Vulnerability-Lookup

FKIE_CVE-2025-40178

Vulnerability from fkie_nvd - Published: 2025-11-12 22:15 - Updated: 2026-10-19 21:10

Severity

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

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/006568ab4c5ca2309ceb36fa553e390b4aa9c0c7
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/09d227c59d97efda7d5cc878a4335a6b2bb224c2
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/2076b916bf41be48799d1443df0f8fc75d12ccd0
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/75dbc029c5359438be4a6f908bfbfdab969af776
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a0212978af1825b37da0b453b94d9b0e5af11478
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/c2d09d724856b6f82ab688f65fc1ce833bb56333
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/c3b654021931dc806ba086c549e8756c3f204a67
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e10c36a771c5cc910abd9fe4aa9033ee32a47c38

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/pid.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "75dbc029c5359438be4a6f908bfbfdab969af776",
              "status": "affected",
              "version": "17cf22c33e1f1b5e435469c84e43872579497653",
              "versionType": "git"
            },
            {
              "lessThan": "c2d09d724856b6f82ab688f65fc1ce833bb56333",
              "status": "affected",
              "version": "17cf22c33e1f1b5e435469c84e43872579497653",
              "versionType": "git"
            },
            {
              "lessThan": "c3b654021931dc806ba086c549e8756c3f204a67",
              "status": "affected",
              "version": "17cf22c33e1f1b5e435469c84e43872579497653",
              "versionType": "git"
            },
            {
              "lessThan": "e10c36a771c5cc910abd9fe4aa9033ee32a47c38",
              "status": "affected",
              "version": "17cf22c33e1f1b5e435469c84e43872579497653",
              "versionType": "git"
            },
            {
              "lessThan": "09d227c59d97efda7d5cc878a4335a6b2bb224c2",
              "status": "affected",
              "version": "17cf22c33e1f1b5e435469c84e43872579497653",
              "versionType": "git"
            },
            {
              "lessThan": "2076b916bf41be48799d1443df0f8fc75d12ccd0",
              "status": "affected",
              "version": "17cf22c33e1f1b5e435469c84e43872579497653",
              "versionType": "git"
            },
            {
              "lessThan": "a0212978af1825b37da0b453b94d9b0e5af11478",
              "status": "affected",
              "version": "17cf22c33e1f1b5e435469c84e43872579497653",
              "versionType": "git"
            },
            {
              "lessThan": "006568ab4c5ca2309ceb36fa553e390b4aa9c0c7",
              "status": "affected",
              "version": "17cf22c33e1f1b5e435469c84e43872579497653",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/pid.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "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"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "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"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\npid: A\u00f1adir un juicio para ns nulo en 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\nA veces se devuelve nulo para task_active_pid_ns. Entonces activar\u00e1 un kernel panic en pid_nr_ns.\n\nPor ejemplo:\n\tNo se puede manejar la desreferencia de puntero NULL del kernel en la direcci\u00f3n virtual 0000000000000058\n\tInformaci\u00f3n de aborto de memoria:\n\tESR = 0x0000000096000007\n\tEC = 0x25: DABT (EL actual), IL = 32 bits\n\tSET = 0, FnV = 0\n\tEA = 0, S1PTW = 0\n\tFSC = 0x07: fallo de traducci\u00f3n de nivel 3\n\tInformaci\u00f3n de aborto de datos:\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\ttabla de p\u00e1ginas de usuario: p\u00e1ginas de 4k, VAs de 39 bits, 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\tRastro de llamada:\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---[ fin del rastro 0000000000000000 ]---\n\tKernel panic - no sincronizando: Oops: Excepci\u00f3n fatal en interrupci\u00f3n"
    }
  ],
  "id": "CVE-2025-40178",
  "lastModified": "2026-10-19T21:10:00.160",
  "metrics": {},
  "published": "2025-11-12T22:15:44.480",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "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"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}

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

Vulnerability from cvelistv5 – Published: 2025-11-12 21:56 – Updated: 2026-05-11 21:44

Title

pid: Add a judgment for ns null in pid_nr_ns

Summary

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 7018 records in the last 180 days details

References

8 references

URL	Tags
https://git.kernel.org/stable/c/75dbc029c5359438b…
https://git.kernel.org/stable/c/c2d09d724856b6f82…
https://git.kernel.org/stable/c/c3b654021931dc806…
https://git.kernel.org/stable/c/e10c36a771c5cc910…
https://git.kernel.org/stable/c/09d227c59d97efda7…
https://git.kernel.org/stable/c/2076b916bf41be487…
https://git.kernel.org/stable/c/a0212978af1825b37…
https://git.kernel.org/stable/c/006568ab4c5ca2309…

Impacted products

2 products

Vendor	Product	Version
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)
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)

Show details on NVD website

JSON

To clipboard

{
  "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": [
            {
              "lessThan": "75dbc029c5359438be4a6f908bfbfdab969af776",
              "status": "affected",
              "version": "17cf22c33e1f1b5e435469c84e43872579497653",
              "versionType": "git"
            },
            {
              "lessThan": "c2d09d724856b6f82ab688f65fc1ce833bb56333",
              "status": "affected",
              "version": "17cf22c33e1f1b5e435469c84e43872579497653",
              "versionType": "git"
            },
            {
              "lessThan": "c3b654021931dc806ba086c549e8756c3f204a67",
              "status": "affected",
              "version": "17cf22c33e1f1b5e435469c84e43872579497653",
              "versionType": "git"
            },
            {
              "lessThan": "e10c36a771c5cc910abd9fe4aa9033ee32a47c38",
              "status": "affected",
              "version": "17cf22c33e1f1b5e435469c84e43872579497653",
              "versionType": "git"
            },
            {
              "lessThan": "09d227c59d97efda7d5cc878a4335a6b2bb224c2",
              "status": "affected",
              "version": "17cf22c33e1f1b5e435469c84e43872579497653",
              "versionType": "git"
            },
            {
              "lessThan": "2076b916bf41be48799d1443df0f8fc75d12ccd0",
              "status": "affected",
              "version": "17cf22c33e1f1b5e435469c84e43872579497653",
              "versionType": "git"
            },
            {
              "lessThan": "a0212978af1825b37da0b453b94d9b0e5af11478",
              "status": "affected",
              "version": "17cf22c33e1f1b5e435469c84e43872579497653",
              "versionType": "git"
            },
            {
              "lessThan": "006568ab4c5ca2309ceb36fa553e390b4aa9c0c7",
              "status": "affected",
              "version": "17cf22c33e1f1b5e435469c84e43872579497653",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/pid.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "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"
}

Sightings

Author	Source	Type	Date	Other

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.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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