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In the Linux kernel, the following vulnerability has been resolved:
iommu/vt-d: Avoid memory allocation in iommu_suspend()
The iommu_suspend() syscore suspend callback is invoked with IRQ disabled. Allocating memory with the GFP_KERNEL flag may re-enable IRQs during the suspend callback, which can cause intermittent suspend/hibernation problems with the following kernel traces:
Calling iommu_suspend+0x0/0x1d0 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 15 at kernel/time/timekeeping.c:868 ktime_get+0x9b/0xb0 ... CPU: 0 PID: 15 Comm: rcu_preempt Tainted: G U E 6.3-intel #r1 RIP: 0010:ktime_get+0x9b/0xb0 ... Call Trace: <IRQ> tick_sched_timer+0x22/0x90 ? __pfx_tick_sched_timer+0x10/0x10 __hrtimer_run_queues+0x111/0x2b0 hrtimer_interrupt+0xfa/0x230 __sysvec_apic_timer_interrupt+0x63/0x140 sysvec_apic_timer_interrupt+0x7b/0xa0 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x1f/0x30 ... ------------[ cut here ]------------ Interrupts enabled after iommu_suspend+0x0/0x1d0 WARNING: CPU: 0 PID: 27420 at drivers/base/syscore.c:68 syscore_suspend+0x147/0x270 CPU: 0 PID: 27420 Comm: rtcwake Tainted: G U W E 6.3-intel #r1 RIP: 0010:syscore_suspend+0x147/0x270 ... Call Trace: <TASK> hibernation_snapshot+0x25b/0x670 hibernate+0xcd/0x390 state_store+0xcf/0xe0 kobj_attr_store+0x13/0x30 sysfs_kf_write+0x3f/0x50 kernfs_fop_write_iter+0x128/0x200 vfs_write+0x1fd/0x3c0 ksys_write+0x6f/0xf0 __x64_sys_write+0x1d/0x30 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc
Given that only 4 words memory is needed, avoid the memory allocation in iommu_suspend().
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-develUpgrade kernelUpgrade kernel-debuginfo-common-aarch64Upgrade python-perf-debuginfoUpgrade perfUpgrade kernel-tools-develUpgrade kernel-livepatch-5.15.136-90.144Upgrade kernel-headersUpgrade perf-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-debuginfoUpgrade kernel-toolsUpgrade python-perfUpgrade bpftool-debuginfoUpgrade bpftoolUpgrade kernel-debuginfo-common-x86_64 | Jul 9, 2024 | Mar 2, 2024 |
| Amazon_linux_2023 | — | Upgrade kernel-headersUpgrade kernel-libbpf-develUpgrade kernel-debuginfo-common-x86_64Upgrade kernelUpgrade perf-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-develUpgrade kernel-livepatch-6.1.59-84.139Upgrade bpftoolUpgrade kernel-libbpf-staticUpgrade kernel-toolsUpgrade perfUpgrade kernel-tools-debuginfoUpgrade python3-perf-debuginfoUpgrade kernel-tools-develUpgrade kernel-libbpfUpgrade kernel-modules-extraUpgrade python3-perfUpgrade kernel-debuginfoUpgrade kernel-debuginfo-common-aarch64 | Feb 17, 2025 | Mar 2, 2024 |
| Debian | — | Upgrade linux | Jul 30, 2024 | Mar 2, 2024 |
