CVE-2025-39678: Linux kernel · platform/x86/amd/hsmp: Ensure sock->metric_tbl_addr is non-NULL
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in d47782d5c0cb87b9826041f34505580204ccf703 : update Linux kernel when convenient.
Data as of 5 Nov 2026, 21:48 UTC
Rated Medium by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
Thin evidence
One scorer or none- CISA SSVC
- Exploitation
- No evidence of active exploitation and no public proof of concept
- Automatable
- Attackers cannot reliably automate steps 1–4 of the kill chain
- Technical impact
- Limited control over the software or limited information exposure
CISA SSVC assessment, 2026-11-05.
- Patch
- Available – fixed in d47782d5c0cb87b9826041f34505580204ccf703, 782977c0d8ba432b6fd3d5d0d87016a523ec1c69, 2c78fb287e1f430b929f2e49786518350d15605c
Exploitation evidence
Disclosed: evidence found.
CVE published 5 Sep 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
Upgrade Linux kernel to d47782d5c0cb87b9826041f34505580204ccf703, 782977c0d8ba432b6fd3d5d0d87016a523ec1c69 or 2c78fb287e1f430b929f2e49786518350d15605c.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in
|
| LinuxLinux | Affected
| Fixed in– |
AI-suggested
A fix is available and has been applied in the Linux kernel source code as indicated by the fixed commit hashes. Users should update to the patched kernel version or apply the relevant patches to mitigate this issue.
Description
A vulnerability in the Linux kernel's platform/x86/amd/hsmp component could lead to a NULL pointer dereference if the metric table address is not allocated. This issue has been fixed by adding a check to ensure sock->metric_tbl_addr is non-NULL before accessing metrics_bin.