CVE-2022-48719 (GCVE-0-2022-48719)
Vulnerability from cvelistv5
Published
2024-06-20 11:13
Modified
2025-05-04 08:21
Severity ?
VLAI Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
net, neigh: Do not trigger immediate probes on NUD_FAILED from neigh_managed_work
syzkaller was able to trigger a deadlock for NTF_MANAGED entries [0]:
kworker/0:16/14617 is trying to acquire lock:
ffffffff8d4dd370 (&tbl->lock){++-.}-{2:2}, at: ___neigh_create+0x9e1/0x2990 net/core/neighbour.c:652
[...]
but task is already holding lock:
ffffffff8d4dd370 (&tbl->lock){++-.}-{2:2}, at: neigh_managed_work+0x35/0x250 net/core/neighbour.c:1572
The neighbor entry turned to NUD_FAILED state, where __neigh_event_send()
triggered an immediate probe as per commit cd28ca0a3dd1 ("neigh: reduce
arp latency") via neigh_probe() given table lock was held.
One option to fix this situation is to defer the neigh_probe() back to
the neigh_timer_handler() similarly as pre cd28ca0a3dd1. For the case
of NTF_MANAGED, this deferral is acceptable given this only happens on
actual failure state and regular / expected state is NUD_VALID with the
entry already present.
The fix adds a parameter to __neigh_event_send() in order to communicate
whether immediate probe is allowed or disallowed. Existing call-sites
of neigh_event_send() default as-is to immediate probe. However, the
neigh_managed_work() disables it via use of neigh_event_send_probe().
[0] <TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
print_deadlock_bug kernel/locking/lockdep.c:2956 [inline]
check_deadlock kernel/locking/lockdep.c:2999 [inline]
validate_chain kernel/locking/lockdep.c:3788 [inline]
__lock_acquire.cold+0x149/0x3ab kernel/locking/lockdep.c:5027
lock_acquire kernel/locking/lockdep.c:5639 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5604
__raw_write_lock_bh include/linux/rwlock_api_smp.h:202 [inline]
_raw_write_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:334
___neigh_create+0x9e1/0x2990 net/core/neighbour.c:652
ip6_finish_output2+0x1070/0x14f0 net/ipv6/ip6_output.c:123
__ip6_finish_output net/ipv6/ip6_output.c:191 [inline]
__ip6_finish_output+0x61e/0xe90 net/ipv6/ip6_output.c:170
ip6_finish_output+0x32/0x200 net/ipv6/ip6_output.c:201
NF_HOOK_COND include/linux/netfilter.h:296 [inline]
ip6_output+0x1e4/0x530 net/ipv6/ip6_output.c:224
dst_output include/net/dst.h:451 [inline]
NF_HOOK include/linux/netfilter.h:307 [inline]
ndisc_send_skb+0xa99/0x17f0 net/ipv6/ndisc.c:508
ndisc_send_ns+0x3a9/0x840 net/ipv6/ndisc.c:650
ndisc_solicit+0x2cd/0x4f0 net/ipv6/ndisc.c:742
neigh_probe+0xc2/0x110 net/core/neighbour.c:1040
__neigh_event_send+0x37d/0x1570 net/core/neighbour.c:1201
neigh_event_send include/net/neighbour.h:470 [inline]
neigh_managed_work+0x162/0x250 net/core/neighbour.c:1574
process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307
worker_thread+0x657/0x1110 kernel/workqueue.c:2454
kthread+0x2e9/0x3a0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
</TASK>
References
Impacted products
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For the case\\nof NTF_MANAGED, this deferral is acceptable given this only happens on\\nactual failure state and regular / expected state is NUD_VALID with the\\nentry already present.\\n\\nThe fix adds a parameter to __neigh_event_send() in order to communicate\\nwhether immediate probe is allowed or disallowed. Existing call-sites\\nof neigh_event_send() default as-is to immediate probe. However, the\\nneigh_managed_work() disables it via use of neigh_event_send_probe().