🛡️ CVE-2026-46333 on Ubuntu — linux
Description
In the Linux kernel, the following vulnerability has been resolved: ptrace: slightly saner 'get_dumpable()' logic The 'dumpability' of a task is fundamentally about the memory image of the task - the concept comes from whether it can core dump or not - and makes no sense when you don't have an associated mm. And almost all users do in fact use it only for the case where the task has a mm pointer. But we have one odd special case: ptrace_may_access() uses 'dumpable' to check various other things entirely independently of the MM (typically explicitly using flags like PTRACE_MODE_READ_FSCREDS). Including for threads that no longer have a VM (and maybe never did, like most kernel threads). It's not what this flag was designed for, but it is what it is. The ptrace code does check that the uid/gid matches, so you do have to be uid-0 to see kernel thread details, but this means that the traditional "drop capabilities" model doesn't make any difference for this all. Make it all make a *bit* more sense by saying that if you don't have a MM pointer, we'll use a cached "last dumpability" flag if the thread ever had a MM (it will be zero for kernel threads since it is never set), and require a proper CAP_SYS_PTRACE capability to override.
Distribution advisory
This page covers CVE-2026-46333 as tracked by Ubuntu, for the package linux. The fix is available in version 7.0.0-22.22; 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 high, integrity high, availability none.
Affected software and timeline
Affected software: linux (fixed in 7.0.0-22.22), linux-allwinner-5.19, linux-aws (fixed in 7.0.0-1006.6), linux-aws-5.0, linux-aws-5.11, linux-aws-5.13, linux-aws-5.15 (fixed in 5.15.0-1109.116~20.04.1), linux-aws-5.19, linux-aws-5.3, linux-aws-5.4, linux-aws-5.8, linux-aws-6.14, linux-aws-6.17 (fixed in 6.17.0-1017.17~24.04.1), linux-aws-6.2, linux-aws-6.5, linux-aws-6.8 (fixed in 6.8.0-1057.60~22.04.1), linux-aws-fips (fixed in 6.8.0-1057.60+fips1), linux-aws-hwe, linux-azure (fixed in 7.0.0-1007.7), linux-azure-4.15, linux-azure-5.11, linux-azure-5.13, linux-azure-5.15 (fixed in 5.15.0-1114.123~20.04.1), linux-azure-5.19, linux-azure-5.3, linux-azure-5.4, linux-azure-5.8, linux-azure-6.11, linux-azure-6.14, linux-azure-6.17 (fixed in 6.17.0-1017.17~24.04.1), linux-azure-6.2, linux-azure-6.5, linux-azure-6.8 (fixed in 6.8.0-1059.65~22.04.1), linux-azure-edge, linux-azure-fde, linux-azure-fde-5.15, 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, linux-azure-fips (fixed in 6.8.0-1059.65+fips1), linux-azure-nvidia, linux-azure-nvidia-6.14, linux-bluefield, linux-fips (fixed in 6.8.0-124.124+fips1), linux-gcp (fixed in 7.0.0-1005.5), linux-gcp-4.15, linux-gcp-5.11, linux-gcp-5.13, linux-gcp-5.15 (fixed in 