cve-2021-47595
Vulnerability from cvelistv5
Published
2024-06-19 14:53
Modified
2024-12-19 07:45
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net/sched: sch_ets: don't remove idle classes from the round-robin list Shuang reported that the following script: 1) tc qdisc add dev ddd0 handle 10: parent 1: ets bands 8 strict 4 priomap 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 2) mausezahn ddd0 -A 10.10.10.1 -B 10.10.10.2 -c 0 -a own -b 00:c1:a0:c1:a0:00 -t udp & 3) tc qdisc change dev ddd0 handle 10: ets bands 4 strict 2 quanta 2500 2500 priomap 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 crashes systematically when line 2) is commented: list_del corruption, ffff8e028404bd30->next is LIST_POISON1 (dead000000000100) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:47! invalid opcode: 0000 [#1] PREEMPT SMP NOPTI CPU: 0 PID: 954 Comm: tc Not tainted 5.16.0-rc4+ #478 Hardware name: Red Hat KVM, BIOS 1.11.1-4.module+el8.1.0+4066+0f1aadab 04/01/2014 RIP: 0010:__list_del_entry_valid.cold.1+0x12/0x47 Code: fe ff 0f 0b 48 89 c1 4c 89 c6 48 c7 c7 08 42 1b 87 e8 1d c5 fe ff 0f 0b 48 89 fe 48 89 c2 48 c7 c7 98 42 1b 87 e8 09 c5 fe ff <0f> 0b 48 c7 c7 48 43 1b 87 e8 fb c4 fe ff 0f 0b 48 89 f2 48 89 fe RSP: 0018:ffffae46807a3888 EFLAGS: 00010246 RAX: 000000000000004e RBX: 0000000000000007 RCX: 0000000000000202 RDX: 0000000000000000 RSI: ffffffff871ac536 RDI: 00000000ffffffff RBP: ffffae46807a3a10 R08: 0000000000000000 R09: c0000000ffff7fff R10: 0000000000000001 R11: ffffae46807a36a8 R12: ffff8e028404b800 R13: ffff8e028404bd30 R14: dead000000000100 R15: ffff8e02fafa2400 FS: 00007efdc92e4480(0000) GS:ffff8e02fb600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000682f48 CR3: 00000001058be000 CR4: 0000000000350ef0 Call Trace: <TASK> ets_qdisc_change+0x58b/0xa70 [sch_ets] tc_modify_qdisc+0x323/0x880 rtnetlink_rcv_msg+0x169/0x4a0 netlink_rcv_skb+0x50/0x100 netlink_unicast+0x1a5/0x280 netlink_sendmsg+0x257/0x4d0 sock_sendmsg+0x5b/0x60 ____sys_sendmsg+0x1f2/0x260 ___sys_sendmsg+0x7c/0xc0 __sys_sendmsg+0x57/0xa0 do_syscall_64+0x3a/0x80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7efdc8031338 Code: 89 02 48 c7 c0 ff ff ff ff eb b5 0f 1f 80 00 00 00 00 f3 0f 1e fa 48 8d 05 25 43 2c 00 8b 00 85 c0 75 17 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 41 54 41 89 d4 55 RSP: 002b:00007ffdf1ce9828 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000061b37a97 RCX: 00007efdc8031338 RDX: 0000000000000000 RSI: 00007ffdf1ce9890 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000001 R09: 000000000078a940 R10: 000000000000000c R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000688880 R14: 0000000000000000 R15: 0000000000000000 </TASK> Modules linked in: sch_ets sch_tbf dummy rfkill iTCO_wdt iTCO_vendor_support intel_rapl_msr intel_rapl_common joydev pcspkr i2c_i801 virtio_balloon i2c_smbus lpc_ich ip_tables xfs libcrc32c crct10dif_pclmul crc32_pclmul crc32c_intel serio_raw ghash_clmulni_intel ahci libahci libata virtio_blk virtio_console virtio_net net_failover failover sunrpc dm_mirror dm_region_hash dm_log dm_mod [last unloaded: sch_ets] ---[ end trace f35878d1912655c2 ]--- RIP: 0010:__list_del_entry_valid.cold.1+0x12/0x47 Code: fe ff 0f 0b 48 89 c1 4c 89 c6 48 c7 c7 08 42 1b 87 e8 