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CVE-2023-4389

Good to know:

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Date: August 16, 2023

A flaw was found in btrfs_get_root_ref in fs/btrfs/disk-io.c in the btrfs filesystem in the Linux Kernel due to a double decrement of the reference count. This issue may allow a local attacker with user privilege to crash the system or may lead to leaked internal kernel information.

Language: C

Severity Score

Related Resources (6)

https://nvd.nist.gov/vuln/detail/CVE-2023-4389
https://people.canonical.com/~ubuntu-security/cve/CVE-2023-4389
https://patchwork.kernel.org/project/linux-btrfs/patch/20220324134454.15192-1-baijiaju1990@gmail.com/
https://access.redhat.com/security/cve/CVE-2023-4389
https://bugzilla.redhat.com/show_bug.cgi?id=2219271
https://www.mend.io/vulnerability-database/CVE-2023-4389

Severity Score

Weakness Type (CWE)

Double Free

CWE-415

Top Fix

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Upgrade Version

Upgrade to version linux-libc-headers - 5.14

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): HIGH
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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