CVE-2026-80950

In the Linux kernel, the following vulnerability has been resolved: i3c: renesas: Check that the transfer is valid before accessing it The Renesas I3C driver uses an asynchronous model to transfer data. It prepares a struct renesas_i3c_xfer, enqueues it, and waits for completion. The interrupt handler dequeues the transfer, updates/uses it, and signals the waiting thread. If the completion times out, the waiting thread dequeues the transfer and free it. If an interrupt fires after that, the handler may access freed memory, leading to crashes. Check that the transfer is still valid before accessing it in the interrupt handler. With it clear any status flags and disable all the interrupts to avoid triggering the same interrupts again.

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/0093f9fc102ba8b98561fdd2f8559553ef56be59
https://git.kernel.org/stable/c/5f1a76ecfe90544a28d657306c9b3caa66ba0e63
https://git.kernel.org/stable/c/ec631aff93261c6d031f953549802322032f2aba

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-11 20:19

Updated : 2026-09-13 07:17

NVD link : CVE-2026-80950

Mitre link : CVE-2026-80950

CVE.ORG link : CVE-2026-80950

JSON object : View

Products Affected

No product.

CWE

No CWE.

{"id": "CVE-2026-80950", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "d028219a9f1485914492bf373406f6a0e665ace2", "lessThan": "0093f9fc102ba8b98561fdd2f8559553ef56be59", "versionType": "git"}, {"status": "affected", "version": "d028219a9f1485914492bf373406f6a0e665ace2", "lessThan": "ec631aff93261c6d031f953549802322032f2aba", "versionType": "git"}, {"status": "affected", "version": "d028219a9f1485914492bf373406f6a0e665ace2", "lessThan": "5f1a76ecfe90544a28d657306c9b3caa66ba0e63", "versionType": "git"}], "programFiles": ["drivers/i3c/master/renesas-i3c.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.17"}, {"status": "unaffected", "version": "0", "lessThan": "6.17", "versionType": "semver"}, {"status": "unaffected", "version": "6.18.50", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.2.4", "versionType": "semver", "lessThanOrEqual": "7.2.*"}, {"status": "unaffected", "version": "7.3-rc1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/i3c/master/renesas-i3c.c"], "defaultStatus": "affected"}]}], "published": "2026-09-11T20:19:00.683", "references": [{"url": "https://git.kernel.org/stable/c/0093f9fc102ba8b98561fdd2f8559553ef56be59", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/5f1a76ecfe90544a28d657306c9b3caa66ba0e63", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ec631aff93261c6d031f953549802322032f2aba", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Received", "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ni3c: renesas: Check that the transfer is valid before accessing it\n\nThe Renesas I3C driver uses an asynchronous model to transfer data. It\nprepares a struct renesas_i3c_xfer, enqueues it, and waits for completion.\nThe interrupt handler dequeues the transfer, updates/uses it, and signals\nthe waiting thread.\n\nIf the completion times out, the waiting thread dequeues the transfer and\nfree it. If an interrupt fires after that, the handler may access freed\nmemory, leading to crashes.\n\nCheck that the transfer is still valid before accessing it in the\ninterrupt handler. With it clear any status flags and disable all\nthe interrupts to avoid triggering the same interrupts again."}], "lastModified": "2026-09-13T07:17:02.210", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}