CVE-2025-21953 (GCVE-0-2025-21953)

Vulnerability from cvelistv5 – Published: 2025-04-01 15:46 – Updated: 2026-05-11 21:09
VLAI
Title
net: mana: cleanup mana struct after debugfs_remove()
Summary
In the Linux kernel, the following vulnerability has been resolved: net: mana: cleanup mana struct after debugfs_remove() When on a MANA VM hibernation is triggered, as part of hibernate_snapshot(), mana_gd_suspend() and mana_gd_resume() are called. If during this mana_gd_resume(), a failure occurs with HWC creation, mana_port_debugfs pointer does not get reinitialized and ends up pointing to older, cleaned-up dentry. Further in the hibernation path, as part of power_down(), mana_gd_shutdown() is triggered. This call, unaware of the failures in resume, tries to cleanup the already cleaned up mana_port_debugfs value and hits the following bug: [ 191.359296] mana 7870:00:00.0: Shutdown was called [ 191.359918] BUG: kernel NULL pointer dereference, address: 0000000000000098 [ 191.360584] #PF: supervisor write access in kernel mode [ 191.361125] #PF: error_code(0x0002) - not-present page [ 191.361727] PGD 1080ea067 P4D 0 [ 191.362172] Oops: Oops: 0002 [#1] SMP NOPTI [ 191.362606] CPU: 11 UID: 0 PID: 1674 Comm: bash Not tainted 6.14.0-rc5+ #2 [ 191.363292] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 11/21/2024 [ 191.364124] RIP: 0010:down_write+0x19/0x50 [ 191.364537] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 44 00 00 55 48 89 e5 53 48 89 fb e8 de cd ff ff 31 c0 ba 01 00 00 00 <f0> 48 0f b1 13 75 16 65 48 8b 05 88 24 4c 6a 48 89 43 08 48 8b 5d [ 191.365867] RSP: 0000:ff45fbe0c1c037b8 EFLAGS: 00010246 [ 191.366350] RAX: 0000000000000000 RBX: 0000000000000098 RCX: ffffff8100000000 [ 191.366951] RDX: 0000000000000001 RSI: 0000000000000064 RDI: 0000000000000098 [ 191.367600] RBP: ff45fbe0c1c037c0 R08: 0000000000000000 R09: 0000000000000001 [ 191.368225] R10: ff45fbe0d2b01000 R11: 0000000000000008 R12: 0000000000000000 [ 191.368874] R13: 000000000000000b R14: ff43dc27509d67c0 R15: 0000000000000020 [ 191.369549] FS: 00007dbc5001e740(0000) GS:ff43dc663f380000(0000) knlGS:0000000000000000 [ 191.370213] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 191.370830] CR2: 0000000000000098 CR3: 0000000168e8e002 CR4: 0000000000b73ef0 [ 191.371557] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 191.372192] DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400 [ 191.372906] Call Trace: [ 191.373262] <TASK> [ 191.373621] ? show_regs+0x64/0x70 [ 191.374040] ? __die+0x24/0x70 [ 191.374468] ? page_fault_oops+0x290/0x5b0 [ 191.374875] ? do_user_addr_fault+0x448/0x800 [ 191.375357] ? exc_page_fault+0x7a/0x160 [ 191.375971] ? asm_exc_page_fault+0x27/0x30 [ 191.376416] ? down_write+0x19/0x50 [ 191.376832] ? down_write+0x12/0x50 [ 191.377232] simple_recursive_removal+0x4a/0x2a0 [ 191.377679] ? __pfx_remove_one+0x10/0x10 [ 191.378088] debugfs_remove+0x44/0x70 [ 191.378530] mana_detach+0x17c/0x4f0 [ 191.378950] ? __flush_work+0x1e2/0x3b0 [ 191.379362] ? __cond_resched+0x1a/0x50 [ 191.379787] mana_remove+0xf2/0x1a0 [ 191.380193] mana_gd_shutdown+0x3b/0x70 [ 191.380642] pci_device_shutdown+0x3a/0x80 [ 191.381063] device_shutdown+0x13e/0x230 [ 191.381480] kernel_power_off+0x35/0x80 [ 191.381890] hibernate+0x3c6/0x470 [ 191.382312] state_store+0xcb/0xd0 [ 191.382734] kobj_attr_store+0x12/0x30 [ 191.383211] sysfs_kf_write+0x3e/0x50 [ 191.383640] kernfs_fop_write_iter+0x140/0x1d0 [ 191.384106] vfs_write+0x271/0x440 [ 191.384521] ksys_write+0x72/0xf0 [ 191.384924] __x64_sys_write+0x19/0x20 [ 191.385313] x64_sys_call+0x2b0/0x20b0 [ 191.385736] do_syscall_64+0x79/0x150 [ 191.386146] ? __mod_memcg_lruvec_state+0xe7/0x240 [ 191.386676] ? __lruvec_stat_mod_folio+0x79/0xb0 [ 191.387124] ? __pfx_lru_add+0x10/0x10 [ 191.387515] ? queued_spin_unlock+0x9/0x10 [ 191.387937] ? do_anonymous_page+0x33c/0xa00 [ 191.388374] ? __handle_mm_fault+0xcf3/0x1210 [ 191.388805] ? __count_memcg_events+0xbe/0x180 [ 191.389235] ? handle_mm_fault+0xae/0x300 [ 19 ---truncated---
