ghsa-5v94-m7ff-m26p
Vulnerability from github
Published
2024-08-21 09:31
Modified
2024-08-29 03:30
Severity ?
Details
In the Linux kernel, the following vulnerability has been resolved:
misc: fastrpc: Fix use-after-free and race in fastrpc_map_find
Currently, there is a race window between the point when the mutex is unlocked in fastrpc_map_lookup and the reference count increasing (fastrpc_map_get) in fastrpc_map_find, which can also lead to use-after-free.
So lets merge fastrpc_map_find into fastrpc_map_lookup which allows us to both protect the maps list by also taking the &fl->lock spinlock and the reference count, since the spinlock will be released only after. Add take_ref argument to make this suitable for all callers.
{ "affected": [], "aliases": [ "CVE-2022-48874" ], "database_specific": { "cwe_ids": [ "CWE-416" ], "github_reviewed": false, "github_reviewed_at": null, "nvd_published_at": "2024-08-21T07:15:04Z", "severity": "HIGH" }, "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: fastrpc: Fix use-after-free and race in fastrpc_map_find\n\nCurrently, there is a race window between the point when the mutex is\nunlocked in fastrpc_map_lookup and the reference count increasing\n(fastrpc_map_get) in fastrpc_map_find, which can also lead to\nuse-after-free.\n\nSo lets merge fastrpc_map_find into fastrpc_map_lookup which allows us\nto both protect the maps list by also taking the \u0026fl-\u003elock spinlock and\nthe reference count, since the spinlock will be released only after.\nAdd take_ref argument to make this suitable for all callers.", "id": "GHSA-5v94-m7ff-m26p", "modified": "2024-08-29T03:30:48Z", "published": "2024-08-21T09:31:31Z", "references": [ { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48874" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/9446fa1683a7e3937d9970248ced427c1983a1c5" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/a50c5c25b6e7d2824698c0e6385f882a18f4a498" } ], "schema_version": "1.4.0", "severity": [ { "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "type": "CVSS_V3" } ] }
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Sightings
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