CVE-2026-46007hwmon: (powerz) Avoid cacheline sharing for DMA buffer
- 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) Avoid cacheline sharing for DMA buffer Depending on the architecture the transfer buffer may share a cacheline with the following mutex. As the buffer may be used for DMA, that is problematic. Use the high-level DMA helpers to make sure that cacheline sharing can not happen. Also drop the comment, as the helpers are documentation enough. https://sashiko.dev/#/message/20260408175814.934BFC19421%40smtp.kernel.org
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 · Analyzed | 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 – < 270e5c576a6e30f6b337fa91d35b44c241297533
- affected 4381a36abdf1c5c0323c1c51f869dc000115eb20 – < 1869da3efe703b016b23d4885f3fe6c1751959c6
- affected 4381a36abdf1c5c0323c1c51f869dc000115eb20 – < 2fa2273016a0483217404cfe330967c4ac6832a9
- affected 4381a36abdf1c5c0323c1c51f869dc000115eb20 – < 3023c050af3600bf451153335dea5e073c9a3088
- affected 6.7
- unaffected < 6.7
- unaffected 6.12.88 – ≤ 6.12.*
- unaffected 6.18.30 – ≤ 6.18.*
- unaffected 7.0.4 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
References4
- https://git.kernel.org/stable/c/270e5c576a6e30f6b337fa91d35b44c241297533 (opens in a new tab)
- https://git.kernel.org/stable/c/1869da3efe703b016b23d4885f3fe6c1751959c6 (opens in a new tab)
- https://git.kernel.org/stable/c/2fa2273016a0483217404cfe330967c4ac6832a9 (opens in a new tab)
- https://git.kernel.org/stable/c/3023c050af3600bf451153335dea5e073c9a3088 (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-2026-32304 (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-2026-46007)Record last updated .