1d c5 fe ff 0f 0b 48 89 fe 48 89 c2 48 c7 c7 98 42 1b 87 e8 09 c5 fe ff <0f> 0b 48 c7 c7 48 43 1b 87 e8 fb c4 fe ff 0f 0b 48 89 f2 48 89 fe RSP: 0018:ffffae46807a3888 EFLAGS: 00010246 RAX: 000000000000004e RBX: 0000000000000007 RCX: 0000000000000202 RDX: 0000000000000000 RSI: ffffffff871ac536 RDI: 00000000ffffffff RBP: ffffae46807a3a10 R08: 0000000000000000 R09: c0000000ffff7fff R10: 0000000000000001 R11: ffffae46807a36a8 R12: ffff8e028404b800 R13: ffff8e028404bd30 R14: dead000000000100 R15: ffff8e02fafa2400 FS: 00007efdc92e4480(0000) GS:ffff8e02fb600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000 ---truncated---
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/491c1253441e2fdc8f6a6f4976e3f13440419b7aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/81fbdd45652d8605a029e78ef14a6aaa529c4e72Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c062f2a0b04d86c5b8c9d973bea43493eaca3d32Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/491c1253441e2fdc8f6a6f4976e3f13440419b7aPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/81fbdd45652d8605a029e78ef14a6aaa529c4e72Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c062f2a0b04d86c5b8c9d973bea43493eaca3d32Patch
Impacted products
Vendor Product Version
Linux Linux Version: ae2659d2c670252759ee9c823c4e039c0e05a6f2
Version: e25bdbc7e951ae5728fee1f4c09485df113d013c
Version: de6d25924c2a8c2988c6a385990cafbe742061bf
 Create a notification for this product.
   Linux Linux Version: 5.10.83   ≤
Version: 5.15.6   ≤
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{
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                "id": "CVE-2021-47595",
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                    "Automatable": "no"
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                    "Technical Impact": "partial"
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                "role": "CISA Coordinator",
                "timestamp": "2024-06-21T14:04:57.060953Z",
                "version": "2.0.3"
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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    "cna": {
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          "product": "Linux",
          "programFiles": [
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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      "descriptions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: sch_ets: don\u0027t remove idle classes from the round-robin list\n\nShuang reported that the following script:\n\n 1) tc qdisc add dev ddd0 handle 10: parent 1: ets bands 8 strict 4 priomap 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7\n 2) mausezahn ddd0  -A 10.10.10.1 -B 10.10.10.2 -c 0 -a own -b 00:c1:a0:c1:a0:00 -t udp \u0026\n 3) tc qdisc change dev ddd0 handle 10: ets bands 4 strict 2 quanta 2500 2500 priomap 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3\n\ncrashes systematically when line 2) is commented:\n\n list_del corruption, ffff8e028404bd30-\u003enext is LIST_POISON1 (dead000000000100)\n ------------[ cut here ]------------\n kernel BUG at lib/list_debug.c:47!