ghsa-3j3g-6r9w-9pc8
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
misc: fastrpc: Fix use-after-free race condition for maps
It is possible that in between calling fastrpc_map_get() until map->fl->lock is taken in fastrpc_free_map(), another thread can call fastrpc_map_lookup() and get a reference to a map that is about to be deleted.
Rewrite fastrpc_map_get() to only increase the reference count of a map if it's non-zero. Propagate this to callers so they can know if a map is about to be deleted.
Fixes this warning: refcount_t: addition on 0; use-after-free. WARNING: CPU: 5 PID: 10100 at lib/refcount.c:25 refcount_warn_saturate ... Call trace: refcount_warn_saturate [fastrpc_map_get inlined] [fastrpc_map_lookup inlined] fastrpc_map_create fastrpc_internal_invoke fastrpc_device_ioctl __arm64_sys_ioctl invoke_syscall
{
"affected": [],
"aliases": [
"CVE-2022-48872"
],
"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 race condition for maps\n\nIt is possible that in between calling fastrpc_map_get() until\nmap-\u003efl-\u003elock is taken in fastrpc_free_map(), another thread can call\nfastrpc_map_lookup() and get a reference to a map that is about to be\ndeleted.\n\nRewrite fastrpc_map_get() to only increase the reference count of a map\nif it\u0027s non-zero. Propagate this to callers so they can know if a map is\nabout to be deleted.\n\nFixes this warning:\nrefcount_t: addition on 0; use-after-free.\nWARNING: CPU: 5 PID: 10100 at lib/refcount.c:25 refcount_warn_saturate\n...\nCall trace:\n refcount_warn_saturate\n [fastrpc_map_get inlined]\n [fastrpc_map_lookup inlined]\n fastrpc_map_create\n fastrpc_internal_invoke\n fastrpc_device_ioctl\n __arm64_sys_ioctl\n invoke_syscall",
"id": "GHSA-3j3g-6r9w-9pc8",
"modified": "2024-09-06T15:32:56Z",
"published": "2024-08-21T09:31:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48872"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/079c78c68714f7d8d58e66c477b0243b31806907"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/556dfdb226ce1e5231d8836159b23f8bb0395bf4"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/61a0890cb95afec5c8a2f4a879de2b6220984ef1"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/96b328d119eca7563c1edcc4e1039a62e6370ecb"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b171d0d2cf1b8387c72c8d325c5d5746fa271e39"
}
],
"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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- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.