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 17:16 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6667 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 6607c17c6c5e029da03a90085db22daf518232bf , < a1466112fb6e819261272ad75e7db750a43b78bf (git)
Affected: 6607c17c6c5e029da03a90085db22daf518232bf , < 3e64bb2ae7d9f2b3a8259d4d6b86ed1984d5460a (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.13
Unaffected: 0 , < 6.13 (semver)
Unaffected: 6.13.8 , ≤ 6.13.* (semver)
Unaffected: 6.14 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mana: cleanup mana struct after debugfs_remove()\n\nWhen on a MANA VM hibernation is triggered, as part of hibernate_snapshot(),\nmana_gd_suspend() and mana_gd_resume() are called. If during this\nmana_gd_resume(), a failure occurs with HWC creation, mana_port_debugfs\npointer does not get reinitialized and ends up pointing to older,\ncleaned-up dentry.\nFurther in the hibernation path, as part of power_down(), mana_gd_shutdown()\nis triggered. This call, unaware of the failures in resume, tries to cleanup\nthe already cleaned up  mana_port_debugfs value and hits the following bug:\n\n[  191.359296] mana 7870:00:00.0: Shutdown was called\n[  191.359918] BUG: kernel NULL pointer dereference, address: 0000000000000098\n[  191.360584] #PF: supervisor write access in kernel mode\n[  191.361125] #PF: error_code(0x0002) - not-present page\n[  191.361727] PGD 1080ea067 P4D 0\n[  191.362172] Oops: Oops: 0002 [#1] SMP NOPTI\n[  191.362606] CPU: 11 UID: 0 PID: 1674 Comm: bash Not tainted 6.14.0-rc5+ #2\n[  191.363292] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 11/21/2024\n[  191.364124] RIP: 0010:down_write+0x19/0x50\n[  191.364537] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 44 00 00 55 48 89 e5 53 48 89 fb e8 de cd ff ff 31 c0 ba 01 00 00 00 \u003cf0\u003e 48 0f b1 13 75 16 65 48 8b 05 88 24 4c 6a 48 89 43 08 48 8b 5d\n[  191.365867] RSP: 0000:ff45fbe0c1c037b8 EFLAGS: 00010246\n[  191.366350] RAX: 0000000000000000 RBX: 0000000000000098 RCX: ffffff8100000000\n[  191.366951] RDX: 0000000000000001 RSI: 0000000000000064 RDI: 0000000000000098\n[  191.367600] RBP: ff45fbe0c1c037c0 R08: 0000000000000000 R09: 0000000000000001\n[  191.368225] R10: ff45fbe0d2b01000 R11: 0000000000000008 R12: 0000000000000000\n[  191.368874] R13: 000000000000000b R14: ff43dc27509d67c0 R15: 0000000000000020\n[  191.369549] FS:  00007dbc5001e740(0000) GS:ff43dc663f380000(0000) knlGS:0000000000000000\n[  191.370213] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[  191.370830] CR2: 0000000000000098 CR3: 0000000168e8e002 CR4: 0000000000b73ef0\n[  191.371557] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[  191.372192] DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400\n[  191.372906] Call Trace:\n[  191.373262]  \u003cTASK\u003e\n[  191.373621]  ? show_regs+0x64/0x70\n[  191.374040]  ? __die+0x24/0x70\n[  191.374468]  ? page_fault_oops+0x290/0x5b0\n[  191.374875]  ? do_user_addr_fault+0x448/0x800\n[  191.375357]  ? exc_page_fault+0x7a/0x160\n[  191.375971]  ? asm_exc_page_fault+0x27/0x30\n[  191.376416]  ? down_write+0x19/0x50\n[  191.376832]  ? down_write+0x12/0x50\n[  191.377232]  simple_recursive_removal+0x4a/0x2a0\n[  191.377679]  ? __pfx_remove_one+0x10/0x10\n[  191.378088]  debugfs_remove+0x44/0x70\n[  191.378530]  mana_detach+0x17c/0x4f0\n[  191.378950]  ? __flush_work+0x1e2/0x3b0\n[  191.379362]  ? __cond_resched+0x1a/0x50\n[  191.379787]  mana_remove+0xf2/0x1a0\n[  191.380193]  mana_gd_shutdown+0x3b/0x70\n[  191.380642]  pci_device_shutdown+0x3a/0x80\n[  191.381063]  device_shutdown+0x13e/0x230\n[  191.381480]  kernel_power_off+0x35/0x80\n[  191.381890]  hibernate+0x3c6/0x470\n[  191.382312]  state_store+0xcb/0xd0\n[  191.382734]  kobj_attr_store+0x12/0x30\n[  191.383211]  sysfs_kf_write+0x3e/0x50\n[  191.383640]  kernfs_fop_write_iter+0x140/0x1d0\n[  191.384106]  vfs_write+0x271/0x440\n[  191.384521]  ksys_write+0x72/0xf0\n[  191.384924]  __x64_sys_write+0x19/0x20\n[  191.385313]  x64_sys_call+0x2b0/0x20b0\n[  191.385736]  do_syscall_64+0x79/0x150\n[  191.386146]  ? __mod_memcg_lruvec_state+0xe7/0x240\n[  191.386676]  ? __lruvec_stat_mod_folio+0x79/0xb0\n[  191.387124]  ? __pfx_lru_add+0x10/0x10\n[  191.387515]  ? queued_spin_unlock+0x9/0x10\n[  191.387937]  ? do_anonymous_page+0x33c/0xa00\n[  191.388374]  ? __handle_mm_fault+0xcf3/0x1210\n[  191.388805]  ? __count_memcg_events+0xbe/0x180\n[  191.389235]  ? handle_mm_fault+0xae/0x300\n[  19\n---truncated---"
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          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mana: cleanup mana struct after debugfs_remove()\n\nWhen on a MANA VM hibernation is triggered, as part of hibernate_snapshot(),\nmana_gd_suspend() and mana_gd_resume() are called. If during this\nmana_gd_resume(), a failure occurs with HWC creation, mana_port_debugfs\npointer does not get reinitialized and ends up pointing to older,\ncleaned-up dentry.\nFurther in the hibernation path, as part of power_down(), mana_gd_shutdown()\nis triggered. This call, unaware of the failures in resume, tries to cleanup\nthe already cleaned up  mana_port_debugfs value and hits the following bug:\n\n[  191.359296] mana 7870:00:00.0: Shutdown was called\n[  191.359918] BUG: kernel NULL pointer dereference, address: 0000000000000098\n[  191.360584] #PF: supervisor write access in kernel mode\n[  191.361125] #PF: error_code(0x0002) - not-present page\n[  191.361727] PGD 1080ea067 P4D 0\n[  191.362172] Oops: Oops: 0002 [#1] SMP NOPTI\n[  191.362606] CPU: 11 UID: 0 PID: 1674 Comm: bash Not tainted 6.14.0-rc5+ #2\n[  191.363292] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 11/21/2024\n[  191.364124] RIP: 0010:down_write+0x19/0x50\n[  191.364537] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 44 00 00 55 48 89 e5 53 48 89 fb e8 de cd ff ff 31 c0 ba 01 00 00 00 \u003cf0\u003e 48 0f b1 13 75 16 65 48 8b 05 88 24 4c 6a 48 89 43 08 48 8b 5d\n[  191.365867] RSP: 0000:ff45fbe0c1c037b8 EFLAGS: 00010246\n[  191.366350] RAX: 0000000000000000 RBX: 0000000000000098 RCX: ffffff8100000000\n[  191.366951] RDX: 0000000000000001 RSI: 0000000000000064 RDI: 0000000000000098\n[  191.367600] RBP: ff45fbe0c1c037c0 R08: 0000000000000000 R09: 0000000000000001\n[  191.368225] R10: ff45fbe0d2b01000 R11: 0000000000000008 R12: 0000000000000000\n[  191.368874] R13: 000000000000000b R14: ff43dc27509d67c0 R15: 0000000000000020\n[  191.369549] FS:  