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CVE-2026-72351 Details

Description

In the Linux kernel, the following vulnerability has been resolved: gue: validate REMCSUM private option length GUE private flags can indicate that remote checksum offload metadata is present. The private flags field itself is accounted for by guehdr_flags_len(), but guehdr_priv_flags_len() currently returns 0 even when GUE_PFLAG_REMCSUM is set. This lets a packet with only the private flags field pass validate_gue_flags(), after which gue_remcsum() and gue_gro_remcsum() read the missing REMCSUM start/offset fields from the following bytes. Account for GUE_PLEN_REMCSUM when GUE_PFLAG_REMCSUM is present so that malformed packets are rejected during option validation.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: kernel.orgCVSS-B:9.8 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://git.kernel.org/stable/c/158b9995d3c87f3b93f5c22df54a12e12a3438b3	kernel.org
https://git.kernel.org/stable/c/2a99224c120823987e4d829726f4ecb33e03fc1e	kernel.org
https://git.kernel.org/stable/c/2c4de9988e9ddc760b750d6b6e701c35ff60ad14	kernel.org
https://git.kernel.org/stable/c/4a4a1d41c6e901e773bcf795f562a47fa71f692a	kernel.org
https://git.kernel.org/stable/c/61e78679c7c9ca685bff58e4b6348304dc60aafd	kernel.org
https://git.kernel.org/stable/c/7c6876ec1b227261b51803f784c7be1b2242a1a0	kernel.org
https://git.kernel.org/stable/c/d335dcc6f521571d57117b8deeebc940836e5450	kernel.org
https://git.kernel.org/stable/c/f618cbe9b24cd0202004d2db781d5f80ab77037f	kernel.org

see all 8 references

Weakness Enumeration

No weakness enumeration is available for this CVE.

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Aug 17, 2026	CVE Modified	kernel.org
Aug 15, 2026	New CVE Received	kernel.org