github - ghsa-qx8p-8rg2-4j84

GHSA-QX8P-8RG2-4J84

Vulnerability from github – Published: 2022-05-17 03:05 – Updated: 2025-04-12 13:06

Details

The __get_user_asm_ex macro in arch/x86/include/asm/uaccess.h in the Linux kernel 4.4.22 through 4.4.28 contains extended asm statements that are incompatible with the exception table, which allows local users to obtain root access on non-SMEP platforms via a crafted application. NOTE: this vulnerability exists because of incorrect backporting of the CVE-2016-9178 patch to older kernels.

Severity ?

7.8 (High)


                  
                    CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2016-9644"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2016-11-28T03:59:00Z",
    "severity": "HIGH"
  },
  "details": "The __get_user_asm_ex macro in arch/x86/include/asm/uaccess.h in the Linux kernel 4.4.22 through 4.4.28 contains extended asm statements that are incompatible with the exception table, which allows local users to obtain root access on non-SMEP platforms via a crafted application.  NOTE: this vulnerability exists because of incorrect backporting of the CVE-2016-9178 patch to older kernels.",
  "id": "GHSA-qx8p-8rg2-4j84",
  "modified": "2025-04-12T13:06:50Z",
  "published": "2022-05-17T03:05:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2016-9644"
    },
    {
      "type": "WEB",
      "url": "https://lwn.net/Articles/705220"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2016/11/07/4"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/94545"
    },
    {
      "type": "WEB",
      "url": "http://www.ubuntu.com/usn/USN-3146-1"
    },
    {
      "type": "WEB",
      "url": "http://www.ubuntu.com/usn/USN-3146-2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2016-9644 (GCVE-0-2016-9644)

Vulnerability from cvelistv5 – Published: 2016-11-28 03:01 – Updated: 2024-08-06 02:59

Summary

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

	http://www.ubuntu.com/usn/USN-3146-2	vendor-advisoryx_refsource_UBUNTU
	http://www.securityfocus.com/bid/94545	vdb-entryx_refsource_BID
	http://www.ubuntu.com/usn/USN-3146-1	vendor-advisoryx_refsource_UBUNTU
	http://www.openwall.com/lists/oss-security/2016/11/07/4	mailing-listx_refsource_MLIST
	https://lwn.net/Articles/705220/	x_refsource_CONFIRM

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          },
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Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-QX8P-8RG2-4J84

CVE-2016-9644 (GCVE-0-2016-9644)

Tags

Sightings

Nomenclature