hwmon: (pmbus/core) honor vrm_version in pmbus_data2reg_vid()
CVE-2026-72397 · published 15 Aug 2026
How serious is it
- Severity: high, CVSS score 7.1 out of 10.
- No exploit prediction (EPSS) score yet.
- Not on the CISA list of exploited vulnerabilities.
- No public exploit in Exploit-DB.
Is your app affected by CVE-2026-72397?
Paste this prompt into Claude Code, Cursor or any AI coding tool: it runs a free Shippable scan of your project and fixes what it finds. Built with Lovable, Bolt or v0? Scan your live app. Or upload your package file.
Who is affected
- Linux Linux: 068c227056b9223fea1a759e08db2558d5cbb5ad to < cd0e037130806d7714c356eccefac6e1b92dbc34, 068c227056b9223fea1a759e08db2558d5cbb5ad to < 125a5a4ad03c74ced4c2a55db45ef03505362ff9, 068c227056b9223fea1a759e08db2558d5cbb5ad to < 5bd0d47640395f8a8c34446b62d1781b88869dfa, 068c227056b9223fea1a759e08db2558d5cbb5ad to < 828cd614e2af053ca5e1d6da767bbd8a1b5cabfb
- Linux Linux: 4.3
How to check
- Find out whether you run the affected product and which version, then compare it with the versions above.
How to fix
Copies a prompt for Claude Code, Cursor or Codex that asks it to check whether you run this product.
- Apply the vendor's update or mitigation from the references below. If there is none yet, limit exposure of the affected service until there is.
- If a vulnerable version was live, check your logs and rotate the secrets that server could read.
The advisory
In the Linux kernel, the following vulnerability has been resolved:
hwmon: (pmbus/core) honor vrm_version in pmbus_data2reg_vid()
pmbus_data2reg_vid() hardcoded the VR11 encoding regardless of the
vrm_version configured by the driver, while pmbus_reg2data_vid()
already switched on it. Any driver that selects a non-VR11 VID mode
and exposes a regulator (or hwmon vout setter) sent dangerously
wrong codes to PMBUS_VOUT_COMMAND -- e.g. an nvidia195mv part asked
for 200 mV got the VR11 clamp to 500 mV encoded as 0xB2, which the
chip interprets as 1080 mV.
Mirror pmbus_reg2data_vid() so writes round-trip with reads.
Check your whole app
Dependencies are only half of it. Free and read-only: before you push, run npx shippable-dev scan localhost:3000 in your project folder, no account needed. For your live app, you prove it's yours with a one-line tag first.
References
- git.kernel.org/stable/c/cd0e037130806d7714c356eccefac6e1b92dbc34
- git.kernel.org/stable/c/125a5a4ad03c74ced4c2a55db45ef03505362ff9
- git.kernel.org/stable/c/5bd0d47640395f8a8c34446b62d1781b88869dfa
- git.kernel.org/stable/c/828cd614e2af053ca5e1d6da767bbd8a1b5cabfb
Merged from CVE List. Last updated 25 Oct 2026. All vulnerabilities · RSS · JSON