{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2024-40914", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-07-12T12:17:45.581Z", "datePublished": "2024-07-12T12:24:58.055Z", "dateUpdated": "2024-09-11T17:34:39.386Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-07-15T06:51:21.829Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/huge_memory: don't 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 <TASK>\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 </TASK>\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're not prepared to unpoison huge_zero_folio yet."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["mm/memory-failure.c"], "versions": [{"version": "f8f836100fff", "lessThan": "688bb46ad339", "status": "affected", "versionType": "git"}, {"version": "478d134e9506", "lessThan": "b2494506f306", "status": "affected", "versionType": "git"}, {"version": "478d134e9506", "lessThan": "0d73477af964", "status": "affected", "versionType": "git"}, {"version": "478d134e9506", "lessThan": "d72b7711919d", "status": "affected", "versionType": "git"}, {"version": "478d134e9506", "lessThan": "fe6f86f4b408", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["mm/memory-failure.c"], "versions": [{"version": "5.18", "status": "affected"}, {"version": "0", "lessThan": "5.18", "status": "unaffected", "versionType": "custom"}, {"version": "5.15.162", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "custom"}, {"version": "6.1.95", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "custom"}, {"version": "6.6.35", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "custom"}, {"version": "6.9.6", "lessThanOrEqual": "6.9.*", "status": "unaffected", "versionType": "custom"}, {"version": "6.10", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "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"}], "title": "mm/huge_memory: don't unpoison huge_zero_folio", "x_generator": {"engine": "bippy-c9c4e1df01b2"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T04:39:55.283Z"}, "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"]}]}, {"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"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:34:39.386Z"}}]}}

{"dataType": "CVE_RECORD", "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"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T04:39:55.283Z"}}, {"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't 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": "f8f836100fff", "lessThan": "688bb46ad339", "versionType": "git"}, {"status": "affected", "version": "478d134e9506", "lessThan": "b2494506f306", "versionType": "git"}, {"status": "affected", "version": "478d134e9506", "lessThan": "0d73477af964", "versionType": "git"}, {"status": "affected", "version": "478d134e9506", "lessThan": "d72b7711919d", "versionType": "git"}, {"status": "affected", "version": "478d134e9506", "lessThan": "fe6f86f4b408", "versionType": "git"}], "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": "custom"}, {"status": "unaffected", "version": "5.15.162", "versionType": "custom", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.95", "versionType": "custom", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.35", "versionType": "custom", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.9.6", "versionType": "custom", "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-c9c4e1df01b2"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/huge_memory: don't 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 <TASK>\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 </TASK>\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're not prepared to unpoison huge_zero_folio yet."}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-07-15T06:51:21.829Z"}}}, "cveMetadata": {"cveId": "CVE-2024-40914", "state": "PUBLISHED", "dateUpdated": "2024-09-11T17:34:39.386Z", "dateReserved": "2024-07-12T12:17:45.581Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-07-12T12:24:58.055Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/huge_memory: don't 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 <TASK>\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 </TASK>\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're 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": "2024-07-12T16:34:58.687", "metrics": {}, "published": "2024-07-12T13:15:14.567", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "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"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"affected_release": [{"advisory": "RHSA-2024:5928", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-427.33.1.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-08-28T00:00:00Z"}, {"advisory": "RHSA-2024:5928", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-427.33.1.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-08-28T00:00:00Z"}, {"advisory": "RHSA-2024:6267", "cpe": "cpe:/a:redhat:rhel_eus:9.2", "package": "kernel-0:5.14.0-284.82.1.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-09-04T00:00:00Z"}, {"advisory": "RHSA-2024:6268", "cpe": "cpe:/a:redhat:rhel_eus:9.2::nfv", "package": "kernel-rt-0:5.14.0-284.82.1.rt14.367.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-09-04T00:00:00Z"}], "bugzilla": {"description": "kernel: mm/huge_memory: don&#39;t unpoison huge_zero_folio", "id": "2297498", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2297498"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-911", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nmm/huge_memory: don't unpoison huge_zero_folio\nWhen I did memory failure tests recently, below panic occurs:\nkernel BUG at include/linux/mm.h:1135!\ninvalid opcode: 0000 [#1] PREEMPT SMP NOPTI\nCPU: 9 PID: 137 Comm: kswapd1 Not tainted 6.9.0-rc4-00491-gd5ce28f156fe-dirty #14\nRIP: 0010:shrink_huge_zero_page_scan+0x168/0x1a0\nRSP: 0018:ffff9933c6c57bd0 EFLAGS: 00000246\nRAX: 000000000000003e RBX: 0000000000000000 RCX: ffff88f61fc5c9c8\nRDX: 0000000000000000 RSI: 0000000000000027 RDI: ffff88f61fc5c9c0\nRBP: ffffcd7c446b0000 R08: ffffffff9a9405f0 R09: 0000000000005492\nR10: 00000000000030ea R11: ffffffff9a9405f0 R12: 0000000000000000\nR13: 0000000000000000 R14: 0000000000000000 R15: ffff88e703c4ac00\nFS: 0000000000000000(0000) GS:ffff88f61fc40000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 000055f4da6e9878 CR3: 0000000c71048000 CR4: 00000000000006f0\nCall Trace:\n<TASK>\ndo_shrink_slab+0x14f/0x6a0\nshrink_slab+0xca/0x8c0\nshrink_node+0x2d0/0x7d0\nbalance_pgdat+0x33a/0x720\nkswapd+0x1f3/0x410\nkthread+0xd5/0x100\nret_from_fork+0x2f/0x50\nret_from_fork_asm+0x1a/0x30\n</TASK>\nModules linked in: mce_inject hwpoison_inject\n---[ end trace 0000000000000000 ]---\nRIP: 0010:shrink_huge_zero_page_scan+0x168/0x1a0\nRSP: 0018:ffff9933c6c57bd0 EFLAGS: 00000246\nRAX: 000000000000003e RBX: 0000000000000000 RCX: ffff88f61fc5c9c8\nRDX: 0000000000000000 RSI: 0000000000000027 RDI: ffff88f61fc5c9c0\nRBP: ffffcd7c446b0000 R08: ffffffff9a9405f0 R09: 0000000000005492\nR10: 00000000000030ea R11: ffffffff9a9405f0 R12: 0000000000000000\nR13: 0000000000000000 R14: 0000000000000000 R15: ffff88e703c4ac00\nFS: 0000000000000000(0000) GS:ffff88f61fc40000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 000055f4da6e9878 CR3: 0000000c71048000 CR4: 00000000000006f0\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.\nSkip unpoisoning huge_zero_folio in unpoison_memory() to fix this issue. \nWe're not prepared to unpoison huge_zero_folio yet."], "name": "CVE-2024-40914", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-07-12T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-40914\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-40914\nhttps://lore.kernel.org/linux-cve-announce/2024071210-CVE-2024-40914-0e04@gregkh/T"], "threat_severity": "Moderate", "upstream_fix": "kernel 5.15.162, kernel 6.1.95, kernel 6.6.35, kernel 6.9.6, kernel 6.10-rc1"}