CVE-2025-40178pid: Add a judgment for ns null in pid_nr_ns
- —Not scoredno CVSS score yet
- 0.22%Exploitation in 30 daysEPSS · top 87% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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
Timeline
ID reserved
By Linux
- 7 months later
· 7 months later
Published
- 6 months later
· 6 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Deferred.
- EPSS (exploitation in 30 days)
- 0.22% · top 87% of all CVEs (13 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 17cf22c33e1f1b5e435469c84e43872579497653 – < 75dbc029c5359438be4a6f908bfbfdab969af776
- affected 17cf22c33e1f1b5e435469c84e43872579497653 – < c2d09d724856b6f82ab688f65fc1ce833bb56333
- affected 17cf22c33e1f1b5e435469c84e43872579497653 – < c3b654021931dc806ba086c549e8756c3f204a67
- affected 17cf22c33e1f1b5e435469c84e43872579497653 – < e10c36a771c5cc910abd9fe4aa9033ee32a47c38
- affected 17cf22c33e1f1b5e435469c84e43872579497653 – < 09d227c59d97efda7d5cc878a4335a6b2bb224c2
- affected 17cf22c33e1f1b5e435469c84e43872579497653 – < 2076b916bf41be48799d1443df0f8fc75d12ccd0
- affected 17cf22c33e1f1b5e435469c84e43872579497653 – < a0212978af1825b37da0b453b94d9b0e5af11478
- affected 17cf22c33e1f1b5e435469c84e43872579497653 – < 006568ab4c5ca2309ceb36fa553e390b4aa9c0c7
- affected 3.8
- unaffected < 3.8
- unaffected 5.4.301 – ≤ 5.4.*
- unaffected 5.10.246 – ≤ 5.10.*
- unaffected 5.15.195 – ≤ 5.15.*
- unaffected 6.1.157 – ≤ 6.1.*
- unaffected 6.6.113 – ≤ 6.6.*
- unaffected 6.12.54 – ≤ 6.12.*
- unaffected 6.17.4 – ≤ 6.17.*
- unaffected 6.18 – ≤ *
References
References8
- https://git.kernel.org/stable/c/75dbc029c5359438be4a6f908bfbfdab969af776 (opens in a new tab)
- https://git.kernel.org/stable/c/c2d09d724856b6f82ab688f65fc1ce833bb56333 (opens in a new tab)
- https://git.kernel.org/stable/c/c3b654021931dc806ba086c549e8756c3f204a67 (opens in a new tab)
- https://git.kernel.org/stable/c/e10c36a771c5cc910abd9fe4aa9033ee32a47c38 (opens in a new tab)
- https://git.kernel.org/stable/c/09d227c59d97efda7d5cc878a4335a6b2bb224c2 (opens in a new tab)
- https://git.kernel.org/stable/c/2076b916bf41be48799d1443df0f8fc75d12ccd0 (opens in a new tab)
- https://git.kernel.org/stable/c/a0212978af1825b37da0b453b94d9b0e5af11478 (opens in a new tab)
- https://git.kernel.org/stable/c/006568ab4c5ca2309ceb36fa553e390b4aa9c0c7 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-150396 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-40178)Record last updated .