CVE-2024-40914 (GCVE-0-2024-40914)

Vulnerability from cvelistv5 – Published: 2024-07-12 12:24 – Updated: 2026-05-23 15:50
VLAI
Title
mm/huge_memory: don't unpoison huge_zero_folio
Summary
In the Linux kernel, the following vulnerability has been resolved: mm/huge_memory: don't unpoison huge_zero_folio When I did memory failure tests recently, below panic occurs: kernel BUG at include/linux/mm.h:1135! invalid opcode: 0000 [#1] PREEMPT SMP NOPTI CPU: 9 PID: 137 Comm: kswapd1 Not tainted 6.9.0-rc4-00491-gd5ce28f156fe-dirty #14 RIP: 0010:shrink_huge_zero_page_scan+0x168/0x1a0 RSP: 0018:ffff9933c6c57bd0 EFLAGS: 00000246 RAX: 000000000000003e RBX: 0000000000000000 RCX: ffff88f61fc5c9c8 RDX: 0000000000000000 RSI: 0000000000000027 RDI: ffff88f61fc5c9c0 RBP: ffffcd7c446b0000 R08: ffffffff9a9405f0 R09: 0000000000005492 R10: 00000000000030ea R11: ffffffff9a9405f0 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffff88e703c4ac00 FS: 0000000000000000(0000) GS:ffff88f61fc40000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f4da6e9878 CR3: 0000000c71048000 CR4: 00000000000006f0 Call Trace: <TASK> do_shrink_slab+0x14f/0x6a0 shrink_slab+0xca/0x8c0 shrink_node+0x2d0/0x7d0 balance_pgdat+0x33a/0x720 kswapd+0x1f3/0x410 kthread+0xd5/0x100 ret_from_fork+0x2f/0x50 ret_from_fork_asm+0x1a/0x30 </TASK> Modules linked in: mce_inject hwpoison_inject ---[ end trace 0000000000000000 ]--- RIP: 0010:shrink_huge_zero_page_scan+0x168/0x1a0 RSP: 0018:ffff9933c6c57bd0 EFLAGS: 00000246 RAX: 000000000000003e RBX: 0000000000000000 RCX: ffff88f61fc5c9c8 RDX: 0000000000000000 RSI: 0000000000000027 RDI: ffff88f61fc5c9c0 RBP: ffffcd7c446b0000 R08: ffffffff9a9405f0 R09: 0000000000005492 R10: 00000000000030ea R11: ffffffff9a9405f0 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffff88e703c4ac00 FS: 0000000000000000(0000) GS:ffff88f61fc40000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f4da6e9878 CR3: 0000000c71048000 CR4: 00000000000006f0 The root cause is that HWPoison flag will be set for huge_zero_folio without increasing the folio refcnt. But then unpoison_memory() will decrease the folio refcnt unexpectedly as it appears like a successfully hwpoisoned folio leading to VM_BUG_ON_PAGE(page_ref_count(page) == 0) when releasing huge_zero_folio. Skip unpoisoning huge_zero_folio in unpoison_memory() to fix this issue. We're not prepared to unpoison huge_zero_folio yet.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: f8f836100fff594cea8a0a027affb9d5520f09a7 , < 688bb46ad339497b5b7f527b6636d2afe04b46af (git)
Affected: 478d134e9506c7e9bfe2830ed03dd85e97966313 , < b2494506f30675245a3e6787281f79601af087bf (git)
Affected: 478d134e9506c7e9bfe2830ed03dd85e97966313 , < 0d73477af964dbd7396163a13817baf13940bca9 (git)
Affected: 478d134e9506c7e9bfe2830ed03dd85e97966313 , < d72b7711919de49d92a67dfc844a6cf4c23dd794 (git)
Affected: 478d134e9506c7e9bfe2830ed03dd85e97966313 , < fe6f86f4b40855a130a19aa589f9ba7f650423f4 (git)
Affected: 13d9b8cd12f37d133b07ea5b323583e8a0c6b738 (git)
Affected: 5.15.41 , < 5.15.162 (semver)
Affected: 5.17.9 , < 5.18 (semver)
Create a notification for this product.
