ghsa-x848-x286-ccwf
Vulnerability from github
Published
2024-11-05 18:32
Modified
2024-11-08 21:33
Severity ?
Details
In the Linux kernel, the following vulnerability has been resolved:
net: sched: fix use-after-free in taprio_change()
In 'taprio_change()', 'admin' pointer may become dangling due to sched switch / removal caused by 'advance_sched()', and critical section protected by 'q->current_entry_lock' is too small to prevent from such a scenario (which causes use-after-free detected by KASAN). Fix this by prefer 'rcu_replace_pointer()' over 'rcu_assign_pointer()' to update 'admin' immediately before an attempt to schedule freeing.
{ "affected": [], "aliases": [ "CVE-2024-50127" ], "database_specific": { "cwe_ids": [ "CWE-416" ], "github_reviewed": false, "github_reviewed_at": null, "nvd_published_at": "2024-11-05T18:15:15Z", "severity": "HIGH" }, "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: sched: fix use-after-free in taprio_change()\n\nIn \u0027taprio_change()\u0027, \u0027admin\u0027 pointer may become dangling due to sched\nswitch / removal caused by \u0027advance_sched()\u0027, and critical section\nprotected by \u0027q-\u003ecurrent_entry_lock\u0027 is too small to prevent from such\na scenario (which causes use-after-free detected by KASAN). Fix this\nby prefer \u0027rcu_replace_pointer()\u0027 over \u0027rcu_assign_pointer()\u0027 to update\n\u0027admin\u0027 immediately before an attempt to schedule freeing.", "id": "GHSA-x848-x286-ccwf", "modified": "2024-11-08T21:33:53Z", "published": "2024-11-05T18:32:12Z", "references": [ { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-50127" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/0d4c0d2844e4eac3aed647f948fd7e60eea56a61" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/2240f9376f20f8b6463232b4ca7292569217237f" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/2f868ce6013548a713c431c679ef73747a66fcf3" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/8a283a19026aaae8a773fd8061263cfa315b127f" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/999612996df28d81f163dad530d7f8026e03aec6" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/f504465970aebb2467da548f7c1efbbf36d0f44b" }, { "type": "WEB", "url": "https://git.kernel.org/stable/c/fe371f084073e8672a2d7d46b335c3c060d1e301" } ], "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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Nomenclature
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