CVE-2025-38006

MEDIUM EPSS 5.1%
Published Jun 18, 20251y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Jun 18, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: net: mctp: Don't access ifa_index when missing In mctp_dump_addrinfo, ifa_index can be used to filter interfaces, but only when the struct ifaddrmsg is provided. Otherwise it will be comparing to uninitialised memory - reproducible in the syzkaller case from dhcpd, or busybox "ip addr show". The kernel MCTP implementation has always filtered by ifa_index, so existing userspace programs expecting to dump MCTP addresses must already be passing a valid ifa_index value (either 0 or a real index). BUG: KMSAN: uninit-value in mctp_dump_addrinfo+0x208/0xac0 net/mctp/device.c:128 mctp_dump_addrinfo+0x208/0xac0 net/mctp/device.c:128 rtnl_dump_all+0x3ec/0x5b0 net/core/rtnetlink.c:4380 rtnl_dumpit+0xd5/0x2f0 net/core/rtnetlink.c:6824 netlink_dump+0x97b/0x1690 net/netlink/af_netlink.c:2309

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
5.1% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-908

Affected Products 9

VendorProductVersionRange
linuxlinux_kernel*≥5.15  –  <6.6.92
linuxlinux_kernel*≥6.7  –  <6.12.30
linuxlinux_kernel*≥6.13  –  <6.14.8
linuxlinux_kernel6.15any
linuxlinux_kernel6.15any
linuxlinux_kernel6.15any
linuxlinux_kernel6.15any
linuxlinux_kernel6.15any
linuxlinux_kernel6.15any

References 5

  • git.kernel.org https://git.kernel.org/stable/c/24fa213dffa470166ec014f979f36c6ff44afb45
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/8ef7b3f0db69e2f4a80be351f6aee9a4c2332ef9
  • git.kernel.org https://git.kernel.org/stable/c/acab78ae12c7fefb4f3bfe22e00770a5faa42724
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d4d1561d17eb72908e4489c0900d96e0484fac20
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f11cf946c0a92c560a890d68e4775723353599e1
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/24fa213dffa470166ec014f979f36c6ff44afb45
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/acab78ae12c7fefb4f3bfe22e00770a5faa42724
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d4d1561d17eb72908e4489c0900d96e0484fac20
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f11cf946c0a92c560a890d68e4775723353599e1
    Patch