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Unscored CVE-2023-52615 EUVD-2023-57239GHSA-3wwr-wv4x-4gxg

hwrng: core - Fix page fault dead lock on mmap-ed hwrng

Published Mar 18, 2024 · Updated May 11, 2026 · Assigned by Linux

Vendor: Linux Product: Linux Package: linux Package: linux Package: linux-allwinner-5.19 Package: linux-aws Package: linux-aws-5.0 Package: linux-aws-5.11 Package: linux-aws-5.13 Package: linux-aws-5.15 Package: linux-aws-5.19 Package: linux-aws-5.3 Package: linux-aws-5.4 Package: linux-aws-5.8 Package: linux-aws-6.2 Package: linux-aws-6.5 Package: linux-aws-fips Package: linux-aws-hwe Package: linux-azure Package: linux-azure-4.15 Package: linux-azure-5.11 Package: linux-azure-5.13 Package: linux-azure-5.15 Package: linux-azure-5.19 Package: linux-azure-5.3 Package: linux-azure-5.4 Package: linux-azure-5.8 Package: linux-azure-6.2 Package: linux-azure-6.5 Package: linux-azure-edge Package: linux-azure-fde Package: linux-azure-fde-5.19 Package: linux-azure-fde-6.2 Package: linux-azure-fips Package: linux-bluefield Package: linux-fips Package: linux-gcp Package: linux-gcp-4.15 Package: linux-gcp-5.11 Package: linux-gcp-5.13 Package: linux-gcp-5.15 Package: linux-gcp-5.19 Package: linux-gcp-5.3 Package: linux-gcp-5.4 Package: linux-gcp-5.8 Package: linux-gcp-6.2 Package: linux-gcp-6.5 Package: linux-gcp-fips Package: linux-gke Package: linux-gke-4.15 Package: linux-gke-5.15 Package: linux-gke-5.4 Package: linux-gkeop Package: linux-gkeop-5.15 Package: linux-gkeop-5.4 Package: linux-hwe Package: linux-hwe-5.11 Package: linux-hwe-5.13 Package: linux-hwe-5.15 Package: linux-hwe-5.19 Package: linux-hwe-5.4 Package: linux-hwe-5.8 Package: linux-hwe-6.2 Package: linux-hwe-6.5 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-5.15 Package: linux-ibm-5.4 Package: linux-intel-5.13 Package: linux-intel-iot-realtime Package: linux-intel-iotg Package: linux-intel-iotg-5.15 Package: linux-iot Package: linux-kvm Package: linux-lowlatency Package: linux-lowlatency-hwe-5.15 Package: linux-lowlatency-hwe-5.19 Package: linux-lowlatency-hwe-6.2 Package: linux-lowlatency-hwe-6.5 Package: linux-lts-xenial Package: linux-nvidia Package: linux-nvidia-6.2 Package: linux-nvidia-6.5 Package: linux-nvidia-tegra Package: linux-nvidia-tegra-5.15 Package: linux-nvidia-tegra-igx Package: linux-oem Package: linux-oem-5.10 Package: linux-oem-5.13 Package: linux-oem-5.14 Package: linux-oem-5.17 Package: linux-oem-5.6 Package: linux-oem-6.0 Package: linux-oem-6.1 Package: linux-oem-6.5 Package: linux-oracle Package: linux-oracle-5.0 Package: linux-oracle-5.11 Package: linux-oracle-5.13 Package: linux-oracle-5.15 Package: linux-oracle-5.3 Package: linux-oracle-5.4 Package: linux-oracle-5.8 Package: linux-oracle-6.5 Package: linux-raspi Package: linux-raspi-5.4 Package: linux-raspi-realtime Package: linux-raspi2 Package: linux-realtime Package: linux-riscv Package: linux-riscv-5.11 Package: linux-riscv-5.15 Package: linux-riscv-5.19 Package: linux-riscv-5.8 Package: linux-riscv-6.5 Package: linux-starfive-5.19 Package: linux-starfive-6.2 Package: linux-starfive-6.5 Package: linux-vmware Package: linux-xilinx-zynqmp Platform: Linux Ecosystem: Debian Ecosystem: Ubuntu

Description

In the Linux kernel, the following vulnerability has been resolved:

hwrng: core - Fix page fault dead lock on mmap-ed hwrng

There is a dead-lock in the hwrng device read path. This triggers
when the user reads from /dev/hwrng into memory also mmap-ed from
/dev/hwrng. The resulting page fault triggers a recursive read
which then dead-locks.