\n invalid opcode: 0000 [#1] PREEMPT SMP NOPTI\n CPU: 0 PID: 954 Comm: tc Not tainted 5.16.0-rc4+ #478\n Hardware name: Red Hat KVM, BIOS 1.11.1-4.module+el8.1.0+4066+0f1aadab 04/01/2014\n RIP: 0010:__list_del_entry_valid.cold.1+0x12/0x47\n Code: fe ff 0f 0b 48 89 c1 4c 89 c6 48 c7 c7 08 42 1b 87 e8 1d c5 fe ff 0f 0b 48 89 fe 48 89 c2 48 c7 c7 98 42 1b 87 e8 09 c5 fe ff \u003c0f\u003e 0b 48 c7 c7 48 43 1b 87 e8 fb c4 fe ff 0f 0b 48 89 f2 48 89 fe\n RSP: 0018:ffffae46807a3888 EFLAGS: 00010246\n RAX: 000000000000004e RBX: 0000000000000007 RCX: 0000000000000202\n RDX: 0000000000000000 RSI: ffffffff871ac536 RDI: 00000000ffffffff\n RBP: ffffae46807a3a10 R08: 0000000000000000 R09: c0000000ffff7fff\n R10: 0000000000000001 R11: ffffae46807a36a8 R12: ffff8e028404b800\n R13: ffff8e028404bd30 R14: dead000000000100 R15: ffff8e02fafa2400\n FS:  00007efdc92e4480(0000) GS:ffff8e02fb600000(0000) knlGS:0000000000000000\n CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 0000000000682f48 CR3: 00000001058be000 CR4: 0000000000350ef0\n Call Trace:\n  \u003cTASK\u003e\n  ets_qdisc_change+0x58b/0xa70 [sch_ets]\n  tc_modify_qdisc+0x323/0x880\n  rtnetlink_rcv_msg+0x169/0x4a0\n  netlink_rcv_skb+0x50/0x100\n  netlink_unicast+0x1a5/0x280\n  netlink_sendmsg+0x257/0x4d0\n  sock_sendmsg+0x5b/0x60\n  ____sys_sendmsg+0x1f2/0x260\n  ___sys_sendmsg+0x7c/0xc0\n  __sys_sendmsg+0x57/0xa0\n  do_syscall_64+0x3a/0x80\n  entry_SYSCALL_64_after_hwframe+0x44/0xae\n RIP: 0033:0x7efdc8031338\n Code: 89 02 48 c7 c0 ff ff ff ff eb b5 0f 1f 80 00 00 00 00 f3 0f 1e fa 48 8d 05 25 43 2c 00 8b 00 85 c0 75 17 b8 2e 00 00 00 0f 05 \u003c48\u003e 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 41 54 41 89 d4 55\n RSP: 002b:00007ffdf1ce9828 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\n RAX: ffffffffffffffda RBX: 0000000061b37a97 RCX: 00007efdc8031338\n RDX: 0000000000000000 RSI: 00007ffdf1ce9890 RDI: 0000000000000003\n RBP: 0000000000000000 R08: 0000000000000001 R09: 000000000078a940\n R10: 000000000000000c R11: 0000000000000246 R12: 0000000000000001\n R13: 0000000000688880 R14: 0000000000000000 R15: 0000000000000000\n  \u003c/TASK\u003e\n Modules linked in: sch_ets sch_tbf dummy rfkill iTCO_wdt iTCO_vendor_support intel_rapl_msr intel_rapl_common joydev pcspkr i2c_i801 virtio_balloon i2c_smbus lpc_ich ip_tables xfs libcrc32c crct10dif_pclmul crc32_pclmul crc32c_intel serio_raw ghash_clmulni_intel ahci libahci libata virtio_blk virtio_console virtio_net net_failover failover sunrpc dm_mirror dm_region_hash dm_log dm_mod [last unloaded: sch_ets]\n ---[ end trace f35878d1912655c2 ]---\n RIP: 0010:__list_del_entry_valid.cold.1+0x12/0x47\n Code: fe ff 0f 0b 48 89 c1 4c 89 c6 48 c7 c7 08 42 1b 87 e8 1d c5 fe ff 0f 0b 48 89 fe 48 89 c2 48 c7 c7 98 42 1b 87 e8 09 c5 fe ff \u003c0f\u003e 0b 48 c7 c7 48 43 1b 87 e8 fb c4 fe ff 0f 0b 48 89 f2 48 89 fe\n RSP: 0018:ffffae46807a3888 EFLAGS: 00010246\n RAX: 000000000000004e RBX: 0000000000000007 RCX: 0000000000000202\n RDX: 0000000000000000 RSI: ffffffff871ac536 RDI: 00000000ffffffff\n RBP: ffffae46807a3a10 R08: 0000000000000000 R09: c0000000ffff7fff\n R10: 0000000000000001 R11: ffffae46807a36a8 R12: ffff8e028404b800\n R13: ffff8e028404bd30 R14: dead000000000100 R15: ffff8e02fafa2400\n FS:  00007efdc92e4480(0000) GS:ffff8e02fb600000(0000) knlGS:0000000000000000\n CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: 000000000\n---truncated---"
