github - ghsa-rx63-pxf9-gqg8

GHSA-RX63-PXF9-GQG8

Vulnerability from github – Published: 2022-05-24 17:16 – Updated: 2022-05-24 17:16

Details

In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfs_btrfs_ioctl_fd_replace() calls fdget(oldfd), then without further checks passes the resulting file into shiftfs_real_fdget(), which casts file->private_data, a void that points to a filesystem-dependent type, to a "struct shiftfs_file_info *". As the private_data is not required to be a pointer, an attacker can use this to cause a denial of service or possibly execute arbitrary code.

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{
  "affected": [],
  "aliases": [
    "CVE-2019-15792"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-04-24T00:15:00Z",
    "severity": "MODERATE"
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  "id": "GHSA-rx63-pxf9-gqg8",
  "modified": "2022-05-24T17:16:24Z",
  "published": "2022-05-24T17:16:24Z",
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CVE-2019-15792 (GCVE-0-2019-15792)

Vulnerability from cvelistv5 – Published: 2020-04-23 23:55 – Updated: 2024-09-16 23:41

Summary

In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfs_btrfs_ioctl_fd_replace() calls fdget(oldfd), then without further checks passes the resulting file* into shiftfs_real_fdget(), which casts file->private_data, a void* that points to a filesystem-dependent type, to a "struct shiftfs_file_info *". As the private_data is not required to be a pointer, an attacker can use this to cause a denial of service or possibly execute arbitrary code.

Severity ?

7.1 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

CWE

CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')

Assigner

canonical

References

URL

Tags

	https://usn.ubuntu.com/usn/usn-4183-1	x_refsource_MISC
	https://usn.ubuntu.com/usn/usn-4184-1	x_refsource_MISC
	https://git.launchpad.net/~ubuntu-kernel/ubuntu/+…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	Ubuntu	Shiftfs in the Linux kernel	Affected: 5.3.0-11.12 , < 5.3 kernel* (custom) Affected: 5.0 kernel , < 5.0.0-35.38 (custom)

Credits

Jann Horn of Google Project Zero

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JSON

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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-RX63-PXF9-GQG8

CVE-2019-15792 (GCVE-0-2019-15792)

Tags

Sightings

Nomenclature