CVE-2026-72296
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.
How to fix
- Linux Linux70013f9163bef7fbd9fa62f81cf91b2a7ba66163, be272e159dfe1207b67332ad6e17adcf59b4ea4b, 8c8818e52fddb247ff3214622401a4de6ff8482e, 9433578bff9c100c466a6354574892e55293cb8f, 1cb42ec10294a55380e52e674b3df2b962648242, 5526d1997aea6c9bd865ca4d4894b52e799d735c, b69ad768cd4a2ef4e07c18492ae85438ed17c7cb, 9406f6012b7343661efb516a11c62d4db2b62f75 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | ef6980b6becb1afd9d82a4f043749a10ae81bf14 ≤ v < 70013f9163bef7fbd9fa62f81cf91b2a7ba66163, ef6980b6becb1afd9d82a4f043749a10ae81bf14 ≤ v < be272e159dfe1207b67332ad6e17adcf59b4ea4b, ef6980b6becb1afd9d82a4f043749a10ae81bf14 ≤ v < 8c8818e52fddb247ff3214622401a4de6ff8482e, ef6980b6becb1afd9d82a4f043749a10ae81bf14 ≤ v < 9433578bff9c100c466a6354574892e55293cb8f, ef6980b6becb1afd9d82a4f043749a10ae81bf14 ≤ v < 1cb42ec10294a55380e52e674b3df2b962648242, ef6980b6becb1afd9d82a4f043749a10ae81bf14 ≤ v < 5526d1997aea6c9bd865ca4d4894b52e799d735c, ef6980b6becb1afd9d82a4f043749a10ae81bf14 ≤ v < b69ad768cd4a2ef4e07c18492ae85438ed17c7cb, ef6980b6becb1afd9d82a4f043749a10ae81bf14 ≤ v < 9406f6012b7343661efb516a11c62d4db2b62f75, 4.6 | 70013f9163bef7fbd9fa62f81cf91b2a7ba66163, be272e159dfe1207b67332ad6e17adcf59b4ea4b, 8c8818e52fddb247ff3214622401a4de6ff8482e, 9433578bff9c100c466a6354574892e55293cb8f, 1cb42ec10294a55380e52e674b3df2b962648242, 5526d1997aea6c9bd865ca4d4894b52e799d735c, b69ad768cd4a2ef4e07c18492ae85438ed17c7cb, 9406f6012b7343661efb516a11c62d4db2b62f75 |
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