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        "dateUpdated": "2024-12-19T07:45:27.183Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
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          "url": "https://git.kernel.org/stable/c/81fbdd45652d8605a029e78ef14a6aaa529c4e72"
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      "title": "net/sched: sch_ets: don\u0027t remove idle classes from the round-robin list",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47595",
    "datePublished": "2024-06-19T14:53:57.568Z",
    "dateReserved": "2024-05-24T15:11:00.733Z",
    "dateUpdated": "2024-12-19T07:45:27.183Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47595\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-06-19T15:15:54.097\",\"lastModified\":\"2024-11-21T06:36:37.780\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/sched: sch_ets: don\u0027t remove idle classes from the round-robin list\\n\\nShuang reported that the following script:\\n\\n 1) tc qdisc add dev ddd0 handle 10: parent 1: ets bands 8 strict 4 priomap 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7\\n 2) mausezahn ddd0  -A 10.10.10.1 -B 10.10.10.2 -c 0 -a own -b 00:c1:a0:c1:a0:00 -t udp \u0026\\n 3) tc qdisc change dev ddd0 handle 10: ets bands 4 strict 2 quanta 2500 2500 priomap 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3\\n\\ncrashes systematically when line 2) is commented:\\n\\n list_del corruption, ffff8e028404bd30-\u003enext is LIST_POISON1 (dead000000000100)\\n ------------[ cut here ]------------\\n kernel BUG at lib/list_debug.c:47!\\n invalid opcode: 0000 [#1] PREEMPT SMP NOPTI\\n CPU: 0 PID: 954 Comm: tc Not tainted 5.16.0-rc4+ #478\\n Hardware name: Red Hat KVM, BIOS 1.11.1-4.module+el8.1.0+4066+0f1aadab 04/01/2014\\n RIP: 0010:__list_del_entry_valid.cold.1+0x12/0x47\\n Code: fe ff 0f 0b 48 89 c1 4c 89 c6 48 c7 c7 08 42 1b 87 e8 1d c5 fe ff 0f 0b 48 89 fe 48 89 c2 48 c7 c7 98 42 1b 87 e8 09 c5 fe ff \u003c0f\u003e 0b 48 c7 c7 48 43 1b 87 e8 fb c4 fe ff 0f 0b 48 89 f2 48 89 fe\\n RSP: 0018:ffffae46807a3888 EFLAGS: 00010246\\n RAX: 000000000000004e RBX: 0000000000000007 RCX: 0000000000000202\\n RDX: 0000000000000000 RSI: ffffffff871ac536 RDI: 00000000ffffffff\\n RBP: ffffae46807a3a10 R08: 0000000000000000 R09: c0000000ffff7fff\\n R10: 0000000000000001 R11: ffffae46807a36a8 R12: ffff8e028404b800\\n R13: ffff8e028404bd30 R14: dead000000000100 R15: ffff8e02fafa2400\\n FS:  00007efdc92e4480(0000) GS:ffff8e02fb600000(0000) knlGS:0000000000000000\\n CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n CR2: 0000000000682f48 CR3: 00000001058be000 CR4: 0000000000350ef0\\n Call Trace:\\n  \u003cTASK\u003e\\n  ets_qdisc_change+0x58b/0xa70 [sch_ets]\\n  tc_modify_qdisc+0x323/0x880\\n  rtnetlink_rcv_msg+0x169/0x4a0\\n  netlink_rcv_skb+0x50/0x100\\n  netlink_unicast+0x1a5/0x280\\n  netlink_sendmsg+0x257/0x4d0\\n  sock_sendmsg+0x5b/0x60\\n  ____sys_sendmsg+0x1f2/0x260\\n  ___sys_sendmsg+0x7c/0xc0\\n  __sys_sendmsg+0x57/0xa0\\n  do_syscall_64+0x3a/0x80\\n  entry_SYSCALL_64_after_hwframe+0x44/0xae\\n RIP: 0033:0x7efdc8031338\\n Code: 89 02 48 c7 c0 ff ff ff ff eb b5 0f 1f 80 00 00 00 00 f3 0f 1e fa 48 8d 05 25 43 2c 00 8b 00 85 c0 75 17 b8 2e 00 00 00 0f 05 \u003c48\u003e 