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In the Linux kernel, the following vulnerability has been resolved:
mm/secretmem: fix NULL page->mapping dereference in page_is_secretmem()
Check for a NULL page->mapping before dereferencing the mapping in page_is_secretmem(), as the page's mapping can be nullified while gup() is running, e.g. by reclaim or truncation.
BUG: kernel NULL pointer dereference, address: 0000000000000068 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 6 PID: 4173897 Comm: CPU 3/KVM Tainted: G W RIP: 0010:internal_get_user_pages_fast+0x621/0x9d0 Code: <48> 81 7a 68 80 08 04 bc 0f 85 21 ff ff 8 89 c7 be RSP: 0018:ffffaa90087679b0 EFLAGS: 00010046 RAX: ffffe3f37905b900 RBX: 00007f2dd561e000 RCX: ffffe3f37905b934 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffe3f37905b900 ... CR2: 0000000000000068 CR3: 00000004c5898003 CR4: 00000000001726e0 Call Trace: get_user_pages_fast_only+0x13/0x20 hva_to_pfn+0xa9/0x3e0 try_async_pf+0xa1/0x270 direct_page_fault+0x113/0xad0 kvm_mmu_page_fault+0x69/0x680 vmx_handle_exit+0xe1/0x5d0 kvm_arch_vcpu_ioctl_run+0xd81/0x1c70 kvm_vcpu_ioctl+0x267/0x670 __x64_sys_ioctl+0x83/0xa0 do_syscall_64+0x56/0x80 entry_SYSCALL_64_after_hwframe+0x44/0xae
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | Jul 30, 2024 | May 22, 2024 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | May 22, 2024 |
| Suse | — | Upgrade kernel-default-base-rebuildUpgrade dtb-caviumUpgrade kernel-default-livepatchUpgrade dtb-amazonUpgrade cluster-md-kmp-rtUpgrade kernel-obs-qaUpgrade reiserfs-kmp-azureUpgrade ocfs2-kmp-rtUpgrade kernel-64kb-livepatch-develUpgrade kernel-syms-azureUpgrade dtb-qcomUpgrade ocfs2-kmp-64kbUpgrade kernel-rt-livepatchUpgrade kernel-default-extraUpgrade kernel-kvmsmall-livepatch-develUpgrade kernel-source-azureUpgrade dtb-freescaleUpgrade reiserfs-kmp-64kbUpgrade kernel-sourceUpgrade kernel-rtUpgrade kernel-rt_debug-develUpgrade kernel-azure-optionalUpgrade kernel-devel-azureUpgrade dtb-exynosUpgrade kernel-zfcpdumpUpgrade kernel-default-optionalUpgrade kernel-rt-develUpgrade dtb-lgUpgrade dtb-amlogicUpgrade kernel-azure-livepatch-develUpgrade kernel-develUpgrade kernel-default-vdsoUpgrade gfs2-kmp-rtUpgrade dtb-xilinxUpgrade kernel-64kbUpgrade cluster-md-kmp-azureUpgrade kernel-debug-livepatch-develUpgrade gfs2-kmp-64kbUpgrade kernel-symsUpgrade dtb-mediatekUpgrade kernel-devel-rtUpgrade dtb-broadcomUpgrade dlm-kmp-64kbUpgrade kernel-kvmsmallUpgrade dtb-alteraUpgrade gfs2-kmp-azureUpgrade kernel-rt-vdsoUpgrade kselftests-kmp-64kbUpgrade dtb-apmUpgrade kernel-source-rtUpgrade kernel-macrosUpgrade kselftests-kmp-azureUpgrade kernel-azure-develUpgrade kernel-default-develUpgrade kernel-kvmsmall-develUpgrade kernel-rt-optionalUpgrade cluster-md-kmp-defaultUpgrade kernel-syms-rtUpgrade kernel-azure-extraUpgrade kernel-docsUpgrade kernel-rt_debug-vdsoUpgrade kernel-default-baseUpgrade dtb-amdUpgrade dlm-kmp-rtUpgrade dtb-socionextUpgrade dtb-nvidiaUpgrade kernel-source-vanillaUpgrade kernel-64kb-develUpgrade kselftests-kmp-defaultUpgrade kernel-debug-develUpgrade kernel-docs-htmlUpgrade kernel-rt_debug-livepatch-develUpgrade dtb-hisiliconUpgrade dlm-kmp-defaultUpgrade dtb-rockchipUpgrade gfs2-kmp-defaultUpgrade kernel-defaultUpgrade kernel-64kb-extraUpgrade kernel-kvmsmall-vdsoUpgrade kernel-rt-livepatch-develUpgrade kernel-default-livepatch-develUpgrade dtb-marvellUpgrade ocfs2-kmp-defaultUpgrade dlm-kmp-azureUpgrade dtb-sprdUpgrade kernel-azureUpgrade dtb-renesasUpgrade kernel-rt_debugUpgrade kselftests-kmp-rtUpgrade reiserfs-kmp-defaultUpgrade kernel-obs-buildUpgrade kernel-rt-extraUpgrade kernel-64kb-optionalUpgrade reiserfs-kmp-rtUpgrade kernel-azure-vdsoUpgrade kernel-debug-vdsoUpgrade ocfs2-kmp-azureUpgrade dtb-appleUpgrade dtb-armUpgrade dtb-allwinnerUpgrade kernel-debugUpgrade cluster-md-kmp-64kb | Aug 9, 2024 | May 22, 2024 |
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