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5.5

CVE-2024-53113: Linux kernel may crash when moving tasks between cpusets

CVE-2024-53113 · published 1 year ago
Summary

The Linux kernel code that allocates memory pages could try to use a missing zone reference when a process is moved between different cpusets, causing the system to stop responding. This affects standard Linux kernels and several Canonical cloud images (Azure, AWS, HWE). Updating the kernel to the latest version, which adds a safety check for the missing reference, resolves the issue.

What to do
  • Update canonical linux-aws-5.15 to version 5.15.0-1080.87~20.04.1.
  • Update canonical linux-azure-5.15 to version 5.15.0-1086.95~20.04.1.
  • Update canonical linux-gcp-5.15 to version 5.15.0-1081.90~20.04.1.
  • Update canonical linux-hwe-5.15 to version 5.15.0-136.147~20.04.1.
  • Update canonical linux-ibm-5.15 to version 5.15.0-1074.77~20.04.1.
  • Update canonical linux-intel-iotg-5.15 to version 5.15.0-1077.83~20.04.1.
  • Update canonical linux-lowlatency-hwe-5.15 to version 5.15.0-135.146~20.04.1.
  • Update canonical linux-azure-6.11 to version 6.11.0-1012.12~24.04.1.
  • Update canonical linux-azure-nvidia to version 6.8.0-1014.15.
  • Update canonical linux-gcp to version 6.8.0-1028.30.
  • Update canonical linux-gcp-6.11 to version 6.11.0-1011.11~24.04.1.
  • Update canonical linux-gke to version 6.8.0-1023.27.
  • Update canonical linux-gkeop to version 6.8.0-1010.12.
  • Update canonical linux-ibm to version 6.8.0-1024.24.
  • Update canonical linux-lowlatency to version 6.8.0-58.60.1.
  • Update canonical linux-nvidia to version 6.8.0-1026.29.
  • Update canonical linux-nvidia-6.11 to version 6.11.0-1007.7.
  • Update canonical linux-nvidia-lowlatency to version 6.8.0-1026.29.1.
  • Update canonical linux-nvidia-tegra to version 6.8.0-1008.8.
  • Update canonical linux-oem-6.11 to version 6.11.0-1015.15.
  • Update canonical linux-oem-6.8 to version 6.8.0-1026.26.
  • Update canonical linux-oracle to version 6.8.0-1024.25.
  • Update canonical linux-raspi to version 6.8.0-1028.32.
  • Update canonical linux-riscv to version 6.8.0-58.60.1.
  • Update canonical linux-xilinx to version 6.8.0-1017.18.
  • Update canonical linux-oracle-5.15 to version 5.15.0-1077.83~20.04.1.
  • Update canonical linux-riscv-5.15 to version 5.15.0-1075.79~20.04.1.
  • Update canonical linux-nvidia-tegra-5.15 to version 5.15.0-1039.39~20.04.1.
  • Update canonical linux to version 5.15.0-135.146.
  • Update canonical linux-aws to version 5.15.0-1080.87.
  • Update canonical linux-aws-6.8 to version 6.8.0-1027.29~22.04.1.
  • Update canonical linux-azure to version 5.15.0-1084.93.
  • Update canonical linux-azure-6.8 to version 6.8.0-1027.32~22.04.1.
  • Update canonical linux-gcp to version 5.15.0-1079.88.
  • Update canonical linux-gcp-6.8 to version 6.8.0-1028.30~22.04.1.
  • Update canonical linux-gke to version 5.15.0-1077.83.
  • Update canonical linux-gkeop to version 5.15.0-1062.70.
  • Update canonical linux-hwe-6.8 to version 6.8.0-58.60~22.04.1.
  • Update canonical linux-ibm to version 5.15.0-1072.75.
  • Update canonical linux-ibm-6.8 to version 6.8.0-1024.24~22.04.1.
  • Update canonical linux-intel-iot-realtime to version 5.15.0-1073.75.
  • Update canonical linux-intel-iotg to version 5.15.0-1075.81.
  • Update canonical linux-kvm to version 5.15.0-1076.81.
  • Update canonical linux-lowlatency to version 5.15.0-135.146.
  • Update canonical linux-lowlatency-hwe-6.8 to version 6.8.0-58.60.1~22.04.1.
  • Update canonical linux-nvidia to version 5.15.0-1074.75.
  • Update canonical linux-nvidia-6.8 to version 6.8.0-1026.29~22.04.1.
