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.
How to fix
- linux linux_kernel5.10.258, 5.15.209, 6.1.175, 6.6.141, 6.12.91, 6.18.33, 7.0.10 or later
- git.kernel.org/stable/c/0a04db240effd85773f66244645a28cedddb72d2
- git.kernel.org/stable/c/12bec2bd4b76d81c5d3996bd14ec1b7f4d983747
- git.kernel.org/stable/c/1f882c492d46f90bdb36f4936876c88c28dab21c
- git.kernel.org/stable/c/6a9f38d5ff11e00bc54baab752642978805e81eb
- git.kernel.org/stable/c/6def5fe753cbe5b279ee5fd10327b2611cbddaca
- git.kernel.org/stable/c/7254267799d083280c0e53effc101a33add95f7b
- git.kernel.org/stable/c/8042240412de3222d27b31e89d29336961cad9e4
- git.kernel.org/stable/c/e6aa481f21fc7a41ed344767ea25aae9d03fae71
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.9 ≤ v < 5.10.258, 5.11 ≤ v < 5.15.209, 5.16 ≤ v < 6.1.175, 6.2 ≤ v < 6.6.141, 6.7 ≤ v < 6.12.91, 6.13 ≤ v < 6.18.33, 6.19 ≤ v < 7.0.10 | 5.10.258, 5.15.209, 6.1.175, 6.6.141, 6.12.91, 6.18.33, 7.0.10 |
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