Linux Linux Affected: 5.18
Unaffected: 0 , < 5.18 (semver)
Unaffected: 5.15.162 , ≤ 5.15.* (semver)
Unaffected: 6.1.95 , ≤ 6.1.* (semver)
Unaffected: 6.6.35 , ≤ 6.6.* (semver)
Unaffected: 6.9.6 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/huge_memory: don\u0027t unpoison huge_zero_folio\n\nWhen I did memory failure tests recently, below panic occurs:\n\n kernel BUG at include/linux/mm.h:1135!\n invalid opcode: 0000 [#1] PREEMPT SMP NOPTI\n CPU: 9 PID: 137 Comm: kswapd1 Not tainted 6.9.0-rc4-00491-gd5ce28f156fe-dirty #14\n RIP: 0010:shrink_huge_zero_page_scan+0x168/0x1a0\n RSP: 0018:ffff9933c6c57bd0 EFLAGS: 00000246\n RAX: 000000000000003e RBX: 0000000000000000 RCX: ffff88f61fc5c9c8\n RDX: 0000000000000000 RSI: 0000000000000027 RDI: ffff88f61fc5c9c0\n RBP: ffffcd7c446b0000 R08: ffffffff9a9405f0 R09: 0000000000005492\n R10: 00000000000030ea R11: ffffffff9a9405f0 R12: 0000000000000000\n R13: 0000000000000000 R14: 0000000000000000 R15: ffff88e703c4ac00\n FS:  0000000000000000(0000) GS:ffff88f61fc40000(0000) knlGS:0000000000000000\n CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 000055f4da6e9878 CR3: 0000000c71048000 CR4: 00000000000006f0\n Call Trace:\n  \u003cTASK\u003e\n  do_shrink_slab+0x14f/0x6a0\n  shrink_slab+0xca/0x8c0\n  shrink_node+0x2d0/0x7d0\n  balance_pgdat+0x33a/0x720\n  kswapd+0x1f3/0x410\n  kthread+0xd5/0x100\n  ret_from_fork+0x2f/0x50\n  ret_from_fork_asm+0x1a/0x30\n  \u003c/TASK\u003e\n Modules linked in: mce_inject hwpoison_inject\n ---[ end trace 0000000000000000 ]---\n RIP: 0010:shrink_huge_zero_page_scan+0x168/0x1a0\n RSP: 0018:ffff9933c6c57bd0 EFLAGS: 00000246\n RAX: 000000000000003e RBX: 0000000000000000 RCX: ffff88f61fc5c9c8\n RDX: 0000000000000000 RSI: 0000000000000027 RDI: ffff88f61fc5c9c0\n RBP: ffffcd7c446b0000 R08: ffffffff9a9405f0 R09: 0000000000005492\n R10: 00000000000030ea R11: ffffffff9a9405f0 R12: 0000000000000000\n R13: 0000000000000000 R14: 0000000000000000 R15: ffff88e703c4ac00\n FS:  0000000000000000(0000) GS:ffff88f61fc40000(0000) knlGS:0000000000000000\n CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 000055f4da6e9878 CR3: 0000000c71048000 CR4: 00000000000006f0\n\nThe root cause is that HWPoison flag will be set for huge_zero_folio\nwithout increasing the folio refcnt.  But then unpoison_memory() will\ndecrease the folio refcnt unexpectedly as it appears like a successfully\nhwpoisoned folio leading to VM_BUG_ON_PAGE(page_ref_count(page) == 0) when\nreleasing huge_zero_folio.\n\nSkip unpoisoning huge_zero_folio in unpoison_memory() to fix this issue. \nWe\u0027re not prepared to unpoison huge_zero_folio yet."
