by Kastro
Paper/Archive/CVE-2026-72296

CVE-2026-72296

Linux Linux — net: ife: require ETH_HLEN to be pullable in ife_decode()

EPSS 0.7%CVSS 9.1
critical.is priorityof 100
38
CVSS 9.1 (CNA)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 54.3.543 × 2010.9No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Linuxef6980b6becb1afd9d82a4f043749a10ae81bf14 – < 70013f9163bef7fbd9fa62f81cf91b2a7ba6616370013f9163bef7fbd9fa62f81cf91b2a7ba66163CNA
Linuxef6980b6becb1afd9d82a4f043749a10ae81bf14 – < be272e159dfe1207b67332ad6e17adcf59b4ea4bbe272e159dfe1207b67332ad6e17adcf59b4ea4bCNA
Linuxef6980b6becb1afd9d82a4f043749a10ae81bf14 – < 8c8818e52fddb247ff3214622401a4de6ff8482e8c8818e52fddb247ff3214622401a4de6ff8482eCNA
Linuxef6980b6becb1afd9d82a4f043749a10ae81bf14 – < 9433578bff9c100c466a6354574892e55293cb8f9433578bff9c100c466a6354574892e55293cb8fCNA
Linuxef6980b6becb1afd9d82a4f043749a10ae81bf14 – < 1cb42ec10294a55380e52e674b3df2b9626482421cb42ec10294a55380e52e674b3df2b962648242CNA
Linuxef6980b6becb1afd9d82a4f043749a10ae81bf14 – < 5526d1997aea6c9bd865ca4d4894b52e799d735c5526d1997aea6c9bd865ca4d4894b52e799d735cCNA
Linuxef6980b6becb1afd9d82a4f043749a10ae81bf14 – < b69ad768cd4a2ef4e07c18492ae85438ed17c7cbb69ad768cd4a2ef4e07c18492ae85438ed17c7cbCNA
Linuxef6980b6becb1afd9d82a4f043749a10ae81bf14 – < 9406f6012b7343661efb516a11c62d4db2b62f759406f6012b7343661efb516a11c62d4db2b62f75CNA
Linux4.6–CNA

Scores by source

Linux (CNA)9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial

References

refgit.kernel.org/stable/c/70013f9163bef7fbd9fa62f81cf91b2a7ba66163refgit.kernel.org/stable/c/be272e159dfe1207b67332ad6e17adcf59b4ea4brefgit.kernel.org/stable/c/8c8818e52fddb247ff3214622401a4de6ff8482erefgit.kernel.org/stable/c/9433578bff9c100c466a6354574892e55293cb8frefgit.kernel.org/stable/c/1cb42ec10294a55380e52e674b3df2b962648242refgit.kernel.org/stable/c/5526d1997aea6c9bd865ca4d4894b52e799d735crefgit.kernel.org/stable/c/b69ad768cd4a2ef4e07c18492ae85438ed17c7cbrefgit.kernel.org/stable/c/9406f6012b7343661efb516a11c62d4db2b62f75