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Unscored CVE-2022-50245 EUVD-2022-55507GHSA-v4vx-qxh4-8ww4

rapidio: fix possible UAF when kfifo_alloc() fails

Published Sep 15, 2025 · 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-6.11 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-6.11 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-6.11 Package: linux-hwe-6.2 Package: linux-hwe-6.5 Package: linux-hwe-edge Package: linux-ibm Package: linux-ibm-5.4 Package: linux-intel 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-6.11 Package: linux-lowlatency-hwe-6.2 Package: linux-lowlatency-hwe-6.5 Package: linux-nvidia Package: linux-nvidia-6.2 Package: linux-nvidia-6.5 Package: linux-nvidia-tegra-5.15 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-6.11 Package: linux-oem-6.5 Package: linux-oem-6.8 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:

rapidio: fix possible UAF when kfifo_alloc() fails

If kfifo_alloc() fails in mport_cdev_open(), goto err_fifo and just free
priv. But priv is still in the chdev->file_list, then list traversal
may cause UAF. This fixes the following smatch warning:

drivers/rapidio/devices/rio_mport_cdev.c:1930 mport_cdev_open() warn: '&priv->list' not removed from list

Affected products

VendorProductAffectedFixed
Linux Linux 4.6 4.9.337

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.

Debian

Security tracker ↗
ReleasePackageFixed inAdvisory
Debian 14 linux 6.1.4-1 —
Debian 13 linux 6.1.4-1 —
Debian 12 linux 6.1.4-1 —

Ubuntu

Security tracker ↗
ReleasePackageFixed inAdvisory
Ubuntu Nvidia-BlueField 22.04 LTS linux-bluefield 5.15.0-1015.17 —
Ubuntu 24.04 LTS linux-intel +9 No fix yet —
Ubuntu 22.04 LTS linux +1 5.15.0-69.76 —
Ubuntu 22.04 LTS linux-aws 5.15.0-1033.37 —
Ubuntu 22.04 LTS linux-azure 5.15.0-1035.42 —
Ubuntu 22.04 LTS linux-azure-fde 5.15.0-1035.42.1 —
Ubuntu 22.04 LTS linux-gcp 5.15.0-1031.38 —
Ubuntu 22.04 LTS linux-gke +1 5.15.0-1030.35 —
Ubuntu 22.04 LTS linux-gkeop 5.15.0-1017.22 —
Ubuntu 22.04 LTS linux-ibm 5.15.0-1027.30 —
Ubuntu 22.04 LTS linux-intel-iotg 5.15.0-1027.32 —
Ubuntu 22.04 LTS linux-nvidia 5.15.0-1023.23 —
Ubuntu 22.04 LTS linux-oracle 5.15.0-1032.38 —
Ubuntu 22.04 LTS linux-raspi 5.15.0-1026.28 —
Ubuntu 22.04 LTS linux-riscv +32 No fix yet —
Ubuntu 20.04 LTS linux 5.4.0-144.161 —
Ubuntu 20.04 LTS linux-aws 5.4.0-1097.105 —
Ubuntu 20.04 LTS linux-aws-5.15 5.15.0-1033.37~20.04.1 —
Ubuntu 20.04 LTS linux-azure 5.4.0-1104.110 —
Ubuntu 20.04 LTS linux-azure-5.15 5.15.0-1035.42~20.04.1 —
Ubuntu 20.04 LTS linux-bluefield 5.4.0-1059.65 —
Ubuntu 20.04 LTS linux-gcp 5.4.0-1101.110 —
Ubuntu 20.04 LTS linux-gcp-5.15 5.15.0-1031.38~20.04.1 —
Ubuntu 20.04 LTS linux-gke +28 No fix yet —
Ubuntu 20.04 LTS linux-hwe-5.15 +1 5.15.0-69.76~20.04.1 —
Ubuntu 20.04 LTS linux-ibm 5.4.0-1045.50 —
Ubuntu 20.04 LTS linux-intel-iotg-5.15 5.15.0-1027.32~20.04.1 —
Ubuntu 20.04 LTS linux-iot 5.4.0-1013.15 —
Ubuntu 20.04 LTS linux-kvm 5.4.0-1087.93 —
Ubuntu 20.04 LTS linux-nvidia-tegra-5.15 5.15.0-1014.14~20.04.1 —
Ubuntu 20.04 LTS linux-oracle 5.4.0-1094.103 —
Ubuntu 20.04 LTS linux-oracle-5.15 5.15.0-1032.38~20.04.1 —
Ubuntu 20.04 LTS linux-raspi 5.4.0-1081.92 —
Ubuntu 20.04 LTS linux-riscv-5.15 5.15.0-1030.34~20.04.1 —
Ubuntu 20.04 LTS linux-xilinx-zynqmp 5.4.0-1022.26 —
Ubuntu 18.04 LTS linux 4.15.0-208.220 —
Ubuntu 18.04 LTS linux-aws 4.15.0-1153.166 —
Ubuntu 18.04 LTS linux-aws-5.4 5.4.0-1097.105~18.04.1 —
Ubuntu 18.04 LTS linux-azure-4.15 4.15.0-1162.177 —
Ubuntu 18.04 LTS linux-azure-5.4 5.4.0-1104.110~18.04.1 —
Ubuntu 18.04 LTS linux-gcp +14 No fix yet —
Ubuntu 18.04 LTS linux-gcp-4.15 4.15.0-1147.163 —
Ubuntu 18.04 LTS linux-gcp-5.4 5.4.0-1101.110~18.04.1 —
Ubuntu 18.04 LTS linux-hwe-5.4 5.4.0-144.161~18.04.1 —
Ubuntu 18.04 LTS linux-ibm-5.4 5.4.0-1045.50~18.04.1 —
Ubuntu 18.04 LTS linux-kvm 4.15.0-1137.142 —
Ubuntu 18.04 LTS linux-oracle 4.15.0-1116.127 —
Ubuntu 18.04 LTS linux-oracle-5.4 5.4.0-1094.103~18.04.1 —
Ubuntu 18.04 LTS linux-raspi-5.4 5.4.0-1081.92~18.04.1 —
Show 8 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 16.04 LTS linux-hwe-edge No fix yet —
Ubuntu Pro Realtime 22.04 LTS linux-intel-iot-realtime 5.15.0-1023.28 —
Ubuntu Pro Realtime 22.04 LTS linux-realtime 5.15.0-1034.37 —
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-updates 20.04 LTS linux-aws-fips 5.4.0-1099.107+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-azure-fips 5.4.0-1104.110+fips1 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-fips 5.4.0-1073.82 —
Ubuntu Pro FIPS-updates 20.04 LTS linux-gcp-fips 5.4.0-1101.110+fips1 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-aws-fips 4.15.0-2092.98 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-azure-fips 4.15.0-2071.77 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-fips 4.15.0-1108.119 —
Ubuntu Pro FIPS-updates 18.04 LTS linux-gcp-fips 4.15.0-2055.60 —
Ubuntu Pro 16.04 LTS linux-aws-hwe 4.15.0-1153.166~16.04.1 —
Ubuntu Pro 16.04 LTS linux-azure 4.15.0-1162.177~16.04.1 —
Ubuntu Pro 16.04 LTS linux-gcp 4.15.0-1147.163~16.04.1 —
Ubuntu Pro 16.04 LTS linux-hwe 4.15.0-208.219~16.04.1 —
Ubuntu Pro 16.04 LTS linux-oracle 4.15.0-1116.127~16.04.1 —
Ubuntu Pro 14.04 LTS linux-azure 4.15.0-1162.177~14.04.1 —

Advisories 1

References