CVE-2023-53319 (GCVE-0-2023-53319)

Vulnerability from cvelistv5 – Published: 2025-09-16 16:11 – Updated: 2026-01-14 18:32
VLAI?
Title
KVM: arm64: Handle kvm_arm_init failure correctly in finalize_pkvm
Summary
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Handle kvm_arm_init failure correctly in finalize_pkvm Currently there is no synchronisation between finalize_pkvm() and kvm_arm_init() initcalls. The finalize_pkvm() proceeds happily even if kvm_arm_init() fails resulting in the following warning on all the CPUs and eventually a HYP panic: | kvm [1]: IPA Size Limit: 48 bits | kvm [1]: Failed to init hyp memory protection | kvm [1]: error initializing Hyp mode: -22 | | <snip> | | WARNING: CPU: 0 PID: 0 at arch/arm64/kvm/pkvm.c:226 _kvm_host_prot_finalize+0x30/0x50 | Modules linked in: | CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.4.0 #237 | Hardware name: FVP Base RevC (DT) | pstate: 634020c5 (nZCv daIF +PAN -UAO +TCO +DIT -SSBS BTYPE=--) | pc : _kvm_host_prot_finalize+0x30/0x50 | lr : __flush_smp_call_function_queue+0xd8/0x230 | | Call trace: | _kvm_host_prot_finalize+0x3c/0x50 | on_each_cpu_cond_mask+0x3c/0x6c | pkvm_drop_host_privileges+0x4c/0x78 | finalize_pkvm+0x3c/0x5c | do_one_initcall+0xcc/0x240 | do_initcall_level+0x8c/0xac | do_initcalls+0x54/0x94 | do_basic_setup+0x1c/0x28 | kernel_init_freeable+0x100/0x16c | kernel_init+0x20/0x1a0 | ret_from_fork+0x10/0x20 | Failed to finalize Hyp protection: -22 | dtb=fvp-base-revc.dtb | kvm [95]: nVHE hyp BUG at: arch/arm64/kvm/hyp/nvhe/mem_protect.c:540! | kvm [95]: nVHE call trace: | kvm [95]: [<ffff800081052984>] __kvm_nvhe_hyp_panic+0xac/0xf8 | kvm [95]: [<ffff800081059644>] __kvm_nvhe_handle_host_mem_abort+0x1a0/0x2ac | kvm [95]: [<ffff80008105511c>] __kvm_nvhe_handle_trap+0x4c/0x160 | kvm [95]: [<ffff8000810540fc>] __kvm_nvhe___skip_pauth_save+0x4/0x4 | kvm [95]: ---[ end nVHE call trace ]--- | kvm [95]: Hyp Offset: 0xfffe8db00ffa0000 | Kernel panic - not syncing: HYP panic: | PS:a34023c9 PC:0000f250710b973c ESR:00000000f2000800 | FAR:ffff000800cb00d0 HPFAR:000000000880cb00 PAR:0000000000000000 | VCPU:0000000000000000 | CPU: 3 PID: 95 Comm: kworker/u16:2 Tainted: G W 6.4.0 #237 | Hardware name: FVP Base RevC (DT) | Workqueue: rpciod rpc_async_schedule | Call trace: | dump_backtrace+0xec/0x108 | show_stack+0x18/0x2c | dump_stack_lvl+0x50/0x68 | dump_stack+0x18/0x24 | panic+0x138/0x33c | nvhe_hyp_panic_handler+0x100/0x184 | new_slab+0x23c/0x54c | ___slab_alloc+0x3e4/0x770 | kmem_cache_alloc_node+0x1f0/0x278 | __alloc_skb+0xdc/0x294 | tcp_stream_alloc_skb+0x2c/0xf0 | tcp_sendmsg_locked+0x3d0/0xda4 | tcp_sendmsg+0x38/0x5c | inet_sendmsg+0x44/0x60 | sock_sendmsg+0x1c/0x34 | xprt_sock_sendmsg+0xdc/0x274 | xs_tcp_send_request+0x1ac/0x28c | xprt_transmit+0xcc/0x300 | call_transmit+0x78/0x90 | __rpc_execute+0x114/0x3d8 | rpc_async_schedule+0x28/0x48 | process_one_work+0x1d8/0x314 | worker_thread+0x248/0x474 | kthread+0xfc/0x184 | ret_from_fork+0x10/0x20 | SMP: stopping secondary CPUs | Kernel Offset: 0x57c5cb460000 from 0xffff800080000000 | PHYS_OFFSET: 0x80000000 | CPU features: 0x00000000,1035b7a3,ccfe773f | Memory Limit: none | ---[ end Kernel panic - not syncing: HYP panic: | PS:a34023c9 PC:0000f250710b973c ESR:00000000f2000800 | FAR:ffff000800cb00d0 HPFAR:000000000880cb00 PAR:0000000000000000 | VCPU:0000000000000000 ]--- Fix it by checking for the successfull initialisation of kvm_arm_init() in finalize_pkvm() before proceeding any futher.
