github - ghsa-8vjx-3vgx-66mx

ghsa-8vjx-3vgx-66mx

Vulnerability from github

Published

2023-01-11 15:30

Modified

2023-01-19 15:30

Severity ?

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

Details

There exists a use-after-free vulnerability in the Linux kernel through io_uring and the IORING_OP_SPLICE operation. If IORING_OP_SPLICE is missing the IO_WQ_WORK_FILES flag, which signals that the operation won't use current->nsproxy, so its reference counter is not increased. This assumption is not always true as calling io_splice on specific files will call the get_uts function which will use current->nsproxy leading to invalidly decreasing its reference counter later causing the use-after-free vulnerability. We recommend upgrading to version 5.10.160 or above

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{
   affected: [],
   aliases: [
      "CVE-2022-4696",
   ],
   database_specific: {
      cwe_ids: [
         "CWE-416",
         "CWE-763",
      ],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2023-01-11T13:15:00Z",
      severity: "HIGH",
   },
   details: "There exists a use-after-free vulnerability in the Linux kernel through io_uring and the IORING_OP_SPLICE operation. If IORING_OP_SPLICE is missing the IO_WQ_WORK_FILES flag, which signals that the operation won't use current->nsproxy, so its reference counter is not increased. This assumption is not always true as calling io_splice on specific files will call the get_uts function which will use current->nsproxy leading to invalidly decreasing its reference counter later causing the use-after-free vulnerability. We recommend upgrading to version 5.10.160 or above",
   id: "GHSA-8vjx-3vgx-66mx",
   modified: "2023-01-19T15:30:31Z",
   published: "2023-01-11T15:30:42Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2022-4696",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.10.y&id=75454b4bbfc7e6a4dd8338556f36ea9107ddf61a",
      },
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      },
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   severity: [
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         score: "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
         type: "CVSS_V3",
      },
   ],
}

CVE-2022-4696 (GCVE-0-2022-4696)

Vulnerability from cvelistv5

Published

2023-01-11 12:33

Modified

2024-08-03 01:48

Severity ?

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

Summary

References

▼	URL	Tags
	https://kernel.dance/#75454b4bbfc7e6a4dd8338556f36ea9107ddf61a
	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.10.y&id=75454b4bbfc7e6a4dd8338556f36ea9107ddf61a

Impacted products

	Vendor	Product	Version
	Linux	Linux Kernel	Version: 5.7-rc1 <

Show details on NVD website

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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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