  • Update canonical linux-nvidia-tegra to version 5.15.0-1033.33.
  • Update canonical linux-nvidia-tegra-igx to version 5.15.0-1021.21.
  • Update canonical linux-oracle to version 5.15.0-1077.83.
  • Update canonical linux-oracle-6.8 to version 6.8.0-1024.25~22.04.1.
  • Update canonical linux-raspi to version 5.15.0-1074.77.
  • Update canonical linux-riscv-6.8 to version 6.8.0-58.60.1~22.04.1.
  • Update canonical linux-xilinx-zynqmp to version 5.15.0-1044.48.
  • Update canonical linux-bluefield to version 5.15.0-1062.64.
  • Update canonical linux-aws-fips to version 5.15.0-1080.87+fips1.
  • Update canonical linux-azure-fips to version 5.15.0-1083.92+fips1.
  • Update canonical linux-fips to version 5.15.0-135.146+fips1.
  • Update canonical linux-gcp-fips to version 5.15.0-1079.88+fips1.
  • Update canonical linux-realtime to version 5.15.0-1080.88.
  • Update canonical linux-realtime-6.8 to version 6.8.1-1020.21~22.04.1.
  • Update canonical linux to version 6.8.0-58.60.
  • Update canonical linux-aws to version 6.8.0-1027.29.
  • Update canonical linux-azure to version 6.8.0-1027.32.
  • Update canonical linux-fips to version 6.8.0-78.78+fips1.
  • Update canonical linux-raspi-realtime to version 6.8.0-2023.24.
  • Update canonical linux-realtime to version 6.8.1-1020.21.
  • Update debian linux to version 6.1.119-1.
  • Update debian linux to version 6.11.10-1.
  • Update canonical linux-azure-fde to version 5.15.0-1084.93.1.
  • Update linux kernel to version 6.11.10.
Affected software
Ecosystem VendorProductAffected versions
– linux linux_kernel >= 5.13, < 6.1.119
>= 6.2, < 6.6.63
>= 6.7, < 6.11.10
6.12
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Ubuntu:20.04:LTS canonical linux-azure-5.11 All versions
Ubuntu:16.04:LTS canonical linux-hwe-edge All versions
Ubuntu:18.04:LTS canonical linux-aws-5.0 All versions
Ubuntu:18.04:LTS canonical linux-aws-5.3 All versions
Ubuntu:18.04:LTS canonical linux-azure All versions
Ubuntu:18.04:LTS canonical linux-azure-5.3 All versions
Ubuntu:18.04:LTS canonical linux-azure-edge All versions
Ubuntu:18.04:LTS canonical linux-gcp All versions
Ubuntu:18.04:LTS canonical linux-gcp-5.3 All versions
Ubuntu:18.04:LTS canonical linux-gke-4.15 All versions
Ubuntu:18.04:LTS canonical linux-gke-5.4 All versions
Ubuntu:18.04:LTS canonical linux-gkeop-5.4 All versions
Ubuntu:18.04:LTS canonical linux-hwe All versions
Ubuntu:18.04:LTS canonical linux-oem All versions
Ubuntu:18.04:LTS canonical linux-oracle-5.0 All versions
Ubuntu:18.04:LTS canonical linux-oracle-5.3 All versions
Ubuntu:20.04:LTS canonical linux-aws-5.15 < 5.15.0-1080.87~20.04.1
Fix: upgrade to 5.15.0-1080.87~20.04.1
Ubuntu:20.04:LTS canonical linux-azure-5.15 < 5.15.0-1086.95~20.04.1
Fix: upgrade to 5.15.0-1086.95~20.04.1
Ubuntu:20.04:LTS canonical linux-gcp-5.15 < 5.15.0-1081.90~20.04.1
Fix: upgrade to 5.15.0-1081.90~20.04.1
Ubuntu:20.04:LTS canonical linux-hwe-5.15 < 5.15.0-136.147~20.04.1
Fix: upgrade to 5.15.0-136.147~20.04.1
