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.

References

• https://git.kernel.org/stable/c/1cb42ec10294a55380e52e674b3df2b962648242
• https://git.kernel.org/stable/c/5526d1997aea6c9bd865ca4d4894b52e799d735c
• https://git.kernel.org/stable/c/70013f9163bef7fbd9fa62f81cf91b2a7ba66163
• https://git.kernel.org/stable/c/8c8818e52fddb247ff3214622401a4de6ff8482e
• https://git.kernel.org/stable/c/9406f6012b7343661efb516a11c62d4db2b62f75