cve-2024-40981
Vulnerability from cvelistv5
Published
2024-07-12 12:32
Modified
2024-12-19 09:09
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: batman-adv: bypass empty buckets in batadv_purge_orig_ref() Many syzbot reports are pointing to soft lockups in batadv_purge_orig_ref() [1] Root cause is unknown, but we can avoid spending too much time there and perhaps get more interesting reports. [1] watchdog: BUG: soft lockup - CPU#0 stuck for 27s! [kworker/u4:6:621] Modules linked in: irq event stamp: 6182794 hardirqs last enabled at (6182793): [<ffff8000801dae10>] __local_bh_enable_ip+0x224/0x44c kernel/softirq.c:386 hardirqs last disabled at (6182794): [<ffff80008ad66a78>] __el1_irq arch/arm64/kernel/entry-common.c:533 [inline] hardirqs last disabled at (6182794): [<ffff80008ad66a78>] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:551 softirqs last enabled at (6182792): [<ffff80008aab71c4>] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (6182792): [<ffff80008aab71c4>] batadv_purge_orig_ref+0x114c/0x1228 net/batman-adv/originator.c:1287 softirqs last disabled at (6182790): [<ffff80008aab61dc>] spin_lock_bh include/linux/spinlock.h:356 [inline] softirqs last disabled at (6182790): [<ffff80008aab61dc>] batadv_purge_orig_ref+0x164/0x1228 net/batman-adv/originator.c:1271 CPU: 0 PID: 621 Comm: kworker/u4:6 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 Workqueue: bat_events batadv_purge_orig pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : should_resched arch/arm64/include/asm/preempt.h:79 [inline] pc : __local_bh_enable_ip+0x228/0x44c kernel/softirq.c:388 lr : __local_bh_enable_ip+0x224/0x44c kernel/softirq.c:386 sp : ffff800099007970 x29: ffff800099007980 x28: 1fffe00018fce1bd x27: dfff800000000000 x26: ffff0000d2620008 x25: ffff0000c7e70de8 x24: 0000000000000001 x23: 1fffe00018e57781 x22: dfff800000000000 x21: ffff80008aab71c4 x20: ffff0001b40136c0 x19: ffff0000c72bbc08 x18: 1fffe0001a817bb0 x17: ffff800125414000 x16: ffff80008032116c x15: 0000000000000001 x14: 1fffe0001ee9d610 x13: 0000000000000000 x12: 0000000000000003 x11: 0000000000000000 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : 00000000005e5789 x7 : ffff80008aab61dc x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000006 x1 : 0000000000000080 x0 : ffff800125414000 Call trace: __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:27 [inline] arch_local_irq_enable arch/arm64/include/asm/irqflags.h:49 [inline] __local_bh_enable_ip+0x228/0x44c kernel/softirq.c:386 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline] _raw_spin_unlock_bh+0x3c/0x4c kernel/locking/spinlock.c:210 spin_unlock_bh include/linux/spinlock.h:396 [inline] batadv_purge_orig_ref+0x114c/0x1228 net/batman-adv/originator.c:1287 batadv_purge_orig+0x20/0x70 net/batman-adv/originator.c:1300 process_one_work+0x694/0x1204 kernel/workqueue.c:2633 process_scheduled_works kernel/workqueue.c:2706 [inline] worker_thread+0x938/0xef4 kernel/workqueue.c:2787 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : arch_local_irq_enable+0x8/0xc arch/arm64/include/asm/irqflags.h:51 lr : default_idle_call+0xf8/0x128 kernel/sched/idle.c:103 sp : ffff800093a17d30 x29: ffff800093a17d30 x28: dfff800000000000 x27: 1ffff00012742fb4 x26: ffff80008ec9d000 x25: 0000000000000000 x24: 0000000000000002 x23: 1ffff00011d93a74 x22: ffff80008ec9d3a0 x21: 0000000000000000 x20: ffff0000c19dbc00 x19: ffff8000802d0fd8 x18: 1fffe00036804396 x17: ffff80008ec9d000 x16: ffff8000802d089c x15: 0000000000000001 ---truncated---