Ubuntu:20.04:LTS canonical linux-ibm-5.15 < 5.15.0-1074.77~20.04.1
Fix: upgrade to 5.15.0-1074.77~20.04.1
Ubuntu:20.04:LTS canonical linux-intel-iotg-5.15 < 5.15.0-1077.83~20.04.1
Fix: upgrade to 5.15.0-1077.83~20.04.1
Ubuntu:20.04:LTS canonical linux-lowlatency-hwe-5.15 < 5.15.0-135.146~20.04.1
Fix: upgrade to 5.15.0-135.146~20.04.1
Ubuntu:20.04:LTS canonical linux-aws-5.11 All versions
Ubuntu:22.04:LTS canonical linux-lowlatency-hwe-5.19 All versions
Ubuntu:24.04:LTS canonical linux-azure-6.11 < 6.11.0-1012.12~24.04.1
Fix: upgrade to 6.11.0-1012.12~24.04.1
Ubuntu:24.04:LTS canonical linux-azure-nvidia < 6.8.0-1014.15
Fix: upgrade to 6.8.0-1014.15
Ubuntu:24.04:LTS canonical linux-gcp < 6.8.0-1028.30
Fix: upgrade to 6.8.0-1028.30
Ubuntu:24.04:LTS canonical linux-gcp-6.11 < 6.11.0-1011.11~24.04.1
Fix: upgrade to 6.11.0-1011.11~24.04.1
Ubuntu:24.04:LTS canonical linux-gke < 6.8.0-1023.27
Fix: upgrade to 6.8.0-1023.27
Ubuntu:24.04:LTS canonical linux-gkeop < 6.8.0-1010.12
Fix: upgrade to 6.8.0-1010.12
Ubuntu:24.04:LTS canonical linux-ibm < 6.8.0-1024.24
Fix: upgrade to 6.8.0-1024.24
Ubuntu:24.04:LTS canonical linux-lowlatency < 6.8.0-58.60.1
Fix: upgrade to 6.8.0-58.60.1
Ubuntu:24.04:LTS canonical linux-nvidia < 6.8.0-1026.29
Fix: upgrade to 6.8.0-1026.29
Ubuntu:24.04:LTS canonical linux-nvidia-6.11 < 6.11.0-1007.7
Fix: upgrade to 6.11.0-1007.7
Ubuntu:24.04:LTS canonical linux-nvidia-lowlatency < 6.8.0-1026.29.1
Fix: upgrade to 6.8.0-1026.29.1
Ubuntu:24.04:LTS canonical linux-nvidia-tegra < 6.8.0-1008.8
Fix: upgrade to 6.8.0-1008.8
Ubuntu:24.04:LTS canonical linux-oem-6.11 < 6.11.0-1015.15
Fix: upgrade to 6.11.0-1015.15
Ubuntu:24.04:LTS canonical linux-oem-6.8 < 6.8.0-1026.26
Fix: upgrade to 6.8.0-1026.26
Ubuntu:24.04:LTS canonical linux-oracle < 6.8.0-1024.25
Fix: upgrade to 6.8.0-1024.25
Ubuntu:24.04:LTS canonical linux-raspi < 6.8.0-1028.32
Fix: upgrade to 6.8.0-1028.32
Ubuntu:24.04:LTS canonical linux-raspi-realtime All versions
Ubuntu:24.04:LTS canonical linux-realtime All versions
Ubuntu:24.04:LTS canonical linux-riscv < 6.8.0-58.60.1
Fix: upgrade to 6.8.0-58.60.1
Ubuntu:24.04:LTS canonical linux-xilinx < 6.8.0-1017.18
Fix: upgrade to 6.8.0-1017.18
Ubuntu:26.04 canonical linux-nvidia All versions
Ubuntu:Nvidia-BlueField:24.04:LTS canonical linux-bluefield All versions
Ubuntu:20.04:LTS canonical linux-oracle-5.15 < 5.15.0-1077.83~20.04.1
Fix: upgrade to 5.15.0-1077.83~20.04.1
Ubuntu:20.04:LTS canonical linux-riscv-5.15 < 5.15.0-1075.79~20.04.1
Fix: upgrade to 5.15.0-1075.79~20.04.1
Showing 50 of 156. Show the rest
Ecosystem VendorProductAffected versions
Ubuntu:20.04:LTS canonical linux-aws-5.13 All versions
Ubuntu:20.04:LTS canonical linux-aws-5.8 All versions
Ubuntu:20.04:LTS canonical linux-azure-5.13 All versions
Ubuntu:20.04:LTS canonical linux-azure-5.8 All versions
Ubuntu:20.04:LTS canonical linux-azure-fde All versions
Ubuntu:20.04:LTS canonical linux-gcp-5.11 All versions
Ubuntu:20.04:LTS canonical linux-gcp-5.13 All versions