00007dbc5001e740(0000) GS:ff43dc663f380000(0000) knlGS:0000000000000000\n[  191.370213] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[  191.370830] CR2: 0000000000000098 CR3: 0000000168e8e002 CR4: 0000000000b73ef0\n[  191.371557] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[  191.372192] DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400\n[  191.372906] Call Trace:\n[  191.373262]  \u003cTASK\u003e\n[  191.373621]  ? show_regs+0x64/0x70\n[  191.374040]  ? __die+0x24/0x70\n[  191.374468]  ? page_fault_oops+0x290/0x5b0\n[  191.374875]  ? do_user_addr_fault+0x448/0x800\n[  191.375357]  ? exc_page_fault+0x7a/0x160\n[  191.375971]  ? asm_exc_page_fault+0x27/0x30\n[  191.376416]  ? down_write+0x19/0x50\n[  191.376832]  ? down_write+0x12/0x50\n[  191.377232]  simple_recursive_removal+0x4a/0x2a0\n[  191.377679]  ? __pfx_remove_one+0x10/0x10\n[  191.378088]  debugfs_remove+0x44/0x70\n[  191.378530]  mana_detach+0x17c/0x4f0\n[  191.378950]  ? __flush_work+0x1e2/0x3b0\n[  191.379362]  ? __cond_resched+0x1a/0x50\n[  191.379787]  mana_remove+0xf2/0x1a0\n[  191.380193]  mana_gd_shutdown+0x3b/0x70\n[  191.380642]  pci_device_shutdown+0x3a/0x80\n[  191.381063]  device_shutdown+0x13e/0x230\n[  191.381480]  kernel_power_off+0x35/0x80\n[  191.381890]  hibernate+0x3c6/0x470\n[  191.382312]  state_store+0xcb/0xd0\n[  191.382734]  kobj_attr_store+0x12/0x30\n[  191.383211]  sysfs_kf_write+0x3e/0x50\n[  191.383640]  kernfs_fop_write_iter+0x140/0x1d0\n[  191.384106]  vfs_write+0x271/0x440\n[  191.384521]  ksys_write+0x72/0xf0\n[  191.384924]  __x64_sys_write+0x19/0x20\n[  191.385313]  x64_sys_call+0x2b0/0x20b0\n[  191.385736]  do_syscall_64+0x79/0x150\n[  191.386146]  ? __mod_memcg_lruvec_state+0xe7/0x240\n[  191.386676]  ? __lruvec_stat_mod_folio+0x79/0xb0\n[  191.387124]  ? __pfx_lru_add+0x10/0x10\n[  191.387515]  ? queued_spin_unlock+0x9/0x10\n[  191.387937]  ? do_anonymous_page+0x33c/0xa00\n[  191.388374]  ? __handle_mm_fault+0xcf3/0x1210\n[  191.388805]  ? __count_memcg_events+0xbe/0x180\n[  191.389235]  ? handle_mm_fault+0xae/0x300\n[  19\n---truncated---"
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: mana: cleanup struct mana despu\u00e9s de debugfs_remove(). Cuando se activa la hibernaci\u00f3n en una m\u00e1quina virtual MANA, como parte de hibernate_snapshot(), se invocan mana_gd_suspend() y mana_gd_resume(). Si durante este mana_gd_resume() se produce un fallo en la creaci\u00f3n de HWC, el puntero mana_port_debugfs no se reinicializa y termina apuntando a una dentry anterior y limpiada. M\u00e1s adelante en la ruta de hibernaci\u00f3n, como parte de power_down(), se activa mana_gd_shutdown(). Esta llamada, sin tener conocimiento de los fallos en la reanudaci\u00f3n, intenta limpiar el valor mana_port_debugfs ya limpiado y se encuentra con el siguiente error: [ 191.359296] mana 7870:00:00.0: Se llam\u00f3 al apagado [ 191.359918] ERROR: desreferencia de puntero NULL del kernel, direcci\u00f3n: 0000000000000098 [ 191.360584] #PF: acceso de escritura del supervisor en modo kernel [ 191.361125] #PF: error_code(0x0002) - p\u00e1gina no presente [ 191.361727] PGD 1080ea067 P4D 0 [ 191.362172] Oops: Oops: 0002 [#1] SMP NOPTI [ 191.362606] CPU: 11 UID: 0 PID: 1674 Comm: bash No contaminado 6.14.0-rc5+ #2 [ 191.363292] Nombre del hardware: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 21/11/2024 [ 191.364124] RIP: 0010:down_write+0x19/0x50 [ 191.364537] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 44 00 