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Ubuntu: (Multiple Advisories) (CVE-2023-4921): Linux kernel vulnerabilities

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Ubuntu: (Multiple Advisories) (CVE-2023-4921): Linux kernel vulnerabilities

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
09/12/2023
Created
10/24/2023
Added
10/23/2023
Modified
03/19/2024

Description

A use-after-free vulnerability in the Linux kernel's net/sched: sch_qfq component can be exploited to achieve local privilege escalation. When the plug qdisc is used as a class of the qfq qdisc, sending network packets triggers use-after-free in qfq_dequeue() due to the incorrect .peek handler of sch_plug and lack of error checking in agg_dequeue(). We recommend upgrading past commit 8fc134fee27f2263988ae38920bc03da416b03d8.

Solution(s)

  • ubuntu-upgrade-linux-image-3-13-0-197-generic
  • ubuntu-upgrade-linux-image-3-13-0-197-lowlatency
  • ubuntu-upgrade-linux-image-4-15-0-1125-oracle
  • ubuntu-upgrade-linux-image-4-15-0-1146-kvm
  • ubuntu-upgrade-linux-image-4-15-0-1156-gcp
  • ubuntu-upgrade-linux-image-4-15-0-1162-aws
  • ubuntu-upgrade-linux-image-4-15-0-1171-azure
  • ubuntu-upgrade-linux-image-4-15-0-219-generic
  • ubuntu-upgrade-linux-image-4-15-0-219-lowlatency
  • ubuntu-upgrade-linux-image-4-4-0-1124-aws
  • ubuntu-upgrade-linux-image-4-4-0-1125-kvm
  • ubuntu-upgrade-linux-image-4-4-0-1162-aws
  • ubuntu-upgrade-linux-image-4-4-0-246-generic
  • ubuntu-upgrade-linux-image-4-4-0-246-lowlatency
  • ubuntu-upgrade-linux-image-5-15-0-1031-gkeop
  • ubuntu-upgrade-linux-image-5-15-0-1039-nvidia
  • ubuntu-upgrade-linux-image-5-15-0-1039-nvidia-lowlatency
  • ubuntu-upgrade-linux-image-5-15-0-1041-ibm
  • ubuntu-upgrade-linux-image-5-15-0-1041-raspi
  • ubuntu-upgrade-linux-image-5-15-0-1043-intel-iotg
  • ubuntu-upgrade-linux-image-5-15-0-1045-gcp
  • ubuntu-upgrade-linux-image-5-15-0-1045-gke
  • ubuntu-upgrade-linux-image-5-15-0-1045-kvm
  • ubuntu-upgrade-linux-image-5-15-0-1046-oracle
  • ubuntu-upgrade-linux-image-5-15-0-1048-aws
  • ubuntu-upgrade-linux-image-5-15-0-1050-azure
  • ubuntu-upgrade-linux-image-5-15-0-1050-azure-fde
  • ubuntu-upgrade-linux-image-5-15-0-87-generic
  • ubuntu-upgrade-linux-image-5-15-0-87-generic-64k
  • ubuntu-upgrade-linux-image-5-15-0-87-generic-lpae
  • ubuntu-upgrade-linux-image-5-15-0-87-lowlatency
  • ubuntu-upgrade-linux-image-5-15-0-87-lowlatency-64k
  • ubuntu-upgrade-linux-image-5-4-0-1024-iot
  • ubuntu-upgrade-linux-image-5-4-0-1032-xilinx-zynqmp
  • ubuntu-upgrade-linux-image-5-4-0-1059-ibm
  • ubuntu-upgrade-linux-image-5-4-0-1073-bluefield
  • ubuntu-upgrade-linux-image-5-4-0-1079-gkeop
  • ubuntu-upgrade-linux-image-5-4-0-1096-raspi
  • ubuntu-upgrade-linux-image-5-4-0-1101-kvm
  • ubuntu-upgrade-linux-image-5-4-0-1111-oracle
  • ubuntu-upgrade-linux-image-5-4-0-1112-aws
  • ubuntu-upgrade-linux-image-5-4-0-1116-gcp
  • ubuntu-upgrade-linux-image-5-4-0-1118-azure