Fix this by using a stack buffer when calling copy_to_user.

Affected products

VendorProductAffectedFixed
Linux Linux 2.6.33 4.19.307

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 linux 6.6.15-1 —
Debian 13 linux 6.6.15-1 —
Debian 12 linux 6.1.76-1 —
Debian 11 linux 5.10.216-1 DSA-5681-1
Debian 10 linux 4.19.316-1 DLA-3840-1
Debian 10 linux-5.10 5.10.216-1~deb10u1 DLA-3842-1
ReleasePackageFixed inAdvisory
Ubuntu Nvidia-BlueField 22.04 LTS linux-bluefield 5.15.0-1043.45 —
Ubuntu 22.04 LTS linux +1 5.15.0-106.116 USN-6766-1
Ubuntu 22.04 LTS linux-aws 5.15.0-1061.67 USN-6766-3
Ubuntu 22.04 LTS linux-aws-6.5 +1 6.5.0-1020.20~22.04.1 USN-6774-1
Ubuntu 22.04 LTS linux-azure 5.15.0-1063.72 USN-6766-1
Ubuntu 22.04 LTS linux-azure-6.5 6.5.0-1021.22~22.04.1 USN-6774-1
Ubuntu 22.04 LTS linux-azure-fde 5.15.0-1063.72.1 USN-6766-1
Ubuntu 22.04 LTS linux-gcp 5.15.0-1059.67 USN-6766-1
Ubuntu 22.04 LTS linux-gke +1 5.15.0-1058.63 USN-6766-1
Ubuntu 22.04 LTS linux-gkeop 5.15.0-1044.51 USN-6766-1
Ubuntu 22.04 LTS linux-hwe-6.5 6.5.0-35.35~22.04.1 USN-6774-1
Ubuntu 22.04 LTS linux-ibm +1 5.15.0-1054.57 USN-6766-2, USN-6766-1
Ubuntu 22.04 LTS linux-intel-iotg 5.15.0-1057.63 USN-6795-1
Ubuntu 22.04 LTS linux-nvidia 5.15.0-1054.55 USN-6766-1
Ubuntu 22.04 LTS linux-nvidia-6.5 6.5.0-1019.19 USN-6774-1
Ubuntu 22.04 LTS linux-nvidia-tegra 5.15.0-1026.26 —
Ubuntu 22.04 LTS linux-nvidia-tegra-igx 5.15.0-1015.15 —
Ubuntu 22.04 LTS linux-oem-6.5 6.5.0-1023.24 USN-6774-1
Ubuntu 22.04 LTS linux-oracle 5.15.0-1059.65 USN-6766-1
Ubuntu 22.04 LTS linux-oracle-6.5 6.5.0-1023.23~22.04.1 USN-6774-1
Ubuntu 22.04 LTS linux-riscv +21 No fix yet —
Ubuntu 22.04 LTS linux-riscv-6.5 +1 6.5.0-35.35.1~22.04.1 USN-6774-1
Ubuntu 22.04 LTS linux-starfive-6.5 6.5.0-1014.15~22.04.1 USN-6774-1
Ubuntu 22.04 LTS linux-xilinx-zynqmp 5.15.0-1030.34 —
Ubuntu 20.04 LTS linux 5.4.0-181.201 USN-6767-1
Ubuntu 20.04 LTS linux-aws 5.4.0-1124.134 USN-6767-1
Ubuntu 20.04 LTS linux-aws-5.15 5.15.0-1061.67~20.04.1 USN-6766-3
Ubuntu 20.04 LTS linux-azure 5.4.0-1129.136 USN-6767-1
Ubuntu 20.04 LTS linux-azure-5.15 5.15.0-1063.72~20.04.1 USN-6766-1
Ubuntu 20.04 LTS linux-azure-fde-5.15 5.15.0-1063.72~20.04.1.1 USN-6766-1
Ubuntu 20.04 LTS linux-bluefield 5.4.0-1084.91 USN-6767-2
