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CVE-2022-49569 (GCVE-0-2022-49569)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:23 – Updated: 2026-05-11 19:02
VLAI
Title
spi: bcm2835: bcm2835_spi_handle_err(): fix NULL pointer deref for non DMA transfers
Summary
In the Linux kernel, the following vulnerability has been resolved: spi: bcm2835: bcm2835_spi_handle_err(): fix NULL pointer deref for non DMA transfers In case a IRQ based transfer times out the bcm2835_spi_handle_err() function is called. Since commit 1513ceee70f2 ("spi: bcm2835: Drop dma_pending flag") the TX and RX DMA transfers are unconditionally canceled, leading to NULL pointer derefs if ctlr->dma_tx or ctlr->dma_rx are not set. Fix the NULL pointer deref by checking that ctlr->dma_tx and ctlr->dma_rx are valid pointers before accessing them.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 19:36 UTC
CWE
  • CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1513ceee70f2bd523e025efe0c715328e1a43ffd , < 76668d2a2f367d25ff448e6d7087406af7d7bb2b (git)
Affected: 1513ceee70f2bd523e025efe0c715328e1a43ffd , < 684896e675edd8b669fd3e9f547c5038222d85bc (git)
Affected: 1513ceee70f2bd523e025efe0c715328e1a43ffd , < 58466e05390043d2805685c70f55f3f59711bdf2 (git)
Affected: 1513ceee70f2bd523e025efe0c715328e1a43ffd , < 49ffa473218012e765682343de2052eb4c1f06a7 (git)
Affected: 1513ceee70f2bd523e025efe0c715328e1a43ffd , < 4ceaa684459d414992acbefb4e4c31f2dfc50641 (git)
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Linux Linux Affected: 5.4
Unaffected: 0 , < 5.4 (semver)
Unaffected: 5.4.208 , ≤ 5.4.* (semver)
Unaffected: 5.10.134 , ≤ 5.10.* (semver)
Unaffected: 5.15.58 , ≤ 5.15.* (semver)
Unaffected: 5.18.15 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)
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    "redhat_vex": {
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      "source": "Red Hat CSAF VEX",
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      "title": "kernel: spi: bcm2835: bcm2835_spi_handle_err(): fix NULL pointer deref for non DMA transfers",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49569.json",
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    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.5, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-49569\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-10-01T19:36:53.132974Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-476\", \"description\": \"CWE-476 NULL Pointer Dereference\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-10-01T16:50:16.574Z\"}}], \"cna\": {\"title\": \"spi: bcm2835: bcm2835_spi_handle_err(): fix NULL pointer deref for non DMA transfers\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"1513ceee70f2bd523e025efe0c715328e1a43ffd\", \"lessThan\": \"76668d2a2f367d25ff448e6d7087406af7d7bb2b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1513ceee70f2bd523e025efe0c715328e1a43ffd\", \"lessThan\": \"684896e675edd8b669fd3e9f547c5038222d85bc\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1513ceee70f2bd523e025efe0c715328e1a43ffd\", \"lessThan\": \"58466e05390043d2805685c70f55f3f59711bdf2\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1513ceee70f2bd523e025efe0c715328e1a43ffd\", \"lessThan\": \"49ffa473218012e765682343de2052eb4c1f06a7\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1513ceee70f2bd523e025efe0c715328e1a43ffd\", \"lessThan\": \"4ceaa684459d414992acbefb4e4c31f2dfc50641\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/spi/spi-bcm2835.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.4\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.4\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.208\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.134\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.58\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.18.15\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.18.*\"}, {\"status\": \"unaffected\", \"version\": \"5.19\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/spi/spi-bcm2835.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/76668d2a2f367d25ff448e6d7087406af7d7bb2b\"}, {\"url\": \"https://git.kernel.org/stable/c/684896e675edd8b669fd3e9f547c5038222d85bc\"}, {\"url\": \"https://git.kernel.org/stable/c/58466e05390043d2805685c70f55f3f59711bdf2\"}, {\"url\": \"https://git.kernel.org/stable/c/49ffa473218012e765682343de2052eb4c1f06a7\"}, {\"url\": \"https://git.kernel.org/stable/c/4ceaa684459d414992acbefb4e4c31f2dfc50641\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nspi: bcm2835: bcm2835_spi_handle_err(): fix NULL pointer deref for non DMA transfers\\n\\nIn case a IRQ based transfer times out the bcm2835_spi_handle_err()\\nfunction is called. Since commit 1513ceee70f2 (\\\"spi: bcm2835: Drop\\ndma_pending flag\\\") the TX and RX DMA transfers are unconditionally\\ncanceled, leading to NULL pointer derefs if ctlr-\u003edma_tx or\\nctlr-\u003edma_rx are not set.\\n\\nFix the NULL pointer deref by checking that ctlr-\u003edma_tx and\\nctlr-\u003edma_rx are valid pointers before accessing them.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.208\", \"versionStartIncluding\": \"5.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.134\", \"versionStartIncluding\": \"5.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.58\", \"versionStartIncluding\": \"5.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.18.15\", \"versionStartIncluding\": \"5.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.19\", \"versionStartIncluding\": \"5.4\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T19:02:29.249Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-49569\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T19:02:29.249Z\", \"dateReserved\": \"2025-02-26T02:21:30.410Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-02-26T02:23:13.209Z\", \"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.