CVE-2026-53160

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.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/07ebe87915d8accdaba20c4f88c5ae430fe62fbb	Patch
https://git.kernel.org/stable/c/0a3b87293fbd34fda651e6aead9964f84b893962	Patch
https://git.kernel.org/stable/c/5b0166112019d1dce30b976ab28fd67f7f0be532	Patch
https://git.kernel.org/stable/c/8b080c89183196fd3e49212f2a1a1c4a29335b9c	Patch
https://git.kernel.org/stable/c/992f121796b7ca83a5a8b93da24e971363206218	Patch
https://git.kernel.org/stable/c/f20f6512ecb75c816e0debf4551a138f098615c4	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc1::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc2::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc3::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc4::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc5::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc6::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc7::::::

History

No history.

Information

Published : 2026-06-25 09:16

Updated : 2026-07-06 16:41

NVD link : CVE-2026-53160

Mitre link : CVE-2026-53160

CVE.ORG link : CVE-2026-53160

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-416

Use After Free

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