ghsa-c5gm-r7c3-j9cp
Vulnerability from github
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.
{
"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"
}
],
"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"
}
]
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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