01 Record

CVE-2026-74701

net/openvswitch: check Ethernet header length in key_extract()

HighPUBLISHEDCNA: Linux

CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

View raw JSON

02 Description

net/openvswitch: check Ethernet header length in key_extract()

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.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
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

0.13% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 2.1% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/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

2026-08-22 15:33Z2 MO AGO

Last updated

2026-10-16 19:16Z13 DAYS AGO

Reserved

2026-08-15

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

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

Weaknesses

CWE-125Out-of-bounds ReadBase

Data version

5.2

Document digest

bb7471df409aec9230a12c0fda5d8cdf596dd96d0605795ea28f28684e67c262

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux217ac77a3c2524d999730b2a80b61fcc2d0f734a to < e85278afd4890dd190ba3c7a1b1a712b801c9fe1, 217ac77a3c2524d999730b2a80b61fcc2d0f734a to < 81f9b09f0ea3ba9ab966dd17e9f32625a14555e9, 217ac77a3c2524d999730b2a80b61fcc2d0f734a to < 831471718f6e19aed1a330b03b53190a90e06466, 217ac77a3c2524d999730b2a80b61fcc2d0f734a to < d8bea341b183190ce6c055ab0e64ab78eb9a7290, 217ac77a3c2524d999730b2a80b61fcc2d0f734a to < 0b60b55652ba772b173dddc63f3851e1d2dd5927, 217ac77a3c2524d999730b2a80b61fcc2d0f734a to < a8139285c8925efe59af28a9169bb2fda91bff15, 217ac77a3c2524d999730b2a80b61fcc2d0f734a to < 9b8cfbb58b85bfa7a78fac47fdc77396cd01f699, 217ac77a3c2524d999730b2a80b61fcc2d0f734a to < cf6f8b29befb92173659bcef6a441d274947bfae, 4.10—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/e85278afd4890dd190ba3c7a1b1a712b801c9fe1
git.kernel.orghttps://git.kernel.org/stable/c/81f9b09f0ea3ba9ab966dd17e9f32625a14555e9
git.kernel.orghttps://git.kernel.org/stable/c/831471718f6e19aed1a330b03b53190a90e06466
git.kernel.orghttps://git.kernel.org/stable/c/d8bea341b183190ce6c055ab0e64ab78eb9a7290
git.kernel.orghttps://git.kernel.org/stable/c/0b60b55652ba772b173dddc63f3851e1d2dd5927
git.kernel.orghttps://git.kernel.org/stable/c/a8139285c8925efe59af28a9169bb2fda91bff15
git.kernel.orghttps://git.kernel.org/stable/c/9b8cfbb58b85bfa7a78fac47fdc77396cd01f699
git.kernel.orghttps://git.kernel.org/stable/c/cf6f8b29befb92173659bcef6a441d274947bfae

07 Fixed in

Debian 12

linux
Fixed in 6.1.187-1
linux-6.12
Fixed in 6.12.107-1~deb12u1

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

Debian 13

linux
Fixed in 6.12.105-1

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

Debian 14

linux
Fixed in 7.1.9-1

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