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 41 54 41 89 d4 55\\n RSP: 002b:00007ffdf1ce9828 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\\n RAX: ffffffffffffffda RBX: 0000000061b37a97 RCX: 00007efdc8031338\\n RDX: 0000000000000000 RSI: 00007ffdf1ce9890 RDI: 0000000000000003\\n RBP: 0000000000000000 R08: 0000000000000001 R09: 000000000078a940\\n R10: 000000000000000c R11: 0000000000000246 R12: 0000000000000001\\n R13: 0000000000688880 R14: 0000000000000000 R15: 0000000000000000\\n  \u003c/TASK\u003e\\n Modules linked in: sch_ets sch_tbf dummy rfkill iTCO_wdt iTCO_vendor_support intel_rapl_msr intel_rapl_common joydev pcspkr i2c_i801 virtio_balloon i2c_smbus lpc_ich ip_tables xfs libcrc32c crct10dif_pclmul crc32_pclmul crc32c_intel serio_raw ghash_clmulni_intel ahci libahci libata virtio_blk virtio_console virtio_net net_failover failover sunrpc dm_mirror dm_region_hash dm_log dm_mod [last unloaded: sch_ets]\\n ---[ end trace f35878d1912655c2 ]---\\n RIP: 0010:__list_del_entry_valid.cold.1+0x12/0x47\\n Code: fe ff 0f 0b 48 89 c1 4c 89 c6 48 c7 c7 08 42 1b 87 e8 1d c5 fe ff 0f 0b 48 89 fe 48 89 c2 48 c7 c7 98 42 1b 87 e8 09 c5 fe ff \u003c0f\u003e 0b 48 c7 c7 48 43 1b 87 e8 fb c4 fe ff 0f 0b 48 89 f2 48 89 fe\\n RSP: 0018:ffffae46807a3888 EFLAGS: 00010246\\n RAX: 000000000000004e RBX: 0000000000000007 RCX: 0000000000000202\\n RDX: 0000000000000000 RSI: ffffffff871ac536 RDI: 00000000ffffffff\\n RBP: ffffae46807a3a10 R08: 0000000000000000 R09: c0000000ffff7fff\\n R10: 0000000000000001 R11: ffffae46807a36a8 R12: ffff8e028404b800\\n R13: ffff8e028404bd30 R14: dead000000000100 R15: ffff8e02fafa2400\\n FS:  00007efdc92e4480(0000) GS:ffff8e02fb600000(0000) knlGS:0000000000000000\\n CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n CR2: 000000000\\n---truncated---\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: net/sched: sch_ets: no elimine las clases inactivas de la lista de turnos Shuang inform\u00f3 que el siguiente script: 1) tc qdisc add dev ddd0 handle 10: parent 1: ets bandas 8 estricto 4 priomap 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 2) mausezahn ddd0 -A 10.10.10.1 -B 10.10.10.2 -c 0 -a propio -b 00:c1:a0: c1:a0:00 -t udp \u0026amp; 3) tc qdisc change dev ddd0 handle 10: ets bands 4 estricto 2 cuantos 2500 2500 priomap 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 falla sistem\u00e1ticamente cuando la l\u00ednea 2) se comenta: corrupci\u00f3n list_del, ffff8e028404bd30-\u0026gt;el siguiente es LIST_POISON1 (dead000000000100) ------------[ cortar aqu\u00ed ]------------ ERROR del kernel en lib/list_debug. c:47! c\u00f3digo de operaci\u00f3n no v\u00e1lido: 0000 [#1] PREEMPT SMP NOPTI CPU: 0 PID: 954 Comunicaciones: tc Not tainted 5.16.0-rc4+ #478 Nombre de hardware: Red Hat KVM, BIOS 1.11.1-4.module+el8.1.0+4066 +0f1aadab 01/04/2014 RIP: 0010:__list_del_entry_valid.cold.1+0x12/0x47 C\u00f3digo: fe ff 0f 0b 48 89 c1 4c 89 c6 48 c7 c7 08 42 1b 87 e8 1d c5 fe ff 0f 0b 48 89 fe 4 8 89 c2 48 c7 c7 98 42 1b 87 e8 09 c5 fe ff \u0026lt;0f\u0026gt; 0b 48 c7 c7 48 43 1b 87 e8 fb c4 fe ff 0f 0b 48 89 f2 48 89 fe RSP: 0018:ffffae46807a3888 EFLAGS: 246 RAX: 000000000000004eRBX : 0000000000000007 RCX: 0000000000000202 RDX: 0000000000000000 RSI: ffffffff871ac536 RDI: 00000000ffffffff