In the Linux kernel, the following vulnerability has been resolved:
xen/privcmd: fix error exit of privcmd_ioctl_dm_op()
The error exit of privcmd_ioctl_dm_op() is calling unlock_pages() potentially with pages being NULL, leading to a NULL dereference.
Additionally lock_pages() doesn't check for pin_user_pages_fast() having been completely successful, resulting in potentially not locking all pages into memory. This could result in sporadic failures when using the related memory in user mode.
Fix all of that by calling unlock_pages() always with the real number of pinned pages, which will be zero in case pages being NULL, and by checking the number of pages pinned by pin_user_pages_fast() matching the expected number of pages.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-livepatch-5.10.144-127.601Upgrade kernel-tools-debuginfoUpgrade perfUpgrade bpftoolUpgrade kernel-debuginfo-common-aarch64Upgrade python-perf-debuginfoUpgrade kernel-debuginfoUpgrade kernel-tools-develUpgrade kernel-develUpgrade kernelUpgrade kernel-headersUpgrade perf-debuginfoUpgrade kernel-toolsUpgrade kernel-livepatch-5.15.69-37.134Upgrade python-perfUpgrade bpftool-debuginfoUpgrade kernel-debuginfo-common-x86_64 | May 20, 2026 | May 20, 2026 |
| Debian | — | Upgrade linux | Jun 20, 2025 | Jun 20, 2025 |
| Dell Powerstore Dsa2025429 | — | Upgrade Dell PowerStoreOS to the latest version | Dec 3, 2025 | Dec 2, 2025 |
| Dell Powerstore Dsa2026039 | — | Upgrade Dell PowerStoreOS to the latest version | Jan 13, 2026 | Jan 6, 2026 |
| Huawei Euleros 2_0_sp10 | — | Upgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade kernel-tools-libsUpgrade python3-perfUpgrade kernel | Sep 15, 2025 | Sep 9, 2025 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Jun 18, 2025 |
| Ubuntu | — | Upgrade linuxUpgrade linux-gkeUpgrade linux-gkeopUpgrade linux-gcpUpgrade linux-azure-5.15Upgrade linux-riscv-5.15Upgrade linux-intel-iotgUpgrade linux-awsUpgrade linux-azureUpgrade linux-nvidiaUpgrade linux-lowlatency-hwe-5.15Upgrade linux-raspiUpgrade linux-intel-iotg-5.15Upgrade linux-lowlatencyUpgrade linux-realtimeUpgrade linux-aws-5.15Upgrade linux-oracleUpgrade linux-ibmUpgrade linux-kvmUpgrade linux-hwe-5.15Upgrade linux-azure-fdeUpgrade linux-gcp-5.15Upgrade linux-oracle-5.15 | Jun 26, 2025 | Jun 18, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Jun 18, 2025 |
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