First published: Tue Feb 20 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: uio: Fix use-after-free in uio_open core-1 core-2 ------------------------------------------------------- uio_unregister_device uio_open idev = idr_find() device_unregister(&idev->dev) put_device(&idev->dev) uio_device_release get_device(&idev->dev) kfree(idev) uio_free_minor(minor) uio_release put_device(&idev->dev) kfree(idev) ------------------------------------------------------- In the core-1 uio_unregister_device(), the device_unregister will kfree idev when the idev->dev kobject ref is 1. But after core-1 device_unregister, put_device and before doing kfree, the core-2 may get_device. Then: 1. After core-1 kfree idev, the core-2 will do use-after-free for idev. 2. When core-2 do uio_release and put_device, the idev will be double freed. To address this issue, we can get idev atomic & inc idev reference with minor_lock. <a href="https://git.kernel.org/stable/c/0c9ae0b8605078eafc3bea053cc78791e97ba2e2">https://git.kernel.org/stable/c/0c9ae0b8605078eafc3bea053cc78791e97ba2e2</a> <a href="https://git.kernel.org/stable/c/17a8519cb359c3b483fb5c7367efa9a8a508bdea">https://git.kernel.org/stable/c/17a8519cb359c3b483fb5c7367efa9a8a508bdea</a> <a href="https://git.kernel.org/stable/c/3174e0f7de1ba392dc191625da83df02d695b60c">https://git.kernel.org/stable/c/3174e0f7de1ba392dc191625da83df02d695b60c</a> <a href="https://git.kernel.org/stable/c/35f102607054faafe78d2a6994b18d5d9d6e92ad">https://git.kernel.org/stable/c/35f102607054faafe78d2a6994b18d5d9d6e92ad</a> <a href="https://git.kernel.org/stable/c/5cf604ee538ed0c467abe3b4cda5308a6398f0f7">https://git.kernel.org/stable/c/5cf604ee538ed0c467abe3b4cda5308a6398f0f7</a> <a href="https://git.kernel.org/stable/c/5e0be1229ae199ebb90b33102f74a0f22d152570">https://git.kernel.org/stable/c/5e0be1229ae199ebb90b33102f74a0f22d152570</a> <a href="https://git.kernel.org/stable/c/913205930da6213305616ac539447702eaa85e41">https://git.kernel.org/stable/c/913205930da6213305616ac539447702eaa85e41</a> <a href="https://git.kernel.org/stable/c/e93da893d52d82d57fc0db2ca566024e0f26ff50">https://git.kernel.org/stable/c/e93da893d52d82d57fc0db2ca566024e0f26ff50</a>
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Software | Affected Version | How to fix |
---|---|---|
Linux Linux kernel | >4.18.0<4.19.306 | |
Linux Linux kernel | >=4.20.0<5.4.268 | |
Linux Linux kernel | >=5.5.0<5.10.209 | |
Linux Linux kernel | >=5.11.0<5.15.148 | |
Linux Linux kernel | >=5.16.0<6.1.74 | |
Linux Linux kernel | >=6.2.0<6.6.13 | |
Linux Linux kernel | >=6.7.0<6.7.1 | |
Linux Linux kernel | =4.18 | |
Linux Linux kernel | =4.18-rc5 | |
Linux Linux kernel | =4.18-rc6 | |
Linux Linux kernel | =4.18-rc7 | |
Linux Linux kernel | =4.18-rc8 | |
ubuntu/linux | <4.15.0-225.237 | 4.15.0-225.237 |
ubuntu/linux | <5.4.0-176.196 | 5.4.0-176.196 |
ubuntu/linux | <5.15.0-102.112 | 5.15.0-102.112 |
ubuntu/linux | <6.8~ | 6.8~ |
