In the Linux kernel, the following vulnerability has been resolved:
mm/damon/core: validate ranges in damon_set_regions()
DAMON core logic assumes zero length regions don't exist. However, a few DAMON API callers including DAMON_SYSFS, DAMON_RECLAIM and DAMON_LRU_SORT allow users to set empty monitoring target regions. This could result in WARN_ONCE() on CONFIG_DAMON_DEBUG_SANITY enabled kernel, and divide-by-zero from damon_merge_two_regions().
For example, the WANR_ONCE() can be triggered like below.
# grep DAMON_DEBUG_SANITY /boot/config-$(uname -r) # CONFIG_DAMON_DEBUG_SANITY=y # damo start # cd /sys/kernel/mm/damon/admin/kdamonds/0 # echo 0 > contexts/0/targets/0/regions/0/start # echo 0 > contexts/0/targets/0/regions/0/end # echo commit > state # dmesg [....] [ 73.705780] ------------[ cut here ]------------ [ 73.707552] start 0 >= end 0 [ 73.708452] WARNING: mm/damon/core.c:359 at damon_new_region+0x6e/0x80, CPU#1: kdamond.0/758 [...]
All DAMON API callers eventually use damon_set_regions() to setup the regions. Add the validation logic in the function.
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade microvm-kernel6.18Upgrade perf6.12Upgrade kernel6.12-toolsUpgrade kernel6.12-develUpgrade python3-perf6.12Upgrade kernel6.18-develUpgrade kernel6.12-tools-debuginfoUpgrade python3-perf6.18Upgrade bpftool6.18Upgrade kernel-livepatch-6.12.103-127.188Upgrade kernel6.18-tools-develUpgrade python3-perf6.18-debuginfoUpgrade perf6.18Upgrade python3-perf6.12-debuginfoUpgrade kernel6.18Upgrade kernel6.18-debuginfo-common-x86_64Upgrade kernel6.12-debuginfoUpgrade kernel6.18-tools-debuginfoUpgrade kernel6.12-headersUpgrade kernel6.18-modules-extra-commonUpgrade kernel6.12-modules-extraUpgrade bpftool6.18-debuginfoUpgrade perf6.18-debuginfoUpgrade kernel6.18-debuginfoUpgrade kernel6.12-modules-extra-commonUpgrade bpftool6.12Upgrade kernel6.12-tools-develUpgrade kernel-livepatch-6.18.44-99.149Upgrade perf6.12-debuginfoUpgrade kernel6.12-debuginfo-common-x86_64Upgrade bpftool6.12-debuginfoUpgrade kernel6.18-toolsUpgrade kernel6.12Upgrade kernel6.18-modules-extraUpgrade kernel6.18-debuginfo-common-aarch64Upgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel6.18-headers | Sep 1, 2026 | Aug 10, 2026 |
| Debian | — | Upgrade linux-6.12Upgrade linux | Aug 11, 2026 | Aug 11, 2026 |
| Redhat_linux | — | No solution exists | Aug 13, 2026 | Aug 10, 2026 |
| Ubuntu | — | Upgrade linux-image-oracle-lts-24.04Upgrade linux-image-virtual-7.0Upgrade linux-image-7.0.0-1016-azure-fdeUpgrade linux-image-generic-lpaeUpgrade linux-image-7.0.0-1013-oracleUpgrade linux-image-generic-64k-7.0Upgrade linux-image-genericUpgrade linux-image-oracle-64kUpgrade linux-image-6.8.0-1067-awsUpgrade linux-image-ibm-7.0Upgrade linux-image-aws-7.0Upgrade linux-image-6.8.0-1064-oracleUpgrade linux-image-6.8.0-1066-gke-64kUpgrade linux-image-azure-fde-lts-26.04Upgrade linux-image-gcp-64k-7.0Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-6.8.0-1067-ibmUpgrade linux-image-realtime-64kUpgrade linux-image-6.8.0-1071-gcp-64kUpgrade linux-image-azure-lts-26.04Upgrade linux-image-6.8.0-1066-gkeUpgrade linux-image-generic-64kUpgrade linux-image-6.8.0-147-lowlatency-64kUpgrade linux-image-gcpUpgrade linux-image-realtime-7.0Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-gke-6.8Upgrade linux-image-gke-64k-hwe-26.04Upgrade