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CVE-2025-40178 (GCVE-0-2025-40178)

Vulnerability from cvelistv5 – Published: 2025-11-12 21:56 – Updated: 2026-05-11 21:44
VLAI
Title
pid: Add a judgment for ns null in pid_nr_ns
Summary
In the Linux kernel, the following vulnerability has been resolved: pid: Add a judgment for ns null in pid_nr_ns __task_pid_nr_ns ns = task_active_pid_ns(current); pid_nr_ns(rcu_dereference(*task_pid_ptr(task, type)), ns); if (pid && ns->level <= pid->level) { Sometimes null is returned for task_active_pid_ns. Then it will trigger kernel panic in pid_nr_ns. For example: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000058 Mem abort info: ESR = 0x0000000096000007 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x07: level 3 translation fault Data abort info: ISV = 0, ISS = 0x00000007, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 user pgtable: 4k pages, 39-bit VAs, pgdp=00000002175aa000 [0000000000000058] pgd=08000002175ab003, p4d=08000002175ab003, pud=08000002175ab003, pmd=08000002175be003, pte=0000000000000000 pstate: 834000c5 (Nzcv daIF +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : __task_pid_nr_ns+0x74/0xd0 lr : __task_pid_nr_ns+0x24/0xd0 sp : ffffffc08001bd10 x29: ffffffc08001bd10 x28: ffffffd4422b2000 x27: 0000000000000001 x26: ffffffd442821168 x25: ffffffd442821000 x24: 00000f89492eab31 x23: 00000000000000c0 x22: ffffff806f5693c0 x21: ffffff806f5693c0 x20: 0000000000000001 x19: 0000000000000000 x18: 0000000000000000 x17: 00000000529c6ef0 x16: 00000000529c6ef0 x15: 00000000023a1adc x14: 0000000000000003 x13: 00000000007ef6d8 x12: 001167c391c78800 x11: 00ffffffffffffff x10: 0000000000000000 x9 : 0000000000000001 x8 : ffffff80816fa3c0 x7 : 0000000000000000 x6 : 49534d702d535449 x5 : ffffffc080c4c2c0 x4 : ffffffd43ee128c8 x3 : ffffffd43ee124dc x2 : 0000000000000000 x1 : 0000000000000001 x0 : ffffff806f5693c0 Call trace: __task_pid_nr_ns+0x74/0xd0 ... __handle_irq_event_percpu+0xd4/0x284 handle_irq_event+0x48/0xb0 handle_fasteoi_irq+0x160/0x2d8 generic_handle_domain_irq+0x44/0x60 gic_handle_irq+0x4c/0x114 call_on_irq_stack+0x3c/0x74 do_interrupt_handler+0x4c/0x84 el1_interrupt+0x34/0x58 el1h_64_irq_handler+0x18/0x24 el1h_64_irq+0x68/0x6c account_kernel_stack+0x60/0x144 exit_task_stack_account+0x1c/0x80 do_exit+0x7e4/0xaf8 ... get_signal+0x7bc/0x8d8 do_notify_resume+0x128/0x828 el0_svc+0x6c/0x70 el0t_64_sync_handler+0x68/0xbc el0t_64_sync+0x1a8/0x1ac Code: 35fffe54 911a02a8 f9400108 b4000128 (b9405a69) ---[ end trace 0000000000000000 ]--- Kernel panic - not syncing: Oops: Fatal exception in interrupt
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 17cf22c33e1f1b5e435469c84e43872579497653 , < 75dbc029c5359438be4a6f908bfbfdab969af776 (git)
Affected: 17cf22c33e1f1b5e435469c84e43872579497653 , < c2d09d724856b6f82ab688f65fc1ce833bb56333 (git)
Affected: 17cf22c33e1f1b5e435469c84e43872579497653 , < c3b654021931dc806ba086c549e8756c3f204a67 (git)
Affected: 17cf22c33e1f1b5e435469c84e43872579497653 , < e10c36a771c5cc910abd9fe4aa9033ee32a47c38 (git)
Affected: 17cf22c33e1f1b5e435469c84e43872579497653 , < 09d227c59d97efda7d5cc878a4335a6b2bb224c2 (git)
Affected: 17cf22c33e1f1b5e435469c84e43872579497653 , < 2076b916bf41be48799d1443df0f8fc75d12ccd0 (git)
Affected: 17cf22c33e1f1b5e435469c84e43872579497653 , < a0212978af1825b37da0b453b94d9b0e5af11478 (git)
Affected: 17cf22c33e1f1b5e435469c84e43872579497653 , < 006568ab4c5ca2309ceb36fa553e390b4aa9c0c7 (git)
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Linux Linux Affected: 3.8
Unaffected: 0 , < 3.8 (semver)
Unaffected: 5.4.301 , ≤ 5.4.* (semver)
Unaffected: 5.10.246 , ≤ 5.10.* (semver)
Unaffected: 5.15.195 , ≤ 5.15.* (semver)
Unaffected: 6.1.157 , ≤ 6.1.* (semver)
Unaffected: 6.6.113 , ≤ 6.6.* (semver)
Unaffected: 6.12.54 , ≤ 6.12.* (semver)
Unaffected: 6.17.4 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/pid.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "17cf22c33e1f1b5e435469c84e43872579497653",
