Search/CVE-2026-53294

● CVE — High

CVE-2026-53294

VendorlinuxProductlinux kernelDiscoveredJun 26, 2026UpdatedJul 8, 2026

In the Linux kernel, the following vulnerability has been resolved: mailbox: mailbox-test: don't free the reused channel The RX channel can be aliased to the TX channel if it has a different MMIO. This special case needs to be handled when freeing the channels otherwise a double-free occurs.

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CVSS v3.1

7.8 HIGH

EPSS

0.18%

probability of exploitation in 30 days

CISA KEV

Not listed

no confirmed exploitation reported

News coverage

sources referencing this CVE

Related IOCs

seen in the same coverage

Intelligence Reports1

1 intelligence report available

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EPSS Trend

Aug 26, 2026 → Sep 25, 2026

● 0.00pp

0.18% → 0.18% over 3 tracked changes

CVSS v3.1 Detail

Attack VectorLOCAL

Attack ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

ScopeUNCHANGED

ConfidentialityHIGH

IntegrityHIGH

AvailabilityHIGH

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

Connections

39 relationships

linux kernel

source

Timeline

disclosure → media coverage

Jun 26, 2026

Disclosure — published as a CVE record. · last revised by NVD Jul 8, 2026

Jul 20, 2026

ubuntu.com reports: USN-8566-1: Linux kernel vulnerabilities

Jul 20, 2026

ubuntu.com reports: USN-8567-1: Linux kernel vulnerabilities

Jul 20, 2026

ubuntu.com reports: USN-8568-1: Linux kernel (OEM) vulnerabilities

Jul 20, 2026

ubuntu.com reports: USN-8569-1: Linux kernel (HWE) vulnerabilities

Jul 21, 2026

ubuntu.com reports: USN-8574-1: Linux kernel (GCP FIPS) vulnerabilities

Jul 21, 2026

ubuntu.com reports: USN-8575-1: Linux kernel vulnerabilities

Jul 21, 2026

ubuntu.com reports: USN-8576-1: Linux kernel (NVIDIA Tegra) vulnerabilities

Jul 23, 2026

ubuntu.com reports: USN-8593-1: Linux kernel vulnerabilities

Jul 23, 2026

ubuntu.com reports: USN-8574-2: Linux kernel vulnerabilities

Jul 23, 2026

ubuntu.com reports: USN-8595-1: Linux kernel (Oracle) vulnerabilities

Jul 23, 2026

ubuntu.com reports: USN-8596-1: Linux kernel (NVIDIA) vulnerabilities

Jul 23, 2026

ubuntu.com reports: USN-8575-2: Linux kernel vulnerabilities

Jul 23, 2026

ubuntu.com reports: USN-8576-2: Linux kernel (NVIDIA Tegra) vulnerabilities

Jul 24, 2026

ubuntu.com reports: USN-8603-1: Linux kernel (Azure) vulnerabilities

Jul 24, 2026

ubuntu.com reports: USN-8595-2: Linux kernel (AWS) vulnerabilities

Jul 24, 2026

ubuntu.com reports: USN-8606-1: Linux kernel (Azure) vulnerabilities

Jul 24, 2026

ubuntu.com reports: USN-8607-1: Linux kernel (Azure CVM) vulnerabilities

Jul 24, 2026

ubuntu.com reports: USN-8608-1: Linux kernel (Azure FIPS) vulnerabilities

Jul 24, 2026

ubuntu.com reports: USN-8609-1: Linux kernel (Azure CVM) vulnerabilities

Jul 24, 2026

ubuntu.com reports: USN-8575-3: Linux kernel vulnerabilities

Jul 24, 2026

ubuntu.com reports: USN-8610-1: Linux kernel (Azure CVM) vulnerabilities

Jul 28, 2026

ubuntu.com reports: USN-8618-1: Linux kernel vulnerabilities

Jul 28, 2026

ubuntu.com reports: USN-8574-3: Linux kernel vulnerabilities

Jul 28, 2026

ubuntu.com reports: USN-8595-3: Linux kernel (AWS) vulnerabilities

Jul 28, 2026

ubuntu.com reports: USN-8619-1: Linux kernel (HWE) vulnerabilities

Jul 28, 2026

ubuntu.com reports: USN-8620-1: Linux kernel vulnerabilities

Jul 29, 2026

ubuntu.com reports: USN-8620-2: Linux kernel (Azure FIPS) vulnerabilities

Jul 31, 2026

ubuntu.com reports: USN-8620-3: Linux kernel (Intel IoTG) vulnerabilities

Jul 31, 2026

ubuntu.com reports: USN-8620-4: Linux kernel (Intel IoTG) vulnerabilities

Aug 20, 2026

ubuntu.com reports: USN-8663-1: Linux kernel (NVIDIA) vulnerabilities

Aug 20, 2026

ubuntu.com reports: USN-8664-1: Linux kernel (NVIDIA BaseOS) vulnerabilities