RBP: ffffae46807a3a10 R08: 00000000000 00000 R09: c0000000ffff7fff R10: 00000000000000001 R11: ffffae46807a36a8 R12: ffff8e028404b800 R13: ffff8e028404bd30 R14: dead000000000100 R15: e02fafa2400 FS: 00007efdc92e4480(0000) GS:ffff8e02fb600000 (0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000682f48 CR3: 00000001058be000 CR4: 000000000035 0ef0 Seguimiento de llamadas:  ets_qdisc_change+0x58b/0xa70 [sch_ets] tc_modify_qdisc+0x323/0x880 rtnetlink_rcv_msg+0x169/ 0x4a0 netlink_rcv_skb+0x50/0x100 netlink_unicast+0x1a5/0x280 netlink_sendmsg+0x257/0x4d0 sock_sendmsg+0x5b/0x60 ____sys_sendmsg+0x1f2/0x260 ___sys_sendmsg+0x7c/0xc0 __sys_sendmsg+0x57/0xa0 do_syscall_64+0x3a/0x80 Entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033: 0x7efdc8031338 C\u00f3digo: 89 02 48 c7 c0 ff ff ff ff eb b5 0f 1f 80 00 00 00 00 f3 0f 1e fa 48 8d 05 25 43 2c 00 8b 00 85 c0 75 17 b8 2e 00 00 0f 05 \u0026lt;48\u0026gt; 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 41 54 41 89 d4 55 RSP: 002b:00007ffdf1ce9828 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: de RBX: 0000000061b37a97 RCX: 00007efdc8031338 RDX: 0000000000000000 RSI: 00007ffdf1ce9890 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000001 R09: 000000000078a940 R10: 000000000000000c R11: 00000000000000246 R12: 0000000000000001 R 13: 0000000000688880 R14: 0000000000000000 R15: 0000000000000000  M\u00f3dulos vinculados en: sch_ets sch_tbf dummy rfkill iTCO_wdt iTCO_vendor_support intel_rapl_msr intel_rapl_common pcs pkr i2c_i801 virtio_balloon i2c_smbus lpc_ich ip_tables xfs libcrc32c crct10dif_pclmul crc32_pclmul crc32c_intel serio_raw ghash_clmulni_intel ahci libahci libata virtio_blk virtio_console virtio_net net_failover failover sunrpc dm_mirror dm_region_hash dm_log dm_mod [\u00faltima descarga: sch_ets] ---[ fin de seguimiento f35878d191 2655c2 ]--- RIP: 0010:__list_del_entry_valid.cold.1+0x12/0x47 C\u00f3digo: fe ff 0f 0b 48 89 c1 4c 89 c6 48 c7 c7 08 42 1b 87 e8 1d c5 fe ff 0f 0b 48 89 fe 48 89 c2 48 c7 c7 98 42 1b 87 e8 09 c5 fe ff \u0026lt;0f\u0026gt; 0b 48 c7 c7 48 43 1b 87 e8 fb c4 fe ff 0f 0b 48 89 f2 48 89 fe RSP: 0018:ffffae46807a3888 EFLAGS: 00010246 RAX: 000000000000004e RBX: 0000000000000007 RCX 000 0000000000202 RDX: 0000000000000000 RSI: ffffffff871ac536 RDI: 00000000ffffffff RBP: ffffae46807a3a10 R08: 0000000000000000 R09: c0000000ffff7fff R10: 0000000000000001 R11: FFFFFAE46807A36A8 R12: FFFFF8E028404B800 R13: FFFF8E028404BD30 R14: Dead000000000100 R15: FFFFF8E02FAFA2400 FUT: GS: FFFF8E02FB600000 (0000) KNLGS: 000000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000 - --truncado---\"}],\"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\":\"5.10.83\",\"versionEndExcluding\":\"5.10.88\",\"matchCriteriaId\":\"8CE254F6-35BF-434F-B6CA-BDFCD944AAA4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.15.6\",\"versionEndExcluding\":\"5.15.11\",\"matchCriteriaId\":\"1A3B9E2F-A621-4129-9702-D8D427A1E747\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/491c1253441e2fdc8f6a6f4976e3f13440419b7a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/81fbdd45652d8605a029e78ef14a6aaa529c4e72\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c062f2a0b04d86c5b8c9d973bea43493eaca3d32\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