In the Linux kernel, the following vulnerability has been resolved:
x86/hyperv: Fix NULL deref in set_hv_tscchange_cb() if Hyper-V setup fails
Check for a valid hv_vp_index array prior to derefencing hv_vp_index when setting Hyper-V's TSC change callback. If Hyper-V setup failed in hyperv_init(), the kernel will still report that it's running under Hyper-V, but will have silently disabled nearly all functionality.
BUG: kernel NULL pointer dereference, address: 0000000000000010 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] SMP CPU: 4 PID: 1 Comm: swapper/0 Not tainted 5.15.0-rc2+ #75 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015 RIP: 0010:set_hv_tscchange_cb+0x15/0xa0 Code: <8b> 04 82 8b 15 12 17 85 01 48 c1 e0 20 48 0d ee 00 01 00 f6 c6 08 ... Call Trace: kvm_arch_init+0x17c/0x280 kvm_init+0x31/0x330 vmx_init+0xba/0x13a do_one_initcall+0x41/0x1c0 kernel_init_freeable+0x1f2/0x23b kernel_init+0x16/0x120 ret_from_fork+0x22/0x30
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-develUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-tools-develUpgrade kernel-tools-debuginfoUpgrade perfUpgrade bpftoolUpgrade kernel-toolsUpgrade perf-debuginfoUpgrade kernel-headersUpgrade kernelUpgrade kernel-debuginfo-common-x86_64Upgrade bpftool-debuginfoUpgrade kernel-debuginfoUpgrade python-perf-debuginfoUpgrade python-perfUpgrade kernel-livepatch-5.10.82-83.359 | Aug 28, 2024 | Apr 10, 2024 |
| Debian | — | Upgrade linux | Jul 30, 2024 | Apr 10, 2024 |
| Huawei Euleros 2_0_sp10 | — | Upgrade kernel-abi-stablelistsUpgrade kernelUpgrade python3-perfUpgrade kernel-tools-libsUpgrade kernel-tools | Jul 16, 2024 | Apr 10, 2024 |
| Huawei Euleros 2_0_sp9 | — | Upgrade kernel-tools-libsUpgrade kernelUpgrade python3-perfUpgrade kernel-tools | Jul 17, 2024 | Apr 10, 2024 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Apr 10, 2024 |
| Suse | — | Upgrade dlm-kmp-rtUpgrade kernel-defaultUpgrade kernel-obs-buildUpgrade reiserfs-kmp-rtUpgrade dtb-allwinnerUpgrade dtb-nvidiaUpgrade kselftests-kmp-defaultUpgrade kernel-rt-extraUpgrade dtb-armUpgrade kernel-devel-rtUpgrade kselftests-kmp-rtUpgrade dlm-kmp-azureUpgrade kernel-rt-livepatch-develUpgrade kernel-rt-develUpgrade cluster-md-kmp-64kbUpgrade kernel-rt_debug-vdsoUpgrade dtb-xilinxUpgrade dtb-qcomUpgrade dtb-mediatekUpgrade dtb-sprdUpgrade kernel-rt_debug-livepatch-develUpgrade kernel-source-vanillaUpgrade ocfs2-kmp-azureUpgrade dtb-socionextUpgrade dlm-kmp-defaultUpgrade kernel-64kb-extraUpgrade kernel-rt-vdsoUpgrade kernel-default-manUpgrade kernel-docsUpgrade kernel-rt-livepatchUpgrade kernel-azureUpgrade gfs2-kmp-defaultUpgrade kernel-default-optionalUpgrade reiserfs-kmp-azureUpgrade kernel-default-baseUpgrade dtb-rockchipUpgrade kernel-default-base-rebuildUpgrade cluster-md-kmp-defaultUpgrade kernel-develUpgrade kernel-azure-vdsoUpgrade kernel-azure-develUpgrade kernel-debug-vdsoUpgrade ocfs2-kmp-defaultUpgrade kernel-rtUpgrade dtb-renesasUpgrade kernel-default-livepatch-develUpgrade kernel-syms-rtUpgrade dtb-amdUpgrade kselftests-kmp-64kbUpgrade kernel-azure-optionalUpgrade kernel-64kb-develUpgrade kernel-source-rtUpgrade dtb-hisiliconUpgrade kernel-debugUpgrade dtb-marvellUpgrade dtb-alteraUpgrade dtb-freescaleUpgrade kernel-debug-develUpgrade kernel-kvmsmallUpgrade dlm-kmp-64kbUpgrade kernel-kvmsmall-develUpgrade kernel-64kbUpgrade kernel-rt-optionalUpgrade kselftests-kmp-azureUpgrade dtb-lgUpgrade kernel-azure-livepatch-develUpgrade kernel-64kb-optionalUpgrade kernel-kvmsmall-livepatch-develUpgrade cluster-md-kmp-rtUpgrade kernel-rt_debugUpgrade kernel-azure-extraUpgrade gfs2-kmp-azureUpgrade dtb-amlogicUpgrade cluster-md-kmp-azureUpgrade ocfs2-kmp-rtUpgrade kernel-macrosUpgrade kernel-default-livepatchUpgrade dtb-appleUpgrade kernel-rt_debug-develUpgrade kernel-kvmsmall-vdsoUpgrade kernel-default-develUpgrade dtb-apmUpgrade gfs2-kmp-64kbUpgrade dtb-amazonUpgrade ocfs2-kmp-64kbUpgrade dtb-broadcomUpgrade reiserfs-kmp-64kbUpgrade kernel-source-azureUpgrade reiserfs-kmp-defaultUpgrade kernel-azure-baseUpgrade dtb-exynosUpgrade kernel-devel-azureUpgrade kernel-64kb-livepatch-develUpgrade kernel-docs-htmlUpgrade kernel-default-extraUpgrade kernel-debug-livepatch-develUpgrade kernel-default-vdsoUpgrade kernel-zfcpdumpUpgrade gfs2-kmp-rtUpgrade kernel-syms-azureUpgrade kernel-symsUpgrade kernel-obs-qaUpgrade kernel-sourceUpgrade dtb-cavium | Aug 9, 2024 | Apr 10, 2024 |
| Ubuntu | — | Upgrade linux-bluefieldUpgrade linux-raspiUpgrade linux-awsUpgrade linuxUpgrade linux-raspi-5.4Upgrade linux-oracle-5.4Upgrade linux-ibm-5.4Upgrade linux-gkeopUpgrade linux-gcp-5.4Upgrade linux-kvmUpgrade linux-gcp-fipsUpgrade linux-hwe-5.4Upgrade linux-azureUpgrade linux-oracleUpgrade linux-gcpUpgrade linux-azure-fipsUpgrade linux-fipsUpgrade linux-aws-5.4Upgrade linux-ibmUpgrade linux-azure-5.4Upgrade linux-aws-fips | Nov 19, 2024 | Apr 10, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Apr 10, 2024 |
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