What is CVE-2026-74705?

CVE-2026-74705 is a Critical severity Linux kernel vulnerability with a CVSS score of 10.0 out of 10, affecting Linux kernel versions from 4.6 onward and patched in 5.10.265, 5.15.216, 6.1.183 and others. CVE-2026-74705 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-74705?

CVE-2026-74705 has a CVSS score of 10.0 out of 10, rated Critical severity. The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

Is there a patch available for CVE-2026-74705?

Yes, CVE-2026-74705 has been patched. Fixed versions include 5.10.265, 5.15.216, 6.1.183 and others. If you are running Linux kernel 4.6 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-74705 actively exploited?

CVE-2026-74705 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-74705

Critical

In the Linux kernel, the following vulnerability has been resolved: udp: fix potential use-after-free in tunnel segmentation __skb_udp_tunnel_segment() gets the UDP header before ensuring the tunnel header is in the skb head. If the pull reallocates skb->head, the saved UDP header pointer is no longer valid. Get the UDP header after the pull to avoid a potential use-after-free.

Package Linux Kernel

Published 2026-08-22

Last modified 2026-08-25

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

10.0

out of 10

Critical

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Affected versions

Linux kernel versions 4.6 and later are affected. Fixed in 5.10.265, 5.15.216, 6.1.183, 6.6.152, 6.12.104, 6.18.45, 7.1.9, 7.2 and their respective stable series.

Affected from

≥ 4.6

Fixed in

✓ 5.10.265 5.10.x ✓ 5.15.216 5.15.x ✓ 6.1.183 6.1.x ✓ 6.6.152 6.6.x ✓ 6.12.104 6.12.x ✓ 6.18.45 6.18.x ✓ 7.1.9 7.1.x ✓ 7.2

References

8 total

Showing 5 of 8 references View all on NVD

Details

CVE ID CVE-2026-74705

Severity Critical

CVSS score 10.0 / 10

CVSS version 3.1

Published 2026-08-22

Modified 2026-08-25

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-74705?

CVE-2026-74705 is a Critical severity Linux kernel vulnerability with a CVSS score of 10.0 out of 10 . It affects Linux kernel versions from 4.6 onward and has been patched in 5.10.265, 5.15.216, 6.1.183 and others. CVE-2026-74705 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-74705?

CVE-2026-74705 has a CVSS score of 10.0 out of 10, rated Critical severity (CVSS 3.1). The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
Is there a patch available for CVE-2026-74705?

Yes. CVE-2026-74705 has been patched. Fixed versions include 5.10.265, 5.15.216, 6.1.183 and others. If you are running Linux kernel 4.6 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-74705 actively exploited?

No. CVE-2026-74705 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.