github - ghsa-whgw-qcmx-gp47

GHSA-WHGW-QCMX-GP47

Vulnerability from github – Published: 2024-04-28 15:30 – Updated: 2025-03-21 18:31

Details

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

bnxt: prevent skb UAF after handing over to PTP worker

When reading the timestamp is required bnxt_tx_int() hands over the ownership of the completed skb to the PTP worker. The skb should not be used afterwards, as the worker may run before the rest of our code and free the skb, leading to a use-after-free.

Since dev_kfree_skb_any() accepts NULL make the loss of ownership more obvious and set skb to NULL.

Severity ?

7.8 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2022-48637"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-04-28T13:15:06Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbnxt: prevent skb UAF after handing over to PTP worker\n\nWhen reading the timestamp is required bnxt_tx_int() hands\nover the ownership of the completed skb to the PTP worker.\nThe skb should not be used afterwards, as the worker may\nrun before the rest of our code and free the skb, leading\nto a use-after-free.\n\nSince dev_kfree_skb_any() accepts NULL make the loss of\nownership more obvious and set skb to NULL.",
  "id": "GHSA-whgw-qcmx-gp47",
  "modified": "2025-03-21T18:31:25Z",
  "published": "2024-04-28T15:30:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48637"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/08483e4c0c83b221b8891434a04cec405dee94a6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/32afa1f23e42cc635ccf4c39f24514d03d1e8338"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c31f26c8f69f776759cbbdfb38e40ea91aa0dd65"
    }
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  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-48637 (GCVE-0-2022-48637)

Vulnerability from cvelistv5 – Published: 2024-04-28 12:59 – Updated: 2025-05-04 08:20

Summary

In the Linux kernel, the following vulnerability has been resolved: bnxt: prevent skb UAF after handing over to PTP worker When reading the timestamp is required bnxt_tx_int() hands over the ownership of the completed skb to the PTP worker. The skb should not be used afterwards, as the worker may run before the rest of our code and free the skb, leading to a use-after-free. Since dev_kfree_skb_any() accepts NULL make the loss of ownership more obvious and set skb to NULL.

Severity ?

No CVSS data available.

CWE

CWE-416 - Use After Free

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/08483e4c0c83b221b…
	https://git.kernel.org/stable/c/32afa1f23e42cc635…
	https://git.kernel.org/stable/c/c31f26c8f69f77675…

Impacted products

Vendor

Product

Version

Linux

Affected: 83bb623c968e7351aee5111547693f95f330dc5a , < 08483e4c0c83b221b8891434a04cec405dee94a6 (git)
Affected: 83bb623c968e7351aee5111547693f95f330dc5a , < 32afa1f23e42cc635ccf4c39f24514d03d1e8338 (git)
Affected: 83bb623c968e7351aee5111547693f95f330dc5a , < c31f26c8f69f776759cbbdfb38e40ea91aa0dd65 (git)

Linux

Affected: 5.14
Unaffected: 0 , < 5.14 (semver)
Unaffected: 5.15.71 , ≤ 5.15.* (semver)
Unaffected: 5.19.12 , ≤ 5.19.* (semver)
Unaffected: 6.0 , ≤ * (original_commit_for_fix)

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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-WHGW-QCMX-GP47

CVE-2022-48637 (GCVE-0-2022-48637)

Tags

Sightings

Nomenclature