CVE-2021-47016 (GCVE-0-2021-47016)

Vulnerability from cvelistv5 – Published: 2024-02-29 22:31 – Updated: 2026-05-11 13:46
VLAI
Title
m68k: mvme147,mvme16x: Don't wipe PCC timer config bits
Summary
In the Linux kernel, the following vulnerability has been resolved: m68k: mvme147,mvme16x: Don't wipe PCC timer config bits Don't clear the timer 1 configuration bits when clearing the interrupt flag and counter overflow. As Michael reported, "This results in no timer interrupts being delivered after the first. Initialization then hangs in calibrate_delay as the jiffies counter is not updated." On mvme16x, enable the timer after requesting the irq, consistent with mvme147.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 7529b90d051e4629884771ba2b1d3a87d2c6a9d7 , < f6a90818a32058fca62cda3a2027a6a2364e1878 (git)
Affected: 7529b90d051e4629884771ba2b1d3a87d2c6a9d7 , < 1dfb26df15fc7036a74221d43de7427f74293dae (git)
Affected: 7529b90d051e4629884771ba2b1d3a87d2c6a9d7 , < 73fdeb612d25b5e105c219e05434285a45d23576 (git)
Affected: 7529b90d051e4629884771ba2b1d3a87d2c6a9d7 , < 5d34225169346cab5145978d153b9ce90e9ace21 (git)
Affected: 7529b90d051e4629884771ba2b1d3a87d2c6a9d7 , < 43262178c043032e7c42d00de44c818ba05f9967 (git)
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Linux Linux Affected: 5.2
Unaffected: 0 , < 5.2 (semver)
Unaffected: 5.4.119 , ≤ 5.4.* (semver)
Unaffected: 5.10.37 , ≤ 5.10.* (semver)
Unaffected: 5.11.21 , ≤ 5.11.* (semver)
Unaffected: 5.12.4 , ≤ 5.12.* (semver)
Unaffected: 5.13 , ≤ * (original_commit_for_fix)
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      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/f6a90818a32058fca62cda3a2027a6a2364e1878\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/1dfb26df15fc7036a74221d43de7427f74293dae\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/73fdeb612d25b5e105c219e05434285a45d23576\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/5d34225169346cab5145978d153b9ce90e9ace21\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/43262178c043032e7c42d00de44c818ba05f9967\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-04T05:24:39.559Z\"}}, {\"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-47016\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-03-01T16:15:35.583749Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-05-23T19:01:14.471Z\"}, \"title\": \"CISA ADP Vulnrichment\"}], \"cna\": {\"title\": \"m68k: mvme147,mvme16x: Don\u0027t wipe PCC timer config bits\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"7529b90d051e4629884771ba2b1d3a87d2c6a9d7\", \"lessThan\": \"f6a90818a32058fca62cda3a2027a6a2364e1878\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7529b90d051e4629884771ba2b1d3a87d2c6a9d7\", \"lessThan\": \"1dfb26df15fc7036a74221d43de7427f74293dae\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7529b90d051e4629884771ba2b1d3a87d2c6a9d7\", \"lessThan\": \"73fdeb612d25b5e105c219e05434285a45d23576\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7529b90d051e4629884771ba2b1d3a87d2c6a9d7\", \"lessThan\": \"5d34225169346cab5145978d153b9ce90e9ace21\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7529b90d051e4629884771ba2b1d3a87d2c6a9d7\", \"lessThan\": \"43262178c043032e7c42d00de44c818ba05f9967\", \"versionType\": \"git\"}], \"programFiles\": [\"arch/m68k/include/asm/mvme147hw.h\", \"arch/m68k/mvme147/config.c\", \"arch/m68k/mvme16x/config.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.2\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.2\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.119\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.37\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.11.21\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.11.*\"}, {\"status\": \"unaffected\", \"version\": \"5.12.4\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.12.*\"}, {\"status\": \"unaffected\", \"version\": \"5.13\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"arch/m68k/include/asm/mvme147hw.h\", \"arch/m68k/mvme147/config.c\", \"arch/m68k/mvme16x/config.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/f6a90818a32058fca62cda3a2027a6a2364e1878\"}, {\"url\": \"https://git.kernel.org/stable/c/1dfb26df15fc7036a74221d43de7427f74293dae\"}, {\"url\": \"https://git.kernel.org/stable/c/73fdeb612d25b5e105c219e05434285a45d23576\"}, {\"url\": \"https://git.kernel.org/stable/c/5d34225169346cab5145978d153b9ce90e9ace21\"}, {\"url\": \"https://git.kernel.org/stable/c/43262178c043032e7c42d00de44c818ba05f9967\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nm68k: mvme147,mvme16x: Don\u0027t wipe PCC timer config bits\\n\\nDon\u0027t clear the timer 1 configuration bits when clearing the interrupt flag\\nand counter overflow. As Michael reported, \\\"This results in no timer\\ninterrupts being delivered after the first. Initialization then hangs\\nin calibrate_delay as the jiffies counter is not updated.\\\"\\n\\nOn mvme16x, enable the timer after requesting the irq, consistent with\\nmvme147.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.119\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.37\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.11.21\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.12.4\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.13\", \"versionStartIncluding\": \"5.2\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T07:02:22.493Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-47016\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T07:02:22.493Z\", \"dateReserved\": \"2024-02-27T18:42:55.954Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-02-29T22:31:13.115Z\", \"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.