CVE-2026-53303

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.

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/4b3a1bf4c2ffd4c9595d900ead78c9035894a025	Patch
https://git.kernel.org/stable/c/5909bedbed38c558bee7cb6758ceedf9bc3a9194	Patch
https://git.kernel.org/stable/c/cea15f66b7b68b2c50943a6660e0692c6635e4eb	Patch
https://git.kernel.org/stable/c/d0e877810baf613b018fd9747440b9d4d9db1428	Patch
https://git.kernel.org/stable/c/d3ff0c121bbaef026df6248ab7ef6f0b068b0647	Patch
https://git.kernel.org/stable/c/ea3ab43a1f3cf2c7cecd75c8be1ee99a5e94a92e	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2026-06-26 20:17

Updated : 2026-07-06 20:24

NVD link : CVE-2026-53303

Mitre link : CVE-2026-53303

CVE.ORG link : CVE-2026-53303

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-125

Out-of-bounds Read

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