Medium 5.5Published Jun 24, 2026

CVE-2026-53074bpf: reject short IPv4/IPv6 inputs in bpf_prog_test_run_skb

Updated under an hour ago (Oct 28, 2026, 6:23 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: Jun 24, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from fa5cb548ced61b9d3095f32f8a7e427a248c65ee before 7254267799d083280c0e53effc101a33add95f7b; from fa5cb548ced61b9d3095f32f8a7e427a248c65ee before 6a9f38d5ff11e00bc54baab752642978805e81eb; from fa5cb548ced61b9d3095f32f8a7e427a248c65ee before e6aa481f21fc7a41ed344767ea25aae9d03fae71; from fa5cb548ced61b9d3095f32f8a7e427a248c65ee before 0a04db240effd85773f66244645a28cedddb72d2; from fa5cb548ced61b9d3095f32f8a7e427a248c65ee before 1f882c492d46f90bdb36f4936876c88c28dab21c; from fa5cb548ced61b9d3095f32f8a7e427a248c65ee before 8042240412de3222d27b31e89d29336961cad9e4; from fa5cb548ced61b9d3095f32f8a7e427a248c65ee before 6def5fe753cbe5b279ee5fd10327b2611cbddaca; from fa5cb548ced61b9d3095f32f8a7e427a248c65ee before 12bec2bd4b76d81c5d3996bd14ec1b7f4d983747	CNA record
linux linux_kernel linux:linux_kernel	from 5.9 before 5.10.258; from 5.11 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.141; from 6.7 before 6.12.91; from 6.13 before 6.18.33; from 6.19 before 7.0.10	NVD

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.