Linux Kernel up to 6.18.38/7.1.3/7.2-rc2 rust_binder memory leak

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$0-$5k1.60

Summaryinfo

A vulnerability labeled as critical has been found in Linux Kernel up to 6.18.38/7.1.3/7.2-rc2. This impacts an unknown function of the component rust_binder. Executing a manipulation can lead to memory leak. This vulnerability is registered as CVE-2026-64466. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 6.18.38/7.1.3/7.2-rc2 and classified as critical. This vulnerability affects an unknown part of the component rust_binder. The manipulation with an unknown input leads to a memory leak vulnerability. The CWE definition for the vulnerability is CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: rust_binder: clear freeze listener on node removal Generally userspace is supposed to explicitly clear freeze listeners before they drop the refcount on the node ref to zero, but there's nothing forcing that. Currently, in this scenario the freeze listener remains in the freeze_listeners rbtree and in the remote node's freeze listener list, even though the ref for which the listener is registered is gone. This could potentially lead to a memory leak due to a refcount cycle. Thus, remove the freeze listener in this scenario.

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2026-64466 since 07/19/2026. The exploitation appears to be easy. The attack can be initiated remotely. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 07/25/2026). The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading to version 6.18.39, 7.1.4 or 7.2-rc3 eliminates this vulnerability. Applying the patch 91b27f8172cdbf265240104772fd042a461a7767/0644da3621ddd8e146280675a2a31d1e06634a1d/bc4a9828897871ff3e5a1f8a1d346decbf4ee95e is able to eliminate this problem.

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Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory leak
CWE: CWE-401 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.18.39/7.1.4/7.2-rc3
Patch: 91b27f8172cdbf265240104772fd042a461a7767/0644da3621ddd8e146280675a2a31d1e06634a1d/bc4a9828897871ff3e5a1f8a1d346decbf4ee95e

Timelineinfo

07/19/2026 CVE reserved
07/25/2026 +6 days Advisory disclosed
07/25/2026 +0 days VulDB entry created
07/25/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-64466 (🔒)
GCVE (CVE): GCVE-0-2026-64466
GCVE (VulDB): GCVE-100-383260

Entryinfo

Created: 07/25/2026 18:59
Changes: 07/25/2026 18:59 (58)
Complete: 🔍
Cache ID: 216::103

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