing protocol switch and return -EINVAL before accessing the network headers.

How do I check if I'm vulnerable to CVE-2026-53074? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Description

EPSS — Exploit Prediction

References

Other References

Frequently Asked Questions

Don't wait for an exploit