              "versionType": "git"
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              "status": "affected",
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            }
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        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/pid.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "3.8"
            },
            {
              "lessThan": "3.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.301",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.246",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.195",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.113",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.54",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.301",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.246",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.195",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.157",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.113",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.54",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.4",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npid: Add a judgment for ns null in pid_nr_ns\n\n__task_pid_nr_ns\n        ns = task_active_pid_ns(current);\n        pid_nr_ns(rcu_dereference(*task_pid_ptr(task, type)), ns);\n                if (pid \u0026\u0026 ns-\u003elevel \u003c= pid-\u003elevel) {\n\nSometimes null is returned for task_active_pid_ns. Then it will trigger kernel panic in pid_nr_ns.\n\nFor example:\n\tUnable to handle kernel NULL pointer dereference at virtual address 0000000000000058\n\tMem abort info:\n\tESR = 0x0000000096000007\n\tEC = 0x25: DABT (current EL), IL = 32 bits\n\tSET = 0, FnV = 0\n\tEA = 0, S1PTW = 0\n\tFSC = 0x07: level 3 translation fault\n\tData abort info:\n\tISV = 0, ISS = 0x00000007, ISS2 = 0x00000000\n\tCM = 0, WnR = 0, TnD = 0, TagAccess = 0\n\tGCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\n\tuser pgtable: 4k pages, 39-bit VAs, pgdp=00000002175aa000\n\t[0000000000000058] pgd=08000002175ab003, p4d=08000002175ab003, pud=08000002175ab003, pmd=08000002175be003, pte=0000000000000000\n\tpstate: 834000c5 (Nzcv daIF +PAN -UAO +TCO +DIT -SSBS BTYPE=--)\n\tpc : __task_pid_nr_ns+0x74/0xd0\n\tlr : __task_pid_nr_ns+0x24/0xd0\n\tsp : ffffffc08001bd10\n\tx29: ffffffc08001bd10 x28: ffffffd4422b2000 x27: 0000000000000001\n\tx26: ffffffd442821168 x25: ffffffd442821000 x24: 00000f89492eab31\n\tx23: 00000000000000c0 x22: ffffff806f5693c0 x21: ffffff806f5693c0\n\tx20: 0000000000000001 x19: 0000000000000000 x18: 0000000000000000\n\tx17: 00000000529c6ef0 x16: 00000000529c6ef0 x15: 00000000023a1adc\n\tx14: 0000000000000003 x13: 00000000007ef6d8 x12: 001167c391c78800\n\tx11: 00ffffffffffffff x10: 0000000000000000 x9 : 0000000000000001\n\tx8 : ffffff80816fa3c0 x7 : 0000000000000000 x6 : 49534d702d535449\n\tx5 : ffffffc080c4c2c0 x4 : ffffffd43ee128c8 x3 : ffffffd43ee124dc\n\tx2 : 0000000000000000 x1 : 0000000000000001 x0 : ffffff806f5693c0\n\tCall trace:\n\t__task_pid_nr_ns+0x74/0xd0\n\t...\n\t__handle_irq_event_percpu+0xd4/0x284\n\thandle_irq_event+0x48/0xb0\n\thandle_fasteoi_irq+0x160/0x2d8\n\tgeneric_handle_domain_irq+0x44/0x60\n\tgic_handle_irq+0x4c/0x114\n\tcall_on_irq_stack+0x3c/0x74\n\tdo_interrupt_handler+0x4c/0x84\n\tel1_interrupt+0x34/0x58\n\tel1h_64_irq_handler+0x18/0x24\n\tel1h_64_irq+0x68/0x6c\n\taccount_kernel_stack+0x60/0x144\n\texit_task_stack_account+0x1c/0x80\n\tdo_exit+0x7e4/0xaf8\n\t...\n\tget_signal+0x7bc/0x8d8\n\tdo_notify_resume+0x128/0x828\n\tel0_svc+0x6c/0x70\n\tel0t_64_sync_handler+0x68/0xbc\n\tel0t_64_sync+0x1a8/0x1ac\n\tCode: 35fffe54 911a02a8 f9400108 b4000128 (b9405a69)\n\t---[ end trace 0000000000000000 ]---\n\tKernel panic - not syncing: Oops: Fatal exception in interrupt"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:44:16.295Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/75dbc029c5359438be4a6f908bfbfdab969af776"