/491c1253441e2fdc8f6a6f4976e3f13440419b7a\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/81fbdd45652d8605a029e78ef14a6aaa529c4e72\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c062f2a0b04d86c5b8c9d973bea43493eaca3d32\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/81fbdd45652d8605a029e78ef14a6aaa529c4e72\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/491c1253441e2fdc8f6a6f4976e3f13440419b7a\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/c062f2a0b04d86c5b8c9d973bea43493eaca3d32\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-04T05:47:40.255Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-47595\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-06-21T14:04:57.060953Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-06-21T14:05:06.575Z\"}}], \"cna\": {\"title\": \"net/sched: sch_ets: don\u0027t remove idle classes from the round-robin list\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"ae2659d2c670\", \"lessThan\": \"81fbdd45652d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e25bdbc7e951\", \"lessThan\": \"491c1253441e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"de6d25924c2a\", \"lessThan\": \"c062f2a0b04d\", \"versionType\": \"git\"}], \"programFiles\": [\"net/sched/sch_ets.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.10.83\", \"lessThan\": \"5.10.88\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"5.15.6\", \"lessThan\": \"5.15.11\", \"versionType\": \"custom\"}], \"programFiles\": [\"net/sched/sch_ets.c\"], \"defaultStatus\": \"unaffected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/81fbdd45652d8605a029e78ef14a6aaa529c4e72\"}, {\"url\": \"https://git.kernel.org/stable/c/491c1253441e2fdc8f6a6f4976e3f13440419b7a\"}, {\"url\": \"https://git.kernel.org/stable/c/c062f2a0b04d86c5b8c9d973bea43493eaca3d32\"}], \"x_generator\": {\"engine\": \"bippy-a5840b7849dd\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/sched: sch_ets: don\u0027t remove idle classes from the round-robin list\\n\\nShuang reported that the following script:\\n\\n 1) tc qdisc add dev ddd0 handle 10: parent 1: ets bands 8 strict 4 priomap 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7\\n 2) mausezahn ddd0  -A 10.10.10.1 -B 10.10.10.2 -c 0 -a own -b 00:c1:a0:c1:a0:00 -t udp \u0026\\n 3) tc qdisc change dev ddd0 handle 10: ets bands 4 strict 2 quanta 2500 2500 priomap 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3\\n\\ncrashes systematically when line 2) is commented:\\n\\n list_del corruption, ffff8e028404bd30-\u003enext is LIST_POISON1 (dead000000000100)\\n ------------[ cut here ]------------\\n kernel BUG at lib/list_debug.c:47!\\n invalid opcode: 0000 [#1] PREEMPT SMP NOPTI\\n CPU: 0 PID: 954 Comm: tc Not tainted 5.16.0-rc4+ #478\\n Hardware name: Red Hat KVM, BIOS 1.11.1-4.module+el8.1.0+4066+0f1aadab 04/01/2014\\n RIP: 0010:__list_del_entry_valid.cold.1+0x12/0x47\\n Code: fe ff 0f 0b 48 89 c1 4c 89 c6 48 c7 c7 08 42 1b 87 e8 1d c5 fe ff 0f 0b 48 89 fe 48 89 c2 48 c7 c7 98 42 1b 87 e8 09 c5 fe ff \u003c0f\u003e 0b 48 c7 c7 48 43 1b 87 e8 fb c4 fe ff 0f 0b 48 89 f2 48 89 fe\\n RSP: 0018:ffffae46807a3888 EFLAGS: 00010246\\n RAX: 000000000000004e RBX: 0000000000000007 RCX: 0000000000000202\\n RDX: 0000000000000000 RSI: ffffffff871ac536 