linux-image-lowlatency-64kUpgrade linux-image-6.8.0-147-generic-64kUpgrade linux-image-realtime-64k-hwe-26.04Upgrade linux-image-realtime-hwe-26.04Upgrade linux-image-7.0.0-38-realtimeUpgrade linux-image-realtimeUpgrade linux-image-gcp-fips-6.8Upgrade linux-image-7.0.0-38-realtime-64kUpgrade linux-image-oracleUpgrade linux-image-6.8.0-1069-azure-fdeUpgrade linux-image-realtime-64k-7.0Upgrade linux-image-generic-64k-hwe-26.04Upgrade linux-image-aws-64kUpgrade linux-image-gcp-64k-6.8Upgrade linux-image-azure-fips-6.8Upgrade linux-image-6.8.0-1071-gcpUpgrade linux-image-6.8.0-1067-aws-fipsUpgrade linux-image-6.8.0-1071-azure-fipsUpgrade linux-image-oracle-64k-7.0Upgrade linux-image-6.8.0-1067-aws-64kUpgrade linux-image-7.0.0-1017-azureUpgrade linux-image-6.8.0-1052-gkeopUpgrade linux-image-7.0.0-1008-gke-64kUpgrade linux-image-7.0.0-38-generic-64kUpgrade linux-image-azure-6.8Upgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-7.0.0-1014-aws-64kUpgrade linux-image-6.8.0-1071-gcp-fipsUpgrade linux-image-gke-64k-6.8Upgrade linux-image-virtualUpgrade linux-image-gkeopUpgrade linux-image-intel-iotgUpgrade linux-image-7.0.0-1015-oemUpgrade linux-image-7.0.0-1014-gcpUpgrade linux-image-gke-hwe-26.04Upgrade linux-image-azure-fde-6.8Upgrade linux-image-gkeUpgrade linux-image-oem-7.0Upgrade linux-image-ibm-classicUpgrade linux-image-azure-lts-24.04Upgrade linux-image-azure-7.0Upgrade linux-image-7.0.0-1013-oracle-64kUpgrade linux-image-6.8.0-147-genericUpgrade linux-image-6.8.0-1071-azureUpgrade linux-image-oem-26.04aUpgrade linux-image-generic-7.0Upgrade linux-image-fipsUpgrade linux-image-7.0.0-38-genericUpgrade linux-image-gke-64kUpgrade linux-image-realtime-6.8.1Upgrade linux-image-aws-fipsUpgrade linux-image-gke-7.0Upgrade linux-image-6.8.0-1064-oracle-64kUpgrade linux-image-7.0.0-1014-awsUpgrade linux-image-aws-fips-6.8Upgrade linux-image-fips-6.8Upgrade linux-image-gke-64k-7.0Upgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-virtual-hwe-26.04Upgrade linux-image-generic-hwe-26.04Upgrade linux-image-azureUpgrade linux-image-6.8.1-1062-realtimeUpgrade linux-image-6.8.0-147-fipsUpgrade linux-image-generic-64k-6.8Upgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-kvmUpgrade linux-image-azure-fdeUpgrade linux-image-7.0.0-1014-gcp-64kUpgrade linux-image-7.0.0-1008-gkeUpgrade linux-image-oracle-6.8Upgrade linux-image-ibm-6.8Upgrade linux-image-azure-fde-7.0Upgrade linux-image-gcp-64kUpgrade linux-image-aws-64k-6.8Upgrade linux-image-7.0.0-1015-ibmUpgrade linux-image-virtual-6.8Upgrade linux-image-azure-fipsUpgrade linux-image-6.8.0-147-lowlatencyUpgrade linux-image-generic-6.8Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-gcp-fipsUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-aws-lts-24.04Upgrade linux-image-gkeop-6.8Upgrade linux-image-oracle-64k-6.8Upgrade linux-image-oem-26.04Upgrade linux-image-lowlatencyUpgrade linux-image-laptop-23.10Upgrade linux-image-awsUpgrade linux-image-aws-64k-7.0Upgrade linux-image-aws-6.8Upgrade linux-image-oracle-7.0Upgrade linux-image-lowlatency-6.8Upgrade linux-image-gcp-7.0Upgrade linux-image-ibmUpgrade linux-image-gcp-6.8Upgrade linux-image-azure-fde-lts-24.04 | Oct 7, 2026 | Oct 6, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Aug 17, 2026 | Aug 10, 2026 |
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