        },
        {
          "url": "https://git.kernel.org/stable/c/c2d09d724856b6f82ab688f65fc1ce833bb56333"
        },
        {
          "url": "https://git.kernel.org/stable/c/c3b654021931dc806ba086c549e8756c3f204a67"
        },
        {
          "url": "https://git.kernel.org/stable/c/e10c36a771c5cc910abd9fe4aa9033ee32a47c38"
        },
        {
          "url": "https://git.kernel.org/stable/c/09d227c59d97efda7d5cc878a4335a6b2bb224c2"
        },
        {
          "url": "https://git.kernel.org/stable/c/2076b916bf41be48799d1443df0f8fc75d12ccd0"
        },
        {
          "url": "https://git.kernel.org/stable/c/a0212978af1825b37da0b453b94d9b0e5af11478"
        },
        {
          "url": "https://git.kernel.org/stable/c/006568ab4c5ca2309ceb36fa553e390b4aa9c0c7"
        }
      ],
      "title": "pid: Add a judgment for ns null in pid_nr_ns",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40178",
    "datePublished": "2025-11-12T21:56:24.051Z",
    "dateReserved": "2025-04-16T07:20:57.177Z",
    "dateUpdated": "2026-05-11T21:44:16.295Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-40178",
      "date": "2026-09-17",
      "epss": "0.0021",
      "percentile": "0.11418"
    },
    "microsoft_vex": {
      "current_release_date": "2025-12-07T01:51:49.000Z",
      "cve": "CVE-2025-40178",
      "id": "msrc_CVE-2025-40178",
      "initial_release_date": "2025-11-02T00:00:00.000Z",
      "product_status:fixed": "1",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "pid: Add a judgment for ns null in pid_nr_ns",
      "url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-40178.json",
      "version": "2"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-40178\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-11-12T22:15:44.480\",\"lastModified\":\"2026-06-17T09:21:24.603\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\npid: Add a judgment for ns null in pid_nr_ns\\n\\n__task_pid_nr_ns\\n        ns = task_active_pid_ns(current);\\n        pid_nr_ns(rcu_dereference(*task_pid_ptr(task, type)), ns);\\n                if (pid \u0026\u0026 ns-\u003elevel \u003c= pid-\u003elevel) {\\n\\nSometimes null is returned for task_active_pid_ns. Then it will trigger kernel panic in pid_nr_ns.\\n\\nFor example:\\n\\tUnable to handle kernel NULL pointer dereference at virtual address 0000000000000058\\n\\tMem abort info:\\n\\tESR = 0x0000000096000007\\n\\tEC = 0x25: DABT (current EL), IL = 32 bits\\n\\tSET = 0, FnV = 0\\n\\tEA = 0, S1PTW = 0\\n\\tFSC = 0x07: level 3 translation fault\\n\\tData abort info:\\n\\tISV = 0, ISS = 0x00000007, ISS2 = 0x00000000\\n\\tCM = 0, WnR = 0, TnD = 0, TagAccess = 0\\n\\tGCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0\\n\\tuser pgtable: 4k pages, 39-bit VAs, pgdp=00000002175aa000\\n\\t[0000000000000058] pgd=08000002175ab003, p4d=08000002175ab003, pud=08000002175ab003, pmd=08000002175be003, pte=0000000000000000\\n\\tpstate: 834000c5 (Nzcv daIF +PAN -UAO +TCO +DIT -SSBS BTYPE=--)\\n\\tpc : __task_pid_nr_ns+0x74/0xd0\\n\\tlr : __task_pid_nr_ns+0x24/0xd0\\n\\tsp : ffffffc08001bd10\\n\\tx29: ffffffc08001bd10 x28: ffffffd4422b2000 x27: 0000000000000001\\n\\tx26: ffffffd442821168 x25: ffffffd442821000 x24: 00000f89492eab31\\n\\tx23: 00000000000000c0 x22: ffffff806f5693c0 x21: ffffff806f5693c0\\n\\tx20: 0000000000000001 x19: 0000000000000000 x18: 0000000000000000\\n\\tx17: 00000000529c6ef0 x16: 00000000529c6ef0 x15: 00000000023a1adc\\n\\tx14: 0000000000000003 x13: 00000000007ef6d8 x12: 001167c391c78800\\n\\tx11: 00ffffffffffffff x10: 0000000000000000 x9 : 0000000000000001\\n\\tx8 : ffffff80816fa3c0 x7 : 0000000000000000 x6 : 49534d702d535449\\n\\tx5 : ffffffc080c4c2c0 x4 : ffffffd43ee128c8 x3 : ffffffd43ee124dc\\n\\tx2 : 0000000000000000 x1 : 0000000000000001 x0 : ffffff806f5693c0\\n\\tCall trace:\\n\\t__task_pid_nr_ns+0x74/0xd0\\n\\t...