| Suse | — | Upgrade dtb-alteraUpgrade kernel-docs-htmlUpgrade kernel-rt-livepatch-develUpgrade kernel-default-livepatch-develUpgrade kernel-default-baseUpgrade dtb-marvellUpgrade kernel-rt_debug-livepatch-develUpgrade kselftests-kmp-azureUpgrade gfs2-kmp-azureUpgrade kernel-rtUpgrade kernel-rt_debug-develUpgrade dtb-broadcomUpgrade dtb-allwinnerUpgrade kernel-defaultUpgrade kernel-default-base-rebuildUpgrade dtb-qcomUpgrade kernel-rt-extraUpgrade dtb-caviumUpgrade kernel-debug-vdsoUpgrade kernel-azure-optionalUpgrade dtb-nvidiaUpgrade dtb-rockchipUpgrade kernel-azureUpgrade kernel-default-vdsoUpgrade reiserfs-kmp-64kbUpgrade kernel-kvmsmall-vdsoUpgrade dlm-kmp-rtUpgrade cluster-md-kmp-64kbUpgrade kernel-obs-buildUpgrade kernel-source-vanillaUpgrade ocfs2-kmp-64kbUpgrade kernel-azure-vdsoUpgrade kernel-source-rtUpgrade kernel-rt-vdsoUpgrade ocfs2-kmp-defaultUpgrade kernel-64kb-extraUpgrade dtb-sprdUpgrade gfs2-kmp-defaultUpgrade kernel-rt-optionalUpgrade kernel-azure-develUpgrade kselftests-kmp-rtUpgrade reiserfs-kmp-rtUpgrade dlm-kmp-defaultUpgrade dtb-socionextUpgrade kernel-rt_debugUpgrade kernel-default-livepatchUpgrade kernel-macrosUpgrade kselftests-kmp-64kbUpgrade dtb-exynosUpgrade cluster-md-kmp-defaultUpgrade kernel-debug-develUpgrade kernel-default-optionalUpgrade kernel-azure-livepatch-develUpgrade kernel-docsUpgrade gfs2-kmp-64kbUpgrade kernel-symsUpgrade dtb-amdUpgrade kernel-rt-livepatchUpgrade dtb-xilinxUpgrade ocfs2-kmp-azureUpgrade kernel-syms-azureUpgrade kernel-default-extraUpgrade kernel-obs-qaUpgrade kernel-default-develUpgrade kernel-debug-livepatch-develUpgrade gfs2-kmp-rtUpgrade dtb-freescaleUpgrade dlm-kmp-64kbUpgrade kselftests-kmp-defaultUpgrade kernel-azure-extraUpgrade cluster-md-kmp-azureUpgrade kernel-64kb-livepatch-develUpgrade kernel-syms-rtUpgrade kernel-sourceUpgrade dtb-appleUpgrade dtb-lgUpgrade kernel-rt_debug-vdsoUpgrade kernel-source-azureUpgrade dlm-kmp-azureUpgrade reiserfs-kmp-azureUpgrade dtb-amlogicUpgrade reiserfs-kmp-defaultUpgrade kernel-kvmsmall-livepatch-develUpgrade kernel-rt-develUpgrade dtb-renesasUpgrade kernel-64kbUpgrade cluster-md-kmp-rtUpgrade ocfs2-kmp-rtUpgrade kernel-devel-azureUpgrade dtb-apmUpgrade kernel-devel-rtUpgrade kernel-develUpgrade kernel-64kb-develUpgrade dtb-mediatekUpgrade dtb-hisiliconUpgrade kernel-zfcpdumpUpgrade kernel-kvmsmall-develUpgrade kernel-debugUpgrade kernel-64kb-optionalUpgrade kernel-kvmsmallUpgrade dtb-armUpgrade dtb-amazon | Mar 13, 2024 | Mar 2, 2024 |
| Ubuntu | — | Upgrade linux-azureUpgrade linux-lowlatencyUpgrade linux-aws-5.15Upgrade linux-raspiUpgrade linux-intel-iotg-5.15Upgrade linux-gkeop-5.15Upgrade linux-hwe-5.15Upgrade linux-azure-fdeUpgrade linux-awsUpgrade linux-gkeopUpgrade linuxUpgrade linux-oracle-5.15Upgrade linux-aws-fipsUpgrade linux-nvidia-6.5Upgrade linux-intel-iotgUpgrade linux-nvidia-tegraUpgrade linux-ibmUpgrade linux-gcp-5.15Upgrade linux-azure-5.15Upgrade linux-gcp-fipsUpgrade linux-ibm-5.15Upgrade linux-kvmUpgrade linux-riscv-5.15Upgrade linux-nvidiaUpgrade linux-gcpUpgrade linux-gkeUpgrade linux-xilinx-zynqmpUpgrade linux-oracleUpgrade linux-nvidia-tegra-5.15Upgrade linux-bluefieldUpgrade linux-fipsUpgrade linux-nvidia-tegra-igxUpgrade linux-realtimeUpgrade linux-intel-iot-realtimeUpgrade linux-lowlatency-hwe-5.15 | Nov 19, 2024 | Mar 2, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 14, 2025 | Mar 2, 2024 |
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