SB2026081677 - Improper input validation in Linux kernel ife

Description

This security bulletin contains information about 1 vulnerability.

1) Improper input validation (CVE-ID: CVE-2026-72296)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to improper input validation in ife_decode() when processing malformed IFE frames. A remote attacker can send a specially crafted packet to cause a denial of service.

The issue can crash the kernel when the inner Ethernet header is not sufficiently accessible from the linear data area before the packet is passed to eth_type_trans().

Remediation

Install update from vendor's website.

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
• https://git.kernel.org/stable/c/9433578bff9c100c466a6354574892e55293cb8f
• https://git.kernel.org/stable/c/b69ad768cd4a2ef4e07c18492ae85438ed17c7cb
• https://git.kernel.org/stable/c/be272e159dfe1207b67332ad6e17adcf59b4ea4b