{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80726", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.789Z", "datePublished": "2026-09-03T08:21:45.923Z", "dateUpdated": "2026-09-03T08:21:45.923Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-09-03T08:21:45.923Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: x86/mmu: WARN and clear role.invalid when creating a child shadow page\n\nExplicitly clear role.invalid when deriving a child shadow page's role from\nits parent to harden against bugs elsewhere in KVM, as violating KVM's\ninvariant that invalid pages are NOT on the list of active MMU pages leads\nto use-after-free due to __kvm_mmu_prepare_zap_page() using list_add()\ninstead of list_move() when processing an invalid shadow page, i.e. makes a\nbad situation far worse.\n\nYell loudly if the parent is invalid, as it means KVM has missed a validity\ncheck, i.e. KVM is attempting to map memory using an invalid/obsolete root,\nbut continue on as the child is otherwise still a valid shadow page.\n\n ==================================================================\n BUG: KASAN: slab-use-after-free in __kvm_mmu_get_shadow_page+0x1817/0x1860 [kvm]\n Write of size 8 at addr ff11000153dd1368 by task repro/853\n\n CPU: 1 UID: 1000 PID: 853 Comm: repro Not tainted 7.2.0-rc2-3aec122bdcaf-next-vm #5 PREEMPT\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015\n Call Trace:\n <TASK>\n dump_stack_lvl+0x4b/0x70\n print_report+0x153/0x49c\n kasan_report+0xbc/0xf0\n __kvm_mmu_get_shadow_page+0x1817/0x1860 [kvm]\n mmu_alloc_root+0x141/0x320 [kvm]\n kvm_mmu_load+0x612/0x20f0 [kvm]\n kvm_arch_vcpu_ioctl_run+0x3dd5/0x6150 [kvm]\n kvm_vcpu_ioctl+0x5e4/0x10d0 [kvm]\n __x64_sys_ioctl+0x131/0x1b0\n do_syscall_64+0x67/0x5f0\n entry_SYSCALL_64_after_hwframe+0x4b/0x53\n </TASK>\n\n Allocated by task 853:\n kasan_save_stack+0x20/0x40\n kasan_save_track+0x14/0x30\n __kasan_slab_alloc+0x5f/0x70\n kmem_cache_alloc_noprof+0xfe/0x2e0\n __kvm_mmu_topup_memory_cache+0x135/0x530 [kvm]\n paging64_page_fault+0x318/0x1e30 [kvm]\n kvm_mmu_do_page_fault+0x21d/0x630 [kvm]\n kvm_mmu_page_fault+0x18c/0x17b0 [kvm]\n kvm_arch_vcpu_ioctl_run+0x1f35/0x6150 [kvm]\n kvm_vcpu_ioctl+0x5e4/0x10d0 [kvm]\n __x64_sys_ioctl+0x131/0x1b0\n do_syscall_64+0x67/0x5f0\n entry_SYSCALL_64_after_hwframe+0x4b/0x53\n\n Freed by task 853:\n kasan_save_stack+0x20/0x40\n kasan_save_track+0x14/0x30\n kasan_save_free_info+0x3b/0x60\n __kasan_slab_free+0x43/0x70\n kmem_cache_free+0xe2/0x400\n kvm_mmu_commit_zap_page.part.0+0x1e2/0x310 [kvm]\n kvm_mmu_free_roots+0x283/0x560 [kvm]\n kvm_arch_vcpu_ioctl_run+0x33c8/0x6150 [kvm]\n kvm_vcpu_ioctl+0x5e4/0x10d0 [kvm]\n __x64_sys_ioctl+0x131/0x1b0\n do_syscall_64+0x67/0x5f0\n entry_SYSCALL_64_after_hwframe+0x4b/0x53"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/x86/kvm/mmu/mmu.c"], "versions": [{"version": "a770f6f28b1a9287189f3dc8333eb694d9a2f0ab", "lessThan": "9b7984692c18b22d6d61af3f53887fca7fddb0f1", "status": "affected", "versionType": "git"}, {"version": "a770f6f28b1a9287189f3dc8333eb694d9a2f0ab", "lessThan": "f33ecb89d352348ed5e625f6747ac51ede254e1b", "status": "affected", "versionType": "git"}, {"version": "a770f6f28b1a9287189f3dc8333eb694d9a2f0ab", "lessThan": "0af4711862c5b818204d40b21f0859ad51c230e9", "status": "affected", "versionType": "git"}, {"version": "a770f6f28b1a9287189f3dc8333eb694d9a2f0ab", "lessThan": "66bc868a33cf1de43f22a94acd8857e0fe33393f", "status": "affected", "versionType": "git"}, {"version": "a770f6f28b1a9287189f3dc8333eb694d9a2f0ab", "lessThan": "9f7760a2e962cbda0d096a27d394d14ad4d22928", "status": "affected", "versionType": "git"}, {"version": "a770f6f28b1a9287189f3dc8333eb694d9a2f0ab", "lessThan": "5ec42d57655c690234c14aece6dd3f209778c1d8", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/x86/kvm/mmu/mmu.c"], "versions": [{"version": "2.6.30", "status": "affected"}, {"version": "0", "lessThan": "2.6.30", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.183", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.152", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.104", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.45", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.9", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "6.1.183"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "6.6.152"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "6.12.104"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "6.18.45"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "7.1.9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.30", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/9b7984692c18b22d6d61af3f53887fca7fddb0f1"}, {"url": "https://git.kernel.org/stable/c/f33ecb89d352348ed5e625f6747ac51ede254e1b"}, {"url": "https://git.kernel.org/stable/c/0af4711862c5b818204d40b21f0859ad51c230e9"}, {"url": "https://git.kernel.org/stable/c/66bc868a33cf1de43f22a94acd8857e0fe33393f"}, {"url": "https://git.kernel.org/stable/c/9f7760a2e962cbda0d096a27d394d14ad4d22928"}, {"url": "https://git.kernel.org/stable/c/5ec42d57655c690234c14aece6dd3f209778c1d8"}], "title": "KVM: x86/mmu: WARN and clear role.invalid when creating a child shadow page", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["arch/x86/kvm/mmu/mmu.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "9b7984692c18b22d6d61af3f53887fca7fddb0f1", "status": "affected", "version": "a770f6f28b1a9287189f3dc8333eb694d9a2f0ab", "versionType": "git"}, {"lessThan": "f33ecb89d352348ed5e625f6747ac51ede254e1b", "status": "affected", "version": "a770f6f28b1a9287189f3dc8333eb694d9a2f0ab", "versionType": "git"}, {"lessThan": "0af4711862c5b818204d40b21f0859ad51c230e9", "status": "affected", "version": "a770f6f28b1a9287189f3dc8333eb694d9a2f0ab", "versionType": "git"}, {"lessThan": "66bc868a33cf1de43f22a94acd8857e0fe33393f", "status": "affected", "version": "a770f6f28b1a9287189f3dc8333eb694d9a2f0ab", "versionType": "git"}, {"lessThan": "9f7760a2e962cbda0d096a27d394d14ad4d22928", "status": "affected", "version": "a770f6f28b1a9287189f3dc8333eb694d9a2f0ab", "versionType": "git"}, {"lessThan": "5ec42d57655c690234c14aece6dd3f209778c1d8", "status": "affected", "version": "a770f6f28b1a9287189f3dc8333eb694d9a2f0ab", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["arch/x86/kvm/mmu/mmu.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.30"}, {"lessThan": "2.6.30", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.183", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.152", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.104", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.45", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.9", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: x86/mmu: WARN and clear role.invalid when creating a child shadow page\n\nExplicitly clear role.invalid when deriving a child shadow page's role from\nits parent to harden against bugs elsewhere in KVM, as violating KVM's\ninvariant that invalid pages are NOT on the list of active MMU pages leads\nto use-after-free due to __kvm_mmu_prepare_zap_page() using list_add()\ninstead of list_move() when processing an invalid shadow page, i.e. makes a\nbad situation far worse.\n\nYell loudly if the parent is invalid, as it means KVM has missed a validity\ncheck, i.e. KVM is attempting to map memory using an invalid/obsolete root,\nbut continue on as the child is otherwise still a valid shadow page.