CVE-2026-53074

CVE-2026-53074: vulnerability in Linux

bpf: reject short IPv4/IPv6 inputs in bpf_prog_test_run_skb

Published

3Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackepss 0.2%
exploitation probability
0.2%top 95% of all CVEs
observed exploitation
nono source reports it
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.
Affected products
Linux · Linux
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References
https://git.kernel.org/stable/c/0a04db240effd85773f66244645a28cedddb72d2https://git.kernel.org/stable/c/12bec2bd4b76d81c5d3996bd14ec1b7f4d983747https://git.kernel.org/stable/c/1f882c492d46f90bdb36f4936876c88c28dab21chttps://git.kernel.org/stable/c/6a9f38d5ff11e00bc54baab752642978805e81ebhttps://git.kernel.org/stable/c/6def5fe753cbe5b279ee5fd10327b2611cbddacahttps://git.kernel.org/stable/c/7254267799d083280c0e53effc101a33add95f7bhttps://git.kernel.org/stable/c/8042240412de3222d27b31e89d29336961cad9e4https://git.kernel.org/stable/c/e6aa481f21fc7a41ed344767ea25aae9d03fae71