CVE-2026-53074

bpf: reject short IPv4/IPv6 inputs in bpf_prog_test_run_skb

MEDIUM

5.5

CVSS Score

Published: June 24, 2026 at 04:30 PM UTC

Updated: July 21, 2026 at 06:26 PM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.1%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

5.11 ≤ v < 5.15.2095.16 ≤ v < 6.1.1755.9 ≤ v < 5.10.2585.9 ≤ v < 5.15.2095.9 ≤ v < 6.1.1755.9 ≤ v < 6.12.915.9 ≤ v < 6.18.335.9 ≤ v < 6.6.1415.9 ≤ v < 7.0.105.9 ≤ v < 7.16.13 ≤ v < 6.18.336.19 ≤ v < 7.0.106.2 ≤ v < 6.6.1416.7 ≤ v < 6.12.915.9fa5cb548ced61b9d3095f32f8a7e427a248c65ee

Vendor states this is fixed in 0a04db240effd85773f66244645a28cedddb72d2 (fixed)

Vendor states this is fixed in 12bec2bd4b76d81c5d3996bd14ec1b7f4d983747 (fixed)

Vendor states this is fixed in 1f882c492d46f90bdb36f4936876c88c28dab21c (fixed)

Vendor states this is fixed in 6a9f38d5ff11e00bc54baab752642978805e81eb (fixed)

Vendor states this is fixed in 6def5fe753cbe5b279ee5fd10327b2611cbddaca (fixed)

Vendor states this is fixed in 7254267799d083280c0e53effc101a33add95f7b (fixed)

Vendor states this is fixed in 8042240412de3222d27b31e89d29336961cad9e4 (fixed)

Vendor states this is fixed in e6aa481f21fc7a41ed344767ea25aae9d03fae71 (fixed)

Vendor states this is fixed in 5.10.258 (unaffected)

Vendor states this is fixed in 5.15.209 (unaffected)

Vendor states this is fixed in 5.9 (unaffected)

Vendor states this is fixed in 6.1.175 (unaffected)