CVE-2025-39883 (GCVE-0-2025-39883)
Vulnerability from cvelistv5
Published
2025-09-23 06:00
Modified
2025-11-03 17:44
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory When I did memory failure tests, below panic occurs: page dumped because: VM_BUG_ON_PAGE(PagePoisoned(page)) kernel BUG at include/linux/page-flags.h:616! Oops: invalid opcode: 0000 [#1] PREEMPT SMP NOPTI CPU: 3 PID: 720 Comm: bash Not tainted 6.10.0-rc1-00195-g148743902568 #40 RIP: 0010:unpoison_memory+0x2f3/0x590 RSP: 0018:ffffa57fc8787d60 EFLAGS: 00000246 RAX: 0000000000000037 RBX: 0000000000000009 RCX: ffff9be25fcdc9c8 RDX: 0000000000000000 RSI: 0000000000000027 RDI: ffff9be25fcdc9c0 RBP: 0000000000300000 R08: ffffffffb4956f88 R09: 0000000000009ffb R10: 0000000000000284 R11: ffffffffb4926fa0 R12: ffffe6b00c000000 R13: ffff9bdb453dfd00 R14: 0000000000000000 R15: fffffffffffffffe FS: 00007f08f04e4740(0000) GS:ffff9be25fcc0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000564787a30410 CR3: 000000010d4e2000 CR4: 00000000000006f0 Call Trace: <TASK> unpoison_memory+0x2f3/0x590 simple_attr_write_xsigned.constprop.0.isra.0+0xb3/0x110 debugfs_attr_write+0x42/0x60 full_proxy_write+0x5b/0x80 vfs_write+0xd5/0x540 ksys_write+0x64/0xe0 do_syscall_64+0xb9/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f08f0314887 RSP: 002b:00007ffece710078 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000009 RCX: 00007f08f0314887 RDX: 0000000000000009 RSI: 0000564787a30410 RDI: 0000000000000001 RBP: 0000564787a30410 R08: 000000000000fefe R09: 000000007fffffff R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000009 R13: 00007f08f041b780 R14: 00007f08f0417600 R15: 00007f08f0416a00 </TASK> Modules linked in: hwpoison_inject ---[ end trace 0000000000000000 ]--- RIP: 0010:unpoison_memory+0x2f3/0x590 RSP: 0018:ffffa57fc8787d60 EFLAGS: 00000246 RAX: 0000000000000037 RBX: 0000000000000009 RCX: ffff9be25fcdc9c8 RDX: 0000000000000000 RSI: 0000000000000027 RDI: ffff9be25fcdc9c0 RBP: 0000000000300000 R08: ffffffffb4956f88 R09: 0000000000009ffb R10: 0000000000000284 R11: ffffffffb4926fa0 R12: ffffe6b00c000000 R13: ffff9bdb453dfd00 R14: 0000000000000000 R15: fffffffffffffffe FS: 00007f08f04e4740(0000) GS:ffff9be25fcc0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000564787a30410 CR3: 000000010d4e2000 CR4: 00000000000006f0 Kernel panic - not syncing: Fatal exception Kernel Offset: 0x31c00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) ---[ end Kernel panic - not syncing: Fatal exception ]--- The root cause is that unpoison_memory() tries to check the PG_HWPoison flags of an uninitialized page. So VM_BUG_ON_PAGE(PagePoisoned(page)) is triggered. This can be reproduced by below steps: 1.Offline memory block: echo offline > /sys/devices/system/memory/memory12/state 2.Get offlined memory pfn: page-types -b n -rlN 3.Write pfn to unpoison-pfn echo <pfn> > /sys/kernel/debug/hwpoison/unpoison-pfn This scenario can be identified by pfn_to_online_page() returning NULL. And ZONE_DEVICE pages are never expected, so we can simply fail if pfn_to_online_page() == NULL to fix the bug.
