github - ghsa-hpj2-q4fg-98gf

ghsa-hpj2-q4fg-98gf

Vulnerability from github

Published

2024-05-22 09:31

Modified

2024-05-22 09:31

Details

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

ice: Avoid crash from unnecessary IDA free

In the remove path, there is an attempt to free the aux_idx IDA whether it was allocated or not. This can potentially cause a crash when unloading the driver on systems that do not initialize support for RDMA. But, this free cannot be gated by the status bit for RDMA, since it is allocated if the driver detects support for RDMA at probe time, but the driver can enter into a state where RDMA is not supported after the IDA has been allocated at probe time and this would lead to a memory leak.

Initialize aux_idx to an invalid value and check for a valid value when unloading to determine if an IDA free is necessary.

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{
  "affected": [],
  "aliases": [
    "CVE-2021-47453"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
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    "nvd_published_at": "2024-05-22T07:15:10Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nice: Avoid crash from unnecessary IDA free\n\nIn the remove path, there is an attempt to free the aux_idx IDA whether\nit was allocated or not.  This can potentially cause a crash when\nunloading the driver on systems that do not initialize support for RDMA.\nBut, this free cannot be gated by the status bit for RDMA, since it is\nallocated if the driver detects support for RDMA at probe time, but the\ndriver can enter into a state where RDMA is not supported after the IDA\nhas been allocated at probe time and this would lead to a memory leak.\n\nInitialize aux_idx to an invalid value and check for a valid value when\nunloading to determine if an IDA free is necessary.",
  "id": "GHSA-hpj2-q4fg-98gf",
  "modified": "2024-05-22T09:31:45Z",
  "published": "2024-05-22T09:31:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47453"
    },
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}

cve-2021-47453

Vulnerability from cvelistv5

Published

2024-05-22 06:19

Modified

2024-12-19 07:42

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: ice: Avoid crash from unnecessary IDA free In the remove path, there is an attempt to free the aux_idx IDA whether it was allocated or not. This can potentially cause a crash when unloading the driver on systems that do not initialize support for RDMA. But, this free cannot be gated by the status bit for RDMA, since it is allocated if the driver detects support for RDMA at probe time, but the driver can enter into a state where RDMA is not supported after the IDA has been allocated at probe time and this would lead to a memory leak. Initialize aux_idx to an invalid value and check for a valid value when unloading to determine if an IDA free is necessary.

References

▼	URL	Tags
	https://git.kernel.org/stable/c/777682e59840e24e6c5672197e6ffbcf4bff823b
	https://git.kernel.org/stable/c/73e30a62b19b9fbb4e6a3465c59da186630d5f2e

Impacted products

Vendor

Product

Version

▼

Linux

Version: d25a0fc41c1f927bb914e72a03c1898052557406
Version: d25a0fc41c1f927bb914e72a03c1898052557406

Linux

Version: 5.14

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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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