CVE-2026-72397
- Source
- https://cve.org/CVERecord?id=CVE-2026-72397
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72397.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-72397
- Downstream
- Published
- 2026-08-15T05:56:23Z
- Modified
- 2026-08-18T03:56:42Z
- Severity
-
- 7.1 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H CVSS Calculator
- Summary
- hwmon: (pmbus/core) honor vrm_version in pmbus_data2reg_vid()
- Details
-
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.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72397.json" }- References
-
- https://git.kernel.org/stable/c/5bd0d47640395f8a8c34446b62d1781b88869dfa
- https://git.kernel.org/stable/c/828cd614e2af053ca5e1d6da767bbd8a1b5cabfb
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72397.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-72397
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git