Ubuntu 20.04 LTS linux-gcp 5.4.0-1128.137 USN-6767-1
Ubuntu 20.04 LTS linux-gcp-5.15 5.15.0-1059.67~20.04.1 USN-6766-1
Ubuntu 20.04 LTS linux-gke +26 No fix yet —
Ubuntu 20.04 LTS linux-gkeop 5.4.0-1091.95 USN-6767-1
Ubuntu 20.04 LTS linux-gkeop-5.15 5.15.0-1044.51~20.04.1 USN-6766-1
Ubuntu 20.04 LTS linux-hwe-5.15 +1 5.15.0-106.116~20.04.1 USN-6766-2, USN-6766-1
Ubuntu 20.04 LTS linux-ibm 5.4.0-1071.76 USN-6767-1
Ubuntu 20.04 LTS linux-ibm-5.15 5.15.0-1054.57~20.04.1 USN-6766-1
Ubuntu 20.04 LTS linux-intel-iotg-5.15 5.15.0-1058.64~20.04.1 USN-6828-1
Ubuntu 20.04 LTS linux-iot 5.4.0-1036.37 USN-6767-1
Ubuntu 20.04 LTS linux-kvm 5.4.0-1112.119 USN-6767-1
Ubuntu 20.04 LTS linux-nvidia-tegra-5.15 5.15.0-1027.27~20.04.1 —
Ubuntu 20.04 LTS linux-oracle 5.4.0-1123.132 USN-6767-1
Ubuntu 20.04 LTS linux-oracle-5.15 5.15.0-1059.65~20.04.1 USN-6766-1
Ubuntu 20.04 LTS linux-raspi 5.4.0-1108.120 USN-6767-1
Ubuntu 20.04 LTS linux-riscv-5.15 5.15.0-1057.61~20.04.1 —
Ubuntu 20.04 LTS linux-xilinx-zynqmp 5.4.0-1043.47 USN-6767-1
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Show 13 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro Realtime 24.04 LTS linux-raspi-realtime 6.8.0-2001.1 —
Ubuntu Pro Realtime 22.04 LTS linux-intel-iot-realtime 5.15.0-1054.56 —
Ubuntu Pro Realtime 22.04 LTS linux-realtime 5.15.0-1062.70 —
Ubuntu Pro FIPS 20.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS 18.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro FIPS 16.04 LTS linux-fips No fix yet —
Ubuntu Pro FIPS-updates 22.04 LTS linux-aws-fips 5.15.0-1061.67+fips1 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-azure-fips 5.15.0-1063.72+fips1 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-fips 5.15.0-106.116+fips1 —
Ubuntu Pro FIPS-updates 22.04 LTS linux-gcp-fips 5.15.0-1059.67+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-aws-fips 5.4.0-1124.134+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-azure-fips 5.4.0-1129.136+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-fips 5.4.0-1098.108 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-gcp-fips 5.4.0-1128.137+fips1 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-aws-fips 4.15.0-2108.114 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-azure-fips 4.15.0-2087.93 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-fips 4.15.0-1124.135 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-gcp-fips 4.15.0-2071.76 —
