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Ubuntu: (Multiple Advisories) (CVE-2024-45022): Linux kernel vulnerabilities

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Ubuntu: (Multiple Advisories) (CVE-2024-45022): Linux kernel vulnerabilities

Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
09/11/2024
Created
12/14/2024
Added
12/13/2024
Modified
01/30/2025

Description

In the Linux kernel, the following vulnerability has been resolved: mm/vmalloc: fix page mapping if vm_area_alloc_pages() with high order fallback to order 0 The __vmap_pages_range_noflush() assumes its argument pages** contains pages with the same page shift.However, since commit e9c3cda4d86e ("mm, vmalloc: fix high order __GFP_NOFAIL allocations"), if gfp_flags includes __GFP_NOFAIL with high order in vm_area_alloc_pages() and page allocation failed for high order, the pages** may contain two different page shifts (high order and order-0).This could lead __vmap_pages_range_noflush() to perform incorrect mappings, potentially resulting in memory corruption. Users might encounter this as follows (vmap_allow_huge = true, 2M is for PMD_SIZE): kvmalloc(2M, __GFP_NOFAIL|GFP_X) __vmalloc_node_range_noprof(vm_flags=VM_ALLOW_HUGE_VMAP) vm_area_alloc_pages(order=9) ---> order-9 allocation failed and fallback to order-0 vmap_pages_range() vmap_pages_range_noflush() __vmap_pages_range_noflush(page_shift = 21) ----> wrong mapping happens We can remove the fallback code because if a high-order allocation fails, __vmalloc_node_range_noprof() will retry with order-0.Therefore, it is unnecessary to fallback to order-0 here.Therefore, fix this by removing the fallback code.

Solution(s)

  • ubuntu-upgrade-linux-image-6-8-0-1002-gkeop
  • ubuntu-upgrade-linux-image-6-8-0-1015-gke
  • ubuntu-upgrade-linux-image-6-8-0-1016-raspi
  • ubuntu-upgrade-linux-image-6-8-0-1017-ibm
  • ubuntu-upgrade-linux-image-6-8-0-1017-oracle
  • ubuntu-upgrade-linux-image-6-8-0-1017-oracle-64k
  • ubuntu-upgrade-linux-image-6-8-0-1018-oem
  • ubuntu-upgrade-linux-image-6-8-0-1019-gcp
  • ubuntu-upgrade-linux-image-6-8-0-1019-nvidia
  • ubuntu-upgrade-linux-image-6-8-0-1019-nvidia-64k
  • ubuntu-upgrade-linux-image-6-8-0-1019-nvidia-lowlatency
  • ubuntu-upgrade-linux-image-6-8-0-1019-nvidia-lowlatency-64k
  • ubuntu-upgrade-linux-image-6-8-0-1020-aws
  • ubuntu-upgrade-linux-image-6-8-0-1020-azure
  • ubuntu-upgrade-linux-image-6-8-0-1020-azure-fde
  • ubuntu-upgrade-linux-image-6-8-0-50-generic
  • ubuntu-upgrade-linux-image-6-8-0-50-generic-64k
  • ubuntu-upgrade-linux-image-6-8-0-50-lowlatency
  • ubuntu-upgrade-linux-image-6-8-0-50-lowlatency-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-gkeop
  • ubuntu-upgrade-linux-image-gkeop-6-8
  • 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-64k-hwe-24-04
  • ubuntu-upgrade-linux-image-lowlatency-hwe-22-04
  • ubuntu-upgrade-linux-image-lowlatency-hwe-24-04
  • 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-64k-hwe-22-04
  • ubuntu-upgrade-linux-image-nvidia-hwe-22-04
  • 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-oem-24-04
  • ubuntu-upgrade-linux-image-oem-24-04a
  • 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-2024-45022
  • CVE - 2024-45022
  • USN-7154-1
  • USN-7154-2
  • USN-7155-1
  • USN-7156-1
  • USN-7196-1
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