ubuntu/linux-aws | <4.15.0-1168.181 | 4.15.0-1168.181 |
ubuntu/linux-aws | <5.4.0-1122.132 | 5.4.0-1122.132 |
ubuntu/linux-aws | <5.15.0-1057.63 | 5.15.0-1057.63 |
ubuntu/linux-aws | <6.8~ | 6.8~ |
ubuntu/linux-aws-5.15 | <5.15.0-1057.63~20.04.1 | 5.15.0-1057.63~20.04.1 |
ubuntu/linux-aws-5.15 | <6.8~ | 6.8~ |
ubuntu/linux-aws-5.4 | <6.8~ | 6.8~ |
ubuntu/linux-aws-6.5 | <6.8~ | 6.8~ |
ubuntu/linux-aws-fips | <6.8~ | 6.8~ |
ubuntu/linux-aws-hwe | <6.8~ | 6.8~ |
ubuntu/linux-aws-hwe | <4.15.0-1168.181~16.04.1 | 4.15.0-1168.181~16.04.1 |
ubuntu/linux-azure | <5.4.0-1127.134 | 5.4.0-1127.134 |
ubuntu/linux-azure | <5.15.0-1060.69 | 5.15.0-1060.69 |
ubuntu/linux-azure | <4.15.0-1177.192~14.04.1 | 4.15.0-1177.192~14.04.1 |
ubuntu/linux-azure | <6.8~ | 6.8~ |
ubuntu/linux-azure | <4.15.0-1177.192~16.04.1 | 4.15.0-1177.192~16.04.1 |
ubuntu/linux-azure-4.15 | <4.15.0-1177.192 | 4.15.0-1177.192 |
ubuntu/linux-azure-4.15 | <6.8~ | 6.8~ |
ubuntu/linux-azure-5.15 | <5.15.0-1060.69~20.04.1 | 5.15.0-1060.69~20.04.1 |
ubuntu/linux-azure-5.15 | <6.8~ | 6.8~ |
ubuntu/linux-azure-5.4 | <6.8~ | 6.8~ |
ubuntu/linux-azure-6.5 | <6.8~ | 6.8~ |
ubuntu/linux-azure-fde | <5.15.0-1060.69.1 | 5.15.0-1060.69.1 |
ubuntu/linux-azure-fde | <6.8~ | 6.8~ |
ubuntu/linux-azure-fde-5.15 | <5.15.0-1060.69~20.04.1.1 | 5.15.0-1060.69~20.04.1.1 |
ubuntu/linux-azure-fde-5.15 | <6.8~ | 6.8~ |
ubuntu/linux-azure-fips | <6.8~ | 6.8~ |
ubuntu/linux-bluefield | <5.4.0-1082.89 | 5.4.0-1082.89 |
ubuntu/linux-bluefield | <6.8~ | 6.8~ |
ubuntu/linux-fips | <6.8~ | 6.8~ |
ubuntu/linux-gcp | <5.4.0-1126.135 | 5.4.0-1126.135 |
ubuntu/linux-gcp | <5.15.0-1055.63 | 5.15.0-1055.63 |
ubuntu/linux-gcp | <6.8~ | 6.8~ |
ubuntu/linux-gcp | <4.15.0-1162.179~16.04.1 | 4.15.0-1162.179~16.04.1 |
ubuntu/linux-gcp-4.15 | <4.15.0-1162.179 | 4.15.0-1162.179 |
ubuntu/linux-gcp-4.15 | <6.8~ | 6.8~ |
ubuntu/linux-gcp-5.15 | <5.15.0-1055.63~20.04.1 | 5.15.0-1055.63~20.04.1 |
ubuntu/linux-gcp-5.15 | <6.8~ | 6.8~ |
ubuntu/linux-gcp-5.4 | <6.8~ | 6.8~ |
ubuntu/linux-gcp-6.5 | <6.8~ | 6.8~ |
ubuntu/linux-gcp-fips | <6.8~ | 6.8~ |
ubuntu/linux-gke | <5.15.0-1054.59 | 5.15.0-1054.59 |
ubuntu/linux-gke | <6.8~ | 6.8~ |
ubuntu/linux-gkeop | <5.4.0-1089.93 | 5.4.0-1089.93 |
ubuntu/linux-gkeop | <5.15.0-1040.46 | 5.15.0-1040.46 |
ubuntu/linux-gkeop | <6.8~ | 6.8~ |
ubuntu/linux-gkeop-5.15 | <5.15.0-1040.46~20.04.1 | 5.15.0-1040.46~20.04.1 |
ubuntu/linux-gkeop-5.15 | <6.8~ | 6.8~ |
ubuntu/linux-hwe | <6.8~ | 6.8~ |
ubuntu/linux-hwe | <4.15.0-225.237~16.04.1 | 4.15.0-225.237~16.04.1 |
ubuntu/linux-hwe-5.15 | <5.15.0-102.112~20.04.1 | 5.15.0-102.112~20.04.1 |
ubuntu/linux-hwe-5.15 | <6.8~ | 6.8~ |
ubuntu/linux-hwe-5.4 | <6.8~ | 6.8~ |
ubuntu/linux-hwe-6.5 | <6.8~ | 6.8~ |
ubuntu/linux-ibm | <5.4.0-1069.74 | 5.4.0-1069.74 |
ubuntu/linux-ibm | <5.15.0-1050.53 | 5.15.0-1050.53 |
ubuntu/linux-ibm | <6.8~ | 6.8~ |
ubuntu/linux-ibm-5.15 | <5.15.0-1050.53~20.04.1 | 5.15.0-1050.53~20.04.1 |
