github - ghsa-c299-229x-w5c5

ghsa-c299-229x-w5c5

Vulnerability from github

Published

2024-08-22 03:31

Modified

2024-09-11 18:31

Severity ?

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

In the Linux kernel, the following vulnerability has been resolved:

spi: spi-zynq-qspi: Fix a NULL pointer dereference in zynq_qspi_exec_mem_op()

In zynq_qspi_exec_mem_op(), kzalloc() is directly used in memset(), which could lead to a NULL pointer dereference on failure of kzalloc().

Fix this bug by adding a check of tmpbuf.

This bug was found by a static analyzer. The analysis employs differential checking to identify inconsistent security operations (e.g., checks or kfrees) between two code paths and confirms that the inconsistent operations are not recovered in the current function or the callers, so they constitute bugs.

Note that, as a bug found by static analysis, it can be a false positive or hard to trigger. Multiple researchers have cross-reviewed the bug.

Builds with CONFIG_SPI_ZYNQ_QSPI=m show no new warnings, and our static analyzer no longer warns about this code.

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2021-4441"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-08-22T02:15:04Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: spi-zynq-qspi: Fix a NULL pointer dereference in zynq_qspi_exec_mem_op()\n\nIn zynq_qspi_exec_mem_op(), kzalloc() is directly used in memset(),\nwhich could lead to a NULL pointer dereference on failure of\nkzalloc().\n\nFix this bug by adding a check of tmpbuf.\n\nThis bug was found by a static analyzer. The analysis employs\ndifferential checking to identify inconsistent security operations\n(e.g., checks or kfrees) between two code paths and confirms that the\ninconsistent operations are not recovered in the current function or\nthe callers, so they constitute bugs.\n\nNote that, as a bug found by static analysis, it can be a false\npositive or hard to trigger. Multiple researchers have cross-reviewed\nthe bug.\n\nBuilds with CONFIG_SPI_ZYNQ_QSPI=m show no new warnings,\nand our static analyzer no longer warns about this code.",
  "id": "GHSA-c299-229x-w5c5",
  "modified": "2024-09-11T18:31:02Z",
  "published": "2024-08-22T03:31:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-4441"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2efece1368aeee2d2552c7ec36aeb676c4d4c95f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3c32405d6474a21f7d742828e73c13e326dcae82"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ab3824427b848da10e9fe2727f035bbeecae6ff4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b9dd08cbebe0c593c49bf86d2012a431494e54cb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/df14d2bed8e2455878e046e67123d9ecb2e79056"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

cve-2021-4441

Vulnerability from cvelistv5

Published

2024-08-22 01:30

Modified

2024-12-19 07:31

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: spi: spi-zynq-qspi: Fix a NULL pointer dereference in zynq_qspi_exec_mem_op() In zynq_qspi_exec_mem_op(), kzalloc() is directly used in memset(), which could lead to a NULL pointer dereference on failure of kzalloc(). Fix this bug by adding a check of tmpbuf. This bug was found by a static analyzer. The analysis employs differential checking to identify inconsistent security operations (e.g., checks or kfrees) between two code paths and confirms that the inconsistent operations are not recovered in the current function or the callers, so they constitute bugs. Note that, as a bug found by static analysis, it can be a false positive or hard to trigger. Multiple researchers have cross-reviewed the bug. Builds with CONFIG_SPI_ZYNQ_QSPI=m show no new warnings, and our static analyzer no longer warns about this code.

References

▼	URL	Tags
	https://git.kernel.org/stable/c/df14d2bed8e2455878e046e67123d9ecb2e79056
	https://git.kernel.org/stable/c/2efece1368aeee2d2552c7ec36aeb676c4d4c95f
	https://git.kernel.org/stable/c/3c32405d6474a21f7d742828e73c13e326dcae82
	https://git.kernel.org/stable/c/b9dd08cbebe0c593c49bf86d2012a431494e54cb
	https://git.kernel.org/stable/c/ab3824427b848da10e9fe2727f035bbeecae6ff4

Impacted products

Vendor

Product

Version

▼

Linux

Version: 67dca5e580f1e93a66177389981541cac208c817
Version: 67dca5e580f1e93a66177389981541cac208c817
Version: 67dca5e580f1e93a66177389981541cac208c817
Version: 67dca5e580f1e93a66177389981541cac208c817
Version: 67dca5e580f1e93a66177389981541cac208c817

Linux

Version: 5.2

Show details on NVD website

JSON

To clipboard

{
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          {
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                "id": "CVE-2021-4441",
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                  },
                  {
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                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T15:34:36.575133Z",
                "version": "2.0.3"
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        "providerMetadata": {
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        }
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    "dateReserved": "2024-08-22T01:26:23.737Z",
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    "state": "PUBLISHED"
  },
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}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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