VULNERABILITY

Ubuntu: (Multiple Advisories) (CVE-2024-49889): Linux kernel vulnerabilities

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Ubuntu: (Multiple Advisories) (CVE-2024-49889): Linux kernel vulnerabilities

Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
10/21/2024
Created
12/19/2024
Added
12/18/2024
Modified
03/05/2025

Description

In the Linux kernel, the following vulnerability has been resolved: ext4: avoid use-after-free in ext4_ext_show_leaf() In ext4_find_extent(), path may be freed by error or be reallocated, so using a previously saved *ppath may have been freed and thus may trigger use-after-free, as follows: ext4_split_extent path = *ppath; ext4_split_extent_at(ppath) path = ext4_find_extent(ppath) ext4_split_extent_at(ppath) // ext4_find_extent fails to free path // but zeroout succeeds ext4_ext_show_leaf(inode, path) eh = path[depth].p_hdr // path use-after-free !!! Similar to ext4_split_extent_at(), we use *ppath directly as an input to ext4_ext_show_leaf(). Fix a spelling error by the way. Same problem in ext4_ext_handle_unwritten_extents(). Since 'path' is only used in ext4_ext_show_leaf(), remove 'path' and use *ppath directly. This issue is triggered only when EXT_DEBUG is defined and therefore does not affect functionality.

Solution(s)

  • ubuntu-upgrade-linux-image-5-15-0-1039-xilinx-zynqmp
  • ubuntu-upgrade-linux-image-5-15-0-1056-gkeop
  • ubuntu-upgrade-linux-image-5-15-0-1066-ibm
  • ubuntu-upgrade-linux-image-5-15-0-1066-raspi
  • ubuntu-upgrade-linux-image-5-15-0-1068-nvidia
  • ubuntu-upgrade-linux-image-5-15-0-1068-nvidia-lowlatency
  • ubuntu-upgrade-linux-image-5-15-0-1070-gke
  • ubuntu-upgrade-linux-image-5-15-0-1070-kvm
  • ubuntu-upgrade-linux-image-5-15-0-1071-intel-iotg
  • ubuntu-upgrade-linux-image-5-15-0-1071-oracle
  • ubuntu-upgrade-linux-image-5-15-0-1072-gcp
  • ubuntu-upgrade-linux-image-5-15-0-1073-aws
  • ubuntu-upgrade-linux-image-5-15-0-1078-azure
  • ubuntu-upgrade-linux-image-5-15-0-127-generic
  • ubuntu-upgrade-linux-image-5-15-0-127-generic-64k
  • ubuntu-upgrade-linux-image-5-15-0-127-generic-lpae
  • ubuntu-upgrade-linux-image-5-15-0-127-lowlatency
  • ubuntu-upgrade-linux-image-5-15-0-127-lowlatency-64k
  • ubuntu-upgrade-linux-image-6-11-0-1005-realtime
  • ubuntu-upgrade-linux-image-6-11-0-1008-raspi
  • ubuntu-upgrade-linux-image-6-11-0-1009-aws
  • ubuntu-upgrade-linux-image-6-11-0-1009-azure
  • ubuntu-upgrade-linux-image-6-11-0-1009-azure-fde
  • ubuntu-upgrade-linux-image-6-11-0-1009-gcp
  • ubuntu-upgrade-linux-image-6-11-0-1010-lowlatency
  • ubuntu-upgrade-linux-image-6-11-0-1010-lowlatency-64k
  • ubuntu-upgrade-linux-image-6-11-0-1011-oracle
  • ubuntu-upgrade-linux-image-6-11-0-1011-oracle-64k
  • ubuntu-upgrade-linux-image-6-11-0-1015-oem
  • ubuntu-upgrade-linux-image-6-11-0-18-generic
  • ubuntu-upgrade-linux-image-6-11-0-18-generic-64k
  • ubuntu-upgrade-linux-image-6-8-0-1006-gkeop
  • ubuntu-upgrade-linux-image-6-8-0-1019-gke
  • ubuntu-upgrade-linux-image-6-8-0-1019-raspi
  • ubuntu-upgrade-linux-image-6-8-0-1020-oracle
  • ubuntu-upgrade-linux-image-6-8-0-1020-oracle-64k
  • ubuntu-upgrade-linux-image-6-8-0-1022-nvidia
  • ubuntu-upgrade-linux-image-6-8-0-1022-nvidia-64k
  • ubuntu-upgrade-linux-image-6-8-0-1022-nvidia-lowlatency
  • ubuntu-upgrade-linux-image-6-8-0-1022-nvidia-lowlatency-64k
  • ubuntu-upgrade-linux-image-6-8-0-1023-aws
  • ubuntu-upgrade-linux-image-6-8-0-1024-gcp
  • ubuntu-upgrade-linux-image-6-8-0-1024-gcp-64k
  • ubuntu-upgrade-linux-image-6-8-0-54-generic
  • ubuntu-upgrade-linux-image-6-8-0-54-generic-64k
  • ubuntu-upgrade-linux-image-6-8-0-54-lowlatency
  • ubuntu-upgrade-linux-image-6-8-0-54-lowlatency-64k
  • ubuntu-upgrade-linux-image-aws
  • ubuntu-upgrade-linux-image-aws-lts-22-04
  • ubuntu-upgrade-linux-image-aws-lts-24-04
  • ubuntu-upgrade-linux-image-azure
  • ubuntu-upgrade-linux-image-azure-cvm
  • ubuntu-upgrade-linux-image-azure-fde
  • ubuntu-upgrade-linux-image-azure-lts-22-04
  • ubuntu-upgrade-linux-image-gcp
  • ubuntu-upgrade-linux-image-gcp-64k
  • ubuntu-upgrade-linux-image-gcp-64k-lts-24-04
  • ubuntu-upgrade-linux-image-gcp-lts-22-04
  • ubuntu-upgrade-linux-image-gcp-lts-24-04
  • 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-24-04
  • ubuntu-upgrade-linux-image-generic-hwe-20-04
  • ubuntu-upgrade-linux-image-generic-hwe-24-04
  • ubuntu-upgrade-linux-image-generic-lpae
  • ubuntu-upgrade-linux-image-generic-lpae-hwe-20-04
  • 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-6-8
  • ubuntu-upgrade-linux-image-ibm
  • ubuntu-upgrade-linux-image-intel
  • ubuntu-upgrade-linux-image-intel-iotg
  • ubuntu-upgrade-linux-image-kvm
  • 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-20-04
  • 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-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-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-24-04
  • ubuntu-upgrade-linux-image-oem-24-04a
  • ubuntu-upgrade-linux-image-oem-24-04b
  • ubuntu-upgrade-linux-image-oracle
  • ubuntu-upgrade-linux-image-oracle-64k
  • ubuntu-upgrade-linux-image-oracle-64k-lts-24-04
  • ubuntu-upgrade-linux-image-oracle-lts-22-04
  • ubuntu-upgrade-linux-image-oracle-lts-24-04
  • ubuntu-upgrade-linux-image-raspi
  • ubuntu-upgrade-linux-image-raspi-nolpae
  • ubuntu-upgrade-linux-image-realtime
  • ubuntu-upgrade-linux-image-realtime-hwe-24-04
  • ubuntu-upgrade-linux-image-virtual
  • ubuntu-upgrade-linux-image-virtual-hwe-20-04
  • ubuntu-upgrade-linux-image-virtual-hwe-24-04
  • ubuntu-upgrade-linux-image-xilinx-zynqmp

References

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