CVE-2023-53055

In the Linux kernel, the following vulnerability has been resolved: fscrypt: destroy keyring after security_sb_delete() fscrypt_destroy_keyring() must be called after all potentially-encrypted inodes were evicted; otherwise it cannot safely destroy the keyring. Since inodes that are in-use by the Landlock LSM don't get evicted until security_sb_delete(), this means that fscrypt_destroy_keyring() must be called *after* security_sb_delete(). This fixes a WARN_ON followed by a NULL dereference, only possible if Landlock was being used on encrypted files.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/497ab5d9c7852dfedab2c9de75e41b60e54b7c5d	Patch
https://git.kernel.org/stable/c/992a3f3e8a0c92151dfdf65fc85567c865fd558a	Patch
https://git.kernel.org/stable/c/ccb820dc7d2236b1af0d54ae038a27b5b6d5ae5a	Patch
https://git.kernel.org/stable/c/d77531fac6a1fd9f1db0195438ba5419d72b96c4	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:6.3:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.3:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.3:rc3::::::

History

No history.

Information

Published : 2025-05-02 16:15

Updated : 2025-11-12 17:49

NVD link : CVE-2023-53055

Mitre link : CVE-2023-53055

CVE.ORG link : CVE-2023-53055

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-476

NULL Pointer Dereference

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