CVE-2022-48673
Vulnerability from cvelistv5
Published
2024-05-03 14:51
Modified
2024-11-04 12:14
Severity ?
EPSS score ?
Summary
net/smc: Fix possible access to freed memory in link clear
References
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"timestamp": "2024-05-31T18:55:55.049793Z",
"version": "2.0.3"
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"cna": {
"affected": [
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"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/smc/smc_core.c",
"net/smc/smc_core.h",
"net/smc/smc_wr.c",
"net/smc/smc_wr.h"
],
"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/smc: Fix possible access to freed memory in link clear\n\nAfter modifying the QP to the Error state, all RX WR would be completed\nwith WC in IB_WC_WR_FLUSH_ERR status. Current implementation does not\nwait for it is done, but destroy the QP and free the link group directly.\nSo there is a risk that accessing the freed memory in tasklet context.\n\nHere is a crash example:\n\n BUG: unable to handle page fault for address: ffffffff8f220860\n #PF: supervisor write access in kernel mode\n #PF: error_code(0x0002) - not-present page\n PGD f7300e067 P4D f7300e067 PUD f7300f063 PMD 8c4e45063 PTE 800ffff08c9df060\n Oops: 0002 [#1] SMP PTI\n CPU: 1 PID: 0 Comm: swapper/1 Kdump: loaded Tainted: G S OE 5.10.0-0607+ #23\n Hardware name: Inspur NF5280M4/YZMB-00689-101, BIOS 4.1.20 07/09/2018\n RIP: 0010:native_queued_spin_lock_slowpath+0x176/0x1b0\n Code: f3 90 48 8b 32 48 85 f6 74 f6 eb d5 c1 ee 12 83 e0 03 83 ee 01 48 c1 e0 05 48 63 f6 48 05 00 c8 02 00 48 03 04 f5 00 09 98 8e \u003c48\u003e 89 10 8b 42 08 85 c0 75 09 f3 90 8b 42 08 85 c0 74 f7 48 8b 32\n RSP: 0018:ffffb3b6c001ebd8 EFLAGS: 00010086\n RAX: ffffffff8f220860 RBX: 0000000000000246 RCX: 0000000000080000\n RDX: ffff91db1f86c800 RSI: 000000000000173c RDI: ffff91db62bace00\n RBP: ffff91db62bacc00 R08: 0000000000000000 R09: c00000010000028b\n R10: 0000000000055198 R11: ffffb3b6c001ea58 R12: ffff91db80e05010\n R13: 000000000000000a R14: 0000000000000006 R15: 0000000000000040\n FS: 0000000000000000(0000) GS:ffff91db1f840000(0000) knlGS:0000000000000000\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n CR2: ffffffff8f220860 CR3: 00000001f9580004 CR4: 00000000003706e0\n DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n Call Trace:\n \u003cIRQ\u003e\n _raw_spin_lock_irqsave+0x30/0x40\n mlx5_ib_poll_cq+0x4c/0xc50 [mlx5_ib]\n smc_wr_rx_tasklet_fn+0x56/0xa0 [smc]\n tasklet_action_common.isra.21+0x66/0x100\n __do_softirq+0xd5/0x29c\n asm_call_irq_on_stack+0x12/0x20\n \u003c/IRQ\u003e\n do_softirq_own_stack+0x37/0x40\n irq_exit_rcu+0x9d/0xa0\n sysvec_call_function_single+0x34/0x80\n asm_sysvec_call_function_single+0x12/0x20"
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"dateUpdated": "2024-11-04T12:14:26.437Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
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"url": "https://git.kernel.org/stable/c/89fcb70f1acd6b0bbf2f7bfbf45d7aa75a9bdcde"
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"url": "https://git.kernel.org/stable/c/e9b1a4f867ae9c1dbd1d71cd09cbdb3239fb4968"
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"title": "net/smc: Fix possible access to freed memory in link clear",
"x_generator": {
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"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2022-48673",
"datePublished": "2024-05-03T14:51:44.955Z",
"dateReserved": "2024-02-25T13:44:28.321Z",
"dateUpdated": "2024-11-04T12:14:26.437Z",
"state": "PUBLISHED"
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"dataVersion": "5.1",
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"nvd": "{\"cve\":{\"id\":\"CVE-2022-48673\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-03T15:15:07.530\",\"lastModified\":\"2024-05-23T20:26:54.160\",\"vulnStatus\":\"Analyzed\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet/smc: Fix possible access to freed memory in link clear\\n\\nAfter modifying the QP to the Error state, all RX WR would be completed\\nwith WC in IB_WC_WR_FLUSH_ERR status. Current implementation does not\\nwait for it is done, but destroy the QP and free the link group directly.\\nSo there is a risk that accessing the freed memory in tasklet context.