5.15.0-1109.118~20.04.1), linux-gcp-5.19, linux-gcp-5.3, linux-gcp-5.4, linux-gcp-5.8, linux-gcp-6.11, linux-gcp-6.14, linux-gcp-6.17 (fixed in 6.17.0-1018.19~24.04.1), linux-gcp-6.2, linux-gcp-6.5, linux-gcp-6.8 (fixed in 6.8.0-1060.63~22.04.1), linux-gcp-fips (fixed in 6.8.0-1060.63+fips1), linux-gke (fixed in 6.8.0-1055.61), linux-gke-4.15, linux-gke-5.15, linux-gke-5.4, linux-gkeop (fixed in 6.8.0-1042.45), linux-gkeop-5.15, linux-gkeop-5.4, linux-hwe, linux-hwe-5.11, linux-hwe-5.13, linux-hwe-5.15 (fixed in 5.15.0-181.191~20.04.1), linux-hwe-5.19, linux-hwe-5.4, linux-hwe-5.8, linux-hwe-6.11, linux-hwe-6.14, linux-hwe-6.17 (fixed in 6.17.0-35.35~24.04.1), linux-hwe-6.2, linux-hwe-6.5, linux-hwe-6.8 (fixed in 6.8.0-124.124~22.04.1), linux-hwe-7.0 (fixed in 7.0.0-28.28~24.04.1), linux-hwe-edge, linux-ibm (fixed in 7.0.0-1007.7), linux-ibm-5.15 (fixed in 5.15.0-1103.106~20.04.1), linux-ibm-5.4, linux-ibm-6.8 (fixed in 6.8.0-1057.58~22.04.1), linux-intel-5.13, linux-intel-iot-realtime (fixed in 5.15.0-1101.103), linux-intel-iotg (fixed in 5.15.0-1104.110), linux-intel-iotg-5.15 (fixed in 5.15.0-1104.110~20.04.1), linux-iot, linux-kvm (fixed in 5.15.0-1101.106), linux-lowlatency (fixed in 6.8.0-134.134.1), linux-lowlatency-hwe-5.15 (fixed in 5.15.0-181.191~20.04.1), 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 6.8.0-134.134.1~22.04.1), linux-lts-xenial, linux-nvidia (fixed in 7.0.0-1009.9), linux-nvidia-6.11, linux-nvidia-6.17 (fixed in 6.17.0-1021.21), linux-nvidia-6.2, linux-nvidia-6.5, linux-nvidia-6.8 (fixed in 6.8.0-1055.58~22.04.1), linux-nvidia-lowlatency (fixed in 6.8.0-1055.58.1), linux-nvidia-tegra (fixed in 6.8.0-1026.26), linux-nvidia-tegra-5.15 (fixed in 5.15.0-1061.61~20.04.1), linux-nvidia-tegra-igx (fixed in 5.15.0-1050.50), 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 (fixed in 6.17.0-1024.24), linux-oem-6.5, linux-oem-6.8, linux-oem-7.0 (fixed in 7.0.0-1008.8), linux-oracle (fixed in 7.0.0-1005.5), linux-oracle-5.0, linux-oracle-5.11, linux-oracle-5.13, linux-oracle-5.15 (fixed in 5.15.0-1106.112~20.04.1), linux-oracle-5.3, linux-oracle-5.4, linux-oracle-5.8, linux-oracle-6.14, linux-oracle-6.17 (fixed in 6.17.0-1016.16~24.04.1), linux-oracle-6.5, linux-oracle-6.8 (fixed in 6.8.0-1054.55~22.04.1), linux-raspi (fixed in 7.0.0-1011.11), linux-raspi-5.4, linux-raspi-realtime (fixed in 6.8.0-2046.47), linux-raspi2, linux-realtime (fixed in 7.0.0-22.22.1), linux-realtime-6.14, linux-realtime-6.17 (fixed in 6.17.0-1014.16~24.04.1), linux-realtime-6.8 (fixed in 6.8.1-1052.53~22.04.1), linux-riscv (fixed in 7.0.0-22.22.1), linux-riscv-5.11, linux-riscv-5.15 (fixed in 5.15.0-1103.107~20.04.1), linux-riscv-5.19, linux-riscv-5.8, linux-riscv-6.14, linux-riscv-6.17 (fixed in 6.17.0-35.35.1~24.04.1), linux-riscv-6.5, linux-riscv-6.8 (fixed in 6.8.0-124.124~22.04.1), linux-starfive-5.19, linux-starfive-6.2, linux-starfive-6.5, linux-xilinx (fixed in 6.8.0-1032.33) and linux-xilinx-zynqmp (fixed in 5.15.0-1074.78). Published on 15 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)
