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CVE-2026-72296

CRITICALCVSS 9.1/10EPSS 0.21%

Last modified

CVE-2026-72296 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: net: ife: require ETH_HLEN to be pullable in ife_decode() ife decode may return after making only the outer IFE header and metadata pullable. The caller then passes the decapsulated packet to eth_type_trans(), which expects the inner Ethernet header to be accessible from the linear data area. With a malformed IFE frame, the inner Ethernet header may still be shorter than ETH_HLEN in the linear area, which can lead to a crash in the original code. Fix this by extending the pull check in ife_decode() so that the inner Ethernet header is also guaranteed to be pullable before returning.. EPSS estimates a 0.21% chance of exploitation in the next 30 days.

Description

In the Linux kernel, the following vulnerability has been resolved: net: ife: require ETH_HLEN to be pullable in ife_decode() ife decode may return after making only the outer IFE header and metadata pullable. The caller then passes the decapsulated packet to eth_type_trans(), which expects the inner Ethernet header to be accessible from the linear data area. With a malformed IFE frame, the inner Ethernet header may still be shorter than ETH_HLEN in the linear area, which can lead to a crash in the original code. Fix this by extending the pull check in ife_decode() so that the inner Ethernet header is also guaranteed to be pullable before returning.

Metrics

CVSS 3.1
9.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

EPSS Probability
0.21%

11.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= ef6980b6becb1afd9d82a4f043749a10ae81bf14, < 70013f9163bef7fbd9fa62f81cf91b2a7ba66163; >= ef6980b6becb1afd9d82a4f043749a10ae81bf14, < be272e159dfe1207b67332ad6e17adcf59b4ea4b; >= ef6980b6becb1afd9d82a4f043749a10ae81bf14, < 8c8818e52fddb247ff3214622401a4de6ff8482e; >= ef6980b6becb1afd9d82a4f043749a10ae81bf14, < 9433578bff9c100c466a6354574892e55293cb8f; >= ef6980b6becb1afd9d82a4f043749a10ae81bf14, < 1cb42ec10294a55380e52e674b3df2b962648242; >= ef6980b6becb1afd9d82a4f043749a10ae81bf14, < 5526d1997aea6c9bd865ca4d4894b52e799d735c; >= ef6980b6becb1afd9d82a4f043749a10ae81bf14, < b69ad768cd4a2ef4e07c18492ae85438ed17c7cb; >= ef6980b6becb1afd9d82a4f043749a10ae81bf14, < 9406f6012b7343661efb516a11c62d4db2b62f75
LinuxLinux4.6

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-72296?
In the Linux kernel, the following vulnerability has been resolved: net: ife: require ETH_HLEN to be pullable in ife_decode() ife decode may return after making only the outer IFE header and metadata pullable. The caller then passes the decapsulated packet to eth_type_trans(), which expects the inner Ethernet header to be accessible from the linear data area. With a malformed IFE frame, the inner Ethernet header may still be shorter than ETH_HLEN in the linear area, which can lead to a crash in the original code. Fix this by extending the pull check in ife_decode() so that the inner Ethernet header is also guaranteed to be pullable before returning.
How severe is CVE-2026-72296?
CVE-2026-72296 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.
How do I fix CVE-2026-72296?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST