In the Linux kernel, the following vulnerability has been resolved:

PCI/sysfs: Add CAP_SYS_ADMIN check to __resource_resize_store()

Currently, the __resource_resize_store() allows writing to the
resourceN_resize sysfs attribute to change a BAR's size without checking
for capabilities, currently relying only on the file access check.

Resizing a BAR modifies PCI device configuration and can disrupt active
drivers. After the upcoming conversion to static attributes, it will also
trigger resource file updates via sysfs_update_groups().

Add a CAP_SYS_ADMIN check to prevent unprivileged users from performing BAR
resize operations.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < b722a607f858b9cd036075ea0efad553fb98e982
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < cbf0628c0b7db86c5ce36451f088101546acbf1d
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < 25ec7f57deceec633f27bc93b615f951e2ade814
0 affected < 6.12.111
0 affected < 6.18.53
Linux Linux affected
Version Status Constraints
6.12.111 unaffected ≤ 6.12.*
6.18.53 unaffected ≤ 6.18.*
7.2 unaffected ≤ *

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References
Link Providers
https://git.kernel.org/stable/c/25ec7f57deceec633f27bc93b615f951e2ade814 cve-icon
https://git.kernel.org/stable/c/b722a607f858b9cd036075ea0efad553fb98e982 cve-icon
https://git.kernel.org/stable/c/cbf0628c0b7db86c5ce36451f088101546acbf1d cve-icon
History

Thu, 24 Sep 2026 16:30:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: PCI/sysfs: Add CAP_SYS_ADMIN check to __resource_resize_store() Currently, the __resource_resize_store() allows writing to the resourceN_resize sysfs attribute to change a BAR's size without checking for capabilities, currently relying only on the file access check. Resizing a BAR modifies PCI device configuration and can disrupt active drivers. After the upcoming conversion to static attributes, it will also trigger resource file updates via sysfs_update_groups(). Add a CAP_SYS_ADMIN check to prevent unprivileged users from performing BAR resize operations.
Title PCI/sysfs: Add CAP_SYS_ADMIN check to __resource_resize_store()
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-09-24T16:04:54.215Z

Reserved: 2026-09-24T16:01:01.151Z

Link: CVE-2026-97505

cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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Weaknesses

No weakness.