Vulnerability-Lookup

GHSA-28CG-R647-J4CW

Vulnerability from github – Published: 2024-02-28 09:30 – Updated: 2024-12-06 15:31

Details

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

ethernet:enic: Fix a use after free bug in enic_hard_start_xmit

In enic_hard_start_xmit, it calls enic_queue_wq_skb(). Inside enic_queue_wq_skb, if some error happens, the skb will be freed by dev_kfree_skb(skb). But the freed skb is still used in skb_tx_timestamp(skb).

My patch makes enic_queue_wq_skb() return error and goto spin_unlock() incase of error. The solution is provided by Govind. See https://lkml.org/lkml/2021/4/30/961.

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-2021-46998"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-02-28T09:15:38Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nethernet:enic: Fix a use after free bug in enic_hard_start_xmit\n\nIn enic_hard_start_xmit, it calls enic_queue_wq_skb(). Inside\nenic_queue_wq_skb, if some error happens, the skb will be freed\nby dev_kfree_skb(skb). But the freed skb is still used in\nskb_tx_timestamp(skb).\n\nMy patch makes enic_queue_wq_skb() return error and goto spin_unlock()\nincase of error. The solution is provided by Govind.\nSee https://lkml.org/lkml/2021/4/30/961.",
  "id": "GHSA-28cg-r647-j4cw",
  "modified": "2024-12-06T15:31:19Z",
  "published": "2024-02-28T09:30:37Z",
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CVE-2021-46998 (GCVE-0-2021-46998)

Vulnerability from cvelistv5 – Published: 2024-02-28 08:13 – Updated: 2026-08-05 08:45

Title

ethernet:enic: Fix a use after free bug in enic_hard_start_xmit

Summary

In the Linux kernel, the following vulnerability has been resolved: ethernet:enic: Fix a use after free bug in enic_hard_start_xmit In enic_hard_start_xmit, it calls enic_queue_wq_skb(). Inside enic_queue_wq_skb, if some error happens, the skb will be freed by dev_kfree_skb(skb). But the freed skb is still used in skb_tx_timestamp(skb). My patch makes enic_queue_wq_skb() return error and goto spin_unlock() incase of error. The solution is provided by Govind. See https://lkml.org/lkml/2021/4/30/961.

Severity

7.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-10 16:00 UTC

Assigner

Linux mitre root

References

6 references

URL	Tags
https://git.kernel.org/stable/c/25a87b1f566b5eb2a…
https://git.kernel.org/stable/c/f7f6f07774091a6dd…
https://git.kernel.org/stable/c/7afdd6aba95c8a526…
https://git.kernel.org/stable/c/6892396ebf04ea2c0…
https://git.kernel.org/stable/c/d90529392aaf498da…
https://git.kernel.org/stable/c/643001b47adc844ae…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: fb7516d42478ebc8e2f00efb76ef96f7b68fd8d3 , < 25a87b1f566b5eb2af2857a928f0e2310d900976 (git) Affected: fb7516d42478ebc8e2f00efb76ef96f7b68fd8d3 , < f7f6f07774091a6ddd98500b85386c3c6afb30d3 (git) Affected: fb7516d42478ebc8e2f00efb76ef96f7b68fd8d3 , < 7afdd6aba95c8a526038e7abe283eeac3e4320f1 (git) Affected: fb7516d42478ebc8e2f00efb76ef96f7b68fd8d3 , < 6892396ebf04ea2c021d80e10f4075e014cd7cc3 (git) Affected: fb7516d42478ebc8e2f00efb76ef96f7b68fd8d3 , < d90529392aaf498dafa95d212295d64b2cea4e24 (git) Affected: fb7516d42478ebc8e2f00efb76ef96f7b68fd8d3 , < 643001b47adc844ae33510c4bb93c236667008a3 (git)
Linux	Linux	Affected: 4.16 Unaffected: 0 , < 4.16 (semver) Unaffected: 4.19.191 , ≤ 4.19.* (semver) Unaffected: 5.4.120 , ≤ 5.4.* (semver) Unaffected: 5.10.38 , ≤ 5.10.* (semver) Unaffected: 5.11.22 , ≤ 5.11.* (semver) Unaffected: 5.12.5 , ≤ 5.12.* (semver) Unaffected: 5.13 , ≤ * (original_commit_for_fix)

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Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

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