Ubuntu: (Multiple Advisories) (CVE-2024-39462): Linux kernel vulnerabilities

Ubuntu: (Multiple Advisories) (CVE-2024-39462): Linux kernel vulnerabilities

Severity

4

CVSS

(AV:L/AC:M/Au:N/C:P/I:P/A:P)

Published

06/25/2024

Created

09/13/2024

Added

09/12/2024

Modified

09/25/2024

Description

In the Linux kernel, the following vulnerability has been resolved: clk: bcm: dvp: Assign ->num before accessing ->hws Commit f316cdff8d67 ("clk: Annotate struct clk_hw_onecell_data with __counted_by") annotated the hws member of 'struct clk_hw_onecell_data' with __counted_by, which informs the bounds sanitizer about the number of elements in hws, so that it can warn when hws is accessed out of bounds. As noted in that change, the __counted_by member must be initialized with the number of elements before the first array access happens, otherwise there will be a warning from each access prior to the initialization because the number of elements is zero. This occurs in clk_dvp_probe() due to ->num being assigned after ->hws has been accessed: UBSAN: array-index-out-of-bounds in drivers/clk/bcm/clk-bcm2711-dvp.c:59:2 index 0 is out of range for type 'struct clk_hw *[] __counted_by(num)' (aka 'struct clk_hw *[]') Move the ->num initialization to before the first access of ->hws, which clears up the warning.

Solution(s)

• ubuntu-upgrade-linux-image-6-8-0-1010-gke
• ubuntu-upgrade-linux-image-6-8-0-1011-raspi
• ubuntu-upgrade-linux-image-6-8-0-1012-ibm
• ubuntu-upgrade-linux-image-6-8-0-1012-oem
• ubuntu-upgrade-linux-image-6-8-0-1012-oracle
• ubuntu-upgrade-linux-image-6-8-0-1012-oracle-64k
• ubuntu-upgrade-linux-image-6-8-0-1013-nvidia
• ubuntu-upgrade-linux-image-6-8-0-1013-nvidia-64k
• ubuntu-upgrade-linux-image-6-8-0-1013-nvidia-lowlatency
• ubuntu-upgrade-linux-image-6-8-0-1013-nvidia-lowlatency-64k
• ubuntu-upgrade-linux-image-6-8-0-1014-azure
• ubuntu-upgrade-linux-image-6-8-0-1014-azure-fde
• ubuntu-upgrade-linux-image-6-8-0-1014-gcp
• ubuntu-upgrade-linux-image-6-8-0-1015-aws
• ubuntu-upgrade-linux-image-6-8-0-44-generic
• ubuntu-upgrade-linux-image-6-8-0-44-generic-64k
• ubuntu-upgrade-linux-image-6-8-0-44-lowlatency
• ubuntu-upgrade-linux-image-6-8-0-44-lowlatency-64k
• ubuntu-upgrade-linux-image-6-8-0-45-generic
• ubuntu-upgrade-linux-image-6-8-0-45-generic-64k
• ubuntu-upgrade-linux-image-aws
• ubuntu-upgrade-linux-image-azure
• ubuntu-upgrade-linux-image-azure-fde
• ubuntu-upgrade-linux-image-gcp
• ubuntu-upgrade-linux-image-generic
• ubuntu-upgrade-linux-image-generic-64k
• ubuntu-upgrade-linux-image-generic-64k-hwe-22-04
• ubuntu-upgrade-linux-image-generic-64k-hwe-24-04
• ubuntu-upgrade-linux-image-generic-hwe-22-04
• ubuntu-upgrade-linux-image-generic-hwe-24-04
• ubuntu-upgrade-linux-image-generic-lpae
• ubuntu-upgrade-linux-image-gke
• ubuntu-upgrade-linux-image-ibm
• ubuntu-upgrade-linux-image-ibm-classic
• ubuntu-upgrade-linux-image-ibm-lts-24-04
• ubuntu-upgrade-linux-image-kvm
• ubuntu-upgrade-linux-image-lowlatency
• ubuntu-upgrade-linux-image-lowlatency-64k
• ubuntu-upgrade-linux-image-lowlatency-64k-hwe-22-04
• ubuntu-upgrade-linux-image-lowlatency-hwe-22-04
• ubuntu-upgrade-linux-image-nvidia
• ubuntu-upgrade-linux-image-nvidia-6-8
• ubuntu-upgrade-linux-image-nvidia-64k
• ubuntu-upgrade-linux-image-nvidia-64k-6-8
• ubuntu-upgrade-linux-image-nvidia-lowlatency
• ubuntu-upgrade-linux-image-nvidia-lowlatency-64k
• 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-oracle
• ubuntu-upgrade-linux-image-oracle-64k
• ubuntu-upgrade-linux-image-raspi
• ubuntu-upgrade-linux-image-virtual
• ubuntu-upgrade-linux-image-virtual-hwe-22-04
• ubuntu-upgrade-linux-image-virtual-hwe-24-04

References

• https://attackerkb.com/topics/cve-2024-39462
• CVE - 2024-39462
• USN-6999-1
• USN-6999-2
• USN-7004-1
• USN-7005-1
• USN-7005-2
• USN-7008-1
• USN-7029-1

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