{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2023-53319", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-53319", "idYear": 2023, "status": "PUBLISHED", "publishedAt": "2025-09-16T16:11:55.490Z", "updatedAt": "2026-05-11T19:42:38.960Z", "importedAt": "2026-10-24T01:57:03.413Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "KVM: arm64: Handle kvm_arm_init failure correctly in finalize_pkvm", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: Handle kvm_arm_init failure correctly in finalize_pkvm\n\nCurrently there is no synchronisation between finalize_pkvm() and\nkvm_arm_init() initcalls. The finalize_pkvm() proceeds happily even if\nkvm_arm_init() fails resulting in the following warning on all the CPUs\nand eventually a HYP panic:\n\n | kvm [1]: IPA Size Limit: 48 bits\n | kvm [1]: Failed to init hyp memory protection\n | kvm [1]: error initializing Hyp mode: -22\n |\n | \n |\n | WARNING: CPU: 0 PID: 0 at arch/arm64/kvm/pkvm.c:226 _kvm_host_prot_finalize+0x30/0x50\n | Modules linked in:\n | CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.4.0 #237\n | Hardware name: FVP Base RevC (DT)\n | pstate: 634020c5 (nZCv daIF +PAN -UAO +TCO +DIT -SSBS BTYPE=--)\n | pc : _kvm_host_prot_finalize+0x30/0x50\n | lr : __flush_smp_call_function_queue+0xd8/0x230\n |\n | Call trace:\n | _kvm_host_prot_finalize+0x3c/0x50\n | on_each_cpu_cond_mask+0x3c/0x6c\n | pkvm_drop_host_privileges+0x4c/0x78\n | finalize_pkvm+0x3c/0x5c\n | do_one_initcall+0xcc/0x240\n | do_initcall_level+0x8c/0xac\n | do_initcalls+0x54/0x94\n | do_basic_setup+0x1c/0x28\n | kernel_init_freeable+0x100/0x16c\n | kernel_init+0x20/0x1a0\n | ret_from_fork+0x10/0x20\n | Failed to finalize Hyp protection: -22\n | dtb=fvp-base-revc.dtb\n | kvm [95]: nVHE hyp BUG at: arch/arm64/kvm/hyp/nvhe/mem_protect.c:540!\n | kvm [95]: nVHE call trace:\n | kvm [95]: [] __kvm_nvhe_hyp_panic+0xac/0xf8\n | kvm [95]: [] __kvm_nvhe_handle_host_mem_abort+0x1a0/0x2ac\n | kvm [95]: [] __kvm_nvhe_handle_trap+0x4c/0x160\n | kvm [95]: [] __kvm_nvhe___skip_pauth_save+0x4/0x4\n | kvm [95]: ---[ end nVHE call trace ]---\n | kvm [95]: Hyp Offset: 0xfffe8db00ffa0000\n | Kernel panic - not syncing: HYP panic:\n | PS:a34023c9 PC:0000f250710b973c ESR:00000000f2000800\n | FAR:ffff000800cb00d0 HPFAR:000000000880cb00 PAR:0000000000000000\n | VCPU:0000000000000000\n | CPU: 3 PID: 95 Comm: kworker/u16:2 Tainted: G W 6.4.0 #237\n | Hardware name: FVP Base RevC (DT)\n | Workqueue: rpciod rpc_async_schedule\n | Call trace:\n | dump_backtrace+0xec/0x108\n | show_stack+0x18/0x2c\n | dump_stack_lvl+0x50/0x68\n | dump_stack+0x18/0x24\n | panic+0x138/0x33c\n | nvhe_hyp_panic_handler+0x100/0x184\n | new_slab+0x23c/0x54c\n | ___slab_alloc+0x3e4/0x770\n | kmem_cache_alloc_node+0x1f0/0x278\n | __alloc_skb+0xdc/0x294\n | tcp_stream_alloc_skb+0x2c/0xf0\n | tcp_sendmsg_locked+0x3d0/0xda4\n | tcp_sendmsg+0x38/0x5c\n | inet_sendmsg+0x44/0x60\n | sock_sendmsg+0x1c/0x34\n | xprt_sock_sendmsg+0xdc/0x274\n | xs_tcp_send_request+0x1ac/0x28c\n | xprt_transmit+0xcc/0x300\n | call_transmit+0x78/0x90\n | __rpc_execute+0x114/0x3d8\n | rpc_async_schedule+0x28/0x48\n | process_one_work+0x1d8/0x314\n | worker_thread+0x248/0x474\n | kthread+0xfc/0x184\n | ret_from_fork+0x10/0x20\n | SMP: stopping secondary CPUs\n | Kernel Offset: 0x57c5cb460000 from 0xffff800080000000\n | PHYS_OFFSET: 0x80000000\n | CPU features: 0x00000000,1035b7a3,ccfe773f\n | Memory Limit: none\n | ---[ end Kernel panic - not syncing: HYP panic:\n | PS:a34023c9 PC:0000f250710b973c ESR:00000000f2000800\n | FAR:ffff000800cb00d0 HPFAR:000000000880cb00 PAR:0000000000000000\n | VCPU:0000000000000000 ]---\n\nFix it by checking for the successfull initialisation of kvm_arm_init()\nin finalize_pkvm() before proceeding any futher.", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "87727ba2bb05cc3cb4233231faa7ab4c7eeb6c73", "status": "affected", "versionType": "git", "lessThan": "91450dec0445f4d12f960ba68d8d05c3cb2ab5b8" }, { "version": "87727ba2bb05cc3cb4233231faa7ab4c7eeb6c73", "status": "affected", "versionType": "git", "lessThan": "fa729bc7c9c8c17a2481358c841ef8ca920485d3" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "6.4", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "6.4" }, { "version": "6.4.8", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.4.*" }, { "version": "6.5", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }