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

Vulnerability from cvelistv5 – Published: 2024-03-02 21:52 – Updated: 2026-05-11 19:28
VLAI?
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 ?
No CVSS data available.
Assigner
References
Impacted 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)
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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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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.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: tee: amdtee: corrige la vulnerabilidad de Use After Free en amdtee_close_session Existe una posible condici\u00f3n de ejecuci\u00f3n en amdtee_close_session que puede causar el Use After Free en amdtee_open_session. Por ejemplo, si una sesi\u00f3n tiene refcount == 1 y un hilo intenta liberar esta sesi\u00f3n mediante: kref_put(\u0026amp;sess-\u0026gt;refcount, destroy_session); el recuento de referencias disminuir\u00e1 y el siguiente paso ser\u00eda llamar a destroy_session(). Sin embargo, si en otro hilo, se llama a amdtee_open_session() antes de que destroy_session() haya completado la ejecuci\u00f3n, alloc_session() puede devolver \u0027sess\u0027 que se liberar\u00e1 m\u00e1s tarde en destroy_session(), lo que conducir\u00e1 a Use After Free en amdtee_open_session. Para solucionar este problema, trate la disminuci\u00f3n de sess-\u0026gt;refcount y la eliminaci\u00f3n de \u0027sess\u0027 de la lista de sesiones en destroy_session() como una secci\u00f3n cr\u00edtica, para que se ejecute de forma at\u00f3mica.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.0,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.0,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.6\",\"versionEndExcluding\":\"5.10.199\",\"matchCriteriaId\":\"7BEA3A23-5DDA-4C82-91AB-12FA1B3FD828\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.136\",\"matchCriteriaId\":\"B1FA5161-3AC0-44DF-B1F7-93A070F2B1E7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.59\",\"matchCriteriaId\":\"96EA633C-1F3E-41C5-A13A-155C55A1F273\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.5.8\",\"matchCriteriaId\":\"AD4E15B4-2591-4A3A-B2A2-7FEAECD5027D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.6:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"84267A4F-DBC2-444F-B41D-69E15E1BEC97\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.6:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"FB440208-241C-4246-9A83-C1715C0DAA6C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.6:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"0DC421F1-3D5A-4BEF-BF76-4E468985D20B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.6:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"00AB783B-BE05-40E8-9A55-6AA457D95031\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.6:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"E7C78D0A-C4A2-4D41-B726-8979E33AD0F9\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1680c82929bc14d706065f123dab77f2f1293116\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/1c95574350cd63bc3c5c2fa06658010768f2a0ce\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/60c3e7a00db954947c265b55099c21b216f2a05c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/da7ce52a2f6c468946195b116615297d3d113a27\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f4384b3e54ea813868bb81a861bf5b2406e15d8f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/1680c82929bc14d706065f123dab77f2f1293116\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/1c95574350cd63bc3c5c2fa06658010768f2a0ce\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/60c3e7a00db954947c265b55099c21b216f2a05c\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/da7ce52a2f6c468946195b116615297d3d113a27\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f4384b3e54ea813868bb81a861bf5b2406e15d8f\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]}]}}",
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}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.