github.com (Report)
git.kernel.org (Report)
x.com (Report)
github.com (Report)
www.openwall.com (Report)
www.openwall.com (Report)
ubuntu.com (Report)
cdn2.qualys.com (Report)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
CVE-2026-46333 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:H/I:H/A:N
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| linux | — | 7.0.0-22.22 |
| linux-allwinner-5.19 | — | — |
| linux-aws | — | 7.0.0-1006.6 |
| linux-aws-5.0 | — | — |
| linux-aws-5.11 | — | — |
| linux-aws-5.13 | — | — |
| linux-aws-5.15 | — | 5.15.0-1109.116~20.04.1 |
| linux-aws-5.19 | — | — |
| linux-aws-5.3 | — | — |
| linux-aws-5.4 | — | — |
| linux-aws-5.8 | — | — |
| linux-aws-6.14 | — | — |
| linux-aws-6.17 | — | 6.17.0-1017.17~24.04.1 |
| linux-aws-6.2 | — | — |
| linux-aws-6.5 | — | — |
| linux-aws-6.8 | — | 6.8.0-1057.60~22.04.1 |
| linux-aws-fips | — | 6.8.0-1057.60+fips1 |
| linux-aws-hwe | — | — |
| linux-azure | — | 7.0.0-1007.7 |
| linux-azure-4.15 | — | — |
| linux-azure-5.11 | — | — |
| linux-azure-5.13 | — | — |
| linux-azure-5.15 | — | 5.15.0-1114.123~20.04.1 |
| linux-azure-5.19 | — | — |
| linux-azure-5.3 | — | — |
| linux-azure-5.4 | — | — |
| linux-azure-5.8 | — | — |
| linux-azure-6.11 | — | — |
| linux-azure-6.14 | — | — |
| linux-azure-6.17 | — | 6.17.0-1017.17~24.04.1 |
| linux-azure-6.2 | — | — |
| linux-azure-6.5 | — | — |
| linux-azure-6.8 | — | 6.8.0-1059.65~22.04.1 |
| linux-azure-edge | — | — |
| linux-azure-fde | — | — |
| linux-azure-fde-5.15 | — | — |
| 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 | — | — |
| linux-azure-fips | — | 6.8.0-1059.65+fips1 |
| linux-azure-nvidia | — | — |
| linux-azure-nvidia-6.14 | — | — |
| linux-bluefield | — | — |
| linux-fips | — | 6.8.0-124.124+fips1 |
| linux-gcp | — | 7.0.0-1005.5 |
| linux-gcp-4.15 | — | — |
| linux-gcp-5.11 | — | — |
| linux-gcp-5.13 | — | — |
| linux-gcp-5.15 | — | 5.15.0-1109.118~20.04.1 |
| linux-gcp-5.19 | — | — |
| linux-gcp-5.3 | — | — |
| linux-gcp-5.4 | — | — |
| linux-gcp-5.8 | — | — |
| linux-gcp-6.11 | — | — |
| linux-gcp-6.14 | — | — |
| linux-gcp-6.17 | — | 6.17.0-1018.19~24.04.1 |
| linux-gcp-6.2 | — | — |
| linux-gcp-6.5 | — | — |
| linux-gcp-6.8 | — | 6.8.0-1060.63~22.04.1 |
| linux-gcp-fips | — | 6.8.0-1060.63+fips1 |
| linux-gke | — | 6.8.0-1055.61 |
| linux-gke-4.15 | — | — |
| linux-gke-5.15 | — | — |
| linux-gke-5.4 | — | — |
| linux-gkeop | — | 6.8.0-1042.45 |
| linux-gkeop-5.15 | — | — |
| linux-gkeop-5.4 | — | — |
| linux-hwe | — | — |
| linux-hwe-5.11 | — | — |
| linux-hwe-5.13 | — | — |
| linux-hwe-5.15 | — | 5.15.0-181.191~20.04.1 |