00 55 48 89 e5 53 48 89 fb e8 de cd ff ff 31 c0 ba 01 00 00 00  48 0f b1 13 75 16 65 48 8b 05 88 24 4c 6a 48 89 43 08 48 8b 5d [ 191.365867] RSP: 0000:ff45fbe0c1c037b8 EFLAGS: 00010246 [ 191.366350] RAX: 0000000000000000 RBX: 0000000000000098 RCX: ffffff8100000000 [ 191.366951] RDX: 0000000000000001 RSI: 0000000000000064 RDI: 0000000000000098 [ 191.367600] RBP: ff45fbe0c1c037c0 R08: 0000000000000000 R09: 0000000000000001 [ 191.368225] R10: ff45fbe0d2b01000 R11: 0000000000000008 R12: 0000000000000000 [ 191.368874] R13: 000000000000000b R14: ff43dc27509d67c0 R15: 0000000000000020 [ 191.369549] FS: 00007dbc5001e740(0000) GS:ff43dc663f380000(0000) knlGS:0000000000000000 [ 191.370213] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 191.370830] CR2: 0000000000000098 CR3: 0000000168e8e002 CR4: 0000000000b73ef0 [ 191.371557] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 191.372192] DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400 [ 191.372906] Call Trace: [ 191.373262]  [ 191.373621] ? show_regs+0x64/0x70 [ 191.374040] ? __die+0x24/0x70 [ 191.374468] ? page_fault_oops+0x290/0x5b0 [ 191.374875] ? do_user_addr_fault+0x448/0x800 [ 191.375357] ? exc_page_fault+0x7a/0x160 [ 191.375971] ? asm_exc_page_fault+0x27/0x30 [ 191.376416] ? down_write+0x19/0x50 [ 191.376832] ? down_write+0x12/0x50 [ 191.377232] simple_recursive_removal+0x4a/0x2a0 [ 191.377679] ? __pfx_remove_one+0x10/0x10 [ 191.378088] debugfs_remove+0x44/0x70 [ 191.378530] mana_detach+0x17c/0x4f0 [ 191.378950] ? __flush_work+0x1e2/0x3b0 [ 191.379362] ? __cond_resched+0x1a/0x50 [ 191.379787] mana_remove+0xf2/0x1a0 [ 191.380193] mana_gd_shutdown+0x3b/0x70 [ 191.380642] pci_device_shutdown+0x3a/0x80 [ 191.381063] device_shutdown+0x13e/0x230 [ 191.381480] kernel_power_off+0x35/0x80 [ 191.381890] hibernate+0x3c6/0x470 [ 191.382312] state_store+0xcb/0xd0 [ 191.382734] kobj_attr_store+0x12/0x30 [ 191.383211] sysfs_kf_write+0x3e/0x50 [ 191.383640] kernfs_fop_write_iter+0x140/0x1d0 [ 191.384106] vfs_write+0x271/0x440 [ 191.384521] ksys_write+0x72/0xf0 [ 191.384924] __x64_sys_write+0x19/0x20 [ 191.385313] x64_sys_call+0x2b0/0x20b0 [ 191.385736] do_syscall_64+0x79/0x150 [ 191.386146] ? __mod_memcg_lruvec_state+0xe7/0x240 [ 191.386676] ? __lruvec_stat_mod_folio+0x79/0xb0 [ 191.387124] ? __pfx_lru_add+0x10/0x10 [ 191.387515] ? queued_spin_unlock+0x9/0x10 [ 191.387937] ? do_anonymous_page+0x33c/0xa00 [ 191.388374] ? __handle_mm_fault+0xcf3/0x1210 [ 191.388805] ? __count_memcg_events+0xbe/0x180 [ 191.389235] ? handle_mm_fault+0xae/0x300 [ 19 ---truncado---"
          }
        ],
        "id": "CVE-2025-21953",
        "lastModified": "2026-06-17T08:44:41.860",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "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"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "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"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2025-21953",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T17:16:37.291898Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2025-04-01T16:15:26.513",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/3e64bb2ae7d9f2b3a8259d4d6b86ed1984d5460a"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/a1466112fb6e819261272ad75e7db750a43b78bf"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-476"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-476"
              }
            ],
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-30T10:19:01+00:00",