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/154e3f862ba33675cf3f4abf0a0a309a89df87d2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2685008a5f9a636434a8508419cee8158a2f52c8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/40dc8ab605894acae1473e434944924a22cfaaa0Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/79636f636126775436a11ee9cf00a9253a33ac11Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/82cdea8f3af1e36543c937df963d108c60bea030Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/92176caf9896572f00e741a93cecc0ef1172da07Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ae7f3cffe86aea3da0e8e079525a1ae619b8862aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fed7914858a1f1f3e6350bb0f620d6ef15107d16Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/154e3f862ba33675cf3f4abf0a0a309a89df87d2Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/2685008a5f9a636434a8508419cee8158a2f52c8Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/40dc8ab605894acae1473e434944924a22cfaaa0Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/79636f636126775436a11ee9cf00a9253a33ac11Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/82cdea8f3af1e36543c937df963d108c60bea030Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/92176caf9896572f00e741a93cecc0ef1172da07Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ae7f3cffe86aea3da0e8e079525a1ae619b8862aPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/fed7914858a1f1f3e6350bb0f620d6ef15107d16Patch
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
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         descriptions: [
            {
               lang: "en",
               value: "In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: bypass empty buckets in batadv_purge_orig_ref()\n\nMany syzbot reports are pointing to soft lockups in\nbatadv_purge_orig_ref() [1]\n\nRoot cause is unknown, but we can avoid spending too much\ntime there and perhaps get more interesting reports.\n\n[1]\n\nwatchdog: BUG: soft lockup - CPU#0 stuck for 27s! [kworker/u4:6:621]\nModules linked in:\nirq event stamp: 6182794\n hardirqs last  enabled at (6182793): [<ffff8000801dae10>] __local_bh_enable_ip+0x224/0x44c kernel/softirq.c:386\n hardirqs last disabled at (6182794): [<ffff80008ad66a78>] __el1_irq arch/arm64/kernel/entry-common.c:533 [inline]\n hardirqs last disabled at (6182794): [<ffff80008ad66a78>] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:551\n softirqs last  enabled at (6182792): [<ffff80008aab71c4>] spin_unlock_bh include/linux/spinlock.h:396 [inline]\n softirqs last  enabled at (6182792): [<ffff80008aab71c4>] batadv_purge_orig_ref+0x114c/0x1228 net/batman-adv/originator.c:1287\n softirqs last disabled at (6182790): [<ffff80008aab61dc>] spin_lock_bh include/linux/spinlock.h:356 [inline]\n softirqs last disabled at (6182790): [<ffff80008aab61dc>] batadv_purge_orig_ref+0x164/0x1228 net/batman-adv/originator.c:1271\nCPU: 0 PID: 621 Comm: kworker/u4:6 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024\nWorkqueue: bat_events batadv_purge_orig\npstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n pc : should_resched arch/arm64/include/asm/preempt.h:79 [inline]\n pc : __local_bh_enable_ip+0x228/0x44c kernel/softirq.c:388\n lr : __local_bh_enable_ip+0x224/0x44c kernel/softirq.c:386\nsp : ffff800099007970\nx29: ffff800099007980 x28: 1fffe00018fce1bd x27: dfff800000000000\nx26: ffff0000d2620008 x25: ffff0000c7e70de8 x24: 0000000000000001\nx23: 1fffe00018e57781 x22: dfff800000000000 x21: ffff80008aab71c4\nx20: ffff0001b40136c0 x19: ffff0000c72bbc08 x18: 1fffe0001a817bb0\nx17: ffff800125414000 x16: ffff80008032116c x15: 0000000000000001\nx14: 1fffe0001ee9d610 x13: 0000000000000000 x12: 0000000000000003\nx11: 0000000000000000 x10: 0000000000ff0100 x9 : 0000000000000000\nx8 : 00000000005e5789 x7 : ffff80008aab61dc x6 : 0000000000000000\nx5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000\nx2 : 0000000000000006 x1 : 0000000000000080 x0 : ffff800125414000\nCall trace:\n  __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:27 [inline]\n  arch_local_irq_enable arch/arm64/include/asm/irqflags.h:49 [inline]\n  __local_bh_enable_ip+0x228/0x44c kernel/softirq.c:386\n  __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline]\n  _raw_spin_unlock_bh+0x3c/0x4c kernel/locking/spinlock.c:210\n  spin_unlock_bh include/linux/spinlock.h:396 [inline]\n  batadv_purge_orig_ref+0x114c/0x1228 net/batman-adv/originator.c:1287\n  batadv_purge_orig+0x20/0x70 net/batman-adv/originator.c:1300\n  process_one_work+0x694/0x1204 kernel/workqueue.c:2633\n  process_scheduled_works kernel/workqueue.c:2706 [inline]\n  worker_thread+0x938/0xef4 kernel/workqueue.c:2787\n  kthread+0x288/0x310 kernel/kthread.c:388\n  ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860\nSending NMI from CPU 0 to CPUs 1:\nNMI backtrace for cpu 1\nCPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024\npstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n pc : arch_local_irq_enable+0x8/0xc arch/arm64/include/asm/irqflags.h:51\n lr : default_idle_call+0xf8/0x128 kernel/sched/idle.c:103\nsp : ffff800093a17d30\nx29: ffff800093a17d30 x28: dfff800000000000 x27: 1ffff00012742fb4\nx26: ffff80008ec9d000 x25: 0000000000000000 x24: 0000000000000002\nx23: 1ffff00011d93a74 x22: ffff80008ec9d3a0 x21: 0000000000000000\nx20: ffff0000c19dbc00 x19: ffff8000802d0fd8 x18: 1fffe00036804396\nx17: ffff80008ec9d000 x16: ffff8000802d089c x15: 0000000000000001\n---truncated---",
            },
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         providerMetadata: {
            dateUpdated: "2024-12-19T09:09:24.027Z",
            orgId: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            shortName: "Linux",
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         references: [
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               url: "https://git.kernel.org/stable/c/79636f636126775436a11ee9cf00a9253a33ac11",
            },
            {
               url: "https://git.kernel.org/stable/c/154e3f862ba33675cf3f4abf0a0a309a89df87d2",
            },
            {
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         title: "batman-adv: bypass empty buckets in batadv_purge_orig_ref()",
         x_generator: {
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   cveMetadata: {
      assignerOrgId: "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      assignerShortName: "Linux",
      cveId: "CVE-2024-40981",
      datePublished: "2024-07-12T12:32:16.277Z",
      dateReserved: "2024-07-12T12:17:45.604Z",
      dateUpdated: "2024-12-19T09:09:24.027Z",
      state: "PUBLISHED",
   },
   dataType: "CVE_RECORD",
   dataVersion: "5.1",
   "vulnerability-lookup:meta": {
      nvd: "{\"cve\":{\"id\":\"CVE-2024-40981\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-07-12T13:15:19.627\",\"lastModified\":\"2024-11-21T09:31:59.973\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbatman-adv: bypass empty buckets in batadv_purge_orig_ref()\\n\\nMany syzbot reports are pointing to soft lockups in\\nbatadv_purge_orig_ref() [1]\\n\\nRoot cause is unknown, but we can avoid spending too much\\ntime there and perhaps get more interesting reports.\\n\\n[1]\\n\\nwatchdog: BUG: soft lockup - CPU#0 stuck for 27s! [kworker/u4:6:621]\\nModules linked in:\\nirq event stamp: 6182794\\n hardirqs last  enabled at (6182793): [<ffff8000801dae10>] __local_bh_enable_ip+0x224/0x44c kernel/softirq.c:386\\n hardirqs last disabled at (6182794): [<ffff80008ad66a78>] __el1_irq arch/arm64/kernel/entry-common.c:533 [inline]\\n hardirqs last disabled at (6182794): [<ffff80008ad66a78>] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:551\\n softirqs last  enabled at (6182792): [<ffff80008aab71c4>] spin_unlock_bh include/linux/spinlock.h:396 [inline]\\n softirqs last  enabled at (6182792): [<ffff80008aab71c4>] batadv_purge_orig_ref+0x114c/0x1228 net/batman-adv/originator.c:1287\\n softirqs last disabled at (6182790): [<ffff80008aab61dc>] spin_lock_bh include/linux/spinlock.h:356 [inline]\\n softirqs last disabled at (6182790): [<ffff80008aab61dc>] batadv_purge_orig_ref+0x164/0x1228 