\\n\\nHere is a crash example:\\n\\n BUG: unable to handle page fault for address: ffffffff8f220860\\n #PF: supervisor write access in kernel mode\\n #PF: error_code(0x0002) - not-present page\\n PGD f7300e067 P4D f7300e067 PUD f7300f063 PMD 8c4e45063 PTE 800ffff08c9df060\\n Oops: 0002 [#1] SMP PTI\\n CPU: 1 PID: 0 Comm: swapper/1 Kdump: loaded Tainted: G S OE 5.10.0-0607+ #23\\n Hardware name: Inspur NF5280M4/YZMB-00689-101, BIOS 4.1.20 07/09/2018\\n RIP: 0010:native_queued_spin_lock_slowpath+0x176/0x1b0\\n Code: f3 90 48 8b 32 48 85 f6 74 f6 eb d5 c1 ee 12 83 e0 03 83 ee 01 48 c1 e0 05 48 63 f6 48 05 00 c8 02 00 48 03 04 f5 00 09 98 8e \u003c48\u003e 89 10 8b 42 08 85 c0 75 09 f3 90 8b 42 08 85 c0 74 f7 48 8b 32\\n RSP: 0018:ffffb3b6c001ebd8 EFLAGS: 00010086\\n RAX: ffffffff8f220860 RBX: 0000000000000246 RCX: 0000000000080000\\n RDX: ffff91db1f86c800 RSI: 000000000000173c RDI: ffff91db62bace00\\n RBP: ffff91db62bacc00 R08: 0000000000000000 R09: c00000010000028b\\n R10: 0000000000055198 R11: ffffb3b6c001ea58 R12: ffff91db80e05010\\n R13: 000000000000000a R14: 0000000000000006 R15: 0000000000000040\\n FS: 0000000000000000(0000) GS:ffff91db1f840000(0000) knlGS:0000000000000000\\n CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\\n CR2: ffffffff8f220860 CR3: 00000001f9580004 CR4: 00000000003706e0\\n DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\\n DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\\n Call Trace:\\n \u003cIRQ\u003e\\n _raw_spin_lock_irqsave+0x30/0x40\\n mlx5_ib_poll_cq+0x4c/0xc50 [mlx5_ib]\\n smc_wr_rx_tasklet_fn+0x56/0xa0 [smc]\\n tasklet_action_common.isra.21+0x66/0x100\\n __do_softirq+0xd5/0x29c\\n asm_call_irq_on_stack+0x12/0x20\\n \u003c/IRQ\u003e\\n do_softirq_own_stack+0x37/0x40\\n irq_exit_rcu+0x9d/0xa0\\n sysvec_call_function_single+0x34/0x80\\n asm_sysvec_call_function_single+0x12/0x20\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/smc: corrige el posible acceso a la memoria liberada al borrar el enlace. Despu\u00e9s de modificar el QP al estado de Error, todos los RX WR se completar\u00edan con WC en estado IB_WC_WR_FLUSH_ERR. La implementaci\u00f3n actual no espera a que est\u00e9 terminada, sino que destruye el QP y libera el grupo de enlaces directamente. Por lo tanto, existe el riesgo de acceder a la memoria liberada en el contexto del tasklet. Aqu\u00ed hay un ejemplo de falla: ERROR: no se puede manejar el error de p\u00e1gina para la direcci\u00f3n: ffffffff8f220860 #PF: acceso de escritura del supervisor en modo kernel #PF: error_code(0x0002) - p\u00e1gina no presente PGD f7300e067 P4D f7300e067 PUD f7300f063 PMD 8c4e45063 PTE 800ffff08c9df060 operaciones: 0002 [#1] SMP PTI CPU: 1 PID: 0 Comunicaciones: intercambiador/1 Kdump: cargado Contaminado: GS OE 5.10.0-0607+ #23 Nombre de hardware: Inspur NF5280M4/YZMB-00689-101, BIOS 4.1.20 07 /09/2018 RIP: 0010:native_queued_spin_lock_slowpath+0x176/0x1b0 C\u00f3digo: f3 90 48 8b 32 48 85 f6 74 f6 eb d5 c1 ee 12 83 e0 03 83 ee 01 48 c1 e0 05 48 63 f6 48 5 00 c8 02 00 48 03 04 f5 00 09 98 8e \u0026lt;48\u0026gt; 89 10 8b 42 08 85 c0 75 09 f3 90 8b 42 08 85 c0 74 f7 48 8b 32 RSP: 0018:ffffb3b6c001ebd8 EFLAGS: 00010086 RAX: ffffffff8f220860 RBX: 0000000000000246 RCX: 0000000000080000 RDX: ffff91db1f86c800 RSI: 000000000000173c RDI: ffff91db62bace00 RBP: ffff91db62bacc00 R08: 00000000000000000 R09: c00000010000028b R10: 0000000000055 198 R11: ffffb3b6c001ea58 R12: ffff91db80e05010 R13: 000000000000000a R14: 0000000000000006 R15: 0000000000000040 FS: 0000000000000000(0 000) GS:ffff91db1f840000(0000) knlGS:0000000000000000 CS : 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffff8f220860 CR3: 00000001f9580004 CR4: 00000000003706e0 DR0: 0000000000000000 DR1: 0000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Seguimiento de llamadas: _raw_spin_lock_irqsave+0x30/0x40 _encuesta_cq +0x4c/0xc50 [mlx5_ib] smc_wr_rx_tasklet_fn+0x56/0xa0 [smc] tasklet_action_common.isra.21+0x66/0x100 __do_softirq+0xd5/0x29c asm_call_irq_on_stack+0x12/0x20 n_stack+0x37/0x40 irq_exit_rcu+0x9d/0xa0 sysvec_call_function_single+ 0x34/0x80 asm_sysvec_call_function_single+0x12/0x20\"}],\"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\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-755\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.11\",\"versionEndExcluding\":\"5.19.9\",\"matchCriteriaId\":\"5AE3A860-340D-4243-9726-E154B3DF0C06\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/89fcb70f1acd6b0bbf2f7bfbf45d7aa75a9bdcde\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e9b1a4f867ae9c1dbd1d71cd09cbdb3239fb4968\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
}
}
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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.