In the Linux kernel, the following vulnerability has been resolved:
ipc/shm: serialize orphan cleanup with shm_nattch updates
shm_destroy_orphaned() walks the shm idr under shm_ids(ns).rwsem, but that does not serialize all fields tested by shm_may_destroy(). In particular, shm_nattch is updated while holding shm_perm.lock, and attach paths can do that without holding the rwsem.
Do not decide that an orphaned segment is unused before taking the object lock. Move the shm_may_destroy() check under shm_perm.lock, matching the other destroy paths, and unlock the segment when it no longer qualifies for removal.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-tools-develUpgrade kernel-headersUpgrade kernel-develUpgrade python-perf-debuginfoUpgrade perf-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade perfUpgrade kernel-toolsUpgrade kernel-tools-debuginfoUpgrade bpftoolUpgrade kernelUpgrade kernel-livepatch-5.15.210-148.245Upgrade kernel-debuginfo-common-x86_64Upgrade bpftool-debuginfoUpgrade kernel-debuginfoUpgrade kernel-livepatch-5.10.259-258.1043Upgrade python-perf | Jul 8, 2026 | Jul 8, 2026 |
| Amazon_linux_2023 | — | Upgrade kernel6.12-headersUpgrade python3-perf-debuginfoUpgrade kernel6.18-toolsUpgrade kernel-livepatch-6.1.176-220.358Upgrade python3-perf6.12-debuginfoUpgrade python3-perfUpgrade bpftoolUpgrade kernel-modules-extraUpgrade kernel6.18-develUpgrade kernel-develUpgrade kernel-modules-extra-commonUpgrade kernel6.18-debuginfo-common-x86_64Upgrade kernel6.18-headersUpgrade kernel-tools-develUpgrade kernel6.18-debuginfo-common-aarch64Upgrade kernel6.18-tools-develUpgrade kernel-toolsUpgrade kernel6.18-modules-extraUpgrade kernel-debuginfo-common-aarch64Upgrade kernel6.12-tools-debuginfoUpgrade perfUpgrade python3-perf6.12Upgrade kernel6.12-develUpgrade perf6.12-debuginfoUpgrade kernel6.18Upgrade kernel6.18-modules-extra-commonUpgrade kernel-tools-debuginfoUpgrade kernel6.12-toolsUpgrade bpftool6.18Upgrade bpftool6.18-debuginfoUpgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel-debuginfoUpgrade kernel6.12-tools-develUpgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel-livepatch-6.12.94-123.174Upgrade perf-debuginfoUpgrade kernelUpgrade kernel-livepatch-6.18.36-69.134Upgrade kernel-headersUpgrade kernel6.12-debuginfoUpgrade kernel6.12Upgrade bpftool6.12Upgrade kernel6.18-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade bpftool6.12-debuginfoUpgrade python3-perf6.18Upgrade perf6.18Upgrade perf6.12Upgrade microvm-kernel6.18Upgrade bpftool-debuginfoUpgrade kernel6.18-tools-debuginfoUpgrade python3-perf6.18-debuginfoUpgrade perf6.18-debuginfoUpgrade kernel6.12-modules-extraUpgrade kernel6.12-modules-extra-common | Jul 8, 2026 | Jun 24, 2026 |
| Debian | — | Upgrade linuxUpgrade linux-6.1 | Jul 5, 2026 | Jul 5, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Jun 24, 2026 |
| Ubuntu | — | Upgrade linux-image-nvidia-64k-hwe-26.04Upgrade linux-image-nvidia-bos-64kUpgrade linux-image-oem-26.04aUpgrade linux-image-ibmUpgrade linux-image-nvidiaUpgrade linux-image-generic-64kUpgrade linux-image-oem-26.04Upgrade linux-image-azure-lts-26.04Upgrade linux-image-nvidia-7.0Upgrade linux-image-7.0.0-2018-nvidia-bos-64kUpgrade linux-image-gcpUpgrade linux-image-nvidia-hwe-26.04Upgrade linux-image-7.0.0-1018-nvidiaUpgrade linux-image-raspiUpgrade linux-image-genericUpgrade linux-image-ibm-7.0Upgrade linux-image-gke-64kUpgrade linux-image-7.0.0-1011-oracleUpgrade linux-image-azureUpgrade linux-image-nvidia-bos-7.0Upgrade linux-image-7.0.0-1006-gkeUpgrade linux-image-7.0.0-31-genericUpgrade linux-image-7.0.0-31-realtimeUpgrade linux-image-7.0.0-1012-aws-64kUpgrade linux-image-gke-64k-7.0Upgrade linux-image-realtime-hwe-26.04Upgrade linux-image-virtual-hwe-26.04Upgrade linux-image-raspi-realtimeUpgrade linux-image-7.0.0-1011-gcp-64kUpgrade linux-image-oracle-64kUpgrade linux-image-oracle-64k-7.0Upgrade linux-image-oracle-7.0Upgrade linux-image-7.0.0-31-realtime-64kUpgrade linux-image-oem-26.04bUpgrade linux-image-nvidia-bosUpgrade linux-image-7.0.0-1013-ibmUpgrade linux-image-nvidia-bos-64k-7.0Upgrade linux-image-7.0.0-1011-gcpUpgrade linux-image-nvidia-64k-7.0Upgrade linux-image-7.0.0-1012-awsUpgrade linux-image-7.0.0-2018-nvidia-bosUpgrade linux-image-oem-7.0Upgrade linux-image-virtualUpgrade linux-image-raspi-7.0Upgrade linux-image-gcp-7.0Upgrade linux-image-7.0.0-1019-raspiUpgrade linux-image-gke-hwe-26.04Upgrade linux-image-aws-7.0Upgrade linux-image-gkeUpgrade linux-image-realtime-64kUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-7.0.0-1006-gke-64kUpgrade linux-image-aws-64k-7.0Upgrade linux-image-generic-7.0Upgrade linux-image-gcp-64k-7.0Upgrade linux-image-realtime-64k-hwe-26.04Upgrade linux-image-virtual-7.0Upgrade linux-image-nvidia-64kUpgrade linux-image-raspi-realtime-7.0Upgrade linux-image-generic-64k-hwe-26.04Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-generic-hwe-26.04Upgrade linux-image-7.0.0-1019-raspi-realtimeUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-oracleUpgrade linux-image-gke-64k-hwe-26.04Upgrade linux-image-gcp-64kUpgrade linux-image-7.0.0-1018-nvidia-64kUpgrade linux-image-7.0.0-1011-oracle-64kUpgrade linux-image-realtime-64k-7.0Upgrade linux-image-aws-64kUpgrade linux-image-7.0.0-1014-azureUpgrade linux-image-7.0.0-1013-oemUpgrade linux-image-7.0.0-31-generic-64kUpgrade linux-image-gke-7.0Upgrade linux-image-awsUpgrade linux-image-generic-64k-7.0Upgrade linux-image-azure-7.0Upgrade linux-image-realtime-7.0Upgrade linux-image-realtime | Sep 14, 2026 | Sep 7, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 6, 2026 | Jun 24, 2026 |
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