What is the CVSS score of CVE-2026-53160?

CVE-2026-53160 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.2%.

Which versions of Linux are affected by CVE-2026-53160?

CVE-2026-53160 is a privilege escalation vulnerability in the Linux kernel's fastrpc driver with no public exploit identified at time of analysis.. A patch is available.

How to fix or mitigate CVE-2026-53160?

Within 24 hours: identify all Linux systems with fastrpc driver enabled and document current kernel versions. Within 7 days: deploy vendor-released kernel patches to all affected systems, prioritizing production infrastructure. Within 30 days: verify patch deployment across Linux infrastructure through kernel version auditing and automated compliance scanning.

Linux CVE-2026-53160

EUVD-2026-39251 HIGH

Use After Free (CWE-416)

2026-06-25 416baaa9-dc9f-4396-8d5f-8c081fb06d67

GHSA-4wgj-8vww-9v4h

Linux Information Disclosure Use After Free Memory Corruption

7.8

CVSS 3.1 · Vendor: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Severity by source

Vendor (416baaa9-dc9f-4396-8d5f-8c081fb06d67) PRIMARY

7.8 HIGH

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from Vendor (416baaa9-dc9f-4396-8d5f-8c081fb06d67) · only source for this CVE.

CVSS VectorVendor: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Jun 28, 2026 - 09:17 vuln.today

CVSS changed

Jun 28, 2026 - 08:22 NVD

7.8 (HIGH)

Patch available

Jun 25, 2026 - 10:32 EUVD

CVE Published

Jun 25, 2026 - 09:16 cve.org

UNKNOWN (no severity yet)

CVE Published

Jun 25, 2026 - 09:16 cve.org

HIGH 7.8

DescriptionCVE.org

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.

AnalysisAI

Local privilege escalation and memory corruption in the Linux kernel's fastrpc misc driver allows an attacker with local low-privileged access to a FastRPC device to trigger a use-after-free in fastrpc_map_create by racing a concurrent MEM_UNMAP against map lookup. The flaw stems from fastrpc_map_lookup returning an unprotected raw pointer after dropping fl->lock, which a concurrent unmap can free before the reference is taken. …