Ubuntu:20.04:LTS canonical linux-gcp-5.8 All versions
Ubuntu:20.04:LTS canonical linux-gke All versions
Ubuntu:20.04:LTS canonical linux-gke-5.15 All versions
Ubuntu:20.04:LTS canonical linux-gkeop All versions
Ubuntu:20.04:LTS canonical linux-gkeop-5.15 All versions
Ubuntu:20.04:LTS canonical linux-hwe-5.11 All versions
Ubuntu:20.04:LTS canonical linux-hwe-5.13 All versions
Ubuntu:20.04:LTS canonical linux-hwe-5.8 All versions
Ubuntu:20.04:LTS canonical linux-intel-5.13 All versions
Ubuntu:Pro:20.04:LTS canonical linux-nvidia-tegra-5.15 < 5.15.0-1039.39~20.04.1
Fix: upgrade to 5.15.0-1039.39~20.04.1
Ubuntu:20.04:LTS canonical linux-oem-5.10 All versions
Ubuntu:20.04:LTS canonical linux-oem-5.13 All versions
Ubuntu:20.04:LTS canonical linux-oem-5.14 All versions
Ubuntu:20.04:LTS canonical linux-oem-5.6 All versions
Ubuntu:20.04:LTS canonical linux-oracle-5.11 All versions
Ubuntu:20.04:LTS canonical linux-oracle-5.13 All versions
Ubuntu:20.04:LTS canonical linux-oracle-5.8 All versions
Ubuntu:20.04:LTS canonical linux-raspi2 All versions
Ubuntu:20.04:LTS canonical linux-riscv All versions
Ubuntu:20.04:LTS canonical linux-riscv-5.11 All versions
Ubuntu:20.04:LTS canonical linux-riscv-5.8 All versions
Ubuntu:22.04:LTS canonical linux < 5.15.0-135.146
Fix: upgrade to 5.15.0-135.146
Ubuntu:22.04:LTS canonical linux-allwinner-5.19 All versions
Ubuntu:22.04:LTS canonical linux-aws < 5.15.0-1080.87
Fix: upgrade to 5.15.0-1080.87
Ubuntu:22.04:LTS canonical linux-aws-5.19 All versions
Ubuntu:22.04:LTS canonical linux-aws-6.2 All versions
Ubuntu:22.04:LTS canonical linux-aws-6.5 All versions
Ubuntu:22.04:LTS canonical linux-aws-6.8 < 6.8.0-1027.29~22.04.1
Fix: upgrade to 6.8.0-1027.29~22.04.1
Ubuntu:22.04:LTS canonical linux-azure < 5.15.0-1084.93
Fix: upgrade to 5.15.0-1084.93
Ubuntu:22.04:LTS canonical linux-azure-5.19 All versions
Ubuntu:22.04:LTS canonical linux-azure-6.2 All versions
Ubuntu:22.04:LTS canonical linux-azure-6.5 All versions
Ubuntu:22.04:LTS canonical linux-azure-6.8 < 6.8.0-1027.32~22.04.1
Fix: upgrade to 6.8.0-1027.32~22.04.1
Ubuntu:22.04:LTS canonical linux-azure-fde < 5.15.0-1084.93.1
Fix: upgrade to 5.15.0-1084.93.1
Ubuntu:22.04:LTS canonical linux-azure-fde-5.19 All versions
Ubuntu:22.04:LTS canonical linux-azure-fde-6.2 All versions
Ubuntu:22.04:LTS canonical linux-gcp < 5.15.0-1079.88
Fix: upgrade to 5.15.0-1079.88
Ubuntu:22.04:LTS canonical linux-gcp-5.19 All versions
Ubuntu:22.04:LTS canonical linux-gcp-6.2 All versions
Ubuntu:22.04:LTS canonical linux-gcp-6.5 All versions
Ubuntu:22.04:LTS canonical linux-gcp-6.8 < 6.8.0-1028.30~22.04.1
Fix: upgrade to 6.8.0-1028.30~22.04.1
Ubuntu:22.04:LTS canonical linux-gke < 5.15.0-1077.83
Fix: upgrade to 5.15.0-1077.83
Ubuntu:22.04:LTS canonical linux-gkeop < 5.15.0-1062.70
Fix: upgrade to 5.15.0-1062.70
Ubuntu:22.04:LTS canonical linux-hwe-5.19 All versions
Ubuntu:22.04:LTS canonical linux-hwe-6.2 All versions
Ubuntu:22.04:LTS canonical linux-hwe-6.5 All versions
