medium
4.7
CWE
416 476 362
Advisory Published
CVE Published
Updated

CVE-2023-0468: Use After Free

First published: Tue Jan 24 2023(Updated: )

A use-after-free flaw was found in io_uring/poll.c in io_poll_check_events in the io_uring subcomponent in the Linux Kernel due to a race condition of poll_refs. This flaw may cause a NULL pointer dereference.

Credit: secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
Linux Linux kernel<6.1
Linux Linux kernel=6.1
Linux Linux kernel=6.1-rc1
Linux Linux kernel=6.1-rc2
Linux Linux kernel=6.1-rc3
Linux Linux kernel=6.1-rc4
Linux Linux kernel=6.1-rc5
Linux Linux kernel=6.1-rc6
redhat/Kernel<6.1
6.1
debian/linux
5.10.218-1
5.10.221-1
6.1.94-1
6.1.99-1
6.9.10-1
6.9.12-1
ubuntu/linux<5.15.0-67.74
5.15.0-67.74
ubuntu/linux<5.19.0-40.41
5.19.0-40.41
ubuntu/linux<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-aws<5.15.0-1031.35
5.15.0-1031.35
ubuntu/linux-aws<5.19.0-1023.24
5.19.0-1023.24
ubuntu/linux-aws<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-aws-5.0<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-aws-5.15<5.15.0-1031.35~20.04.1
5.15.0-1031.35~20.04.1
ubuntu/linux-aws-5.15<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-aws-5.4<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-aws-6.5<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-aws-fips<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-aws-hwe<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-azure<5.15.0-1034.41
5.15.0-1034.41
ubuntu/linux-azure<5.19.0-1023.24
5.19.0-1023.24
ubuntu/linux-azure<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-azure-4.15<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-azure-5.15<5.15.0-1034.41~20.04.1
5.15.0-1034.41~20.04.1
ubuntu/linux-azure-5.15<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-azure-5.19<5.19.0-1023.24~22.04.1
5.19.0-1023.24~22.04.1
ubuntu/linux-azure-5.4<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-azure-6.5<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-azure-edge<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-azure-fde<5.15.0-1034.41.1
5.15.0-1034.41.1
ubuntu/linux-azure-fde<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-azure-fde-5.15<5.15.0-1034.41~20.04.1.2
5.15.0-1034.41~20.04.1.2
ubuntu/linux-azure-fde-5.15<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-azure-fde-5.19<5.19.0-1023.24~22.04.1
5.19.0-1023.24~22.04.1
ubuntu/linux-azure-fde-5.19<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-azure-fips<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-bluefield<5.15.0-1014.16
5.15.0-1014.16
ubuntu/linux-bluefield<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-dell300x<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-fips<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-gcp<5.15.0-1030.37
5.15.0-1030.37
ubuntu/linux-gcp<5.19.0-1020.22
5.19.0-1020.22
ubuntu/linux-gcp<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-gcp-4.15<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-gcp-5.15<5.15.0-1030.37~20.04.1
5.15.0-1030.37~20.04.1
ubuntu/linux-gcp-5.15<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-gcp-5.4<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-gcp-6.5<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-gcp-fips<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-gke<5.15.0-1028.33
5.15.0-1028.33
ubuntu/linux-gke<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-gke-4.15<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-gke-5.0<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-gke-5.15<5.15.0-1028.33~20.04.1
5.15.0-1028.33~20.04.1
ubuntu/linux-gke-5.15<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-gke-5.4<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-gkeop<5.15.0-1016.21
5.15.0-1016.21
ubuntu/linux-gkeop<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-gkeop-5.15<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-gkeop-5.4<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-hwe<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-hwe-5.15<5.15.0-67.74~20.04.1
5.15.0-67.74~20.04.1
ubuntu/linux-hwe-5.15<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-hwe-5.19<5.19.0-40.41~22.04.1
5.19.0-40.41~22.04.1
ubuntu/linux-hwe-5.4<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-hwe-6.5<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-hwe-edge<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-ibm<5.15.0-1026.29
5.15.0-1026.29
ubuntu/linux-ibm<5.19.0-1021.23
5.19.0-1021.23
ubuntu/linux-ibm<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-ibm-5.15<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-ibm-5.4<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-intel<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-intel-5.13<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-intel-iotg<5.15.0-1026.31
5.15.0-1026.31
ubuntu/linux-intel-iotg<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-intel-iotg-5.15<5.15.0-1026.31~20.04.1
5.15.0-1026.31~20.04.1
ubuntu/linux-intel-iotg-5.15<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-iot<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-kvm<5.15.0-1029.34
5.15.0-1029.34
ubuntu/linux-kvm<5.19.0-1021.22
5.19.0-1021.22
ubuntu/linux-kvm<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-laptop<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-lowlatency<5.15.0-67.74
5.15.0-67.74
ubuntu/linux-lowlatency<5.19.0-1022.23
5.19.0-1022.23
ubuntu/linux-lowlatency<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-lowlatency-hwe-5.15<5.15.0-67.74~20.04.1
5.15.0-67.74~20.04.1
ubuntu/linux-lowlatency-hwe-5.15<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-lowlatency-hwe-5.19<5.19.0-1022.23~22.04.1
5.19.0-1022.23~22.04.1
ubuntu/linux-lowlatency-hwe-5.19<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-lowlatency-hwe-6.5<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-lts-xenial<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-nvidia<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-nvidia-6.5<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-nvidia-6.8<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-nvidia-lowlatency<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-oem<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-oem-5.10<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-oem-5.14<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-oem-5.17<5.17.0-1031.32
5.17.0-1031.32
ubuntu/linux-oem-5.17<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-oem-5.6<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-oem-6.0<6.0.0-1015.15
6.0.0-1015.15
ubuntu/linux-oem-6.0<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-oem-6.1<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-oem-6.5<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-oem-6.8<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-oem-osp1<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-oracle<5.15.0-1030.36
5.15.0-1030.36
ubuntu/linux-oracle<5.19.0-1020.23
5.19.0-1020.23
ubuntu/linux-oracle<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-oracle-5.0<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-oracle-5.13<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-oracle-5.15<5.15.0-1030.36~20.04.1
5.15.0-1030.36~20.04.1
ubuntu/linux-oracle-5.15<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-oracle-5.4<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-oracle-6.5<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-raspi<5.15.0-1025.27
5.15.0-1025.27
ubuntu/linux-raspi<5.19.0-1016.23
5.19.0-1016.23
ubuntu/linux-raspi<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-raspi-5.4<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-raspi2<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-riscv<5.19.0-1016.17
5.19.0-1016.17
ubuntu/linux-riscv<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-riscv-5.15<5.15.0-1030.34~20.04.1
5.15.0-1030.34~20.04.1
ubuntu/linux-riscv-5.15<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-riscv-6.5<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-snapdragon<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-starfive<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-starfive-6.5<6.1~<5.15.82
6.1~
5.15.82
ubuntu/linux-xilinx-zynqmp<6.1~<5.15.82
6.1~
5.15.82

Remedy

https://bugzilla.redhat.com/show_bug.cgi?id=2164024

Remedy

https://git.kernel.org/linus/aa43477b040251f451db0d844073ac00a8ab66ee

Remedy

https://git.kernel.org/linus/a26a35e9019fd70bf3cf647dcfdae87abc7bacea

Remedy

https://git.kernel.org/linus/12ad3d2d6c5b0131a6052de91360849e3e154846

Remedy

https://git.kernel.org/linus/f770fba096a6d49dfb27b5880132bb0cc316ae2a

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