CVE-2026-31738

MEDIUM EPSS 2.4%
Published May 1, 20262mo ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Medium
Find Similar
Published May 1, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: vxlan: validate ND option lengths in vxlan_na_create vxlan_na_create() walks ND options according to option-provided lengths. A malformed option can make the parser advance beyond the computed option span or use a too-short source LLADDR option payload. Validate option lengths against the remaining NS option area before advancing, and only read source LLADDR when the option is large enough for an Ethernet address.

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
2.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 17

VendorProductVersionRange
linuxlinux_kernel*≥3.12.18  –  <3.13
linuxlinux_kernel*≥3.13.10  –  <3.14
linuxlinux_kernel*≥3.14.1  –  <5.10.253
linuxlinux_kernel*≥5.11  –  <5.15.203
linuxlinux_kernel*≥5.16  –  <6.1.168
linuxlinux_kernel*≥6.2  –  <6.6.134
linuxlinux_kernel*≥6.7  –  <6.12.81
linuxlinux_kernel*≥6.13  –  <6.18.22
linuxlinux_kernel*≥6.19  –  <6.19.12
linuxlinux_kernel3.14any
linuxlinux_kernel3.14any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 8

  • git.kernel.org https://git.kernel.org/stable/c/2029712fb2c87e9a8c75094906f2ee29bf08c500
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/602596c69a70e50d9ab8c6ae0290a01f88229dd7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/901c1dd3bab2955d7e664f914c374c8c3ac2b958
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/afa9a05e6c4971bd5586f1b304e14d61fb3d9385
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b69c4236255bd8de16cd876e58c6f0867d1d78b1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/de20d2e3b9179d132f5f5b44e490d7c916c6321b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e476745917a1e288eb15e7ff49d286a86a4861d3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/eddfce70a6f3107d1679b0c2fcbeb96b593bd679
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/2029712fb2c87e9a8c75094906f2ee29bf08c500
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/602596c69a70e50d9ab8c6ae0290a01f88229dd7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/901c1dd3bab2955d7e664f914c374c8c3ac2b958
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/afa9a05e6c4971bd5586f1b304e14d61fb3d9385
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b69c4236255bd8de16cd876e58c6f0867d1d78b1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/de20d2e3b9179d132f5f5b44e490d7c916c6321b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e476745917a1e288eb15e7ff49d286a86a4861d3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/eddfce70a6f3107d1679b0c2fcbeb96b593bd679
    Patch