      "cve": "CVE-2025-21953",
      "id": "CVE-2025-21953",
      "initial_release_date": "2025-04-01T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net: mana: cleanup mana struct after debugfs_remove()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-21953.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "cvssV3_1": {
                  "attackComplexity": "LOW",
                  "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"
                }
              },
              {
                "other": {
                  "content": {
                    "id": "CVE-2025-21953",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2025-10-01T17:16:37.291898Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-476",
                    "description": "CWE-476 NULL Pointer Dereference",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2025-10-01T14:38:21.772Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "drivers/net/ethernet/microsoft/mana/gdma_main.c",
                "drivers/net/ethernet/microsoft/mana/mana_en.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "a1466112fb6e819261272ad75e7db750a43b78bf",
                  "status": "affected",
                  "version": "6607c17c6c5e029da03a90085db22daf518232bf",
                  "versionType": "git"
                },
                {
                  "lessThan": "3e64bb2ae7d9f2b3a8259d4d6b86ed1984d5460a",
                  "status": "affected",
                  "version": "6607c17c6c5e029da03a90085db22daf518232bf",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "drivers/net/ethernet/microsoft/mana/gdma_main.c",
                "drivers/net/ethernet/microsoft/mana/mana_en.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "6.13"
                },
                {
                  "lessThan": "6.13",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.13.*",
                  "status": "unaffected",
                  "version": "6.13.8",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.14",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.13.8",
                      "versionStartIncluding": "6.13",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.14",
                      "versionStartIncluding": "6.13",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mana: cleanup mana struct after debugfs_remove()\n\nWhen on a MANA VM hibernation is triggered, as part of hibernate_snapshot(),\nmana_gd_suspend() and mana_gd_resume() are called. If during this\nmana_gd_resume(), a failure occurs with HWC creation, mana_port_debugfs\npointer does not get reinitialized and ends up pointing to older,\ncleaned-up dentry.\nFurther in the hibernation path, as part of power_down(), mana_gd_shutdown()\nis triggered. This call, unaware of the failures in resume, tries to cleanup\nthe already cleaned up  mana_port_debugfs value and hits the following bug:\n\n[  191.359296] mana 7870:00:00.0: Shutdown was called\n[  191.359918] BUG: kernel NULL pointer dereference, address: 0000000000000098\n[  191.360584] #PF: supervisor write access in kernel mode\n[  191.361125] #PF: error_code(0x0002) - not-present page\n[  191.361727] PGD 1080ea067 P4D 0\n[  191.362172] Oops: Oops: 0002 [#1] SMP NOPTI\n[  191.362606] CPU: 11 UID: 0 PID: 1674 Comm: bash Not tainted 6.14.0-rc5+ #2\n[  191.363292] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.1 11/21/2024\n[  191.364124] RIP: 0010:down_write+0x19/0x50\n[  