ubuntu/linux-ibm-5.15 | <6.8~ | 6.8~ |
ubuntu/linux-ibm-5.4 | <6.8~ | 6.8~ |
ubuntu/linux-intel | <6.8~ | 6.8~ |
ubuntu/linux-intel-iot-realtime | <6.8~ | 6.8~ |
ubuntu/linux-intel-iotg | <5.15.0-1052.58 | 5.15.0-1052.58 |
ubuntu/linux-intel-iotg | <6.8~ | 6.8~ |
ubuntu/linux-intel-iotg-5.15 | <5.15.0-1052.58~20.04.1 | 5.15.0-1052.58~20.04.1 |
ubuntu/linux-intel-iotg-5.15 | <6.8~ | 6.8~ |
ubuntu/linux-iot | <5.4.0-1034.35 | 5.4.0-1034.35 |
ubuntu/linux-iot | <6.8~ | 6.8~ |
ubuntu/linux-kvm | <4.15.0-1152.157 | 4.15.0-1152.157 |
ubuntu/linux-kvm | <5.4.0-1110.117 | 5.4.0-1110.117 |
ubuntu/linux-kvm | <5.15.0-1054.59 | 5.15.0-1054.59 |
ubuntu/linux-kvm | <6.8~ | 6.8~ |
ubuntu/linux-laptop | <6.8~ | 6.8~ |
ubuntu/linux-lowlatency | <5.15.0-102.112 | 5.15.0-102.112 |
ubuntu/linux-lowlatency | <6.8~ | 6.8~ |
ubuntu/linux-lowlatency-hwe-5.15 | <5.15.0-102.112~20.04.1 | 5.15.0-102.112~20.04.1 |
ubuntu/linux-lowlatency-hwe-5.15 | <6.8~ | 6.8~ |
ubuntu/linux-lowlatency-hwe-6.5 | <6.8~ | 6.8~ |
ubuntu/linux-lowlatency-hwe-6.8 | <6.8~ | 6.8~ |
ubuntu/linux-lts-xenial | <6.8~ | 6.8~ |
ubuntu/linux-nvidia | <5.15.0-1048.48 | 5.15.0-1048.48 |
ubuntu/linux-nvidia | <6.8~ | 6.8~ |
ubuntu/linux-nvidia-6.5 | <6.5.0-1014.14 | 6.5.0-1014.14 |
ubuntu/linux-nvidia-6.5 | <6.8~ | 6.8~ |
ubuntu/linux-nvidia-6.8 | <6.8~ | 6.8~ |
ubuntu/linux-nvidia-lowlatency | <6.8~ | 6.8~ |
ubuntu/linux-oem-6.1 | <6.1.0-1035.35 | 6.1.0-1035.35 |
ubuntu/linux-oem-6.5 | <6.8~ | 6.8~ |
ubuntu/linux-oem-6.8 | <6.8~ | 6.8~ |
ubuntu/linux-oracle | <4.15.0-1131.142 | 4.15.0-1131.142 |
ubuntu/linux-oracle | <5.4.0-1121.130 | 5.4.0-1121.130 |
ubuntu/linux-oracle | <5.15.0-1055.61 | 5.15.0-1055.61 |
ubuntu/linux-oracle | <6.8~ | 6.8~ |
ubuntu/linux-oracle | <4.15.0-1131.142~16.04.1 | 4.15.0-1131.142~16.04.1 |
ubuntu/linux-oracle-5.15 | <5.15.0-1055.61~20.04.1 | 5.15.0-1055.61~20.04.1 |
ubuntu/linux-oracle-5.15 | <6.8~ | 6.8~ |
ubuntu/linux-oracle-5.4 | <6.8~ | 6.8~ |
ubuntu/linux-oracle-6.5 | <6.8~ | 6.8~ |
ubuntu/linux-raspi | <5.4.0-1106.118 | 5.4.0-1106.118 |
ubuntu/linux-raspi | <5.15.0-1050.53 | 5.15.0-1050.53 |
ubuntu/linux-raspi | <6.8~ | 6.8~ |
ubuntu/linux-raspi-5.4 | <6.8~ | 6.8~ |
ubuntu/linux-raspi-realtime | <6.8~ | 6.8~ |
ubuntu/linux-realtime | <6.8~ | 6.8~ |
ubuntu/linux-riscv | <6.8~ | 6.8~ |
ubuntu/linux-riscv-5.15 | <5.15.0-1053.57~20.04.1 | 5.15.0-1053.57~20.04.1 |
ubuntu/linux-riscv-5.15 | <6.8~ | 6.8~ |
ubuntu/linux-riscv-6.5 | <6.8~ | 6.8~ |
ubuntu/linux-riscv-6.8 | <6.8~ | 6.8~ |
ubuntu/linux-starfive | <6.8~ | 6.8~ |
ubuntu/linux-starfive-6.5 | <6.8~ | 6.8~ |
ubuntu/linux-xilinx-zynqmp | <5.4.0-1041.45 | 5.4.0-1041.45 |
ubuntu/linux-xilinx-zynqmp | <5.15.0-1030.34 | 5.15.0-1030.34 |
ubuntu/linux-xilinx-zynqmp | <6.8~ | 6.8~ |
debian/linux | 5.10.223-1 6.1.106-3 6.1.99-1 6.10.6-1 6.10.7-1 |
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(Appears in the following advisories)