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      "date": "2026-06-02",
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      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmm/huge_memory: don\u0027t unpoison huge_zero_folio\\n\\nWhen I did memory failure tests recently, below panic occurs:\\n\\n kernel BUG at include/linux/mm.h:1135!\\n invalid opcode: 0000 [#1] PREEMPT SMP NOPTI\\n CPU: 9 PID: 137 Comm: kswapd1 Not tainted 6.9.0-rc4-00491-gd5ce28f156fe-dirty #14\\n RIP: 0010:shrink_huge_zero_page_scan+0x168/0x1a0\\n RSP: 0018:ffff9933c6c57bd0 EFLAGS: 00000246\\n RAX: 000000000000003e RBX: 0000000000000000 RCX: ffff88f61fc5c9c8\\n RDX: 0000000000000000 RSI: 0000000000000027 RDI: ffff88f61fc5c9c0\\n RBP: ffffcd7c446b0000 R08: ffffffff9a9405f0 R09: 0000000000005492\\n R10: 00000000000030ea R11: ffffffff9a9405f0 R12: 0000000000000000\\n R13: 0000000000000000 R14: 0000000000000000 R15: ffff88e703c4ac00\\n FS:  0000000000000000(0000) GS:ffff88f61fc40000(0000) knlGS:0000000000000000\\n CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n CR2: 000055f4da6e9878 CR3: 0000000c71048000 CR4: 00000000000006f0\\n Call Trace:\\n  \u003cTASK\u003e\\n  do_shrink_slab+0x14f/0x6a0\\n  shrink_slab+0xca/0x8c0\\n  shrink_node+0x2d0/0x7d0\\n  balance_pgdat+0x33a/0x720\\n  kswapd+0x1f3/0x410\\n  kthread+0xd5/0x100\\n  ret_from_fork+0x2f/0x50\\n  ret_from_fork_asm+0x1a/0x30\\n  \u003c/TASK\u003e\\n Modules linked in: mce_inject hwpoison_inject\\n ---[ end trace 0000000000000000 ]---\\n RIP: 0010:shrink_huge_zero_page_scan+0x168/0x1a0\\n RSP: 0018:ffff9933c6c57bd0 EFLAGS: 00000246\\n RAX: 000000000000003e RBX: 0000000000000000 RCX: ffff88f61fc5c9c8\\n RDX: 0000000000000000 RSI: 0000000000000027 RDI: ffff88f61fc5c9c0\\n RBP: ffffcd7c446b0000 R08: ffffffff9a9405f0 R09: 0000000000005492\\n R10: 00000000000030ea R11: ffffffff9a9405f0 R12: 0000000000000000\\n R13: 0000000000000000 R14: 0000000000000000 R15: ffff88e703c4ac00\\n FS:  0000000000000000(0000) GS:ffff88f61fc40000(0000) knlGS:0000000000000000\\n CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n CR2: 000055f4da6e9878 CR3: 0000000c71048000 CR4: 00000000000006f0\\n\\nThe root cause is that HWPoison flag will be set for huge_zero_folio\\nwithout increasing the folio refcnt.  But then unpoison_memory() will\\ndecrease the folio refcnt unexpectedly as it appears like a successfully\\nhwpoisoned folio leading to VM_BUG_ON_PAGE(page_ref_count(page) == 0) when\\nreleasing huge_zero_folio.\\n\\nSkip unpoisoning huge_zero_folio in unpoison_memory() to fix this issue. \\nWe\u0027re not prepared to unpoison huge_zero_folio yet.\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se resolvi\\u00f3 la siguiente vulnerabilidad: mm/huge_memory: no desvenenes a huge_zero_folio Cuando hice pruebas de falla de memoria recientemente, se produjo el siguiente p\\u00e1nico: \\u00a1ERROR del kernel en include/linux/mm.h:1135! c\\u00f3digo de operaci\\u00f3n no v\\u00e1lido: 0000 [#1] PREEMPT SMP NOPTI CPU: 9 PID: 137 Comm: kswapd1 No est\\u00e1 contaminado 6.9.0-rc4-00491-gd5ce28f156fe-dirty #14 RIP: 0010:shrink_huge_zero_page_scan+0x168/0x1a0 RSP: 0018:ffff 9933c6c57bd0 EFLAGS : 00000246 RAX: 000000000000003e RBX: 0000000000000000 RCX: ffff88f61fc5c9c8 RDX: 0000000000000000 RSI: 0000000000000027 RDI: 5c9c0 RBP: ffffcd7c446b0000 R08: ffffffff9a9405f0 R09: 0000000000005492 R10: 00000000000030ea R11: ffffffff9a9405f0 R12: 000000000000000000000 000000000000000 R14: 0000000000000000 R15: ffff88e703c4ac00 FS: 0000000000000000 (0000) GS:ffff88f61fc40000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f4da6e9878 CR3: 048000 CR4: 00000000000006f0 Seguimiento de llamadas:  do_shrink_slab+0x14f/0x6a0 Shrink_slab+0xca/0x8c0 Shrink_node +0x2d0/0x7d0 balance_pgdat+0x33a/0x720 kswapd+0x1f3/0x410 kthread+0xd5/0x100 ret_from_fork+0x2f/0x50 ret_from_fork_asm+0x1a/0x30  M\\u00f3dulos vinculados en: