Answer in brief
CVE-2025-38006 records a Medium severity (CVSS 5.5) vulnerability in net: mctp: Don't access ifa_index when missing. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.15:rc4:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.15:rc5:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:6.15:rc6:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=583be982d93479ea3d85091b0fd0b01201ede87d <8ef7b3f0db69e2f4a80be351f6aee9a4c2332ef9 || >=583be982d93479ea3d85091b0fd0b01201ede87d <d22efcd246a7688599eefcf8e5c7985a3854ef5d || >=583be982d93479ea3d85091b0fd0b01201ede87d <acab78ae12c7fefb4f3bfe22e00770a5faa42724 || >=583be982d93479ea3d85091b0fd0b01201ede87d <d4d1561d17eb72908e4489c0900d96e0484fac20 || >=583be982d93479ea3d85091b0fd0b01201ede87d <24fa213dffa470166ec014f979f36c6ff44afb45 || >=583be982d93479ea3d85091b0fd0b01201ede87d <f11cf946c0a92c560a890d68e4775723353599e1 | 8ef7b3f0db69e2f4a80be351f6aee9a4c2332ef9, d22efcd246a7688599eefcf8e5c7985a3854ef5d, acab78ae12c7fefb4f3bfe22e00770a5faa42724, d4d1561d17eb72908e4489c0900d96e0484fac20, 24fa213dffa470166ec014f979f36c6ff44afb45, f11cf946c0a92c560a890d68e4775723353599e1 |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
Jun 18, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 30, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 30, 2026
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
Quoted source text, attributed separately from HOL analysis.