ghsa-j97h-5fwv-4rhj
Vulnerability from github
Published
2025-04-01 18:30
Modified
2025-04-11 18:30
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

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 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 ---truncated---

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{
  "affected": [],
  "aliases": [
    "CVE-2025-21953"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-04-01T16:15:26Z",
    "severity": "MODERATE"
  },
  "details": "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---",
  "id": "GHSA-j97h-5fwv-4rhj",
  "modified": "2025-04-11T18:30:41Z",
  "published": "2025-04-01T18:30:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21953"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3e64bb2ae7d9f2b3a8259d4d6b86ed1984d5460a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a1466112fb6e819261272ad75e7db750a43b78bf"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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