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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2024-41012 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: filelock: Remove locks reliably when fcntl/close race is detected When fcntl_setlk() races with close(), it removes the created lock with do_lock_file_wait(). However, LSMs can allow the first do_lock_file_wait() that created the lock while denying the second do_lock_file_wait() that tries to remove the lock. Separately, posix_lock_file() could also fail to remove a lock due to GFP_KERNEL allocation failure (when splitting a range in the middle). After the bug has been triggered, use-after-free reads will occur in lock_get_status() when userspace reads /proc/locks. This can likely be used to read arbitrary kernel memory, but can't corrupt kernel memory. Fix it by calling locks_remove_posix() instead, which is designed to reliably get rid of POSIX locks associated with the given file and files_struct and is also used by filp_flush().


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/3cad1bc010416c6dd780643476bc59ed742436b9 CVE, kernel.org Patch 
https://git.kernel.org/stable/c/52c87ab18c76c14d7209646ccb3283b3f5d87b22 CVE, kernel.org Patch 
https://git.kernel.org/stable/c/5661b9c7ec189406c2dde00837aaa4672efb6240 CVE, kernel.org Patch 
https://git.kernel.org/stable/c/5f5d0799eb0a01d550c21b7894e26b2d9db55763 CVE, kernel.org Patch 
https://git.kernel.org/stable/c/b6d223942c34057fdfd8f149e763fa823731b224 CVE, kernel.org Patch 
https://git.kernel.org/stable/c/d30ff33040834c3b9eee29740acd92f9c7ba2250 CVE, kernel.org Patch 
https://git.kernel.org/stable/c/dc2ce1dfceaa0767211a9d963ddb029ab21c4235 CVE, kernel.org Patch 
https://git.kernel.org/stable/c/ef8fc41cd6f95f9a4a3470f085aecf350569a0b3 CVE, kernel.org Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-416 Use After Free cwe source acceptance level NIST  

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Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2024-41012
NVD Published Date:
07/23/2024
NVD Last Modified:
11/21/2024
Source:
kernel.org