RDI: 00000000ffffffff\\n RBP: ffffae46807a3a10 R08: 0000000000000000 R09: c0000000ffff7fff\\n R10: 0000000000000001 R11: ffffae46807a36a8 R12: ffff8e028404b800\\n R13: ffff8e028404bd30 R14: dead000000000100 R15: ffff8e02fafa2400\\n FS:  00007efdc92e4480(0000) GS:ffff8e02fb600000(0000) knlGS:0000000000000000\\n CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n CR2: 0000000000682f48 CR3: 00000001058be000 CR4: 0000000000350ef0\\n Call Trace:\\n  \u003cTASK\u003e\\n  ets_qdisc_change+0x58b/0xa70 [sch_ets]\\n  tc_modify_qdisc+0x323/0x880\\n  rtnetlink_rcv_msg+0x169/0x4a0\\n  netlink_rcv_skb+0x50/0x100\\n  netlink_unicast+0x1a5/0x280\\n  netlink_sendmsg+0x257/0x4d0\\n  sock_sendmsg+0x5b/0x60\\n  ____sys_sendmsg+0x1f2/0x260\\n  ___sys_sendmsg+0x7c/0xc0\\n  __sys_sendmsg+0x57/0xa0\\n  do_syscall_64+0x3a/0x80\\n  entry_SYSCALL_64_after_hwframe+0x44/0xae\\n RIP: 0033:0x7efdc8031338\\n Code: 89 02 48 c7 c0 ff ff ff ff eb b5 0f 1f 80 00 00 00 00 f3 0f 1e fa 48 8d 05 25 43 2c 00 8b 00 85 c0 75 17 b8 2e 00 00 00 0f 05 \u003c48\u003e 3d 00 f0 ff ff 77 58 c3 0f 1f 80 00 00 00 00 41 54 41 89 d4 55\\n RSP: 002b:00007ffdf1ce9828 EFLAGS: 00000246 ORIG_RAX: 000000000000002e\\n RAX: ffffffffffffffda RBX: 0000000061b37a97 RCX: 00007efdc8031338\\n RDX: 0000000000000000 RSI: 00007ffdf1ce9890 RDI: 0000000000000003\\n RBP: 0000000000000000 R08: 0000000000000001 R09: 000000000078a940\\n R10: 000000000000000c R11: 0000000000000246 R12: 0000000000000001\\n R13: 0000000000688880 R14: 0000000000000000 R15: 0000000000000000\\n  \u003c/TASK\u003e\\n Modules linked in: sch_ets sch_tbf dummy rfkill iTCO_wdt iTCO_vendor_support intel_rapl_msr intel_rapl_common joydev pcspkr i2c_i801 virtio_balloon i2c_smbus lpc_ich ip_tables xfs libcrc32c crct10dif_pclmul crc32_pclmul crc32c_intel serio_raw ghash_clmulni_intel ahci libahci libata virtio_blk virtio_console virtio_net net_failover failover sunrpc dm_mirror dm_region_hash dm_log dm_mod [last unloaded: sch_ets]\\n ---[ end trace f35878d1912655c2 ]---\\n RIP: 0010:__list_del_entry_valid.cold.1+0x12/0x47\\n Code: fe ff 0f 0b 48 89 c1 4c 89 c6 48 c7 c7 08 42 1b 87 e8 1d c5 fe ff 0f 0b 48 89 fe 48 89 c2 48 c7 c7 98 42 1b 87 e8 09 c5 fe ff \u003c0f\u003e 0b 48 c7 c7 48 43 1b 87 e8 fb c4 fe ff 0f 0b 48 89 f2 48 89 fe\\n RSP: 0018:ffffae46807a3888 EFLAGS: 00010246\\n RAX: 000000000000004e RBX: 0000000000000007 RCX: 0000000000000202\\n RDX: 0000000000000000 RSI: ffffffff871ac536 RDI: 00000000ffffffff\\n RBP: ffffae46807a3a10 R08: 0000000000000000 R09: c0000000ffff7fff\\n R10: 0000000000000001 R11: ffffae46807a36a8 R12: ffff8e028404b800\\n R13: ffff8e028404bd30 R14: dead000000000100 R15: ffff8e02fafa2400\\n FS:  00007efdc92e4480(0000) GS:ffff8e02fb600000(0000) knlGS:0000000000000000\\n CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n CR2: 000000000\\n---truncated---\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2024-06-19T14:53:57.568Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-47595\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-08-04T05:47:40.255Z\", \"dateReserved\": \"2024-05-24T15:11:00.733Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-06-19T14:53:57.568Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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