| linux-hwe-5.19 | — | — |
| linux-hwe-5.4 | — | — |
| linux-hwe-5.8 | — | — |
| linux-hwe-6.11 | — | — |
| linux-hwe-6.14 | — | — |
| linux-hwe-6.17 | — | 6.17.0-35.35~24.04.1 |
| linux-hwe-6.2 | — | — |
| linux-hwe-6.5 | — | — |
| linux-hwe-6.8 | — | 6.8.0-124.124~22.04.1 |
| linux-hwe-7.0 | — | 7.0.0-28.28~24.04.1 |
| linux-hwe-edge | — | — |
| linux-ibm | — | 7.0.0-1007.7 |
| linux-ibm-5.15 | — | 5.15.0-1103.106~20.04.1 |
| linux-ibm-5.4 | — | — |
| linux-ibm-6.8 | — | 6.8.0-1057.58~22.04.1 |
| linux-intel-5.13 | — | — |
| linux-intel-iot-realtime | — | 5.15.0-1101.103 |
| linux-intel-iotg | — | 5.15.0-1104.110 |
| linux-intel-iotg-5.15 | — | 5.15.0-1104.110~20.04.1 |
| linux-iot | — | — |
| linux-kvm | — | 5.15.0-1101.106 |
| linux-lowlatency | — | 6.8.0-134.134.1 |
| linux-lowlatency-hwe-5.15 | — | 5.15.0-181.191~20.04.1 |
| 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 | — | 6.8.0-134.134.1~22.04.1 |
| linux-lts-xenial | — | — |
| linux-nvidia | — | 7.0.0-1009.9 |
| linux-nvidia-6.11 | — | — |
| linux-nvidia-6.17 | — | 6.17.0-1021.21 |
| linux-nvidia-6.2 | — | — |
| linux-nvidia-6.5 | — | — |
| linux-nvidia-6.8 | — | 6.8.0-1055.58~22.04.1 |
| linux-nvidia-lowlatency | — | 6.8.0-1055.58.1 |
| linux-nvidia-tegra | — | 6.8.0-1026.26 |
| linux-nvidia-tegra-5.15 | — | 5.15.0-1061.61~20.04.1 |
| linux-nvidia-tegra-igx | — | 5.15.0-1050.50 |
| 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 | — | 6.17.0-1024.24 |
| linux-oem-6.5 | — | — |
| linux-oem-6.8 | — | — |
| linux-oem-7.0 | — | 7.0.0-1008.8 |
| linux-oracle | — | 7.0.0-1005.5 |
| linux-oracle-5.0 | — | — |
| linux-oracle-5.11 | — | — |
| linux-oracle-5.13 | — | — |
| linux-oracle-5.15 | — | 5.15.0-1106.112~20.04.1 |
| linux-oracle-5.3 | — | — |
| linux-oracle-5.4 | — | — |
| linux-oracle-5.8 | — | — |
| linux-oracle-6.14 | — | — |
| linux-oracle-6.17 | — | 6.17.0-1016.16~24.04.1 |
| linux-oracle-6.5 | — | — |
| linux-oracle-6.8 | — | 6.8.0-1054.55~22.04.1 |
| linux-raspi | — | 7.0.0-1011.11 |
| linux-raspi-5.4 | — | — |
| linux-raspi-realtime | — | 6.8.0-2046.47 |
| linux-raspi2 | — | — |
| linux-realtime | — | 7.0.0-22.22.1 |
| linux-realtime-6.14 | — | — |
| linux-realtime-6.17 | — | 6.17.0-1014.16~24.04.1 |
| linux-realtime-6.8 | — | 6.8.1-1052.53~22.04.1 |
| linux-riscv | — | 7.0.0-22.22.1 |
| linux-riscv-5.11 | — | — |
| linux-riscv-5.15 | — | 5.15.0-1103.107~20.04.1 |
| linux-riscv-5.19 | — | — |
| linux-riscv-5.8 | — | — |
| linux-riscv-6.14 | — | — |
| linux-riscv-6.17 | — | 6.17.0-35.35.1~24.04.1 |
| linux-riscv-6.5 | — | — |
| linux-riscv-6.8 | — | 6.8.0-124.124~22.04.1 |
| linux-starfive-5.19 | — | — |
| linux-starfive-6.2 | — | — |
| linux-starfive-6.5 | — | — |
| linux-xilinx | — | 6.8.0-1032.33 |
| linux-xilinx-zynqmp | — | 5.15.0-1074.78 |
References
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