191.364537] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 44 00 00 55 48 89 e5 53 48 89 fb e8 de cd ff ff 31 c0 ba 01 00 00 00 \u003cf0\u003e 48 0f b1 13 75 16 65 48 8b 05 88 24 4c 6a 48 89 43 08 48 8b 5d\n[  191.365867] RSP: 0000:ff45fbe0c1c037b8 EFLAGS: 00010246\n[  191.366350] RAX: 0000000000000000 RBX: 0000000000000098 RCX: ffffff8100000000\n[  191.366951] RDX: 0000000000000001 RSI: 0000000000000064 RDI: 0000000000000098\n[  191.367600] RBP: ff45fbe0c1c037c0 R08: 0000000000000000 R09: 0000000000000001\n[  191.368225] R10: ff45fbe0d2b01000 R11: 0000000000000008 R12: 0000000000000000\n[  191.368874] R13: 000000000000000b R14: ff43dc27509d67c0 R15: 0000000000000020\n[  191.369549] FS:  00007dbc5001e740(0000) GS:ff43dc663f380000(0000) knlGS:0000000000000000\n[  191.370213] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[  191.370830] CR2: 0000000000000098 CR3: 0000000168e8e002 CR4: 0000000000b73ef0\n[  191.371557] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[  191.372192] DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400\n[  191.372906] Call Trace:\n[  191.373262]  \u003cTASK\u003e\n[  191.373621]  ? show_regs+0x64/0x70\n[  191.374040]  ? __die+0x24/0x70\n[  191.374468]  ? page_fault_oops+0x290/0x5b0\n[  191.374875]  ? do_user_addr_fault+0x448/0x800\n[  191.375357]  ? exc_page_fault+0x7a/0x160\n[  191.375971]  ? asm_exc_page_fault+0x27/0x30\n[  191.376416]  ? down_write+0x19/0x50\n[  191.376832]  ? down_write+0x12/0x50\n[  191.377232]  simple_recursive_removal+0x4a/0x2a0\n[  191.377679]  ? __pfx_remove_one+0x10/0x10\n[  191.378088]  debugfs_remove+0x44/0x70\n[  191.378530]  mana_detach+0x17c/0x4f0\n[  191.378950]  ? __flush_work+0x1e2/0x3b0\n[  191.379362]  ? __cond_resched+0x1a/0x50\n[  191.379787]  mana_remove+0xf2/0x1a0\n[  191.380193]  mana_gd_shutdown+0x3b/0x70\n[  191.380642]  pci_device_shutdown+0x3a/0x80\n[  191.381063]  device_shutdown+0x13e/0x230\n[  191.381480]  kernel_power_off+0x35/0x80\n[  191.381890]  hibernate+0x3c6/0x470\n[  191.382312]  state_store+0xcb/0xd0\n[  191.382734]  kobj_attr_store+0x12/0x30\n[  191.383211]  sysfs_kf_write+0x3e/0x50\n[  191.383640]  kernfs_fop_write_iter+0x140/0x1d0\n[  191.384106]  vfs_write+0x271/0x440\n[  191.384521]  ksys_write+0x72/0xf0\n[  191.384924]  __x64_sys_write+0x19/0x20\n[  191.385313]  x64_sys_call+0x2b0/0x20b0\n[  191.385736]  do_syscall_64+0x79/0x150\n[  191.386146]  ? __mod_memcg_lruvec_state+0xe7/0x240\n[  191.386676]  ? __lruvec_stat_mod_folio+0x79/0xb0\n[  191.387124]  ? __pfx_lru_add+0x10/0x10\n[  191.387515]  ? queued_spin_unlock+0x9/0x10\n[  191.387937]  ? do_anonymous_page+0x33c/0xa00\n[  191.388374]  ? __handle_mm_fault+0xcf3/0x1210\n[  191.388805]  ? __count_memcg_events+0xbe/0x180\n[  191.389235]  ? handle_mm_fault+0xae/0x300\n[  19\n---truncated---"
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-05-11T21:09:44.295Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/a1466112fb6e819261272ad75e7db750a43b78bf"
            },
            {
              "url": "https://git.kernel.org/stable/c/3e64bb2ae7d9f2b3a8259d4d6b86ed1984d5460a"
            }
          ],
          "title": "net: mana: cleanup mana struct after debugfs_remove()",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2025-21953",
        "datePublished": "2025-04-01T15:46:54.712Z",
        "dateReserved": "2024-12-29T08:45:45.790Z",
        "dateUpdated": "2026-05-11T21:09:44.295Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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