🛡️ CVE-2026-46007 on Ubuntu — linux
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
Distribution advisory
This page covers CVE-2026-46007 as tracked by Ubuntu, for the package linux. The fix is available in version 7.0.0-27.27; earlier versions remain affected.
How this vulnerability can be exploited
This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.
Affected software
UBUNTU-CVE-2026-46007 is recorded against 133 packages.
- linux (fixed in 7.0.0-27.27)
- linux-allwinner-5.19
- linux-aws (fixed in 7.0.0-1008.8)
- linux-aws-5.0
- linux-aws-5.11
- linux-aws-5.13
- linux-aws-5.19
- linux-aws-5.3
- linux-aws-5.8
- linux-aws-6.14
- linux-aws-6.17
- linux-aws-6.2
- linux-aws-6.5
- linux-aws-6.8 (fixed in 6.8.0-1061.64~22.04.1)
- linux-aws-fips (fixed in 6.8.0-1061.64+fips1)
- linux-azure (fixed in 7.0.0-1010.10)
- linux-azure-5.11
- linux-azure-5.13
- linux-azure-5.19
- linux-azure-5.3
- linux-azure-5.8
- linux-azure-6.11
- linux-azure-6.14
- linux-azure-6.17
Show the remaining 109 packages
- linux-azure-6.2
- linux-azure-6.5
- linux-azure-6.8 (fixed in 6.8.0-1063.71~22.04.1)
- linux-azure-edge
- linux-azure-fde (fixed in 7.0.0-1009.9)
- linux-azure-fde-5.19
- linux-azure-fde-6.14
- linux-azure-fde-6.17
- linux-azure-fde-6.2
- linux-azure-fde-6.8 (fixed in 6.8.0-1062.69~22.04.1)
- linux-azure-fips (fixed in 6.8.0-1063.71+fips2)
- linux-azure-nvidia
- linux-azure-nvidia-6.14
- linux-bluefield
- linux-fips (fixed in 6.8.0-136.136+fips2)
- linux-gcp (fixed in 7.0.0-1007.7)
- linux-gcp-5.11
- linux-gcp-5.13
- linux-gcp-5.19
- linux-gcp-5.3
- linux-gcp-5.8
- linux-gcp-6.11
- linux-gcp-6.14
- linux-gcp-6.17
- linux-gcp-6.2
- linux-gcp-6.5
- linux-gcp-6.8 (fixed in 6.8.0-1064.72~22.04.1)
- linux-gcp-fips (fixed in 6.8.0-1064.72+fips1)
- linux-gke (fixed in 6.8.0-1059.67)
- linux-gke-4.15
- linux-gke-5.15
- linux-gke-5.4
- linux-gkeop (fixed in 6.8.0-1046.50)
- linux-gkeop-5.15
- linux-gkeop-5.4
- linux-hwe
- linux-hwe-5.11
- linux-hwe-5.13
- linux-hwe-5.19
- linux-hwe-5.8
- linux-hwe-6.11
- linux-hwe-6.14
- linux-hwe-6.17
- linux-hwe-6.2
- linux-hwe-6.5
- linux-hwe-6.8 (fixed in 6.8.0-136.136~22.04.1)
- linux-hwe-7.0 (fixed in 7.0.0-28.28~24.04.1)
- linux-hwe-edge
- linux-ibm (fixed in 7.0.0-1009.9)
- linux-ibm-6.8 (fixed in 6.8.0-1061.62~22.04.1)
- linux-intel-5.13
- linux-intel-iot-realtime
- linux-lowlatency (fixed in 6.8.0-136.136.2)
- linux-lowlatency-hwe-5.19
- linux-lowlatency-hwe-6.11
- linux-lowlatency-hwe-6.2
- linux-lowlatency-hwe-6.5
- linux-lowlatency-hwe-6.8 (fixed in 6.8.0-136.136.2~22.04.1)
- linux-nvidia (fixed in 7.0.0-1013.13)
- linux-nvidia-6.11
- linux-nvidia-6.17
- linux-nvidia-6.2
- linux-nvidia-6.5
- linux-nvidia-6.8 (fixed in 6.8.0-1059.62~22.04.1)
- linux-nvidia-lowlatency (fixed in 6.8.0-1059.62.1)
- linux-nvidia-tegra (fixed in 6.8.0-1030.31)
- linux-oem
- linux-oem-5.10
- linux-oem-5.13
- linux-oem-5.14
- linux-oem-5.17
- linux-oem-5.6
- linux-oem-6.0
- linux-oem-6.1
- linux-oem-6.11
- linux-oem-6.14
- linux-oem-6.17
- linux-oem-6.5
- linux-oem-6.8
