github - ghsa-rxcf-2w24-j9pq

ghsa-rxcf-2w24-j9pq

Vulnerability from github

Published

2024-05-21 15:31

Modified

2024-05-21 15:31

Details

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

scsi: iscsi: Fix iscsi_task use after free

Commit d39df158518c ("scsi: iscsi: Have abort handler get ref to conn") added iscsi_get_conn()/iscsi_put_conn() calls during abort handling but then also changed the handling of the case where we detect an already completed task where we now end up doing a goto to the common put/cleanup code. This results in a iscsi_task use after free, because the common cleanup code will do a put on the iscsi_task.

This reverts the goto and moves the iscsi_get_conn() to after we've checked if the iscsi_task is valid.

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{
  "affected": [],
  "aliases": [
    "CVE-2021-47427"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-21T15:15:28Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: iscsi: Fix iscsi_task use after free\n\nCommit d39df158518c (\"scsi: iscsi: Have abort handler get ref to conn\")\nadded iscsi_get_conn()/iscsi_put_conn() calls during abort handling but\nthen also changed the handling of the case where we detect an already\ncompleted task where we now end up doing a goto to the common put/cleanup\ncode. This results in a iscsi_task use after free, because the common\ncleanup code will do a put on the iscsi_task.\n\nThis reverts the goto and moves the iscsi_get_conn() to after we\u0027ve checked\nif the iscsi_task is valid.",
  "id": "GHSA-rxcf-2w24-j9pq",
  "modified": "2024-05-21T15:31:45Z",
  "published": "2024-05-21T15:31:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47427"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1642f51ac0d4f2b55d5748094c49ff8f7191b93c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/258aad75c62146453d03028a44f2f1590d58e1f6"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

cve-2021-47427

Vulnerability from cvelistv5

Published

2024-05-21 15:04

Modified

2024-11-04 12:05

Severity ?

Summary

scsi: iscsi: Fix iscsi_task use after free

References

▼	URL	Tags
	https://git.kernel.org/stable/c/1642f51ac0d4f2b55d5748094c49ff8f7191b93c
	https://git.kernel.org/stable/c/258aad75c62146453d03028a44f2f1590d58e1f6

Impacted products

Vendor

Product

Version

▼

Linux

Version: d39df158518c
Version: d39df158518c

Linux

Version: 5.14

Show details on NVD website

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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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