mce_inject hwpoison_inject ---[ traza final 0000000000000000 ]--- RIP: 0010:shrink_huge_zero_page_scan+0x168/0x1a0 RSP: 0018:ffff9933c6c57bd0 EFLAGS: 00000246 RAX: 000000000000003e RBX: 0000000000000000 RCX: ffff88f61 fc5c9c8 RDX: 0000000000000000 RSI: 00000000000000027 RDI: ffff88f61fc5c9c0 RBP: ffffcd7c446b0000 R08: ffffffff9a9405f0 R09: 00000000000005492 : 00000000000030ea R11: ffffffff9a9405f0 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffff88e703c4ac00 FS: 0000000000000000(0000) GS:ffff88f61fc40000 (0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f4da6e9878 CR3: 0000000c71048000 CR4: 0000000000000 6f0 La ra\\u00edz La causa es que el indicador HWPoison se establecer\\u00e1 para Huge_zero_folio sin aumentar la referencia del folio. Pero luego unpoison_memory() disminuir\\u00e1 el refcnt del folio inesperadamente, ya que aparece como un folio envenenado exitosamente que conduce a VM_BUG_ON_PAGE(page_ref_count(page) == 0) al liberar huge_zero_folio. Omita la eliminaci\\u00f3n de veneno de huge_zero_folio en unpoison_memory() para solucionar este problema. A\\u00fan no estamos preparados para desvenenar a Huge_zero_folio.\"}]",
      "id": "CVE-2024-40914",
      "lastModified": "2024-11-21T09:31:50.940",
      "published": "2024-07-12T13:15:14.567",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/0d73477af964dbd7396163a13817baf13940bca9\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/688bb46ad339497b5b7f527b6636d2afe04b46af\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/b2494506f30675245a3e6787281f79601af087bf\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/d72b7711919de49d92a67dfc844a6cf4c23dd794\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/fe6f86f4b40855a130a19aa589f9ba7f650423f4\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/0d73477af964dbd7396163a13817baf13940bca9\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/688bb46ad339497b5b7f527b6636d2afe04b46af\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/b2494506f30675245a3e6787281f79601af087bf\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/d72b7711919de49d92a67dfc844a6cf4c23dd794\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://git.kernel.org/stable/c/fe6f86f4b40855a130a19aa589f9ba7f650423f4\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Awaiting Analysis"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-40914\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-07-12T13:15:14.567\",\"lastModified\":\"2025-11-03T22:17:13.630\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmm/huge_memory: don\u0027t unpoison huge_zero_folio\\n\\nWhen I did memory failure tests recently, below panic occurs:\\n\\n kernel BUG at include/linux/mm.h:1135!\\n invalid opcode: 0000 [#1] PREEMPT SMP NOPTI\\n CPU: 9 PID: 137 Comm: kswapd1 Not tainted 6.9.0-rc4-00491-gd5ce28f156fe-dirty #14\\n RIP: 0010:shrink_huge_zero_page_scan+0x168/0x1a0\\n RSP: 0018:ffff9933c6c57bd0 EFLAGS: 00000246\\n RAX: 000000000000003e RBX: 0000000000000000 RCX: ffff88f61fc5c9c8\\n RDX: 0000000000000000 RSI: 0000000000000027 RDI: ffff88f61fc5c9c0\\n RBP: ffffcd7c446b0000 R08: ffffffff9a9405f0 R09: 0000000000005492\\n R10: 00000000000030ea R11: ffffffff9a9405f0 R12: 0000000000000000\\n R13: 0000000000000000 R14: 0000000000000000 R15: ffff88e703c4ac00\\n FS:  0000000000000000(0000) GS:ffff88f61fc40000(0000) knlGS:0000000000000000\\n CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n CR2: 000055f4da6e9878 CR3: 0000000c71048000 CR4: 00000000000006f0\\n Call Trace:\\n  \u003cTASK\u003e\\n  do_shrink_slab+0x14f/0x6a0\\n  shrink_slab+0xca/0x8c0\\n  shrink_node+0x2d0/0x7d0\\n  balance_pgdat+0x33a/0x720\\n  kswapd+0x1f3/0x410\\n  kthread+0xd5/0x100\\n  ret_from_fork+0x2f/0x50\\n  ret_from_fork_asm+0x1a/0x30\\n  \u003c/TASK\u003e\\n Modules linked in: mce_inject hwpoison_inject\\n ---[ end trace 0000000000000000 ]---\\n RIP: 