net/batman-adv/originator.c:1271\\nCPU: 0 PID: 621 Comm: kworker/u4:6 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024\\nWorkqueue: bat_events batadv_purge_orig\\npstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\\n pc : should_resched arch/arm64/include/asm/preempt.h:79 [inline]\\n pc : __local_bh_enable_ip+0x228/0x44c kernel/softirq.c:388\\n lr : __local_bh_enable_ip+0x224/0x44c kernel/softirq.c:386\\nsp : ffff800099007970\\nx29: ffff800099007980 x28: 1fffe00018fce1bd x27: dfff800000000000\\nx26: ffff0000d2620008 x25: ffff0000c7e70de8 x24: 0000000000000001\\nx23: 1fffe00018e57781 x22: dfff800000000000 x21: ffff80008aab71c4\\nx20: ffff0001b40136c0 x19: ffff0000c72bbc08 x18: 1fffe0001a817bb0\\nx17: ffff800125414000 x16: ffff80008032116c x15: 0000000000000001\\nx14: 1fffe0001ee9d610 x13: 0000000000000000 x12: 0000000000000003\\nx11: 0000000000000000 x10: 0000000000ff0100 x9 : 0000000000000000\\nx8 : 00000000005e5789 x7 : ffff80008aab61dc x6 : 0000000000000000\\nx5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000\\nx2 : 0000000000000006 x1 : 0000000000000080 x0 : ffff800125414000\\nCall trace:\\n  __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:27 [inline]\\n  arch_local_irq_enable arch/arm64/include/asm/irqflags.h:49 [inline]\\n  __local_bh_enable_ip+0x228/0x44c kernel/softirq.c:386\\n  __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline]\\n  _raw_spin_unlock_bh+0x3c/0x4c kernel/locking/spinlock.c:210\\n  spin_unlock_bh include/linux/spinlock.h:396 [inline]\\n  batadv_purge_orig_ref+0x114c/0x1228 net/batman-adv/originator.c:1287\\n  batadv_purge_orig+0x20/0x70 net/batman-adv/originator.c:1300\\n  process_one_work+0x694/0x1204 kernel/workqueue.c:2633\\n  process_scheduled_works kernel/workqueue.c:2706 [inline]\\n  worker_thread+0x938/0xef4 kernel/workqueue.c:2787\\n  kthread+0x288/0x310 kernel/kthread.c:388\\n  ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860\\nSending NMI from CPU 0 to CPUs 1:\\nNMI backtrace for cpu 1\\nCPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024\\npstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\\n pc : arch_local_irq_enable+0x8/0xc arch/arm64/include/asm/irqflags.h:51\\n lr : default_idle_call+0xf8/0x128 kernel/sched/idle.c:103\\nsp : ffff800093a17d30\\nx29: ffff800093a17d30 x28: dfff800000000000 x27: 1ffff00012742fb4\\nx26: ffff80008ec9d000 x25: 0000000000000000 x24: 0000000000000002\\nx23: 1ffff00011d93a74 x22: ffff80008ec9d3a0 x21: 0000000000000000\\nx20: ffff0000c19dbc00 x19: ffff8000802d0fd8 x18: 1fffe00036804396\\nx17: ffff80008ec9d000 x16: ffff8000802d089c x15: 0000000000000001\\n---truncated---\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: batman-adv: evita depósitos vacíos en batadv_purge_orig_ref() Muchos informes de syzbot apuntan a bloqueos suaves en batadv_purge_orig_ref() [1] Se desconoce la causa raíz, pero podemos evitar gastar demasiado pasar tiempo allí y tal vez obtener informes más interesantes. [1] perro guardián: ERROR: bloqueo suave - ¡CPU#0 bloqueada durante 27 segundos! [kworker/u4:6:621] Módulos vinculados en: sello de evento irq: 6182794 hardirqs habilitados por última vez en (6182793): [] __local_bh_enable_ip+0x224/0x44c kernel/softirq.c:386 hardirqs deshabilitados por última vez en (6182794) : [] __el1_irq arch/arm64/kernel/entry-common.c:533 [inline] hardirqs deshabilitado por última vez en (6182794): [] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common .c:551 softirqs habilitado por última vez en (6182792): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs habilitado por última vez en (6182792): [] batadv_purge_orig_ref+0x114c/0x122 8 netos/ batman-adv/originator.c:1287 softirqs deshabilitados por última vez en (6182790): [] spin_lock_bh include/linux/spinlock.h:356 [inline] softirqs deshabilitados por última vez en (6182790): [] batadv_purge_orig_ref+ 0x164/0x1228 