Vulnerability-Lookup

GHSA-C5GM-R7C3-J9CP

Vulnerability from github – Published: 2024-03-03 00:30 – Updated: 2024-12-10 21:30

Details

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

tee: amdtee: fix use-after-free vulnerability in amdtee_close_session

There is a potential race condition in amdtee_close_session that may cause use-after-free in amdtee_open_session. For instance, if a session has refcount == 1, and one thread tries to free this session via:

kref_put(&sess->refcount, destroy_session);

the reference count will get decremented, and the next step would be to call destroy_session(). However, if in another thread, amdtee_open_session() is called before destroy_session() has completed execution, alloc_session() may return 'sess' that will be freed up later in destroy_session() leading to use-after-free in amdtee_open_session.

To fix this issue, treat decrement of sess->refcount and removal of 'sess' from session list in destroy_session() as a critical section, so that it is executed atomically.

Severity

7.0 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2023-52503"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-03-02T22:15:47Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntee: amdtee: fix use-after-free vulnerability in amdtee_close_session\n\nThere is a potential race condition in amdtee_close_session that may\ncause use-after-free in amdtee_open_session. For instance, if a session\nhas refcount == 1, and one thread tries to free this session via:\n\n    kref_put(\u0026sess-\u003erefcount, destroy_session);\n\nthe reference count will get decremented, and the next step would be to\ncall destroy_session(). However, if in another thread,\namdtee_open_session() is called before destroy_session() has completed\nexecution, alloc_session() may return \u0027sess\u0027 that will be freed up\nlater in destroy_session() leading to use-after-free in\namdtee_open_session.\n\nTo fix this issue, treat decrement of sess-\u003erefcount and removal of\n\u0027sess\u0027 from session list in destroy_session() as a critical section, so\nthat it is executed atomically.",
  "id": "GHSA-c5gm-r7c3-j9cp",
  "modified": "2024-12-10T21:30:51Z",
  "published": "2024-03-03T00:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52503"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1680c82929bc14d706065f123dab77f2f1293116"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1c95574350cd63bc3c5c2fa06658010768f2a0ce"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/60c3e7a00db954947c265b55099c21b216f2a05c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/da7ce52a2f6c468946195b116615297d3d113a27"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f4384b3e54ea813868bb81a861bf5b2406e15d8f"
    }
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  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
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}

CVE-2023-52503 (GCVE-0-2023-52503)

Vulnerability from cvelistv5 – Published: 2024-03-02 21:52 – Updated: 2026-08-05 09:10

Title

tee: amdtee: fix use-after-free vulnerability in amdtee_close_session

Summary

In the Linux kernel, the following vulnerability has been resolved: tee: amdtee: fix use-after-free vulnerability in amdtee_close_session There is a potential race condition in amdtee_close_session that may cause use-after-free in amdtee_open_session. For instance, if a session has refcount == 1, and one thread tries to free this session via: kref_put(&sess->refcount, destroy_session); the reference count will get decremented, and the next step would be to call destroy_session(). However, if in another thread, amdtee_open_session() is called before destroy_session() has completed execution, alloc_session() may return 'sess' that will be freed up later in destroy_session() leading to use-after-free in amdtee_open_session. To fix this issue, treat decrement of sess->refcount and removal of 'sess' from session list in destroy_session() as a critical section, so that it is executed atomically.

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 2024-08-08 18:34 UTC

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/da7ce52a2f6c46894…
https://git.kernel.org/stable/c/1680c82929bc14d70…
https://git.kernel.org/stable/c/60c3e7a00db954947…
https://git.kernel.org/stable/c/1c95574350cd63bc3…
https://git.kernel.org/stable/c/f4384b3e54ea81386…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 757cc3e9ff1d72d014096399d6e2bf03974d9da1 , < da7ce52a2f6c468946195b116615297d3d113a27 (git) Affected: 757cc3e9ff1d72d014096399d6e2bf03974d9da1 , < 1680c82929bc14d706065f123dab77f2f1293116 (git) Affected: 757cc3e9ff1d72d014096399d6e2bf03974d9da1 , < 60c3e7a00db954947c265b55099c21b216f2a05c (git) Affected: 757cc3e9ff1d72d014096399d6e2bf03974d9da1 , < 1c95574350cd63bc3c5c2fa06658010768f2a0ce (git) Affected: 757cc3e9ff1d72d014096399d6e2bf03974d9da1 , < f4384b3e54ea813868bb81a861bf5b2406e15d8f (git)
Linux	Linux	Affected: 5.6 Unaffected: 0 , < 5.6 (semver) Unaffected: 5.10.199 , ≤ 5.10.* (semver) Unaffected: 5.15.136 , ≤ 5.15.* (semver) Unaffected: 6.1.59 , ≤ 6.1.* (semver) Unaffected: 6.5.8 , ≤ 6.5.* (semver) Unaffected: 6.6 , ≤ * (original_commit_for_fix)

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JSON

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          "dateUpdated": "2024-08-02T23:03:20.580Z",
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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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