0010:shrink_huge_zero_page_scan+0x168/0x1a0\\n RSP: 0018:ffff9933c6c57bd0 EFLAGS: 00000246\\n RAX: 000000000000003e RBX: 0000000000000000 RCX: ffff88f61fc5c9c8\\n RDX: 0000000000000000 RSI: 0000000000000027 RDI: ffff88f61fc5c9c0\\n RBP: ffffcd7c446b0000 R08: ffffffff9a9405f0 R09: 0000000000005492\\n R10: 00000000000030ea R11: ffffffff9a9405f0 R12: 0000000000000000\\n R13: 0000000000000000 R14: 0000000000000000 R15: ffff88e703c4ac00\\n FS:  0000000000000000(0000) GS:ffff88f61fc40000(0000) knlGS:0000000000000000\\n CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n CR2: 000055f4da6e9878 CR3: 0000000c71048000 CR4: 00000000000006f0\\n\\nThe root cause is that HWPoison flag will be set for huge_zero_folio\\nwithout increasing the folio refcnt.  But then unpoison_memory() will\\ndecrease the folio refcnt unexpectedly as it appears like a successfully\\nhwpoisoned folio leading to VM_BUG_ON_PAGE(page_ref_count(page) == 0) when\\nreleasing huge_zero_folio.\\n\\nSkip unpoisoning huge_zero_folio in unpoison_memory() to fix this issue. \\nWe\u0027re not prepared to unpoison huge_zero_folio yet.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: mm/huge_memory: no desvenenes a huge_zero_folio Cuando hice pruebas de falla de memoria recientemente, se produjo el siguiente p\u00e1nico: \u00a1ERROR del kernel en include/linux/mm.h:1135! c\u00f3digo de operaci\u00f3n no v\u00e1lido: 0000 [#1] PREEMPT SMP NOPTI CPU: 9 PID: 137 Comm: kswapd1 No est\u00e1 contaminado 6.9.0-rc4-00491-gd5ce28f156fe-dirty #14 RIP: 0010:shrink_huge_zero_page_scan+0x168/0x1a0 RSP: 0018:ffff 9933c6c57bd0 EFLAGS : 00000246 RAX: 000000000000003e RBX: 0000000000000000 RCX: ffff88f61fc5c9c8 RDX: 0000000000000000 RSI: 0000000000000027 RDI: 5c9c0 RBP: ffffcd7c446b0000 R08: ffffffff9a9405f0 R09: 0000000000005492 R10: 00000000000030ea R11: ffffffff9a9405f0 R12: 000000000000000000000 000000000000000 R14: 0000000000000000 R15: ffff88e703c4ac00 FS: 0000000000000000 (0000) GS:ffff88f61fc40000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f4da6e9878 CR3: 048000 CR4: 00000000000006f0 Seguimiento de llamadas:  do_shrink_slab+0x14f/0x6a0 Shrink_slab+0xca/0x8c0 Shrink_node +0x2d0/0x7d0 balance_pgdat+0x33a/0x720 kswapd+0x1f3/0x410 kthread+0xd5/0x100 ret_from_fork+0x2f/0x50 ret_from_fork_asm+0x1a/0x30  M\u00f3dulos vinculados en: mce_inject hwpoison_inject ---[ traza final 0000000000000000 ]--- RIP: 0010:shrink_huge_zero_page_scan+0x168/0x1a0 RSP: 0018:ffff9933c6c57bd0 EFLAGS: 00000246 RAX: 000000000000003e RBX: 0000000000000000 RCX: ffff88f61 fc5c9c8 RDX: 0000000000000000 RSI: 00000000000000027 RDI: ffff88f61fc5c9c0 RBP: ffffcd7c446b0000 R08: ffffffff9a9405f0 R09: 00000000000005492 : 00000000000030ea R11: ffffffff9a9405f0 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffff88e703c4ac00 FS: 0000000000000000(0000) GS:ffff88f61fc40000 (0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f4da6e9878 CR3: 0000000c71048000 CR4: 0000000000000 6f0 La ra\u00edz La causa es que el indicador HWPoison se establecer\u00e1 para Huge_zero_folio sin aumentar la referencia del folio. Pero luego unpoison_memory() disminuir\u00e1 el refcnt del folio inesperadamente, ya que aparece como un folio envenenado exitosamente que conduce a VM_BUG_ON_PAGE(page_ref_count(page) == 0) al liberar huge_zero_folio. Omita la eliminaci\u00f3n de veneno de huge_zero_folio en unpoison_memory() para solucionar este problema. A\u00fan no estamos preparados para desvenenar a Huge_zero_folio.