net/batman-adv/originator.c:1271 CPU: 0 PID: 621 Comm: kworker/u4:6 No contaminado 6.8.0-rc7-syzkaller-g707081b61156 #0 Nombre de hardware: Google Google Compute Engine/Google Compute Motor, BIOS Google 29/02/2024 Cola de trabajo: bat_events batadv_purge_orig pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc: debería_resched arch/arm64/include/asm/preempt.h:79 [en línea] pc: __local_bh_enable_ip+0x228/0x44c kernel/softirq.c:388 lr: __local_bh_enable_ip+0x224/0x44c kernel/softirq.c:386 sp: ffff800099007970 x29: ffff800099007980 x28: 018fce1bd x27: dfff800000000000 x26: ffff0000d2620008 x25: ffff0000c7e70de8 x24 : 0000000000000001 x23: 1fffe00018e57781 x22: dfff800000000000 x21: ffff80008aab71c4 x20: ffff0001b40136c0 x19: ffff0000c72bbc08 x18: a817bb0 x17: ffff800125414000 x16: ffff80008032116c x15: 0000000000000001 x14: 1fffe0001ee9d610 x13: 0000000000000000 x12: 0000000000000000 3 x11: 0000000000000000 x10: 0000000000ff0100 x9: 0000000000000000 x8: 00000000005e5789 x7: ffff80008aab61dc x6: 0000000000000000 x5: 0000000000000000 x4: 0000000000000001 x3: 00000000000000000 x2: 0000000000000006 x1: 00000000000080 x0: ffff800125414000 Rastreo de llamadas: __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:27 [en línea] arch_local_irq_enable arch/arm64/include /asm/irqflags.h:49 [en línea] __local_bh_enable_ip+0x228/0x44c kernel/softirq.c: 386 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h: 167 [en línea] 210 spin_unlock_bh include/linux/spinlock.h:396 [en línea] batadv_purge_orig_ref+0x114c/0x1228 net/batman-adv/originator.c:1287 batadv_purge_orig+0x20/0x70 net/batman-adv/originator.c:1300 Process_one_work+0x694/0x120 4 kernel/workqueue.c:2633 Process_scheduled_works kernel/workqueue.c:2706 [en línea] trabajador_thread+0x938/0xef4 kernel/workqueue.c:2787 kthread+0x288/0x310 kernel/kthread.c:388 ret_from_fork+0x10/0x20 arch/arm64 /kernel/entry.S:860 Envío de NMI desde la CPU 0 a las CPU 1: rastreo de NMI para la CPU 1 CPU: 1 PID: 0 Comm: swapper/1 No contaminado 6.8.0-rc7-syzkaller-g707081b61156 #0 Nombre de hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 29/02/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc: arch_local_irq_enable+0x8/0xc arch/arm64/include/asm /irqflags.h:51 lr: default_idle_call+0xf8/0x128 kernel/sched/idle.c:103 sp: ffff800093a17d30 x29: ffff800093a17d30 x28: dfff800000000000 x27: 1ffff00012742fb4 x26: ffff80008ec9d000 x25: 0000000000000000 x24: 0000000000000002 x23: 1ffff00011d93a74 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\"semver\", \"lessThanOrEqual\": \"6.9.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/batman-adv/originator.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/79636f636126775436a11ee9cf00a9253a33ac11\"}, {\"url\": \"https://git.kernel.org/stable/c/154e3f862ba33675cf3f4abf0a0a309a89df87d2\"}, {\"url\": \"https://git.kernel.org/stable/c/82cdea8f3af1e36543c937df963d108c60bea030\"}, {\"url\": \"https://git.kernel.org/stable/c/92176caf9896572f00e741a93cecc0ef1172da07\"}, {\"url\": \"https://git.kernel.org/stable/c/fed7914858a1f1f3e6350bb0f620d6ef15107d16\"}, {\"url\": \"https://git.kernel.org/stable/c/2685008a5f9a636434a8508419cee8158a2f52c8\"}, {\"url\": \"https://git.kernel.org/stable/c/ae7f3cffe86aea3da0e8e079525a1ae619b8862a\"}, {\"url\": \"https://git.kernel.org/stable/c/40dc8ab605894acae1473e434944924a22cfaaa0\"}], \"x_generator\": {\"engine\": \"bippy-9e1c9544281a\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbatman-adv: bypass empty buckets in batadv_purge_orig_ref()\\n\\nMany syzbot reports are pointing to soft lockups in\\nbatadv_purge_orig_ref() [1]\\n\\nRoot cause is unknown, but we can avoid spending too much\\ntime there and perhaps get more interesting reports.