  • ubuntu-upgrade-linux-image-5-4-0-165-generic
  • ubuntu-upgrade-linux-image-5-4-0-165-generic-lpae
  • ubuntu-upgrade-linux-image-5-4-0-165-lowlatency
  • ubuntu-upgrade-linux-image-6-1-0-1025-oem
  • ubuntu-upgrade-linux-image-6-2-0-1007-starfive
  • ubuntu-upgrade-linux-image-6-2-0-1011-nvidia
  • ubuntu-upgrade-linux-image-6-2-0-1011-nvidia-64k
  • ubuntu-upgrade-linux-image-6-2-0-1014-aws
  • ubuntu-upgrade-linux-image-6-2-0-1014-oracle
  • ubuntu-upgrade-linux-image-6-2-0-1015-azure
  • ubuntu-upgrade-linux-image-6-2-0-1015-azure-fde
  • ubuntu-upgrade-linux-image-6-2-0-1015-kvm
  • ubuntu-upgrade-linux-image-6-2-0-1015-lowlatency
  • ubuntu-upgrade-linux-image-6-2-0-1015-lowlatency-64k
  • ubuntu-upgrade-linux-image-6-2-0-1015-raspi
  • ubuntu-upgrade-linux-image-6-2-0-1017-gcp
  • ubuntu-upgrade-linux-image-6-2-0-35-generic
  • ubuntu-upgrade-linux-image-6-2-0-35-generic-64k
  • ubuntu-upgrade-linux-image-6-2-0-35-generic-lpae
  • ubuntu-upgrade-linux-image-6-5-0-10-generic
  • ubuntu-upgrade-linux-image-6-5-0-10-generic-64k
  • ubuntu-upgrade-linux-image-6-5-0-10-lowlatency
  • ubuntu-upgrade-linux-image-6-5-0-10-lowlatency-64k
  • ubuntu-upgrade-linux-image-6-5-0-1003-starfive
  • ubuntu-upgrade-linux-image-6-5-0-1005-laptop
  • ubuntu-upgrade-linux-image-6-5-0-1006-raspi
  • ubuntu-upgrade-linux-image-6-5-0-1007-oem
  • ubuntu-upgrade-linux-image-6-5-0-1008-azure
  • ubuntu-upgrade-linux-image-6-5-0-1008-azure-fde
  • ubuntu-upgrade-linux-image-6-5-0-1008-gcp
  • ubuntu-upgrade-linux-image-6-5-0-1009-aws
  • ubuntu-upgrade-linux-image-6-5-0-1011-oracle
  • ubuntu-upgrade-linux-image-aws
  • ubuntu-upgrade-linux-image-aws-hwe
  • ubuntu-upgrade-linux-image-aws-lts-18-04
  • ubuntu-upgrade-linux-image-aws-lts-20-04
  • ubuntu-upgrade-linux-image-aws-lts-22-04
  • ubuntu-upgrade-linux-image-azure
  • ubuntu-upgrade-linux-image-azure-cvm
  • ubuntu-upgrade-linux-image-azure-fde
  • ubuntu-upgrade-linux-image-azure-fde-lts-22-04
  • ubuntu-upgrade-linux-image-azure-lts-18-04
  • ubuntu-upgrade-linux-image-azure-lts-20-04
  • ubuntu-upgrade-linux-image-azure-lts-22-04
  • ubuntu-upgrade-linux-image-bluefield
  • ubuntu-upgrade-linux-image-gcp
  • ubuntu-upgrade-linux-image-gcp-lts-18-04
  • ubuntu-upgrade-linux-image-gcp-lts-20-04
  • ubuntu-upgrade-linux-image-gcp-lts-22-04
  • ubuntu-upgrade-linux-image-generic
  • ubuntu-upgrade-linux-image-generic-64k
  • ubuntu-upgrade-linux-image-generic-64k-hwe-20-04
  • ubuntu-upgrade-linux-image-generic-64k-hwe-22-04
  • ubuntu-upgrade-linux-image-generic-hwe-16-04
  • ubuntu-upgrade-linux-image-generic-hwe-18-04
  • ubuntu-upgrade-linux-image-generic-hwe-20-04
  • ubuntu-upgrade-linux-image-generic-hwe-22-04
  • ubuntu-upgrade-linux-image-generic-lpae
  • ubuntu-upgrade-linux-image-generic-lpae-hwe-20-04
  • ubuntu-upgrade-linux-image-generic-lpae-hwe-22-04
  • ubuntu-upgrade-linux-image-generic-lts-trusty
