7.8
CWE
416 362
Advisory Published
Updated

CVE-2023-1872: Use After Free

First published: Wed Apr 12 2023(Updated: )

A use-after-free vulnerability in the Linux Kernel io_uring system can be exploited to achieve local privilege escalation. The io_file_get_fixed function lacks the presence of ctx->uring_lock which can lead to a Use-After-Free vulnerability due a race condition with fixed files getting unregistered. We recommend upgrading past commit da24142b1ef9fd5d36b76e36bab328a5b27523e8.

Credit: cve-coordination@google.com cve-coordination@google.com cve-coordination@google.com

Affected SoftwareAffected VersionHow to fix
Linux Linux kernel<5.17
Linux Linux kernel>=5.7<5.17
Debian Debian Linux=10.0
ubuntu/linux<5.15.0-71.78
5.15.0-71.78
ubuntu/linux-aws<5.15.0-1035.39
5.15.0-1035.39
ubuntu/linux-aws-5.15<5.15.0-1035.39~20.04.1
5.15.0-1035.39~20.04.1
ubuntu/linux-azure<5.15.0-1037.44
5.15.0-1037.44
ubuntu/linux-azure-5.15<5.15.0-1037.44~20.04.1
5.15.0-1037.44~20.04.1
ubuntu/linux-bluefield<5.15.0-1015.17
5.15.0-1015.17
ubuntu/linux-gcp-5.15<5.15.0-1033.41~20.04.1
5.15.0-1033.41~20.04.1
ubuntu/linux-gke<5.15.0-1032.37
5.15.0-1032.37
ubuntu/linux-gke-5.15<5.15.0-1032.37~20.04.1
5.15.0-1032.37~20.04.1
ubuntu/linux-gkeop<5.15.0-1019.24
5.15.0-1019.24
ubuntu/linux-hwe-5.15<5.15.0-71.78~20.04.1
5.15.0-71.78~20.04.1
ubuntu/linux-ibm<5.15.0-1029.32
5.15.0-1029.32
ubuntu/linux-intel-iotg<5.15.0-1030.35
5.15.0-1030.35
ubuntu/linux-intel-iotg-5.15<5.15.0-1030.35~20.04.1
5.15.0-1030.35~20.04.1
ubuntu/linux-kvm<5.15.0-1032.37
5.15.0-1032.37
ubuntu/linux-lowlatency<5.15.0-71.78
5.15.0-71.78
ubuntu/linux-lowlatency-hwe-5.15<5.15.0-71.78~20.04.1
5.15.0-71.78~20.04.1
ubuntu/linux-oem-5.17<5.17.0-1004.4
5.17.0-1004.4
ubuntu/linux-oracle<5.15.0-1034.40
5.15.0-1034.40
ubuntu/linux-oracle-5.15<5.15.0-1034.40~20.04.1
5.15.0-1034.40~20.04.1
ubuntu/linux-raspi<5.15.0-1028.30
5.15.0-1028.30
debian/linux
5.10.218-1
6.1.94-1
6.1.90-1
6.9.8-1
6.9.9-1

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