CVE-2026-46073hwmon: (powerz) Fix missing usb_kill_urb() on signal interrupt
- 5.5MediumCVSS base score
- 0.12%Exploitation in 30 daysEPSS · top 98% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: hwmon: (powerz) Fix missing usb_kill_urb() on signal interrupt wait_for_completion_interruptible_timeout() returns -ERESTARTSYS when interrupted. This needs to abort the URB and return an error. No data has been received from the device so any reads from the transfer buffer are invalid. The original code tests !ret, which only catches the timeout case (0). On signal delivery (-ERESTARTSYS), !ret is false so the function skips usb_kill_urb() and falls through to read from the unfilled transfer buffer. Fix by capturing the return value into a long (matching the function return type) and handling signal (negative) and timeout (zero) cases with separate checks that both call usb_kill_urb() before returning.
Timeline
ID reserved
By Linux
- 14 days later
· 14 days later
Published
- 18 days later
· 18 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Undergoing Analysis | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.12% · top 98% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 4381a36abdf1c5c0323c1c51f869dc000115eb20 – < 8b51277eec433d4e724b273a5a5c64e8acfbe405
- affected 4381a36abdf1c5c0323c1c51f869dc000115eb20 – < b6cb07f02253bdefd2339e57eaa1428a7b28cd0f
- affected 4381a36abdf1c5c0323c1c51f869dc000115eb20 – < d64458784036f5818e22781254b6be299d52a19c
- affected 4381a36abdf1c5c0323c1c51f869dc000115eb20 – < b66437cb20a2d9ef201f40b675569f8ea7787c9f
- affected 6.7
- unaffected < 6.7
- unaffected 6.12.86 – ≤ 6.12.*
- unaffected 6.18.27 – ≤ 6.18.*
- unaffected 7.0.4 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
References4
- https://git.kernel.org/stable/c/8b51277eec433d4e724b273a5a5c64e8acfbe405 (opens in a new tab)
- https://git.kernel.org/stable/c/b6cb07f02253bdefd2339e57eaa1428a7b28cd0f (opens in a new tab)
- https://git.kernel.org/stable/c/d64458784036f5818e22781254b6be299d52a19c (opens in a new tab)
- https://git.kernel.org/stable/c/b66437cb20a2d9ef201f40b675569f8ea7787c9f (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-32455 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-46073)Record last updated .