CVE-2026-46007 (GCVE-0-2026-46007)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:56 – Updated: 2026-05-27 12:56
VLAI
Title
hwmon: (powerz) Avoid cacheline sharing for DMA buffer
Summary
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
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 4381a36abdf1c5c0323c1c51f869dc000115eb20 , < 270e5c576a6e30f6b337fa91d35b44c241297533 (git)
Affected: 4381a36abdf1c5c0323c1c51f869dc000115eb20 , < 1869da3efe703b016b23d4885f3fe6c1751959c6 (git)
Affected: 4381a36abdf1c5c0323c1c51f869dc000115eb20 , < 2fa2273016a0483217404cfe330967c4ac6832a9 (git)
Affected: 4381a36abdf1c5c0323c1c51f869dc000115eb20 , < 3023c050af3600bf451153335dea5e073c9a3088 (git)
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Linux Linux Affected: 6.7
Unaffected: 0 , < 6.7 (semver)
Unaffected: 6.12.88 , ≤ 6.12.* (semver)
Unaffected: 6.18.30 , ≤ 6.18.* (semver)
Unaffected: 7.0.4 , ≤ 7.0.* (semver)
Unaffected: 7.1-rc1 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: (powerz) Avoid cacheline sharing for DMA buffer\n\nDepending on the architecture the transfer buffer may share a cacheline\nwith the following mutex. As the buffer may be used for DMA, that is\nproblematic.\n\nUse the high-level DMA helpers to make sure that cacheline sharing can\nnot happen.\n\nAlso drop the comment, as the helpers are documentation enough.\n\nhttps://sashiko.dev/#/message/20260408175814.934BFC19421%40smtp.kernel.org"
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    "dateReserved": "2026-05-13T15:03:33.092Z",
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    "state": "PUBLISHED"
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}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.