Vulnerability-Lookup

CVE-2023-53543 (GCVE-0-2023-53543)

Vulnerability from cvelistv5 – Published: 2025-10-04 15:16 – Updated: 2026-06-01 16:04

Title

vdpa: Add max vqp attr to vdpa_nl_policy for nlattr length check

Summary

In the Linux kernel, the following vulnerability has been resolved: vdpa: Add max vqp attr to vdpa_nl_policy for nlattr length check The vdpa_nl_policy structure is used to validate the nlattr when parsing the incoming nlmsg. It will ensure the attribute being described produces a valid nlattr pointer in info->attrs before entering into each handler in vdpa_nl_ops. That is to say, the missing part in vdpa_nl_policy may lead to illegal nlattr after parsing, which could lead to OOB read just like CVE-2023-3773. This patch adds the missing nla_policy for vdpa max vqp attr to avoid such bugs.

Severity

7.8 (High)


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

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/baed19c108ac82874…
https://git.kernel.org/stable/c/ff71709445ac033e6…
https://git.kernel.org/stable/c/ea65e8b5e6b1a34de…
https://git.kernel.org/stable/c/5d6ba607d6cb5c58a…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: 447092100c7e71aa20469a270fcee441d807ed58 , < baed19c108ac8287425b93a44985bbe9a0b1af8d (git) Affected: ad69dd0bf26b88ec6ab26f8bbe5cd74fbed7672a , < ff71709445ac033e6e250d971683110e4781c068 (git) Affected: ad69dd0bf26b88ec6ab26f8bbe5cd74fbed7672a , < ea65e8b5e6b1a34deda7564f09c90e9e80db436a (git) Affected: ad69dd0bf26b88ec6ab26f8bbe5cd74fbed7672a , < 5d6ba607d6cb5c58a4ddf33381e18c83dbb4098f (git) Affected: 5.15.198 , < 5.15.209 (semver)	guessed
Linux	Linux	Affected: 5.16 Unaffected: 0 , < 5.16 (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.47 , ≤ 6.1.* (semver) Unaffected: 6.4.12 , ≤ 6.4.* (semver) Unaffected: 6.5 , ≤ * (original_commit_for_fix)	guessed

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    "redhat_vex": {
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      "cve": "CVE-2023-53543",
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      "status": "interim",
      "title": "SUSE CVE CVE-2023-53543",
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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.
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CVE-2023-53543 (GCVE-0-2023-53543)

Tags

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Nomenclature

Related by attack behaviour