\\n\\n[0] \u003cTASK\u003e\\n __dump_stack lib/dump_stack.c:88 [inline]\\n dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106\\n print_deadlock_bug kernel/locking/lockdep.c:2956 [inline]\\n check_deadlock kernel/locking/lockdep.c:2999 [inline]\\n validate_chain kernel/locking/lockdep.c:3788 [inline]\\n __lock_acquire.cold+0x149/0x3ab kernel/locking/lockdep.c:5027\\n lock_acquire kernel/locking/lockdep.c:5639 [inline]\\n lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5604\\n __raw_write_lock_bh include/linux/rwlock_api_smp.h:202 [inline]\\n _raw_write_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:334\\n ___neigh_create+0x9e1/0x2990 net/core/neighbour.c:652\\n ip6_finish_output2+0x1070/0x14f0 net/ipv6/ip6_output.c:123\\n __ip6_finish_output net/ipv6/ip6_output.c:191 [inline]\\n __ip6_finish_output+0x61e/0xe90 net/ipv6/ip6_output.c:170\\n ip6_finish_output+0x32/0x200 net/ipv6/ip6_output.c:201\\n NF_HOOK_COND include/linux/netfilter.h:296 [inline]\\n ip6_output+0x1e4/0x530 net/ipv6/ip6_output.c:224\\n dst_output include/net/dst.h:451 [inline]\\n NF_HOOK include/linux/netfilter.h:307 [inline]\\n ndisc_send_skb+0xa99/0x17f0 net/ipv6/ndisc.c:508\\n ndisc_send_ns+0x3a9/0x840 net/ipv6/ndisc.c:650\\n ndisc_solicit+0x2cd/0x4f0 net/ipv6/ndisc.c:742\\n neigh_probe+0xc2/0x110 net/core/neighbour.c:1040\\n __neigh_event_send+0x37d/0x1570 net/core/neighbour.c:1201\\n neigh_event_send include/net/neighbour.h:470 [inline]\\n neigh_managed_work+0x162/0x250 net/core/neighbour.c:1574\\n process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307\\n worker_thread+0x657/0x1110 kernel/workqueue.c:2454\\n kthread+0x2e9/0x3a0 kernel/kthread.c:377\\n ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295\\n \u003c/TASK\u003e\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net, neigh: no activar sondas inmediatas en NUD_FAILED desde neigh_managed_work syzkaller pudo activar un punto muerto para las entradas NTF_MANAGED [0]: kworker/0:16/14617 est\u00e1 intentando adquirir bloqueo: ffffffff8d4dd370 (\u0026amp;tbl-\u0026gt;lock){++-.}-{2:2}, en: ___neigh_create+0x9e1/0x2990 net/core/neighbour.c:652 [...] pero la tarea ya mantiene el bloqueo: ffffffff8d4dd370 (\u0026amp;tbl-\u0026gt;lock){++-.}-{2:2}, en: neigh_managed_work+0x35/0x250 net/core/neighbour.c:1572 La entrada del vecino pas\u00f3 al estado NUD_FAILED, donde __neigh_event_send() desencaden\u00f3 una Sondeo inmediato seg\u00fan el commit cd28ca0a3dd1 (\\\"relincho: reducir la latencia de arp\\\") a trav\u00e9s de neigh_probe() dado que se mantuvo el bloqueo de la tabla. Una opci\u00f3n para solucionar esta situaci\u00f3n es posponer neigh_probe() nuevamente a neigh_timer_handler() de manera similar a como se hac\u00eda antes de cd28ca0a3dd1. Para el caso de NTF_MANAGED, este aplazamiento es aceptable dado que esto solo ocurre en el estado de falla real y el estado normal/esperado es NUD_VALID con la entrada ya presente. La soluci\u00f3n agrega un par\u00e1metro a __neigh_event_send() para comunicar si se permite o no la sonda inmediata. Los sitios de llamadas existentes de neigh_event_send() est\u00e1n predeterminados tal cual para la investigaci\u00f3n inmediata. Sin embargo, neigh_managed_work() lo desactiva mediante el uso de neigh_event_send_probe(). [0] __dump_stack lib/dump_stack.c:88 [en l\u00ednea] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_deadlock_bug kernel/locking/lockdep.c:2956 [en l\u00ednea] check_deadlock kernel/locking/lockdep.c :2999 [en l\u00ednea] validar_chain kernel/locking/lockdep.c:3788 [en l\u00ednea] __lock_acquire.cold+0x149/0x3ab kernel/locking/lockdep.c:5027 lock_acquire kernel/locking/lockdep.c:5639 [en l\u00ednea] lock_acquire+0x1ab /0x510 kernel/locking/lockdep.c:5604 __raw_write_lock_bh include/linux/rwlock_api_smp.h:202 [en l\u00ednea] _raw_write_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:334 ___neigh_create+0x9e1/0x2990 net/core/neighbour.c :652 ip6_finish_output2+0x1070/0x14f0 net/ipv6/ip6_output.c:123 __ip6_finish_output net/ipv6/ip6_output.c:191 [en l\u00ednea] __ip6_finish_output+0x61e/0xe90 net/ipv6/ip6_output.c:170 poner+0x32/0x200 neto/ ipv6/ip6_output.c:201 NF_HOOK_COND include/linux/netfilter.h:296 [en l\u00ednea] ip6_output+0x1e4/0x530 net/ipv6/ip6_output.c:224 dst_output include/net/dst.h:451 [en l\u00ednea] NF_HOOK include/ linux/netfilter.h:307 [en l\u00ednea] ndisc_send_skb+0xa99/0x17f0 net/ipv6/ndisc.c:508 ndisc_send_ns+0x3a9/0x840 net/ipv6/ndisc.c:650 ndisc_solicit+0x2cd/0x4f0 net/ipv6/ndisc.c :742 neigh_probe+0xc2/0x110 net/core/neighbour.c:1040 __neigh_event_send+0x37d/0x1570 net/core/neighbour.c:1201 neigh_event_send include/net/neighbour.h:470 [en l\u00ednea] neigh_managed_work+0x162/0x250 net/ core/neighbour.c:1574 Process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307 trabajador_thread+0x657/0x1110 kernel/workqueue.c:2454 kthread+0x2e9/0x3a0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 arch/ x86/entry/entry_64.S:295 \"}],\"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\":\"CWE-667\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"5.16.8\",\"matchCriteriaId\":\"0623892A-E3E4-44E6-8A5E-39A0B47AF782\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"7BD5F8D9-54FA-4CB0-B4F0-CB0471FDDB2D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:5.17:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"E6E34B23-78B4-4516-9BD8-61B33F4AC49A\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/203a35ebb49cdce377416b0690215d3ce090d364\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/4a81f6da9cb2d1ef911131a6fd8bd15cb61fc772\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/203a35ebb49cdce377416b0690215d3ce090d364\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/4a81f6da9cb2d1ef911131a6fd8bd15cb61fc772\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]}]}}",
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"containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/203a35ebb49cdce377416b0690215d3ce090d364\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/4a81f6da9cb2d1ef911131a6fd8bd15cb61fc772\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-03T15:24:59.987Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-48719\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T17:11:19.414078Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:26.194Z\"}}], \"cna\": {\"title\": \"net, neigh: Do not trigger immediate probes on NUD_FAILED from neigh_managed_work\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"7482e3841d520a368426ac196720601687e2dc47\", \"lessThan\": \"203a35ebb49cdce377416b0690215d3ce090d364\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7482e3841d520a368426ac196720601687e2dc47\", \"lessThan\": \"4a81f6da9cb2d1ef911131a6fd8bd15cb61fc772\", \"versionType\": \"git\"}], \"programFiles\": [\"include/net/neighbour.h\", \"net/core/neighbour.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.16\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.16\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.16.8\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.16.*\"}, {\"status\": \"unaffected\", \"version\": \"5.17\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"include/net/neighbour.h\", \"net/core/neighbour.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/203a35ebb49cdce377416b0690215d3ce090d364\"}, {\"url\": \"https://git.kernel.org/stable/c/4a81f6da9cb2d1ef911131a6fd8bd15cb61fc772\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet, neigh: Do not trigger immediate probes on NUD_FAILED from neigh_managed_work\\n\\nsyzkaller was able to trigger a deadlock for NTF_MANAGED entries [0]:\\n\\n kworker/0:16/14617 is trying to acquire lock:\\n ffffffff8d4dd370 (\u0026tbl-\u003elock){++-.