\\n\\t__handle_irq_event_percpu+0xd4/0x284\\n\\thandle_irq_event+0x48/0xb0\\n\\thandle_fasteoi_irq+0x160/0x2d8\\n\\tgeneric_handle_domain_irq+0x44/0x60\\n\\tgic_handle_irq+0x4c/0x114\\n\\tcall_on_irq_stack+0x3c/0x74\\n\\tdo_interrupt_handler+0x4c/0x84\\n\\tel1_interrupt+0x34/0x58\\n\\tel1h_64_irq_handler+0x18/0x24\\n\\tel1h_64_irq+0x68/0x6c\\n\\taccount_kernel_stack+0x60/0x144\\n\\texit_task_stack_account+0x1c/0x80\\n\\tdo_exit+0x7e4/0xaf8\\n\\t...\\n\\tget_signal+0x7bc/0x8d8\\n\\tdo_notify_resume+0x128/0x828\\n\\tel0_svc+0x6c/0x70\\n\\tel0t_64_sync_handler+0x68/0xbc\\n\\tel0t_64_sync+0x1a8/0x1ac\\n\\tCode: 35fffe54 911a02a8 f9400108 b4000128 (b9405a69)\\n\\t---[ end trace 0000000000000000 ]---\\n\\tKernel panic - not syncing: Oops: Fatal exception in interrupt\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"kernel/pid.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"17cf22c33e1f1b5e435469c84e43872579497653\",\"lessThan\":\"75dbc029c5359438be4a6f908bfbfdab969af776\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"17cf22c33e1f1b5e435469c84e43872579497653\",\"lessThan\":\"c2d09d724856b6f82ab688f65fc1ce833bb56333\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"17cf22c33e1f1b5e435469c84e43872579497653\",\"lessThan\":\"c3b654021931dc806ba086c549e8756c3f204a67\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"17cf22c33e1f1b5e435469c84e43872579497653\",\"lessThan\":\"e10c36a771c5cc910abd9fe4aa9033ee32a47c38\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"17cf22c33e1f1b5e435469c84e43872579497653\",\"lessThan\":\"09d227c59d97efda7d5cc878a4335a6b2bb224c2\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"17cf22c33e1f1b5e435469c84e43872579497653\",\"lessThan\":\"2076b916bf41be48799d1443df0f8fc75d12ccd0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"17cf22c33e1f1b5e435469c84e43872579497653\",\"lessThan\":\"a0212978af1825b37da0b453b94d9b0e5af11478\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"17cf22c33e1f1b5e435469c84e43872579497653\",\"lessThan\":\"006568ab4c5ca2309ceb36fa553e390b4aa9c0c7\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"kernel/pid.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3.8\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"3.8\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.301\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.246\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.195\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.157\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.113\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.54\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.17.4\",\"lessThanOrEqual\":\"6.17.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/006568ab4c5ca2309ceb36fa553e390b4aa9c0c7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/09d227c59d97efda7d5cc878a4335a6b2bb224c2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2076b916bf41be48799d1443df0f8fc75d12ccd0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/75dbc029c5359438be4a6f908bfbfdab969af776\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a0212978af1825b37da0b453b94d9b0e5af11478\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c2d09d724856b6f82ab688f65fc1ce833bb56333\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c3b654021931dc806ba086c549e8756c3f204a67\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e10c36a771c5cc910abd9fe4aa9033ee32a47c38\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-30T10:34:24+00:00",
      "cve": "CVE-2025-40178",
      "id": "CVE-2025-40178",
      "initial_release_date": "2025-11-12T00:00:00+00:00",
      "product_status:known_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: pid: Add a judgment for ns null in pid_nr_ns",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-40178.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.