CVE-2024-40977 (GCVE-0-2024-40977)

Vulnerability from cvelistv5 – Published: 2024-07-12 12:32 – Updated: 2026-05-11 20:23
VLAI
Title
wifi: mt76: mt7921s: fix potential hung tasks during chip recovery
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7921s: fix potential hung tasks during chip recovery During chip recovery (e.g. chip reset), there is a possible situation that kernel worker reset_work is holding the lock and waiting for kernel thread stat_worker to be parked, while stat_worker is waiting for the release of the same lock. It causes a deadlock resulting in the dumping of hung tasks messages and possible rebooting of the device. This patch prevents the execution of stat_worker during the chip recovery.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 7bc04215a66b60e198aecaee8418f6d79fa19faa , < 0b81faa05b0b9feb3ae2d69be1d21f0d126ecb08 (git)
Affected: 7bc04215a66b60e198aecaee8418f6d79fa19faa , < 85edd783f4539a994d66c4c014d5858f490b7a02 (git)
Affected: 7bc04215a66b60e198aecaee8418f6d79fa19faa , < e974dd4c22a23ec3ce579fb6d31a674ac0435da9 (git)
Affected: 7bc04215a66b60e198aecaee8418f6d79fa19faa , < ecf0b2b8a37c8464186620bef37812a117ff6366 (git)
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Linux Linux Affected: 4.16
Unaffected: 0 , < 4.16 (semver)
Unaffected: 6.1.96 , ≤ 6.1.* (semver)
Unaffected: 6.6.36 , ≤ 6.6.* (semver)
Unaffected: 6.9.7 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
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      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/0b81faa05b0b9feb3ae2d69be1d21f0d126ecb08\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/85edd783f4539a994d66c4c014d5858f490b7a02\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/e974dd4c22a23ec3ce579fb6d31a674ac0435da9\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/ecf0b2b8a37c8464186620bef37812a117ff6366\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T04:39:55.879Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-40977\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T17:02:34.340786Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:22.222Z\"}}], \"cna\": {\"title\": \"wifi: mt76: mt7921s: fix potential hung tasks during chip recovery\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"7bc04215a66b60e198aecaee8418f6d79fa19faa\", \"lessThan\": \"0b81faa05b0b9feb3ae2d69be1d21f0d126ecb08\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7bc04215a66b60e198aecaee8418f6d79fa19faa\", \"lessThan\": \"85edd783f4539a994d66c4c014d5858f490b7a02\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7bc04215a66b60e198aecaee8418f6d79fa19faa\", \"lessThan\": \"e974dd4c22a23ec3ce579fb6d31a674ac0435da9\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7bc04215a66b60e198aecaee8418f6d79fa19faa\", \"lessThan\": \"ecf0b2b8a37c8464186620bef37812a117ff6366\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/net/wireless/mediatek/mt76/mt7921/mac.c\", \"drivers/net/wireless/mediatek/mt76/mt7921/pci_mac.c\", \"drivers/net/wireless/mediatek/mt76/mt7921/sdio_mac.c\", \"drivers/net/wireless/mediatek/mt76/sdio.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.16\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.16\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.1.96\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.36\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.9.7\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.9.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/wireless/mediatek/mt76/mt7921/mac.c\", \"drivers/net/wireless/mediatek/mt76/mt7921/pci_mac.c\", \"drivers/net/wireless/mediatek/mt76/mt7921/sdio_mac.c\", \"drivers/net/wireless/mediatek/mt76/sdio.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/0b81faa05b0b9feb3ae2d69be1d21f0d126ecb08\"}, {\"url\": \"https://git.kernel.org/stable/c/85edd783f4539a994d66c4c014d5858f490b7a02\"}, {\"url\": \"https://git.kernel.org/stable/c/e974dd4c22a23ec3ce579fb6d31a674ac0435da9\"}, {\"url\": \"https://git.kernel.org/stable/c/ecf0b2b8a37c8464186620bef37812a117ff6366\"}], \"x_generator\": {\"engine\": \"bippy-5f407fcff5a0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nwifi: mt76: mt7921s: fix potential hung tasks during chip recovery\\n\\nDuring chip recovery (e.g. chip reset), there is a possible situation that\\nkernel worker reset_work is holding the lock and waiting for kernel thread\\nstat_worker to be parked, while stat_worker is waiting for the release of\\nthe same lock.\\nIt causes a deadlock resulting in the dumping of hung tasks messages and\\npossible rebooting of the device.\\n\\nThis patch prevents the execution of stat_worker during the chip recovery.\"}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-01-17T15:56:08.500Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-40977\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-01-17T15:56:08.500Z\", \"dateReserved\": \"2024-07-12T12:17:45.603Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-07-12T12:32:13.447Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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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.