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Ubuntu: (Multiple Advisories) (CVE-2023-1583): Linux kernel (OEM) vulnerabilities

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Ubuntu: (Multiple Advisories) (CVE-2023-1583): Linux kernel (OEM) vulnerabilities

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
03/24/2023
Created
05/05/2023
Added
04/21/2023
Modified
06/23/2023

Description

A NULL pointer dereference was found in io_file_bitmap_get in io_uring/filetable.c in the io_uring sub-component in the Linux Kernel. When fixed files are unregistered, some context information (file_alloc_{start,end} and alloc_hint) is not cleared. A subsequent request that has auto index selection enabled via IORING_FILE_INDEX_ALLOC can cause a NULL pointer dereference. An unprivileged user can use the flaw to cause a system crash.

Solution(s)

  • ubuntu-upgrade-linux-image-6-1-0-1009-oem
  • ubuntu-upgrade-linux-image-6-2-0-1003-ibm
  • ubuntu-upgrade-linux-image-6-2-0-1005-aws
  • ubuntu-upgrade-linux-image-6-2-0-1005-azure
  • ubuntu-upgrade-linux-image-6-2-0-1005-lowlatency
  • ubuntu-upgrade-linux-image-6-2-0-1005-lowlatency-64k
  • ubuntu-upgrade-linux-image-6-2-0-1005-oracle
  • ubuntu-upgrade-linux-image-6-2-0-1006-kvm
  • ubuntu-upgrade-linux-image-6-2-0-1006-raspi
  • ubuntu-upgrade-linux-image-6-2-0-1006-raspi-nolpae
  • ubuntu-upgrade-linux-image-6-2-0-1007-gcp
  • ubuntu-upgrade-linux-image-6-2-0-23-generic
  • ubuntu-upgrade-linux-image-6-2-0-23-generic-64k
  • ubuntu-upgrade-linux-image-6-2-0-23-generic-lpae
  • ubuntu-upgrade-linux-image-aws
  • ubuntu-upgrade-linux-image-azure
  • ubuntu-upgrade-linux-image-gcp
  • ubuntu-upgrade-linux-image-generic
  • ubuntu-upgrade-linux-image-generic-64k
  • ubuntu-upgrade-linux-image-generic-lpae
  • ubuntu-upgrade-linux-image-ibm
  • ubuntu-upgrade-linux-image-kvm
  • ubuntu-upgrade-linux-image-lowlatency
  • ubuntu-upgrade-linux-image-lowlatency-64k
  • ubuntu-upgrade-linux-image-oem-22-04c
  • ubuntu-upgrade-linux-image-oracle
  • ubuntu-upgrade-linux-image-raspi
  • ubuntu-upgrade-linux-image-raspi-nolpae
  • ubuntu-upgrade-linux-image-virtual

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