References
Impacted products
Vendor Product Version
Linux Linux Version: f1dd2cd13c4bbbc9a7c4617b3b034fa643de98fe
Version: f1dd2cd13c4bbbc9a7c4617b3b034fa643de98fe
Version: f1dd2cd13c4bbbc9a7c4617b3b034fa643de98fe
Version: f1dd2cd13c4bbbc9a7c4617b3b034fa643de98fe
Version: f1dd2cd13c4bbbc9a7c4617b3b034fa643de98fe
Version: f1dd2cd13c4bbbc9a7c4617b3b034fa643de98fe
Version: f1dd2cd13c4bbbc9a7c4617b3b034fa643de98fe
Version: f1dd2cd13c4bbbc9a7c4617b3b034fa643de98fe
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory\n\nWhen I did memory failure tests, below panic occurs:\n\npage dumped because: VM_BUG_ON_PAGE(PagePoisoned(page))\nkernel BUG at include/linux/page-flags.h:616!\nOops: invalid opcode: 0000 [#1] PREEMPT SMP NOPTI\nCPU: 3 PID: 720 Comm: bash Not tainted 6.10.0-rc1-00195-g148743902568 #40\nRIP: 0010:unpoison_memory+0x2f3/0x590\nRSP: 0018:ffffa57fc8787d60 EFLAGS: 00000246\nRAX: 0000000000000037 RBX: 0000000000000009 RCX: ffff9be25fcdc9c8\nRDX: 0000000000000000 RSI: 0000000000000027 RDI: ffff9be25fcdc9c0\nRBP: 0000000000300000 R08: ffffffffb4956f88 R09: 0000000000009ffb\nR10: 0000000000000284 R11: ffffffffb4926fa0 R12: ffffe6b00c000000\nR13: ffff9bdb453dfd00 R14: 0000000000000000 R15: fffffffffffffffe\nFS:  00007f08f04e4740(0000) GS:ffff9be25fcc0000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000564787a30410 CR3: 000000010d4e2000 CR4: 00000000000006f0\nCall Trace:\n \u003cTASK\u003e\n unpoison_memory+0x2f3/0x590\n simple_attr_write_xsigned.constprop.0.isra.0+0xb3/0x110\n debugfs_attr_write+0x42/0x60\n full_proxy_write+0x5b/0x80\n vfs_write+0xd5/0x540\n ksys_write+0x64/0xe0\n do_syscall_64+0xb9/0x1d0\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7f08f0314887\nRSP: 002b:00007ffece710078 EFLAGS: 00000246 ORIG_RAX: 0000000000000001\nRAX: ffffffffffffffda RBX: 0000000000000009 RCX: 00007f08f0314887\nRDX: 0000000000000009 RSI: 0000564787a30410 RDI: 0000000000000001\nRBP: 0000564787a30410 R08: 000000000000fefe R09: 000000007fffffff\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000009\nR13: 00007f08f041b780 R14: 00007f08f0417600 R15: 00007f08f0416a00\n \u003c/TASK\u003e\nModules linked in: hwpoison_inject\n---[ end trace 0000000000000000 ]---\nRIP: 0010:unpoison_memory+0x2f3/0x590\nRSP: 0018:ffffa57fc8787d60 EFLAGS: 00000246\nRAX: 0000000000000037 RBX: 0000000000000009 RCX: ffff9be25fcdc9c8\nRDX: 0000000000000000 RSI: 0000000000000027 RDI: ffff9be25fcdc9c0\nRBP: 0000000000300000 R08: ffffffffb4956f88 R09: 0000000000009ffb\nR10: 0000000000000284 R11: ffffffffb4926fa0 R12: ffffe6b00c000000\nR13: ffff9bdb453dfd00 R14: 0000000000000000 R15: fffffffffffffffe\nFS:  00007f08f04e4740(0000) GS:ffff9be25fcc0000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000564787a30410 CR3: 000000010d4e2000 CR4: 00000000000006f0\nKernel panic - not syncing: Fatal exception\nKernel Offset: 0x31c00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)\n---[ end Kernel panic - not syncing: Fatal exception ]---\n\nThe root cause is that unpoison_memory() tries to check the PG_HWPoison\nflags of an uninitialized page.  So VM_BUG_ON_PAGE(PagePoisoned(page)) is\ntriggered.  This can be reproduced by below steps:\n\n1.Offline memory block:\n\n echo offline \u003e /sys/devices/system/memory/memory12/state\n\n2.Get offlined memory pfn:\n\n page-types -b n -rlN\n\n3.Write pfn to unpoison-pfn\n\n echo \u003cpfn\u003e \u003e /sys/kernel/debug/hwpoison/unpoison-pfn\n\nThis scenario can be identified by pfn_to_online_page() returning NULL. \nAnd ZONE_DEVICE pages are never expected, so we can simply fail if\npfn_to_online_page() == NULL to fix the bug."