Severity ?
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 87727ba2bb05cc3cb4233231faa7ab4c7eeb6c73 , < 91450dec0445f4d12f960ba68d8d05c3cb2ab5b8 (git)
Affected: 87727ba2bb05cc3cb4233231faa7ab4c7eeb6c73 , < fa729bc7c9c8c17a2481358c841ef8ca920485d3 (git)
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    Linux Linux Affected: 6.4
Unaffected: 0 , < 6.4 (semver)
Unaffected: 6.4.8 , ≤ 6.4.* (semver)
Unaffected: 6.5 , ≤ * (original_commit_for_fix)
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              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
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              "content": {
                "id": "CVE-2023-53319",
                "options": [
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                    "Exploitation": "none"
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                    "Automatable": "no"
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                "timestamp": "2026-01-14T18:26:55.555978Z",
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            "arch/arm64/kvm/arm.c",
            "arch/arm64/kvm/pkvm.c"
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      "descriptions": [
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          "lang": "en",
          "value": "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  | \u003csnip\u003e\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]:  [\u003cffff800081052984\u003e] __kvm_nvhe_hyp_panic+0xac/0xf8\n  | kvm [95]:  [\u003cffff800081059644\u003e] __kvm_nvhe_handle_host_mem_abort+0x1a0/0x2ac\n  | kvm [95]:  [\u003cffff80008105511c\u003e] __kvm_nvhe_handle_trap+0x4c/0x160\n  | kvm [95]:  [\u003cffff8000810540fc\u003e] __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."
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          "url": "https://git.kernel.org/stable/c/91450dec0445f4d12f960ba68d8d05c3cb2ab5b8"
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          "url": "https://git.kernel.org/stable/c/fa729bc7c9c8c17a2481358c841ef8ca920485d3"
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      ],
      "title": "KVM: arm64: Handle kvm_arm_init failure correctly in finalize_pkvm",
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        "engine": "bippy-1.2.0"
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53319",
    "datePublished": "2025-09-16T16:11:55.490Z",
    "dateReserved": "2025-09-16T16:08:59.563Z",
    "dateUpdated": "2026-01-14T18:32:58.244Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
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    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.5, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-53319\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-01-14T18:26:55.555978Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"description\": \"CWE-noinfo Not enough information\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-01-14T18:26:51.321Z\"}}], \"cna\": {\"title\": \"KVM: arm64: Handle kvm_arm_init failure correctly in finalize_pkvm\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"87727ba2bb05cc3cb4233231faa7ab4c7eeb6c73\", \"lessThan\": \"91450dec0445f4d12f960ba68d8d05c3cb2ab5b8\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"87727ba2bb05cc3cb4233231faa7ab4c7eeb6c73\", \"lessThan\": \"fa729bc7c9c8c17a2481358c841ef8ca920485d3\", \"versionType\": \"git\"}], \"programFiles\": [\"arch/arm64/include/asm/virt.h\", \"arch/arm64/kvm/arm.c\", \"arch/arm64/kvm/pkvm.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.4\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.4\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.4.8\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.4.*\"}, {\"status\": \"unaffected\", \"version\": \"6.5\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"arch/arm64/include/asm/virt.h\", \"arch/arm64/kvm/arm.c\", \"arch/arm64/kvm/pkvm.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/91450dec0445f4d12f960ba68d8d05c3cb2ab5b8\"}, {\"url\": \"https://git.kernel.org/stable/c/fa729bc7c9c8c17a2481358c841ef8ca920485d3\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"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  | \u003csnip\u003e\\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]:  [\u003cffff800081052984\u003e] __kvm_nvhe_hyp_panic+0xac/0xf8\\n  | kvm [95]:  [\u003cffff800081059644\u003e] __kvm_nvhe_handle_host_mem_abort+0x1a0/0x2ac\\n  | kvm [95]:  [\u003cffff80008105511c\u003e] __kvm_nvhe_handle_trap+0x4c/0x160\\n  | kvm [95]:  [\u003cffff8000810540fc\u003e] __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.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.4.8\", \"versionStartIncluding\": \"6.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.5\", \"versionStartIncluding\": \"6.4\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-09-16T16:11:55.490Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-53319\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-14T18:32:58.244Z\", \"dateReserved\": \"2025-09-16T16:08:59.563Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-09-16T16:11:55.490Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.