\\n\\n[1]\\n\\nwatchdog: BUG: soft lockup - CPU#0 stuck for 27s! [kworker/u4:6:621]\\nModules linked in:\\nirq event stamp: 6182794\\n hardirqs last  enabled at (6182793): [<ffff8000801dae10>] __local_bh_enable_ip+0x224/0x44c kernel/softirq.c:386\\n hardirqs last disabled at (6182794): [<ffff80008ad66a78>] __el1_irq arch/arm64/kernel/entry-common.c:533 [inline]\\n hardirqs last disabled at (6182794): [<ffff80008ad66a78>] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:551\\n softirqs last  enabled at (6182792): [<ffff80008aab71c4>] spin_unlock_bh include/linux/spinlock.h:396 [inline]\\n softirqs last  enabled at (6182792): [<ffff80008aab71c4>] batadv_purge_orig_ref+0x114c/0x1228 net/batman-adv/originator.c:1287\\n softirqs last disabled at (6182790): [<ffff80008aab61dc>] spin_lock_bh include/linux/spinlock.h:356 [inline]\\n softirqs last disabled at (6182790): [<ffff80008aab61dc>] batadv_purge_orig_ref+0x164/0x1228 net/batman-adv/originator.c:1271\\nCPU: 0 PID: 621 Comm: kworker/u4:6 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024\\nWorkqueue: bat_events batadv_purge_orig\\npstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\\n pc : should_resched arch/arm64/include/asm/preempt.h:79 [inline]\\n pc : __local_bh_enable_ip+0x228/0x44c kernel/softirq.c:388\\n lr : __local_bh_enable_ip+0x224/0x44c kernel/softirq.c:386\\nsp : ffff800099007970\\nx29: ffff800099007980 x28: 1fffe00018fce1bd x27: dfff800000000000\\nx26: ffff0000d2620008 x25: ffff0000c7e70de8 x24: 0000000000000001\\nx23: 1fffe00018e57781 x22: dfff800000000000 x21: ffff80008aab71c4\\nx20: ffff0001b40136c0 x19: ffff0000c72bbc08 x18: 1fffe0001a817bb0\\nx17: ffff800125414000 x16: ffff80008032116c x15: 0000000000000001\\nx14: 1fffe0001ee9d610 x13: 0000000000000000 x12: 0000000000000003\\nx11: 0000000000000000 x10: 0000000000ff0100 x9 : 0000000000000000\\nx8 : 00000000005e5789 x7 : ffff80008aab61dc x6 : 0000000000000000\\nx5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000\\nx2 : 0000000000000006 x1 : 0000000000000080 x0 : ffff800125414000\\nCall trace:\\n  __daif_local_irq_enable arch/arm64/include/asm/irqflags.h:27 [inline]\\n  arch_local_irq_enable arch/arm64/include/asm/irqflags.h:49 [inline]\\n  __local_bh_enable_ip+0x228/0x44c kernel/softirq.c:386\\n  __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:167 [inline]\\n  _raw_spin_unlock_bh+0x3c/0x4c kernel/locking/spinlock.c:210\\n  spin_unlock_bh include/linux/spinlock.h:396 [inline]\\n  batadv_purge_orig_ref+0x114c/0x1228 net/batman-adv/originator.c:1287\\n  batadv_purge_orig+0x20/0x70 net/batman-adv/originator.c:1300\\n  process_one_work+0x694/0x1204 kernel/workqueue.c:2633\\n  process_scheduled_works kernel/workqueue.c:2706 [inline]\\n  worker_thread+0x938/0xef4 kernel/workqueue.c:2787\\n  kthread+0x288/0x310 kernel/kthread.c:388\\n  ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860\\nSending NMI from CPU 0 to CPUs 1:\\nNMI backtrace for cpu 1\\nCPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024\\npstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\\n pc : arch_local_irq_enable+0x8/0xc arch/arm64/include/asm/irqflags.h:51\\n lr : default_idle_call+0xf8/0x128 kernel/sched/idle.c:103\\nsp : ffff800093a17d30\\nx29: ffff800093a17d30 x28: dfff800000000000 x27: 1ffff00012742fb4\\nx26: ffff80008ec9d000 x25: 0000000000000000 x24: 0000000000000002\\nx23: 1ffff00011d93a74 x22: ffff80008ec9d3a0 x21: 0000000000000000\\nx20: ffff0000c19dbc00 x19: ffff8000802d0fd8 x18: 1fffe00036804396\\nx17: ffff80008ec9d000 x16: ffff8000802d089c x15: 0000000000000001\\n---truncated---\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-11-05T09:34:25.971Z\"}}}",
         cveMetadata: "{\"cveId\": \"CVE-2024-40981\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-11-05T09:34:25.971Z\", \"dateReserved\": \"2024-07-12T12:17:45.604Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-07-12T12:32:16.277Z\", \"assignerShortName\": \"Linux\"}",
         dataType: "CVE_RECORD",
         dataVersion: "5.1",
      },
   },
}


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