Ubuntu:22.04:LTS canonical linux-hwe-6.8 < 6.8.0-58.60~22.04.1
Fix: upgrade to 6.8.0-58.60~22.04.1
Ubuntu:22.04:LTS canonical linux-ibm < 5.15.0-1072.75
Fix: upgrade to 5.15.0-1072.75
Ubuntu:22.04:LTS canonical linux-ibm-6.8 < 6.8.0-1024.24~22.04.1
Fix: upgrade to 6.8.0-1024.24~22.04.1
Ubuntu:22.04:LTS canonical linux-intel-iot-realtime < 5.15.0-1073.75
Fix: upgrade to 5.15.0-1073.75
Ubuntu:22.04:LTS canonical linux-intel-iotg < 5.15.0-1075.81
Fix: upgrade to 5.15.0-1075.81
Ubuntu:22.04:LTS canonical linux-kvm < 5.15.0-1076.81
Fix: upgrade to 5.15.0-1076.81
Ubuntu:22.04:LTS canonical linux-lowlatency < 5.15.0-135.146
Fix: upgrade to 5.15.0-135.146
Ubuntu:22.04:LTS canonical linux-lowlatency-hwe-6.2 All versions
Ubuntu:22.04:LTS canonical linux-lowlatency-hwe-6.5 All versions
Ubuntu:22.04:LTS canonical linux-lowlatency-hwe-6.8 < 6.8.0-58.60.1~22.04.1
Fix: upgrade to 6.8.0-58.60.1~22.04.1
Ubuntu:22.04:LTS canonical linux-nvidia < 5.15.0-1074.75
Fix: upgrade to 5.15.0-1074.75
Ubuntu:22.04:LTS canonical linux-nvidia-6.2 All versions
Ubuntu:22.04:LTS canonical linux-nvidia-6.5 All versions
Ubuntu:22.04:LTS canonical linux-nvidia-6.8 < 6.8.0-1026.29~22.04.1
Fix: upgrade to 6.8.0-1026.29~22.04.1
Ubuntu:22.04:LTS canonical linux-nvidia-tegra < 5.15.0-1033.33
Fix: upgrade to 5.15.0-1033.33
Ubuntu:22.04:LTS canonical linux-nvidia-tegra-igx < 5.15.0-1021.21
Fix: upgrade to 5.15.0-1021.21
Ubuntu:22.04:LTS canonical linux-oem-5.17 All versions
Ubuntu:22.04:LTS canonical linux-oem-6.0 All versions
Ubuntu:22.04:LTS canonical linux-oem-6.1 All versions
Ubuntu:22.04:LTS canonical linux-oem-6.5 All versions
Ubuntu:22.04:LTS canonical linux-oracle < 5.15.0-1077.83
Fix: upgrade to 5.15.0-1077.83
Ubuntu:22.04:LTS canonical linux-oracle-6.5 All versions
Ubuntu:22.04:LTS canonical linux-oracle-6.8 < 6.8.0-1024.25~22.04.1
Fix: upgrade to 6.8.0-1024.25~22.04.1
Ubuntu:22.04:LTS canonical linux-raspi < 5.15.0-1074.77
Fix: upgrade to 5.15.0-1074.77
Ubuntu:22.04:LTS canonical linux-realtime All versions
Ubuntu:22.04:LTS canonical linux-riscv All versions
Ubuntu:22.04:LTS canonical linux-riscv-5.19 All versions
Ubuntu:22.04:LTS canonical linux-riscv-6.5 All versions
Ubuntu:22.04:LTS canonical linux-riscv-6.8 < 6.8.0-58.60.1~22.04.1
Fix: upgrade to 6.8.0-58.60.1~22.04.1
Ubuntu:22.04:LTS canonical linux-starfive-5.19 All versions
Ubuntu:22.04:LTS canonical linux-starfive-6.2 All versions
Ubuntu:22.04:LTS canonical linux-starfive-6.5 All versions
Ubuntu:22.04:LTS canonical linux-xilinx-zynqmp < 5.15.0-1044.48
Fix: upgrade to 5.15.0-1044.48
Ubuntu:Nvidia-BlueField:22.04:LTS canonical linux-bluefield < 5.15.0-1062.64
Fix: upgrade to 5.15.0-1062.64
Ubuntu:Pro:FIPS-preview:22.04:LTS canonical linux-aws-fips All versions
Ubuntu:Pro:FIPS-preview:22.04:LTS canonical linux-azure-fips All versions
Ubuntu:Pro:FIPS-preview:22.04:LTS canonical linux-fips All versions
Ubuntu:Pro:FIPS-preview:22.04:LTS canonical linux-gcp-fips All versions
