gpio: cdev: fix kernel stack leak to user-space in error path

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-98528
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-18 16:17:04 UTC
Updated2026-10-18 16:17:04 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: gpio: cdev: fix kernel stack leak to user-space in error path If we fail to acquire the GPIO chip guard in gpio_desc_to_lineinfo(), we return immediately before zeroing the info struct we'll end up passing to the user-space later in lineinfo_get_v1(). This may leak the kernel stack contents. Make gpio_desc_to_lineinfo() return int so that the -ENODEV returned on failure to acquire the guard can be propagated to the callers. While not strictly necessary: move the memset() before trying to acquire the SRCU read lock too for good measure.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected d83cee3d2bb131c7fca7e19f1e33dc7530fd7083 8460ee5216ab9a38263b01dca4b0a27e083f70f3 git Not specified
CNA Linux Linux affected d83cee3d2bb131c7fca7e19f1e33dc7530fd7083 cf3d043582e106a0e57002bec8a6de8929ba3e1c git Not specified
CNA Linux Linux affected d83cee3d2bb131c7fca7e19f1e33dc7530fd7083 60a466f231905cd96ae6f0f3c44a710c97873dac git Not specified
CNA Linux Linux affected d83cee3d2bb131c7fca7e19f1e33dc7530fd7083 1feb5d39b05afd902ed9fc902ec5b15be03a4bdb git Not specified
CNA Linux Linux affected 6.9 Not specified
CNA Linux Linux unaffected 6.9 semver Not specified
CNA Linux Linux unaffected 6.12.112 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.55 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.9 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/cf3d043582e106a0e57002bec8a6de8929ba3e1c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/60a466f231905cd96ae6f0f3c44a710c97873dac 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/8460ee5216ab9a38263b01dca4b0a27e083f70f3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/1feb5d39b05afd902ed9fc902ec5b15be03a4bdb 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