}-{2:2}, at: ___neigh_create+0x9e1/0x2990 net/core/neighbour.c:652\\n [...]\\n but task is already holding lock:\\n ffffffff8d4dd370 (\u0026tbl-\u003elock){++-.}-{2:2}, at: neigh_managed_work+0x35/0x250 net/core/neighbour.c:1572\\n\\nThe neighbor entry turned to NUD_FAILED state, where __neigh_event_send()\\ntriggered an immediate probe as per commit cd28ca0a3dd1 (\\\"neigh: reduce\\narp latency\\\") via neigh_probe() given table lock was held.\\n\\nOne option to fix this situation is to defer the neigh_probe() back to\\nthe neigh_timer_handler() similarly as pre cd28ca0a3dd1. For the case\\nof NTF_MANAGED, this deferral is acceptable given this only happens on\\nactual failure state and regular / expected state is NUD_VALID with the\\nentry already present.\\n\\nThe fix adds a parameter to __neigh_event_send() in order to communicate\\nwhether immediate probe is allowed or disallowed. Existing call-sites\\nof neigh_event_send() default as-is to immediate probe. However, the\\nneigh_managed_work() disables it via use of neigh_event_send_probe().\\n\\n[0] \u003cTASK\u003e\\n __dump_stack lib/dump_stack.c:88 [inline]\\n dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106\\n print_deadlock_bug kernel/locking/lockdep.c:2956 [inline]\\n check_deadlock kernel/locking/lockdep.c:2999 [inline]\\n validate_chain kernel/locking/lockdep.c:3788 [inline]\\n __lock_acquire.cold+0x149/0x3ab kernel/locking/lockdep.c:5027\\n lock_acquire kernel/locking/lockdep.c:5639 [inline]\\n lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5604\\n __raw_write_lock_bh include/linux/rwlock_api_smp.h:202 [inline]\\n _raw_write_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:334\\n ___neigh_create+0x9e1/0x2990 net/core/neighbour.c:652\\n ip6_finish_output2+0x1070/0x14f0 net/ipv6/ip6_output.c:123\\n __ip6_finish_output net/ipv6/ip6_output.c:191 [inline]\\n __ip6_finish_output+0x61e/0xe90 net/ipv6/ip6_output.c:170\\n ip6_finish_output+0x32/0x200 net/ipv6/ip6_output.c:201\\n NF_HOOK_COND include/linux/netfilter.h:296 [inline]\\n ip6_output+0x1e4/0x530 net/ipv6/ip6_output.c:224\\n dst_output include/net/dst.h:451 [inline]\\n NF_HOOK include/linux/netfilter.h:307 [inline]\\n ndisc_send_skb+0xa99/0x17f0 net/ipv6/ndisc.c:508\\n ndisc_send_ns+0x3a9/0x840 net/ipv6/ndisc.c:650\\n ndisc_solicit+0x2cd/0x4f0 net/ipv6/ndisc.c:742\\n neigh_probe+0xc2/0x110 net/core/neighbour.c:1040\\n __neigh_event_send+0x37d/0x1570 net/core/neighbour.c:1201\\n neigh_event_send include/net/neighbour.h:470 [inline]\\n neigh_managed_work+0x162/0x250 net/core/neighbour.c:1574\\n process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307\\n worker_thread+0x657/0x1110 kernel/workqueue.c:2454\\n kthread+0x2e9/0x3a0 kernel/kthread.c:377\\n ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295\\n \u003c/TASK\u003e\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.16.8\", \"versionStartIncluding\": \"5.16\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.17\", \"versionStartIncluding\": \"5.16\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T08:21:41.202Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2022-48719\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T08:21:41.202Z\", \"dateReserved\": \"2024-06-20T11:09:39.051Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-06-20T11:13:11.362Z\", \"assignerShortName\": \"Linux\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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