CVE-2025-21742

HIGH EPSS 10.4%
Published Feb 27, 20251y ago · Modified Jun 17, 20262w ago
7.1 CVSS 3.1
High
Find Similar
Published Feb 27, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: usbnet: ipheth: use static NDP16 location in URB Original code allowed for the start of NDP16 to be anywhere within the URB based on the `wNdpIndex` value in NTH16. Only the start position of NDP16 was checked, so it was possible for even the fixed-length part of NDP16 to extend past the end of URB, leading to an out-of-bounds read. On iOS devices, the NDP16 header always directly follows NTH16. Rely on and check for this specific format. This, along with NCM-specific minimal URB length check that already exists, will ensure that the fixed-length part of NDP16 plus a set amount of DPEs fit within the URB. Note that this commit alone does not fully address the OoB read. The limit on the amount of DPEs needs to be enforced separately.

CVSS Details

Base Score
7.1
Exploitability
1.8
Impact
5.2
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
10.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-125 Out-of-bounds Read Memory Safety

Affected Products 3

VendorProductVersionRange
linuxlinux_kernel*≥6.5  –  <6.6.78
linuxlinux_kernel*≥6.7  –  <6.12.14
linuxlinux_kernel*≥6.13  –  <6.13.3

References 4

  • git.kernel.org https://git.kernel.org/stable/c/2b619445dcb6dab97d8ed033fb57225aca1288c4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/86586dcb75cb8fd062a518aca8ee667938b91efb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8fb062178e1ce180e2cfdc9abc83a1b9fea381ca
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cf1ac7f7cf601ac31d1580559c002b5e37b733b7
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/2b619445dcb6dab97d8ed033fb57225aca1288c4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/86586dcb75cb8fd062a518aca8ee667938b91efb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8fb062178e1ce180e2cfdc9abc83a1b9fea381ca
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/cf1ac7f7cf601ac31d1580559c002b5e37b733b7
    Patch