Ubuntu:Pro:FIPS-updates:22.04:LTS canonical linux-aws-fips < 5.15.0-1080.87+fips1
Fix: upgrade to 5.15.0-1080.87+fips1
Ubuntu:Pro:FIPS-updates:22.04:LTS canonical linux-azure-fips < 5.15.0-1083.92+fips1
Fix: upgrade to 5.15.0-1083.92+fips1
Ubuntu:Pro:FIPS-updates:22.04:LTS canonical linux-fips < 5.15.0-135.146+fips1
Fix: upgrade to 5.15.0-135.146+fips1
Ubuntu:Pro:FIPS-updates:22.04:LTS canonical linux-gcp-fips < 5.15.0-1079.88+fips1
Fix: upgrade to 5.15.0-1079.88+fips1
Ubuntu:Pro:Realtime:22.04:LTS canonical linux-realtime < 5.15.0-1080.88
Fix: upgrade to 5.15.0-1080.88
Ubuntu:Pro:Realtime:22.04:LTS canonical linux-realtime-6.8 < 6.8.1-1020.21~22.04.1
Fix: upgrade to 6.8.1-1020.21~22.04.1
Ubuntu:24.04:LTS canonical linux < 6.8.0-58.60
Fix: upgrade to 6.8.0-58.60
Ubuntu:24.04:LTS canonical linux-aws < 6.8.0-1027.29
Fix: upgrade to 6.8.0-1027.29
Ubuntu:24.04:LTS canonical linux-azure < 6.8.0-1027.32
Fix: upgrade to 6.8.0-1027.32
Ubuntu:Pro:FIPS-updates:24.04:LTS canonical linux-fips < 6.8.0-78.78+fips1
Fix: upgrade to 6.8.0-78.78+fips1
Ubuntu:Pro:Realtime:24.04:LTS canonical linux-raspi-realtime < 6.8.0-2023.24
Fix: upgrade to 6.8.0-2023.24
Ubuntu:Pro:Realtime:24.04:LTS canonical linux-realtime < 6.8.1-1020.21
Fix: upgrade to 6.8.1-1020.21
Debian:12 debian linux < 6.1.119-1
Fix: upgrade to 6.1.119-1
Debian:13 debian linux < 6.11.10-1
Fix: upgrade to 6.11.10-1
Linux linux kernel >= 6.7.0, < 6.11.10
Fix: upgrade to 6.11.10
Original advisory text
mm: fix NULL pointer dereference in alloc_pages_bulk_noprof
In the Linux kernel, the following vulnerability has been resolved: mm: fix NULL pointer dereference in alloc_pages_bulk_noprof We triggered a NULL pointer dereference for ac.preferred_zoneref->zone in alloc_pages_bulk_noprof() when the task is migrated between cpusets. When cpuset is enabled, in prepare_alloc_pages(), ac->nodemask may be &current->mems_allowed. when first_zones_zonelist() is called to find preferred_zoneref, the ac->nodemask may be modified concurrently if the task is migrated between different cpusets. Assuming we have 2 NUMA Node, when traversing Node1 in ac->zonelist, the nodemask is 2, and when traversing Node2 in ac->zonelist, the nodemask is 1. As a result, the ac->preferred_zoneref points to NULL zone. In alloc_pages_bulk_noprof(), for_each_zone_zonelist_nodemask() finds a allowable zone and calls zonelist_node_idx(ac.preferred_zoneref), leading to NULL pointer dereference. __alloc_pages_noprof() fixes this issue by checking NULL pointer in commit ea57485af8f4 ("mm, page_alloc: fix check for NULL preferred_zone") and commit df76cee6bbeb ("mm, page_alloc: remove redundant checks from alloc fastpath"). To fix it, check NULL pointer for preferred_zoneref->zone.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker partial control (estimated)
Severity
5.5 Medium
Exploitation
<1% chance of attack within 30 days
Type
CWE-476NULL Pointer Dereference
Timeline
Published2 Dec 2024
Updated4 Nov 2026
First seen7 Mar 2026
Track software like this
Free during beta