CVE-2022-48673 (GCVE-0-2022-48673)

Vulnerability from cvelistv5 – Published: 2024-05-03 14:51 – Updated: 2026-05-11 18:44
VLAI
Title
net/smc: Fix possible access to freed memory in link clear
Summary
In the Linux kernel, the following vulnerability has been resolved: net/smc: Fix possible access to freed memory in link clear After modifying the QP to the Error state, all RX WR would be completed with WC in IB_WC_WR_FLUSH_ERR status. Current implementation does not wait for it is done, but destroy the QP and free the link group directly. So there is a risk that accessing the freed memory in tasklet context. Here is a crash example: BUG: unable to handle page fault for address: ffffffff8f220860 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD f7300e067 P4D f7300e067 PUD f7300f063 PMD 8c4e45063 PTE 800ffff08c9df060 Oops: 0002 [#1] SMP PTI CPU: 1 PID: 0 Comm: swapper/1 Kdump: loaded Tainted: G S OE 5.10.0-0607+ #23 Hardware name: Inspur NF5280M4/YZMB-00689-101, BIOS 4.1.20 07/09/2018 RIP: 0010:native_queued_spin_lock_slowpath+0x176/0x1b0 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 <48> 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: 0000000000000000 R09: c00000010000028b R10: 0000000000055198 R11: ffffb3b6c001ea58 R12: ffff91db80e05010 R13: 000000000000000a R14: 0000000000000006 R15: 0000000000000040 FS: 0000000000000000(0000) GS:ffff91db1f840000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffff8f220860 CR3: 00000001f9580004 CR4: 00000000003706e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> _raw_spin_lock_irqsave+0x30/0x40 mlx5_ib_poll_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 </IRQ> do_softirq_own_stack+0x37/0x40 irq_exit_rcu+0x9d/0xa0 sysvec_call_function_single+0x34/0x80 asm_sysvec_call_function_single+0x12/0x20
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: bd4ad57718cc86d2972a20f9791cd079996a4dd6 , < 89fcb70f1acd6b0bbf2f7bfbf45d7aa75a9bdcde (git)
Affected: bd4ad57718cc86d2972a20f9791cd079996a4dd6 , < e9b1a4f867ae9c1dbd1d71cd09cbdb3239fb4968 (git)
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Linux Linux Affected: 4.11
Unaffected: 0 , < 4.11 (semver)
Unaffected: 5.19.9 , ≤ 5.19.* (semver)
Unaffected: 6.0 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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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. 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    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/89fcb70f1acd6b0bbf2f7bfbf45d7aa75a9bdcde\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/e9b1a4f867ae9c1dbd1d71cd09cbdb3239fb4968\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-03T15:17:55.722Z\"}}, {\"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-48673\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-05-31T18:55:55.049793Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-05-31T18:55:58.287Z\"}, \"title\": \"CISA ADP Vulnrichment\"}], \"cna\": {\"title\": \"net/smc: Fix possible access to freed memory in link clear\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"bd4ad57718cc86d2972a20f9791cd079996a4dd6\", \"lessThan\": \"89fcb70f1acd6b0bbf2f7bfbf45d7aa75a9bdcde\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bd4ad57718cc86d2972a20f9791cd079996a4dd6\", \"lessThan\": \"e9b1a4f867ae9c1dbd1d71cd09cbdb3239fb4968\", \"versionType\": \"git\"}], \"programFiles\": [\"net/smc/smc_core.c\", \"net/smc/smc_core.h\", \"net/smc/smc_wr.c\", \"net/smc/smc_wr.h\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.11\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.11\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.19.9\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.19.*\"}, {\"status\": \"unaffected\", \"version\": \"6.0\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/smc/smc_core.c\", \"net/smc/smc_core.h\", \"net/smc/smc_wr.c\", \"net/smc/smc_wr.h\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/89fcb70f1acd6b0bbf2f7bfbf45d7aa75a9bdcde\"}, {\"url\": \"https://git.kernel.org/stable/c/e9b1a4f867ae9c1dbd1d71cd09cbdb3239fb4968\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"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\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.19.9\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.0\", \"versionStartIncluding\": \"4.11\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T18:44:55.745Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-48673\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T18:44:55.745Z\", \"dateReserved\": \"2024-02-25T13:44:28.321Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-03T14:51:44.955Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.