github - ghsa-j2qm-vfcf-p3gj

ghsa-j2qm-vfcf-p3gj

Vulnerability from github

Published

2024-06-20 12:31

Modified

2024-06-20 12:31

Details

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

drm/vmwgfx: Fix stale file descriptors on failed usercopy

A failing usercopy of the fence_rep object will lead to a stale entry in the file descriptor table as put_unused_fd() won't release it. This enables userland to refer to a dangling 'file' object through that still valid file descriptor, leading to all kinds of use-after-free exploitation scenarios.

Fix this by deferring the call to fd_install() until after the usercopy has succeeded.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-48771"
  ],
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    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-06-20T12:15:15Z",
    "severity": null
  },
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  "id": "GHSA-j2qm-vfcf-p3gj",
  "modified": "2024-06-20T12:31:22Z",
  "published": "2024-06-20T12:31:22Z",
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cve-2022-48771

Vulnerability from cvelistv5

Published

2024-06-20 11:13

Modified

2024-12-19 08:07

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Fix stale file descriptors on failed usercopy A failing usercopy of the fence_rep object will lead to a stale entry in the file descriptor table as put_unused_fd() won't release it. This enables userland to refer to a dangling 'file' object through that still valid file descriptor, leading to all kinds of use-after-free exploitation scenarios. Fix this by deferring the call to fd_install() until after the usercopy has succeeded.

References

▼	URL	Tags
	https://git.kernel.org/stable/c/e8d092a62449dcfc73517ca43963d2b8f44d0516
	https://git.kernel.org/stable/c/0008a0c78fc33a84e2212a7c04e6b21a36ca6f4d
	https://git.kernel.org/stable/c/84b1259fe36ae0915f3d6ddcea6377779de48b82
	https://git.kernel.org/stable/c/ae2b20f27732fe92055d9e7b350abc5cdf3e2414
	https://git.kernel.org/stable/c/6066977961fc6f437bc064f628cf9b0e4571c56c
	https://git.kernel.org/stable/c/1d833b27fb708d6fdf5de9f6b3a8be4bd4321565
	https://git.kernel.org/stable/c/a0f90c8815706981c483a652a6aefca51a5e191c

Impacted products

Vendor

Product

Version

▼

Linux

Version: c906965dee22d5e95d0651759ba107b420212a9f
Version: c906965dee22d5e95d0651759ba107b420212a9f
Version: c906965dee22d5e95d0651759ba107b420212a9f
Version: c906965dee22d5e95d0651759ba107b420212a9f
Version: c906965dee22d5e95d0651759ba107b420212a9f
Version: c906965dee22d5e95d0651759ba107b420212a9f
Version: c906965dee22d5e95d0651759ba107b420212a9f

Linux

Version: 4.14

Show details on NVD website

JSON

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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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