\n\n ==================================================================\n BUG: KASAN: slab-use-after-free in __kvm_mmu_get_shadow_page+0x1817/0x1860 [kvm]\n Write of size 8 at addr ff11000153dd1368 by task repro/853\n\n CPU: 1 UID: 1000 PID: 853 Comm: repro Not tainted 7.2.0-rc2-3aec122bdcaf-next-vm #5 PREEMPT\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015\n Call Trace:\n <TASK>\n dump_stack_lvl+0x4b/0x70\n print_report+0x153/0x49c\n kasan_report+0xbc/0xf0\n __kvm_mmu_get_shadow_page+0x1817/0x1860 [kvm]\n mmu_alloc_root+0x141/0x320 [kvm]\n kvm_mmu_load+0x612/0x20f0 [kvm]\n kvm_arch_vcpu_ioctl_run+0x3dd5/0x6150 [kvm]\n kvm_vcpu_ioctl+0x5e4/0x10d0 [kvm]\n __x64_sys_ioctl+0x131/0x1b0\n do_syscall_64+0x67/0x5f0\n entry_SYSCALL_64_after_hwframe+0x4b/0x53\n </TASK>\n\n Allocated by task 853:\n kasan_save_stack+0x20/0x40\n kasan_save_track+0x14/0x30\n __kasan_slab_alloc+0x5f/0x70\n kmem_cache_alloc_noprof+0xfe/0x2e0\n __kvm_mmu_topup_memory_cache+0x135/0x530 [kvm]\n paging64_page_fault+0x318/0x1e30 [kvm]\n kvm_mmu_do_page_fault+0x21d/0x630 [kvm]\n kvm_mmu_page_fault+0x18c/0x17b0 [kvm]\n kvm_arch_vcpu_ioctl_run+0x1f35/0x6150 [kvm]\n kvm_vcpu_ioctl+0x5e4/0x10d0 [kvm]\n __x64_sys_ioctl+0x131/0x1b0\n do_syscall_64+0x67/0x5f0\n entry_SYSCALL_64_after_hwframe+0x4b/0x53\n\n Freed by task 853:\n kasan_save_stack+0x20/0x40\n kasan_save_track+0x14/0x30\n kasan_save_free_info+0x3b/0x60\n __kasan_slab_free+0x43/0x70\n kmem_cache_free+0xe2/0x400\n kvm_mmu_commit_zap_page.part.0+0x1e2/0x310 [kvm]\n kvm_mmu_free_roots+0x283/0x560 [kvm]\n kvm_arch_vcpu_ioctl_run+0x33c8/0x6150 [kvm]\n kvm_vcpu_ioctl+0x5e4/0x10d0 [kvm]\n __x64_sys_ioctl+0x131/0x1b0\n do_syscall_64+0x67/0x5f0\n entry_SYSCALL_64_after_hwframe+0x4b/0x53"}], "id": "CVE-2026-80726", "lastModified": "2026-09-03T13:06:11.020", "metrics": {}, "published": "2026-09-03T13:06:11.020", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0af4711862c5b818204d40b21f0859ad51c230e9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5ec42d57655c690234c14aece6dd3f209778c1d8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/66bc868a33cf1de43f22a94acd8857e0fe33393f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9b7984692c18b22d6d61af3f53887fca7fddb0f1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9f7760a2e962cbda0d096a27d394d14ad4d22928"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f33ecb89d352348ed5e625f6747ac51ede254e1b"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a770f6f28b1a9287189f3dc8333eb694d9a2f0ab,9b7984692c18b22d6d61af3f53887fca7fddb0f1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a770f6f28b1a9287189f3dc8333eb694d9a2f0ab,f33ecb89d352348ed5e625f6747ac51ede254e1b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a770f6f28b1a9287189f3dc8333eb694d9a2f0ab,0af4711862c5b818204d40b21f0859ad51c230e9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a770f6f28b1a9287189f3dc8333eb694d9a2f0ab,66bc868a33cf1de43f22a94acd8857e0fe33393f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a770f6f28b1a9287189f3dc8333eb694d9a2f0ab,9f7760a2e962cbda0d096a27d394d14ad4d22928)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[a770f6f28b1a9287189f3dc8333eb694d9a2f0ab,5ec42d57655c690234c14aece6dd3f209778c1d8)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.6.30"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.30)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.183,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.152,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.104,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.45,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.9,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-03T12:30:03.815072+00:00", "updated": "2026-09-03T13:15:04.690660+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-416"]}