- linux-oem-7.0 (fixed in 7.0.0-1008.8)
- linux-oracle (fixed in 7.0.0-1007.7)
- linux-oracle-5.0
- linux-oracle-5.11
- linux-oracle-5.13
- linux-oracle-5.3
- linux-oracle-5.8
- linux-oracle-6.14
- linux-oracle-6.17
- linux-oracle-6.5
- linux-oracle-6.8 (fixed in 6.8.0-1058.61~22.04.1)
- linux-raspi (fixed in 7.0.0-1014.14)
- linux-raspi-realtime
- linux-raspi2
- linux-realtime (fixed in 7.0.0-27.27.1)
- linux-realtime-6.14
- linux-realtime-6.17
- linux-realtime-6.8 (fixed in 6.8.1-1056.57~22.04.2)
- linux-riscv (fixed in 7.0.0-27.27.1)
- linux-riscv-5.11
- linux-riscv-5.19
- linux-riscv-5.8
- linux-riscv-6.14
- linux-riscv-6.17
- linux-riscv-6.5
- linux-riscv-6.8 (fixed in 6.8.0-136.136~22.04.3)
- linux-starfive-5.19
- linux-starfive-6.2
- linux-starfive-6.5
- linux-xilinx (fixed in 6.8.0-1033.34)
Timeline and source
Published on 27 May 2026 and last revised on 11 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
References
ubuntu.com (Report)
www.cve.org (Report)
git.kernel.org (Report)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
CVE-2026-46007 on other distributions
Each distribution ships its own build and its own fixed version. Pick the one you run:
Details
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| linux | — | 7.0.0-27.27 |
| linux-allwinner-5.19 | — | — |
| linux-aws | — | 7.0.0-1008.8 |
| linux-aws-5.0 | — | — |
| linux-aws-5.11 | — | — |
| linux-aws-5.13 | — | — |
| linux-aws-5.19 | — | — |
| linux-aws-5.3 | — | — |
| linux-aws-5.8 | — | — |
| linux-aws-6.14 | — | — |
| linux-aws-6.17 | — | — |
| linux-aws-6.2 | — | — |
| linux-aws-6.5 | — | — |
| linux-aws-6.8 | — | 6.8.0-1061.64~22.04.1 |
| linux-aws-fips | — | 6.8.0-1061.64+fips1 |
| linux-azure | — | 7.0.0-1010.10 |
| linux-azure-5.11 | — | — |
| linux-azure-5.13 | — | — |
| linux-azure-5.19 | — | — |
| linux-azure-5.3 | — | — |
| linux-azure-5.8 | — | — |
| linux-azure-6.11 | — | — |
| linux-azure-6.14 | — | — |
| linux-azure-6.17 | — | — |
| linux-azure-6.2 | — | — |
| linux-azure-6.5 | — | — |
| linux-azure-6.8 | — | 6.8.0-1063.71~22.04.1 |
| linux-azure-edge | — | — |
| linux-azure-fde | — | 7.0.0-1009.9 |
| linux-azure-fde-5.19 | — | — |
| linux-azure-fde-6.14 | — | — |
| linux-azure-fde-6.17 | — | — |
| linux-azure-fde-6.2 | — | — |
| linux-azure-fde-6.8 | — | 6.8.0-1062.69~22.04.1 |
| linux-azure-fips | — | 6.8.0-1063.71+fips2 |
| linux-azure-nvidia | — | — |
| linux-azure-nvidia-6.14 | — | — |
| linux-bluefield | — | — |
| linux-fips | — | 6.8.0-136.136+fips2 |
| linux-gcp | — | 7.0.0-1007.7 |
| linux-gcp-5.11 | — | — |
| linux-gcp-5.13 | — | — |
| linux-gcp-5.19 | — | — |
| linux-gcp-5.3 | — | — |
| linux-gcp-5.8 | — | — |
| linux-gcp-6.11 | — | — |
| linux-gcp-6.14 | — | — |
| linux-gcp-6.17 | — | — |
| linux-gcp-6.2 | — | — |
| linux-gcp-6.5 | — | — |
| linux-gcp-6.8 | — | 6.8.0-1064.72~22.04.1 |
| linux-gcp-fips | — | 6.8.0-1064.72+fips1 |
| linux-gke | — | 6.8.0-1059.67 |
| linux-gke-4.15 | — | — |
| linux-gke-5.15 | — | — |
| linux-gke-5.4 | — | — |
| linux-gkeop | — | 6.8.0-1046.50 |
