01 Record

CVE-2026-74406

vxlan: Fix potential null-ptr-deref in vxlan_gro_prepare_receive().

CriticalPUBLISHEDCNA: Linux

CNA base score9.8 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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02 Description

vxlan: Fix potential null-ptr-deref in vxlan_gro_prepare_receive().

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.49% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 41.9% of scored records. A rank, not a probability.

NVD base score

9.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Received. NVD last modified this record on 2026-10-16.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2026-08-15 05:59Z2 MO AGO

Last updated

2026-10-16 19:05Z12 DAYS AGO

Reserved

2026-08-15

Assigning CNA

Linux

Record state

PUBLISHED

Severity

Critical (CVSS 9.8)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-476NULL Pointer DereferenceBase

Data version

5.2

Document digest

6f49132848ea108be5805065980af8aefe47b4d281fb4c2807227ce2d6528337

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux5602c48cf87562c2f95b831d690631935e834295 to < 9c58c729d32e7cea5772cc44929c6cd61e5a31cd, 5602c48cf87562c2f95b831d690631935e834295 to < f79c80f173fda9545b220c1f094b65fc06c252d0, 5602c48cf87562c2f95b831d690631935e834295 to < 08f40c0d23c67c3aa4224c3311e134999c721fb4, 5602c48cf87562c2f95b831d690631935e834295 to < 4a8cde6f7281ea2c4c290f9ad9923b3631defceb, 5602c48cf87562c2f95b831d690631935e834295 to < ef44dac2a37f86eeae6b88ed10a6d60b35387dfd, 5602c48cf87562c2f95b831d690631935e834295 to < 30a45c0bffdd62350261e2f2689fdba426a33578, 4.7—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/9c58c729d32e7cea5772cc44929c6cd61e5a31cd
git.kernel.orghttps://git.kernel.org/stable/c/f79c80f173fda9545b220c1f094b65fc06c252d0
git.kernel.orghttps://git.kernel.org/stable/c/08f40c0d23c67c3aa4224c3311e134999c721fb4
git.kernel.orghttps://git.kernel.org/stable/c/4a8cde6f7281ea2c4c290f9ad9923b3631defceb
git.kernel.orghttps://git.kernel.org/stable/c/ef44dac2a37f86eeae6b88ed10a6d60b35387dfd
git.kernel.orghttps://git.kernel.org/stable/c/30a45c0bffdd62350261e2f2689fdba426a33578

07 Fixed in

Debian 12

linux
Fixed in 6.1.180-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
Fixed in 6.12.100-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 7.1.5-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.