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.15.41\",\"versionEndExcluding\":\"5.15.162\",\"matchCriteriaId\":\"164EDF99-AE68-470E-822B-93BA6761F9E5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.17.9\",\"versionEndExcluding\":\"5.18\",\"matchCriteriaId\":\"237FF665-63EB-4FB8-B2DC-5BD5D79B8053\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.18.1\",\"versionEndExcluding\":\"6.1.95\",\"matchCriteriaId\":\"02CCDEAE-9DFB-4987-B047-B9400C5AB0CA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.35\",\"matchCriteriaId\":\"6F019D15-84C0-416B-8C57-7F51B68992F0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.9.6\",\"matchCriteriaId\":\"0ABBBA1D-F79D-4BDB-AA41-D1EDCC4A6975\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.18:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"0384FA0A-DE99-48D7-84E3-46ED0C3B5E03\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.18:rc7:*:*:*:*:*:*\",\"matchCriteriaId\":\"2FCFCE58-5118-4D05-864E-C82CF20EABE5\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0d73477af964dbd7396163a13817baf13940bca9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/688bb46ad339497b5b7f527b6636d2afe04b46af\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b2494506f30675245a3e6787281f79601af087bf\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d72b7711919de49d92a67dfc844a6cf4c23dd794\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/fe6f86f4b40855a130a19aa589f9ba7f650423f4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/0d73477af964dbd7396163a13817baf13940bca9\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/688bb46ad339497b5b7f527b6636d2afe04b46af\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b2494506f30675245a3e6787281f79601af087bf\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d72b7711919de49d92a67dfc844a6cf4c23dd794\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/fe6f86f4b40855a130a19aa589f9ba7f650423f4\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/688bb46ad339497b5b7f527b6636d2afe04b46af\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/b2494506f30675245a3e6787281f79601af087bf\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/0d73477af964dbd7396163a13817baf13940bca9\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/d72b7711919de49d92a67dfc844a6cf4c23dd794\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/fe6f86f4b40855a130a19aa589f9ba7f650423f4\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T21:57:44.975Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-40914\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T17:05:52.834846Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:25.016Z\"}}], \"cna\": {\"title\": \"mm/huge_memory: don\u0027t unpoison huge_zero_folio\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"f8f836100fff594cea8a0a027affb9d5520f09a7\", \"lessThan\": \"688bb46ad339497b5b7f527b6636d2afe04b46af\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"478d134e9506c7e9bfe2830ed03dd85e97966313\", \"lessThan\": \"b2494506f30675245a3e6787281f79601af087bf\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"478d134e9506c7e9bfe2830ed03dd85e97966313\", \"lessThan\": \"0d73477af964dbd7396163a13817baf13940bca9\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"478d134e9506c7e9bfe2830ed03dd85e97966313\", \"lessThan\": \"d72b7711919de49d92a67dfc844a6cf4c23dd794\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"478d134e9506c7e9bfe2830ed03dd85e97966313\", \"lessThan\": \"fe6f86f4b40855a130a19aa589f9ba7f650423f4\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"13d9b8cd12f37d133b07ea5b323583e8a0c6b738\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"5.15.41\", \"lessThan\": \"5.15.162\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"5.17.9\", \"lessThan\": \"5.18\", \"versionType\": \"semver\"}], \"programFiles\": [\"mm/memory-failure.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.18\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.18\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.15.162\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.95\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.35\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9.6\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.9.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"mm/memory-failure.