CVE-2025-38310

seg6: Fix validation of nexthop addresses

Severity Score

7.1

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In the Linux kernel, the following vulnerability has been resolved: seg6: Fix validation of nexthop addresses The kernel currently validates that the length of the provided nexthop
address does not exceed the specified length. This can lead to the
kernel reading uninitialized memory if user space provided a shorter
length than the specified one. Fix by validating that the provided length exactly matches the specified
one.

In the Linux kernel, the following vulnerability has been resolved: seg6: Fix validation of nexthop addresses The kernel currently validates that the length of the provided nexthop address does not exceed the specified length. This can lead to the kernel reading uninitialized memory if user space provided a shorter length than the specified one. Fix by validating that the provided length exactly matches the specified one.

This update provides the initial livepatch for this kernel update. This update does not contain any fixes and will be updated with livepatches later.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2025-04-16 CVE Reserved
2025-07-10 CVE Published
2025-11-03 CVE Updated
2026-02-03 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (7)

URL	Tag	Source
https://git.kernel.org/stable/c/d1df6fd8a1d22d37cffa0075ab8ad423ce656777	Vuln. Introduced

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/668923c474608dd9ebce0fbcc41bd8a27aa73dd6	2025-06-27
https://git.kernel.org/stable/c/cef33a86bcb04ecf4dc10c56f6c42ee9d1c54bac	2025-06-27
https://git.kernel.org/stable/c/d2507aeea45b3c5aa24d5daae0cf3db76895c0b7	2025-06-19
https://git.kernel.org/stable/c/d5d9fd13bc19a3f9f2a951c5b6e934d84205789e	2025-06-19
https://git.kernel.org/stable/c/cd4cd09810211fa23609c5c1018352e9e1cd8e5a	2025-06-19
https://git.kernel.org/stable/c/7632fedb266d93ed0ed9f487133e6c6314a9b2d1	2025-06-05

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.14 < 5.15.186 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.14 < 5.15.186"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.14 < 6.1.142 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.14 < 6.1.142"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.14 < 6.6.94 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.14 < 6.6.94"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.14 < 6.12.34 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.14 < 6.12.34"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.14 < 6.15.3 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.14 < 6.15.3"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.14 < 6.16 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.14 < 6.16"		en		Affected