01 Record

CVE-2026-74668

packet: use consistent hard_header_len in TX_RING send path

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

packet: use consistent hard_header_len in TX_RING send path

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

0.12% 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 15:32Z2 MO AGO

Last updated

2026-10-16 19:16Z12 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-131Incorrect Calculation of Buffer SizeBase
CWE-787Out-of-bounds WriteBase

Data version

5.2

Document digest

6d6236c8bb2360637915843381871f13b40e8804a8748ec5d1248bf57ed1ae11

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1 to < 9c7e8ff48c377bef18c3d178748aea0575b69ede, 69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1 to < 2a73b2c37ee3060a880b53cd24783d93fc7be5f8, 69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1 to < e79f59a8527a49078cfaf8fe8fb5fcefc20c76d2, 69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1 to < d85d2fd54e901637c81d847811e03c662aee13cd, 69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1 to < 016763e829cac37b3234eace86fd0a4c560de4a7, 69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1 to < 27e068d1b35dbec10a3cf268887c94407be4badc, 69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1 to < d48ea5c9c4c34dc0df621f0e39ed3a16b644621a, 69e3c75f4d541a6eb151b3ef91f34033cb3ad6e1 to < 21b5953e7494c16a42e6cd8cf110e18d13ae4a6b, 2.6.31—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/9c7e8ff48c377bef18c3d178748aea0575b69ede
git.kernel.orghttps://git.kernel.org/stable/c/2a73b2c37ee3060a880b53cd24783d93fc7be5f8
git.kernel.orghttps://git.kernel.org/stable/c/e79f59a8527a49078cfaf8fe8fb5fcefc20c76d2
git.kernel.orghttps://git.kernel.org/stable/c/d85d2fd54e901637c81d847811e03c662aee13cd
git.kernel.orghttps://git.kernel.org/stable/c/016763e829cac37b3234eace86fd0a4c560de4a7
git.kernel.orghttps://git.kernel.org/stable/c/27e068d1b35dbec10a3cf268887c94407be4badc
git.kernel.orghttps://git.kernel.org/stable/c/d48ea5c9c4c34dc0df621f0e39ed3a16b644621a
git.kernel.orghttps://git.kernel.org/stable/c/21b5953e7494c16a42e6cd8cf110e18d13ae4a6b

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.