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/688bb46ad339497b5b7f527b6636d2afe04b46af\"}, {\"url\": \"https://git.kernel.org/stable/c/b2494506f30675245a3e6787281f79601af087bf\"}, {\"url\": \"https://git.kernel.org/stable/c/0d73477af964dbd7396163a13817baf13940bca9\"}, {\"url\": \"https://git.kernel.org/stable/c/d72b7711919de49d92a67dfc844a6cf4c23dd794\"}, {\"url\": \"https://git.kernel.org/stable/c/fe6f86f4b40855a130a19aa589f9ba7f650423f4\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmm/huge_memory: don\u0027t unpoison huge_zero_folio\\n\\nWhen I did memory failure tests recently, below panic occurs:\\n\\n kernel BUG at include/linux/mm.h:1135!\\n invalid opcode: 0000 [#1] PREEMPT SMP NOPTI\\n CPU: 9 PID: 137 Comm: kswapd1 Not tainted 6.9.0-rc4-00491-gd5ce28f156fe-dirty #14\\n RIP: 0010:shrink_huge_zero_page_scan+0x168/0x1a0\\n RSP: 0018:ffff9933c6c57bd0 EFLAGS: 00000246\\n RAX: 000000000000003e RBX: 0000000000000000 RCX: ffff88f61fc5c9c8\\n RDX: 0000000000000000 RSI: 0000000000000027 RDI: ffff88f61fc5c9c0\\n RBP: ffffcd7c446b0000 R08: ffffffff9a9405f0 R09: 0000000000005492\\n R10: 00000000000030ea R11: ffffffff9a9405f0 R12: 0000000000000000\\n R13: 0000000000000000 R14: 0000000000000000 R15: ffff88e703c4ac00\\n FS:  0000000000000000(0000) GS:ffff88f61fc40000(0000) knlGS:0000000000000000\\n CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n CR2: 000055f4da6e9878 CR3: 0000000c71048000 CR4: 00000000000006f0\\n Call Trace:\\n  \u003cTASK\u003e\\n  do_shrink_slab+0x14f/0x6a0\\n  shrink_slab+0xca/0x8c0\\n  shrink_node+0x2d0/0x7d0\\n  balance_pgdat+0x33a/0x720\\n  kswapd+0x1f3/0x410\\n  kthread+0xd5/0x100\\n  ret_from_fork+0x2f/0x50\\n  ret_from_fork_asm+0x1a/0x30\\n  \u003c/TASK\u003e\\n Modules linked in: mce_inject hwpoison_inject\\n ---[ end trace 0000000000000000 ]---\\n RIP: 0010:shrink_huge_zero_page_scan+0x168/0x1a0\\n RSP: 0018:ffff9933c6c57bd0 EFLAGS: 00000246\\n RAX: 000000000000003e RBX: 0000000000000000 RCX: ffff88f61fc5c9c8\\n RDX: 0000000000000000 RSI: 0000000000000027 RDI: ffff88f61fc5c9c0\\n RBP: ffffcd7c446b0000 R08: ffffffff9a9405f0 R09: 0000000000005492\\n R10: 00000000000030ea R11: ffffffff9a9405f0 R12: 0000000000000000\\n R13: 0000000000000000 R14: 0000000000000000 R15: ffff88e703c4ac00\\n FS:  0000000000000000(0000) GS:ffff88f61fc40000(0000) knlGS:0000000000000000\\n CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n CR2: 000055f4da6e9878 CR3: 0000000c71048000 CR4: 00000000000006f0\\n\\nThe root cause is that HWPoison flag will be set for huge_zero_folio\\nwithout increasing the folio refcnt.  But then unpoison_memory() will\\ndecrease the folio refcnt unexpectedly as it appears like a successfully\\nhwpoisoned folio leading to VM_BUG_ON_PAGE(page_ref_count(page) == 0) when\\nreleasing huge_zero_folio.\\n\\nSkip unpoisoning huge_zero_folio in unpoison_memory() to fix this issue. \\nWe\u0027re not prepared to unpoison huge_zero_folio yet.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.162\", \"versionStartIncluding\": \"5.15.41\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.95\", \"versionStartIncluding\": \"5.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.35\", \"versionStartIncluding\": \"5.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.9.6\", \"versionStartIncluding\": \"5.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10\", \"versionStartIncluding\": \"5.18\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"5.17.9\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-23T15:50:52.644Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-40914\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-23T15:50:52.644Z\", \"dateReserved\": \"2024-07-12T12:17:45.581Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-07-12T12:24:58.055Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Detection rules are retrieved from Rulezet.