CVE-2026-53160 (GCVE-0-2026-53160)
Vulnerability from cvelistv5 – Published: 2026-06-25 08:38 – Updated: 2026-06-28 06:39
VLAI?
Title
misc: fastrpc: fix use-after-free race in fastrpc_map_create
Summary
In the Linux kernel, the following vulnerability has been resolved:
misc: fastrpc: fix use-after-free race in fastrpc_map_create
fastrpc_map_lookup returns a raw pointer after releasing fl->lock. The
caller fastrpc_map_create then calls fastrpc_map_get (kref_get_unless_zero)
on this unprotected pointer. A concurrent MEM_UNMAP can free the map
between the lock release and the kref operation, resulting in a
use-after-free on the freed slab object.
Restore the take_ref parameter to fastrpc_map_lookup so the reference
is acquired atomically under fl->lock before the pointer is exposed to
the caller.
Severity ?
7.8 (High)
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux |
Affected:
0b70ec82b309a4093106ff399da1911ad23b52d3 , < 0a3b87293fbd34fda651e6aead9964f84b893962
(git)
Affected: d7513b47082c08105e837b06cebeb3f07a5fa56f , < 8b080c89183196fd3e49212f2a1a1c4a29335b9c (git) Affected: 802359a52676176b18713e33caa17572ad009057 , < 5b0166112019d1dce30b976ab28fd67f7f0be532 (git) Affected: 10df039834f84a297c72ec962c0f9b7c8c5ca31a , < 992f121796b7ca83a5a8b93da24e971363206218 (git) Affected: 10df039834f84a297c72ec962c0f9b7c8c5ca31a , < f20f6512ecb75c816e0debf4551a138f098615c4 (git) Affected: 10df039834f84a297c72ec962c0f9b7c8c5ca31a , < 07ebe87915d8accdaba20c4f88c5ae430fe62fbb (git) Affected: f3f59bab68e9bc714f757ab22f3fb36153014043 (git) Affected: 6.1.156 , < 6.1.176 (semver) Affected: 6.6.112 , < 6.6.143 (semver) Affected: 6.12.53 , < 6.12.94 (semver) Affected: 6.17.3 , < 6.18 (semver) |
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{
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]
}
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: fastrpc: fix use-after-free race in fastrpc_map_create\n\nfastrpc_map_lookup returns a raw pointer after releasing fl-\u003elock. The\ncaller fastrpc_map_create then calls fastrpc_map_get (kref_get_unless_zero)\non this unprotected pointer. A concurrent MEM_UNMAP can free the map\nbetween the lock release and the kref operation, resulting in a\nuse-after-free on the freed slab object.\n\nRestore the take_ref parameter to fastrpc_map_lookup so the reference\nis acquired atomically under fl-\u003elock before the pointer is exposed to\nthe caller."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-28T06:39:36.143Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
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"url": "https://git.kernel.org/stable/c/0a3b87293fbd34fda651e6aead9964f84b893962"
},
{
"url": "https://git.kernel.org/stable/c/8b080c89183196fd3e49212f2a1a1c4a29335b9c"
},
{
"url": "https://git.kernel.org/stable/c/5b0166112019d1dce30b976ab28fd67f7f0be532"
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{
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{
"url": "https://git.kernel.org/stable/c/f20f6512ecb75c816e0debf4551a138f098615c4"
},
{
"url": "https://git.kernel.org/stable/c/07ebe87915d8accdaba20c4f88c5ae430fe62fbb"
}
],
"title": "misc: fastrpc: fix use-after-free race in fastrpc_map_create",
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"cveId": "CVE-2026-53160",
"datePublished": "2026-06-25T08:38:42.138Z",
"dateReserved": "2026-06-09T07:44:35.388Z",
"dateUpdated": "2026-06-28T06:39:36.143Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
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.
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