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        "dateUpdated": "2025-10-02T13:26:26.409Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8e01ea186a52c90694c08a9ff57bea1b0e78256a"
        },
        {
          "url": "https://git.kernel.org/stable/c/fb65803ccff37cf9123c50c1c02efd1ed73c4ed5"
        },
        {
          "url": "https://git.kernel.org/stable/c/99f7048957f5ae3cee1c01189147e73a9a96de02"
        },
        {
          "url": "https://git.kernel.org/stable/c/e4ec6def5643a1c9511115b3884eb879572294c6"
        },
        {
          "url": "https://git.kernel.org/stable/c/3d278e89c2ea62b1aaa4b0d8a9766a35b3a3164a"
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        {
          "url": "https://git.kernel.org/stable/c/d613f53c83ec47089c4e25859d5e8e0359f6f8da"
        }
      ],
      "title": "mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-39883",
    "datePublished": "2025-09-23T06:00:51.548Z",
    "dateReserved": "2025-04-16T07:20:57.144Z",
    "dateUpdated": "2025-11-03T17:44:24.900Z",
    "state": "PUBLISHED"
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  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-39883\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-23T06:15:48.087\",\"lastModified\":\"2025-11-03T18:16:51.853\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory\\n\\nWhen I did memory failure tests, below panic occurs:\\n\\npage dumped because: VM_BUG_ON_PAGE(PagePoisoned(page))\\nkernel BUG at include/linux/page-flags.h:616!\\nOops: invalid opcode: 0000 [#1] PREEMPT SMP NOPTI\\nCPU: 3 PID: 720 Comm: bash Not tainted 6.10.0-rc1-00195-g148743902568 #40\\nRIP: 0010:unpoison_memory+0x2f3/0x590\\nRSP: 0018:ffffa57fc8787d60 EFLAGS: 00000246\\nRAX: 0000000000000037 RBX: 0000000000000009 RCX: ffff9be25fcdc9c8\\nRDX: 0000000000000000 RSI: 0000000000000027 RDI: ffff9be25fcdc9c0\\nRBP: 0000000000300000 R08: ffffffffb4956f88 R09: 0000000000009ffb\\nR10: 0000000000000284 R11: ffffffffb4926fa0 R12: ffffe6b00c000000\\nR13: ffff9bdb453dfd00 R14: 0000000000000000 R15: fffffffffffffffe\\nFS:  00007f08f04e4740(0000) GS:ffff9be25fcc0000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 0000564787a30410 CR3: 000000010d4e2000 CR4: 00000000000006f0\\nCall Trace:\\n \u003cTASK\u003e\\n unpoison_memory+0x2f3/0x590\\n simple_attr_write_xsigned.constprop.0.isra.0+0xb3/0x110\\n debugfs_attr_write+0x42/0x60\\n full_proxy_write+0x5b/0x80\\n vfs_write+0xd5/0x540\\n ksys_write+0x64/0xe0\\n do_syscall_64+0xb9/0x1d0\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\nRIP: 0033:0x7f08f0314887\\nRSP: 002b:00007ffece710078 EFLAGS: 00000246 ORIG_RAX: 0000000000000001\\nRAX: ffffffffffffffda RBX: 0000000000000009 RCX: 00007f08f0314887\\nRDX: 0000000000000009 RSI: 0000564787a30410 RDI: 0000000000000001\\nRBP: 0000564787a30410 R08: 000000000000fefe R09: 000000007fffffff\\nR10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000009\\nR13: 00007f08f041b780 R14: 00007f08f0417600 R15: 00007f08f0416a00\\n \u003c/TASK\u003e\\nModules linked in: hwpoison_inject\\n---[ end trace 0000000000000000 ]---\\nRIP: 0010:unpoison_memory+0x2f3/0x590\\nRSP: 0018:ffffa57fc8787d60 EFLAGS: 00000246\\nRAX: 0000000000000037 RBX: 0000000000000009 RCX: ffff9be25fcdc9c8\\nRDX: 0000000000000000 RSI: 0000000000000027 RDI: ffff9be25fcdc9c0\\nRBP: 0000000000300000 R08: ffffffffb4956f88 R09: 0000000000009ffb\\nR10: 0000000000000284 R11: ffffffffb4926fa0 R12: ffffe6b00c000000\\nR13: ffff9bdb453dfd00 R14: 0000000000000000 R15: fffffffffffffffe\\nFS:  00007f08f04e4740(0000) GS:ffff9be25fcc0000(0000) knlGS:0000000000000000\\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\nCR2: 0000564787a30410 CR3: 000000010d4e2000 CR4: 00000000000006f0\\nKernel panic - not syncing: Fatal exception\\nKernel Offset: 0x31c00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)\\n---[ end Kernel panic - not syncing: Fatal exception ]---\\n\\nThe root cause is that unpoison_memory() tries to check the PG_HWPoison\\nflags of an uninitialized page.  So VM_BUG_ON_PAGE(PagePoisoned(page)) is\\ntriggered.  This can be reproduced by below steps:\\n\\n1.Offline memory block:\\n\\n echo offline \u003e /sys/devices/system/memory/memory12/state\\n\\n2.Get offlined memory pfn:\\n\\n page-types -b n -rlN\\n\\n3.Write pfn to unpoison-pfn\\n\\n echo \u003cpfn\u003e \u003e /sys/kernel/debug/hwpoison/unpoison-pfn\\n\\nThis scenario can be identified by pfn_to_online_page() returning NULL. \\nAnd ZONE_DEVICE pages are never expected, so we can simply fail if\\npfn_to_online_page() == NULL to fix the bug.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3d278e89c2ea62b1aaa4b0d8a9766a35b3a3164a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/63a327a2375a8ce7a47dec5aaa4d8a9ae0a00b96\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7618fd443aa4cfa553a64cacf5721581653ee7b0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8e01ea186a52c90694c08a9ff57bea1b0e78256a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/99f7048957f5ae3cee1c01189147e73a9a96de02\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d613f53c83ec47089c4e25859d5e8e0359f6f8da\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e4ec6def5643a1c9511115b3884eb879572294c6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fb65803ccff37cf9123c50c1c02efd1ed73c4ed5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
  }
}


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