In the Linux kernel, the following vulnerability has been resolved: f2fs: protect extension_list reading with sb_lock in f2fs_sbi_show() In f2fs_sbi_show(), the extension_list, extension_count and hot_ext_count are read without holding sbi->sb_lock. If a concurrent sysfs store modifies the extension list via f2fs_update_extension_list(), the show path may read inconsistent count and array contents, potentially leading to out-of-bounds access or displaying stale data. Fix this by holding sb_lock around the entire extension list read and format operation.

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No CVSS v3.1

No CVSS v3.0

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Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

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References
Link Providers
https://git.kernel.org/stable/c/4b3a1bf4c2ffd4c9595d900ead78c9035894a025 cve-icon
https://git.kernel.org/stable/c/5909bedbed38c558bee7cb6758ceedf9bc3a9194 cve-icon
https://git.kernel.org/stable/c/cea15f66b7b68b2c50943a6660e0692c6635e4eb cve-icon
https://git.kernel.org/stable/c/d0e877810baf613b018fd9747440b9d4d9db1428 cve-icon
https://git.kernel.org/stable/c/d3ff0c121bbaef026df6248ab7ef6f0b068b0647 cve-icon
https://git.kernel.org/stable/c/ea3ab43a1f3cf2c7cecd75c8be1ee99a5e94a92e cve-icon
History

Fri, 26 Jun 2026 22:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-119
CWE-363

Fri, 26 Jun 2026 20:15:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: f2fs: protect extension_list reading with sb_lock in f2fs_sbi_show() In f2fs_sbi_show(), the extension_list, extension_count and hot_ext_count are read without holding sbi->sb_lock. If a concurrent sysfs store modifies the extension list via f2fs_update_extension_list(), the show path may read inconsistent count and array contents, potentially leading to out-of-bounds access or displaying stale data. Fix this by holding sb_lock around the entire extension list read and format operation.
Title f2fs: protect extension_list reading with sb_lock in f2fs_sbi_show()
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-06-26T19:40:59.383Z

Reserved: 2026-06-09T07:44:35.397Z

Link: CVE-2026-53303

cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

Updated: 2026-06-26T21:45:05Z