  • ubuntu-upgrade-linux-image-generic-lts-xenial
  • ubuntu-upgrade-linux-image-gke
  • ubuntu-upgrade-linux-image-gke-5-15
  • ubuntu-upgrade-linux-image-gkeop
  • ubuntu-upgrade-linux-image-gkeop-5-15
  • ubuntu-upgrade-linux-image-gkeop-5-4
  • ubuntu-upgrade-linux-image-ibm
  • ubuntu-upgrade-linux-image-ibm-lts-20-04
  • ubuntu-upgrade-linux-image-intel
  • ubuntu-upgrade-linux-image-intel-iotg
  • ubuntu-upgrade-linux-image-kvm
  • ubuntu-upgrade-linux-image-laptop-23-10
  • ubuntu-upgrade-linux-image-lowlatency
  • ubuntu-upgrade-linux-image-lowlatency-64k
  • ubuntu-upgrade-linux-image-lowlatency-64k-hwe-20-04
  • ubuntu-upgrade-linux-image-lowlatency-64k-hwe-22-04
  • ubuntu-upgrade-linux-image-lowlatency-hwe-16-04
  • ubuntu-upgrade-linux-image-lowlatency-hwe-18-04
  • ubuntu-upgrade-linux-image-lowlatency-hwe-20-04
  • ubuntu-upgrade-linux-image-lowlatency-hwe-22-04
  • ubuntu-upgrade-linux-image-lowlatency-lts-xenial
  • ubuntu-upgrade-linux-image-nvidia
  • ubuntu-upgrade-linux-image-nvidia-6-2
  • ubuntu-upgrade-linux-image-nvidia-64k-6-2
  • ubuntu-upgrade-linux-image-nvidia-64k-hwe-22-04
  • ubuntu-upgrade-linux-image-nvidia-hwe-22-04
  • ubuntu-upgrade-linux-image-nvidia-lowlatency
  • ubuntu-upgrade-linux-image-oem
  • ubuntu-upgrade-linux-image-oem-20-04
  • ubuntu-upgrade-linux-image-oem-20-04b
  • ubuntu-upgrade-linux-image-oem-20-04c
  • ubuntu-upgrade-linux-image-oem-20-04d
  • ubuntu-upgrade-linux-image-oem-22-04
  • ubuntu-upgrade-linux-image-oem-22-04a
  • ubuntu-upgrade-linux-image-oem-22-04b
  • ubuntu-upgrade-linux-image-oem-22-04c
  • ubuntu-upgrade-linux-image-oem-22-04d
  • ubuntu-upgrade-linux-image-oem-osp1
  • ubuntu-upgrade-linux-image-oracle
  • ubuntu-upgrade-linux-image-oracle-lts-18-04
  • ubuntu-upgrade-linux-image-oracle-lts-20-04
  • ubuntu-upgrade-linux-image-oracle-lts-22-04
  • ubuntu-upgrade-linux-image-raspi
  • ubuntu-upgrade-linux-image-raspi-hwe-18-04
  • ubuntu-upgrade-linux-image-raspi-nolpae
  • ubuntu-upgrade-linux-image-raspi2
  • ubuntu-upgrade-linux-image-server
  • ubuntu-upgrade-linux-image-snapdragon-hwe-18-04
  • ubuntu-upgrade-linux-image-starfive
  • ubuntu-upgrade-linux-image-virtual
  • ubuntu-upgrade-linux-image-virtual-hwe-16-04
  • ubuntu-upgrade-linux-image-virtual-hwe-18-04
  • ubuntu-upgrade-linux-image-virtual-hwe-20-04
  • ubuntu-upgrade-linux-image-virtual-hwe-22-04
  • ubuntu-upgrade-linux-image-virtual-lts-xenial
  • ubuntu-upgrade-linux-image-xilinx-zynqmp

References

  • https://attackerkb.com/topics/cve-2023-4921
  • CVE - 2023-4921
  • USN-6439-1
  • USN-6439-2
  • USN-6440-1
  • USN-6440-2
  • USN-6440-3
  • USN-6441-1
  • USN-6441-2
  • USN-6441-3
  • USN-6442-1
  • USN-6444-1
  • USN-6444-2
  • USN-6445-1
  • USN-6445-2
  • USN-6446-1
  • USN-6446-2
  • USN-6446-3
  • USN-6454-1
  • USN-6454-2
  • USN-6454-3
  • USN-6454-4
  • USN-6461-1
  • USN-6466-1
  • USN-6479-1
  • USN-6699-1
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