Ubuntu Pro FIPS-updates 16.04 LTS linux-fips 4.4.0-1102.109 —
Ubuntu Pro FIPS-preview 22.04 LTS linux-fips +3 No fix yet —
Ubuntu Pro 18.04 LTS linux 4.15.0-226.238 USN-6866-1
Ubuntu Pro 18.04 LTS linux-aws 4.15.0-1169.182 USN-6866-1
Ubuntu Pro 18.04 LTS linux-aws-5.4 5.4.0-1124.134~18.04.1 USN-6767-1
Ubuntu Pro 18.04 LTS linux-azure-4.15 4.15.0-1178.193 USN-6866-2
Ubuntu Pro 18.04 LTS linux-azure-5.4 5.4.0-1129.136~18.04.1 USN-6767-1
Ubuntu Pro 18.04 LTS linux-gcp-4.15 4.15.0-1163.180 USN-6866-1
Ubuntu Pro 18.04 LTS linux-gcp-5.4 5.4.0-1128.137~18.04.1 USN-6767-1
Ubuntu Pro 18.04 LTS linux-hwe-5.4 5.4.0-181.201~18.04.1 USN-6767-1
Ubuntu Pro 18.04 LTS linux-ibm-5.4 5.4.0-1071.76~18.04.1 USN-6767-1
Ubuntu Pro 18.04 LTS linux-kvm 4.15.0-1153.158 USN-6866-1
Ubuntu Pro 18.04 LTS linux-oracle 4.15.0-1132.143 USN-6866-1
Ubuntu Pro 18.04 LTS linux-oracle-5.4 5.4.0-1123.132~18.04.1 USN-6767-1
Ubuntu Pro 18.04 LTS linux-raspi-5.4 5.4.0-1108.120~18.04.1 USN-6767-1
Ubuntu Pro 16.04 LTS linux 4.4.0-256.290 USN-6865-1
Ubuntu Pro 16.04 LTS linux-aws 4.4.0-1171.186 USN-6865-1
Ubuntu Pro 16.04 LTS linux-aws-hwe 4.15.0-1169.182~16.04.1 USN-6866-1
Ubuntu Pro 16.04 LTS linux-azure 4.15.0-1178.193~16.04.1 USN-6866-2
Ubuntu Pro 16.04 LTS linux-gcp 4.15.0-1163.180~16.04.1 USN-6866-1
Ubuntu Pro 16.04 LTS linux-hwe 4.15.0-226.238~16.04.1 USN-6866-1
Ubuntu Pro 16.04 LTS linux-kvm 4.4.0-1134.144 USN-6865-1
Ubuntu Pro 16.04 LTS linux-oracle 4.15.0-1132.143~16.04.1 USN-6866-1
Ubuntu Pro 14.04 LTS linux No fix yet —
Ubuntu Pro 14.04 LTS linux-aws 4.4.0-1133.139 USN-6865-1
Ubuntu Pro 14.04 LTS linux-azure 4.15.0-1178.193~14.04.1 USN-6866-3
Ubuntu Pro 14.04 LTS linux-lts-xenial 4.4.0-256.290~14.04.1 USN-6865-1
ReleasePackageFixed inAdvisory
RHEL 9 bpftool 7.4.0-503.11.1.el9_5 RHSA-2024:9315
RHEL 9 rv +67 5.14.0-503.11.1.el9_5 RHSA-2024:9315
RHEL 8 kernel-rt +12 4.18.0-553.8.1.rt7.349.el8_10 RHSA-2024:4352
RHEL 8 perf +26 4.18.0-553.8.1.el8_10 RHSA-2024:4211
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
RHEL 9.4 EUS bpftool 7.3.0-427.59.1.el9_4 RHSA-2025:2490
RHEL 9.4 EUS rv +64 5.14.0-427.59.1.el9_4 RHSA-2025:2490

