platform/surface: acpi-notify: Check ACPI companion before use

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-93114
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-17 17:18:05 UTC
Updated2026-09-17 17:18:05 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: platform/surface: acpi-notify: Check ACPI companion before use Since every platform driver can be forced to match a device that doesn't match its list of device IDs because of device_match_driver_override(), platform drivers that rely on the existence of a device's ACPI companion object should verify its presence. san_probe() dereferences the result of ACPI_COMPANION() when installing the GSBUS address space handler, so force-binding the driver to a device without an ACPI companion leads to a NULL pointer dereference. The dereference was introduced when the probe function was switched from ACPI_HANDLE() to ACPI_COMPANION(). Check the ACPI companion against NULL and return -ENODEV when it is missing, like commit e4865a56d013 ("ACPI: driver: Check ACPI_COMPANION() against NULL during probe") does for the core ACPI platform drivers.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected a9e10e58730432e5de840eb3ddd55c75f29341b3 4faa43d4ef0b98beb6c2b77a279f4aa5d7fa2d13 git Not specified
CNA Linux Linux affected a9e10e58730432e5de840eb3ddd55c75f29341b3 3855be0100efb98c26228c610db70a673611f3bd git Not specified
CNA Linux Linux affected a9e10e58730432e5de840eb3ddd55c75f29341b3 f276b62f2ce1cbff7fa50a8ee5afd8fef5a60897 git Not specified
CNA Linux Linux affected a9e10e58730432e5de840eb3ddd55c75f29341b3 9b6479da662c2ec4e931ed9f7228df46aa8c3766 git Not specified
CNA Linux Linux affected a9e10e58730432e5de840eb3ddd55c75f29341b3 7fea5a310e3b2db24f7aafe64897e4e659ffbb7d git Not specified
CNA Linux Linux affected a9e10e58730432e5de840eb3ddd55c75f29341b3 428a82d987fcd8844e8868c85582eae75b4b5c51 git Not specified
CNA Linux Linux affected a9e10e58730432e5de840eb3ddd55c75f29341b3 2b3a5dabe89e330413af403246b648c1890f368f git Not specified
CNA Linux Linux affected 5.14 Not specified
CNA Linux Linux unaffected 5.14 semver Not specified
CNA Linux Linux unaffected 5.15.221 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.188 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.157 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.110 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.52 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.6 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/3855be0100efb98c26228c610db70a673611f3bd 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/2b3a5dabe89e330413af403246b648c1890f368f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/4faa43d4ef0b98beb6c2b77a279f4aa5d7fa2d13 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/428a82d987fcd8844e8868c85582eae75b4b5c51 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/9b6479da662c2ec4e931ed9f7228df46aa8c3766 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/7fea5a310e3b2db24f7aafe64897e4e659ffbb7d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f276b62f2ce1cbff7fa50a8ee5afd8fef5a60897 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report