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.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
0b70ec82b309a4093106ff399da1911ad23b52d3 affected < 0a3b87293fbd34fda651e6aead9964f84b893962
d7513b47082c08105e837b06cebeb3f07a5fa56f affected < 8b080c89183196fd3e49212f2a1a1c4a29335b9c
802359a52676176b18713e33caa17572ad009057 affected < 5b0166112019d1dce30b976ab28fd67f7f0be532
10df039834f84a297c72ec962c0f9b7c8c5ca31a affected < 992f121796b7ca83a5a8b93da24e971363206218
10df039834f84a297c72ec962c0f9b7c8c5ca31a affected < f20f6512ecb75c816e0debf4551a138f098615c4
10df039834f84a297c72ec962c0f9b7c8c5ca31a affected < 07ebe87915d8accdaba20c4f88c5ae430fe62fbb
f3f59bab68e9bc714f757ab22f3fb36153014043 affected —
6.1.156 affected < 6.1.176
6.6.112 affected < 6.6.143
6.12.53 affected < 6.12.94
6.17.3 affected < 6.18
Linux Linux affected
Version Status Constraints
6.18 affected —
0 unaffected < 6.18
6.1.176 unaffected ≤ 6.1.*
6.6.143 unaffected ≤ 6.6.*
6.12.94 unaffected ≤ 6.12.*
6.18.36 unaffected ≤ 6.18.*
7.0.13 unaffected ≤ 7.0.*
7.1 unaffected ≤ *

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References
Link Providers
https://git.kernel.org/stable/c/07ebe87915d8accdaba20c4f88c5ae430fe62fbb cve-icon
https://git.kernel.org/stable/c/0a3b87293fbd34fda651e6aead9964f84b893962 cve-icon
https://git.kernel.org/stable/c/5b0166112019d1dce30b976ab28fd67f7f0be532 cve-icon
https://git.kernel.org/stable/c/8b080c89183196fd3e49212f2a1a1c4a29335b9c cve-icon
https://git.kernel.org/stable/c/992f121796b7ca83a5a8b93da24e971363206218 cve-icon
https://git.kernel.org/stable/c/f20f6512ecb75c816e0debf4551a138f098615c4 cve-icon
History

Thu, 25 Jun 2026 11:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-416

Thu, 25 Jun 2026 09:15:00 +0000

Type Values Removed Values Added
Description 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.
Title misc: fastrpc: fix use-after-free race in fastrpc_map_create
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-06-25T08:38:42.138Z

Reserved: 2026-06-09T07:44:35.388Z

Link: CVE-2026-53160

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-25T10:45:16Z

Weaknesses