AlmaLinux

Errata ↗
ReleasePackageFixed inAdvisory
AlmaLinux 8 kernel-rt +11 4.18.0-553.8.1.rt7.349.el8_10 ALSA-2024:4352
AlmaLinux 8 perf +24 4.18.0-553.8.1.el8_10 ALSA-2024:4211

Rocky Linux

Errata ↗
ReleasePackageFixed inAdvisory
Rocky Linux 8 kernel 4.18.0-553.8.1.el8_10 RLSA-2024:4211
Rocky Linux 8 kernel-rt 4.18.0-553.8.1.rt7.349.el8_10 RLSA-2024:4352
ReleasePackageFixed inAdvisory
SLES 15 SP5 kernel-64kb +6 5.14.21-150500.55.59.1 SUSE-SU-2024:1480-1
SLES 15 SP5 kernel-azure +2 5.14.21-150500.33.48.1 SUSE-SU-2024:1490-1
SLES 15 SP5 kernel-default-base 5.14.21-150500.55.59.1.150500.6.25.7 SUSE-SU-2024:1480-1
SLES 12 SP5 kernel-azure +2 4.12.14-16.194.1 SUSE-SU-2024:2901-1
SLES 12 SP5 kernel-docs 4.12.14-122.225.2 SUSE-SU-2024:2940-1
SLES 12 SP5 kernel-syms +3 4.12.14-122.225.1 SUSE-SU-2024:2940-1
Show 6 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES for SAP 12 SP5 kernel-azure +2 4.12.14-16.194.1 SUSE-SU-2024:2901-1
SLES for SAP 12 SP5 kernel-syms +2 4.12.14-122.225.1 SUSE-SU-2024:2940-1
SLE Real Time 12 SP5 kernel-rt +3 4.12.14-10.197.1 SUSE-SU-2024:2892-1
SLE Micro 5.5 kernel-default 5.14.21-150500.55.59.1 SUSE-SU-2024:1480-1
SLE Micro 5.5 kernel-default-base 5.14.21-150500.55.59.1.150500.6.25.7 SUSE-SU-2024:1480-1
SLE Micro 5.5 kernel-rt +1 5.14.21-150500.13.47.1 SUSE-SU-2024:1466-1
SLE Live Patching 15 SP5 kernel-default 5.14.21-150500.55.59.1 SUSE-SU-2024:1480-1
SLE Live Patching 15 SP5 kernel-livepatch-SLE15-SP5-RT_Update_13 1-150500.11.3.1 SUSE-SU-2024:1466-1
SLE Live Patching 15 SP5 kernel-livepatch-SLE15-SP5_Update_12 1-150500.11.7.1 SUSE-SU-2024:1480-1
SLE Live Patching 12 SP5 kernel-default 4.12.14-122.225.1 SUSE-SU-2024:2940-1
SLE Live Patching 12 SP5 kgraft-patch-SLE12-SP5_Update_59 1-8.3.1 SUSE-SU-2024:2940-1
SUSE Real Time Module 15 SP5 kernel-rt +3 5.14.21-150500.13.47.1 SUSE-SU-2024:1466-1
ReleasePackageFixed inAdvisory
openSUSE Leap 15.5 dtb-aarch64 +10 5.14.21-150500.55.59.1 SUSE-SU-2024:1480-1
openSUSE Leap 15.5 kernel-azure +2 5.14.21-150500.33.48.1 SUSE-SU-2024:1490-1
openSUSE Leap 15.5 kernel-default-base 5.14.21-150500.55.59.1.150500.6.25.7 SUSE-SU-2024:1480-1
openSUSE Leap 15.5 kernel-rt +3 5.14.21-150500.13.47.1 SUSE-SU-2024:1466-1

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2023 kernel-livepatch-6.1.77-99.164 1.0-0.amzn2023 ALAS2023-2024-517
Amazon Linux 2023 perf +14 6.1.77-99.164.amzn2023 ALAS2023-2024-517
Amazon Linux 2 kernel-livepatch-4.14.343-259.562 1.0-0.amzn2 ALAS2-2024-2549
Amazon Linux 2 perf +8 4.14.343-259.562.amzn2 ALAS2-2024-2549

Oracle Linux

ReleasePackageFixed inAdvisory
Oracle Linux 9 bpftool 7.4.0-503.11.1.el9_5 ELSA-2024-9315
Oracle Linux 9 rv +28 5.14.0-503.11.1.el9_5 ELSA-2024-9315
Oracle Linux 8 perf +19 4.18.0-553.8.1.el8_10 ELSA-2024-4211
Oracle Linux 7 kernel-uek +5 4.1.12-124.89.4.el7uek ELSA-2024-12606

Advisories 38

References