CVE-2022-48985 (GCVE-0-2022-48985)

Vulnerability from cvelistv5 – Published: 2024-10-21 20:06 – Updated: 2026-05-11 18:50
VLAI?
Title
net: mana: Fix race on per-CQ variable napi work_done
Summary
In the Linux kernel, the following vulnerability has been resolved: net: mana: Fix race on per-CQ variable napi work_done After calling napi_complete_done(), the NAPIF_STATE_SCHED bit may be cleared, and another CPU can start napi thread and access per-CQ variable, cq->work_done. If the other thread (for example, from busy_poll) sets it to a value >= budget, this thread will continue to run when it should stop, and cause memory corruption and panic. To fix this issue, save the per-CQ work_done variable in a local variable before napi_complete_done(), so it won't be corrupted by a possible concurrent thread after napi_complete_done(). Also, add a flag bit to advertise to the NIC firmware: the NAPI work_done variable race is fixed, so the driver is able to reliably support features like busy_poll.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: e1b5683ff62e7b328317aec08869495992053e9d , < fe50a9bbeb1f042e756c5cfa7708112c944368de (git)
Affected: e1b5683ff62e7b328317aec08869495992053e9d , < 6740d8572ccd1bca50d8a1ca2bedc333f50ed5f3 (git)
Affected: e1b5683ff62e7b328317aec08869495992053e9d , < 18010ff776fa42340efc428b3ea6d19b3e7c7b21 (git)
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Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 5.15.83 , ≤ 5.15.* (semver)
Unaffected: 6.0.13 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
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      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-48985\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-10-22T13:17:20.394145Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-10-22T13:17:23.603Z\"}}], \"cna\": {\"title\": \"net: mana: Fix race on per-CQ variable napi work_done\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"e1b5683ff62e7b328317aec08869495992053e9d\", \"lessThan\": \"fe50a9bbeb1f042e756c5cfa7708112c944368de\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e1b5683ff62e7b328317aec08869495992053e9d\", \"lessThan\": \"6740d8572ccd1bca50d8a1ca2bedc333f50ed5f3\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e1b5683ff62e7b328317aec08869495992053e9d\", \"lessThan\": \"18010ff776fa42340efc428b3ea6d19b3e7c7b21\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/net/ethernet/microsoft/mana/gdma.h\", \"drivers/net/ethernet/microsoft/mana/mana_en.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.15\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.15\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.15.83\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.0.13\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.0.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/ethernet/microsoft/mana/gdma.h\", \"drivers/net/ethernet/microsoft/mana/mana_en.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/fe50a9bbeb1f042e756c5cfa7708112c944368de\"}, {\"url\": \"https://git.kernel.org/stable/c/6740d8572ccd1bca50d8a1ca2bedc333f50ed5f3\"}, {\"url\": \"https://git.kernel.org/stable/c/18010ff776fa42340efc428b3ea6d19b3e7c7b21\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: mana: Fix race on per-CQ variable napi work_done\\n\\nAfter calling napi_complete_done(), the NAPIF_STATE_SCHED bit may be\\ncleared, and another CPU can start napi thread and access per-CQ variable,\\ncq-\u003ework_done. If the other thread (for example, from busy_poll) sets\\nit to a value \u003e= budget, this thread will continue to run when it should\\nstop, and cause memory corruption and panic.\\n\\nTo fix this issue, save the per-CQ work_done variable in a local variable\\nbefore napi_complete_done(), so it won\u0027t be corrupted by a possible\\nconcurrent thread after napi_complete_done().\\n\\nAlso, add a flag bit to advertise to the NIC firmware: the NAPI work_done\\nvariable race is fixed, so the driver is able to reliably support features\\nlike busy_poll.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.83\", \"versionStartIncluding\": \"5.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.0.13\", \"versionStartIncluding\": \"5.15\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1\", \"versionStartIncluding\": \"5.15\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T18:50:58.403Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-48985\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T18:50:58.403Z\", \"dateReserved\": \"2024-08-22T01:27:53.633Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-10-21T20:06:01.802Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Taxonomy of the tags.




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.