| linux-gkeop-5.15 | — | — |
| linux-gkeop-5.4 | — | — |
| linux-hwe | — | — |
| linux-hwe-5.11 | — | — |
| linux-hwe-5.13 | — | — |
| linux-hwe-5.19 | — | — |
| linux-hwe-5.8 | — | — |
| linux-hwe-6.11 | — | — |
| linux-hwe-6.14 | — | — |
| linux-hwe-6.17 | — | — |
| linux-hwe-6.2 | — | — |
| linux-hwe-6.5 | — | — |
| linux-hwe-6.8 | — | 6.8.0-136.136~22.04.1 |
| linux-hwe-7.0 | — | 7.0.0-28.28~24.04.1 |
| linux-hwe-edge | — | — |
| linux-ibm | — | 7.0.0-1009.9 |
| linux-ibm-6.8 | — | 6.8.0-1061.62~22.04.1 |
| linux-intel-5.13 | — | — |
| linux-intel-iot-realtime | — | — |
| linux-lowlatency | — | 6.8.0-136.136.2 |
| linux-lowlatency-hwe-5.19 | — | — |
| linux-lowlatency-hwe-6.11 | — | — |
| linux-lowlatency-hwe-6.2 | — | — |
| linux-lowlatency-hwe-6.5 | — | — |
| linux-lowlatency-hwe-6.8 | — | 6.8.0-136.136.2~22.04.1 |
| linux-nvidia | — | 7.0.0-1013.13 |
| linux-nvidia-6.11 | — | — |
| linux-nvidia-6.17 | — | — |
| linux-nvidia-6.2 | — | — |
| linux-nvidia-6.5 | — | — |
| linux-nvidia-6.8 | — | 6.8.0-1059.62~22.04.1 |
| linux-nvidia-lowlatency | — | 6.8.0-1059.62.1 |
| linux-nvidia-tegra | — | 6.8.0-1030.31 |
| linux-oem | — | — |
| linux-oem-5.10 | — | — |
| linux-oem-5.13 | — | — |
| linux-oem-5.14 | — | — |
| linux-oem-5.17 | — | — |
| linux-oem-5.6 | — | — |
| linux-oem-6.0 | — | — |
| linux-oem-6.1 | — | — |
| linux-oem-6.11 | — | — |
| linux-oem-6.14 | — | — |
| linux-oem-6.17 | — | — |
| linux-oem-6.5 | — | — |
| linux-oem-6.8 | — | — |
| linux-oem-7.0 | — | 7.0.0-1008.8 |
| linux-oracle | — | 7.0.0-1007.7 |
| linux-oracle-5.0 | — | — |
| linux-oracle-5.11 | — | — |
| linux-oracle-5.13 | — | — |
| linux-oracle-5.3 | — | — |
| linux-oracle-5.8 | — | — |
| linux-oracle-6.14 | — | — |
| linux-oracle-6.17 | — | — |
| linux-oracle-6.5 | — | — |
| linux-oracle-6.8 | — | 6.8.0-1058.61~22.04.1 |
| linux-raspi | — | 7.0.0-1014.14 |
| linux-raspi-realtime | — | — |
| linux-raspi2 | — | — |
| linux-realtime | — | 7.0.0-27.27.1 |
| linux-realtime-6.14 | — | — |
| linux-realtime-6.17 | — | — |
| linux-realtime-6.8 | — | 6.8.1-1056.57~22.04.2 |
| linux-riscv | — | 7.0.0-27.27.1 |
| linux-riscv-5.11 | — | — |
| linux-riscv-5.19 | — | — |
| linux-riscv-5.8 | — | — |
| linux-riscv-6.14 | — | — |
| linux-riscv-6.17 | — | — |
| linux-riscv-6.5 | — | — |
| linux-riscv-6.8 | — | 6.8.0-136.136~22.04.3 |
| linux-starfive-5.19 | — | — |
| linux-starfive-6.2 | — | — |
| linux-starfive-6.5 | — | — |
| linux-xilinx | — | 6.8.0-1033.34 |
References
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More UBUNTU CVE 2026 advisories
Browse all of UBUNTU CVE 2026 in the advisory index.
- UBUNTU-CVE-2026-45999
- UBUNTU-CVE-2026-46000
- UBUNTU-CVE-2026-46001
- UBUNTU-CVE-2026-46002
- UBUNTU-CVE-2026-46003
- UBUNTU-CVE-2026-46004
- UBUNTU-CVE-2026-46005
- UBUNTU-CVE-2026-46006
- UBUNTU-CVE-2026-46008
- UBUNTU-CVE-2026-46009
- UBUNTU-CVE-2026-46010
- UBUNTU-CVE-2026-46011
- UBUNTU-CVE-2026-46012
- UBUNTU-CVE-2026-46013
- UBUNTU-CVE-2026-46014
- UBUNTU-CVE-2026-46015
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