github - ghsa-q4c9-gg27-f3pq

ghsa-q4c9-gg27-f3pq

Vulnerability from github

Published

2022-05-24 19:04

Modified

2022-05-24 19:04

Details

The io_uring subsystem in the Linux kernel allowed the MAX_RW_COUNT limit to be bypassed in the PROVIDE_BUFFERS operation, which led to negative values being usedin mem_rw when reading /proc//mem. This could be used to create a heap overflow leading to arbitrary code execution in the kernel. It was addressed via commit d1f82808877b ("io_uring: truncate lengths larger than MAX_RW_COUNT on provide buffers") (v5.13-rc1) and backported to the stable kernels in v5.12.4, v5.11.21, and v5.10.37. It was introduced in ddf0322db79c ("io_uring: add IORING_OP_PROVIDE_BUFFERS") (v5.7-rc1).

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{
   affected: [],
   aliases: [
      "CVE-2021-3491",
   ],
   database_specific: {
      cwe_ids: [
         "CWE-787",
      ],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2021-06-04T02:15:00Z",
      severity: "HIGH",
   },
   details: "The io_uring subsystem in the Linux kernel allowed the MAX_RW_COUNT limit to be bypassed in the PROVIDE_BUFFERS operation, which led to negative values being usedin mem_rw when reading /proc/<PID>/mem. This could be used to create a heap overflow leading to arbitrary code execution in the kernel. It was addressed via commit d1f82808877b (\"io_uring: truncate lengths larger than MAX_RW_COUNT on provide buffers\") (v5.13-rc1) and backported to the stable kernels in v5.12.4, v5.11.21, and v5.10.37. It was introduced in ddf0322db79c (\"io_uring: add IORING_OP_PROVIDE_BUFFERS\") (v5.7-rc1).",
   id: "GHSA-q4c9-gg27-f3pq",
   modified: "2022-05-24T19:04:07Z",
   published: "2022-05-24T19:04:07Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2021-3491",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d1f82808877bb10d3deee7cf3374a4eb3fb582db",
      },
      {
         type: "WEB",
         url: "https://security.netapp.com/advisory/ntap-20210716-0004",
      },
      {
         type: "WEB",
         url: "https://ubuntu.com/security/notices/USN-4949-1",
      },
      {
         type: "WEB",
         url: "https://ubuntu.com/security/notices/USN-4950-1",
      },
      {
         type: "WEB",
         url: "https://www.openwall.com/lists/oss-security/2021/05/11/13",
      },
      {
         type: "WEB",
         url: "https://www.zerodayinitiative.com/advisories/ZDI-21-589",
      },
   ],
   schema_version: "1.4.0",
   severity: [],
}

cve-2021-3491

Vulnerability from cvelistv5

Published

2021-06-04 01:40

Modified

2024-09-16 22:09

Severity ?

7.8 (High) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Summary

The io_uring subsystem in the Linux kernel allowed the MAX_RW_COUNT limit to be bypassed in the PROVIDE_BUFFERS operation, which led to negative values being usedin mem_rw when reading /proc/<PID>/mem. This could be used to create a heap overflow leading to arbitrary code execution in the kernel. It was addressed via commit d1f82808877b ("io_uring: truncate lengths larger than MAX_RW_COUNT on provide buffers") (v5.13-rc1) and backported to the stable kernels in v5.12.4, v5.11.21, and v5.10.37. It was introduced in ddf0322db79c ("io_uring: add IORING_OP_PROVIDE_BUFFERS") (v5.7-rc1).

References

▼	URL	Tags
	https://ubuntu.com/security/notices/USN-4950-1	vendor-advisory, x_refsource_UBUNTU
	https://ubuntu.com/security/notices/USN-4949-1	vendor-advisory, x_refsource_UBUNTU
	https://www.openwall.com/lists/oss-security/2021/05/11/13	mailing-list, x_refsource_MLIST
	https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d1f82808877bb10d3deee7cf3374a4eb3fb582db	x_refsource_MISC
	https://www.zerodayinitiative.com/advisories/ZDI-21-589/	x_refsource_MISC
	https://security.netapp.com/advisory/ntap-20210716-0004/	x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	Linux	Linux kernel	Version: trunk < v5.13-rc4 Version: linux-5.12.y < v5.12.4 Version: linux-5.11.y < v5.11.21 Version: linux-5.10.y < v5.10.37 Version: v5.7-rc1 < 5.7*

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All sightings related to this event Export sightings related to this event

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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