SB20241022299 - Incorrect calculation in Linux kernel smb server

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Main Vulnerability Database SB20241022299

SB20241022299 - Incorrect calculation in Linux kernel smb server

Published: October 22, 2024 Updated: May 12, 2025

Security Bulletin ID SB20241022299
Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Incorrect calculation (CVE-ID: CVE-2024-49988)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to incorrect calculation within the session_fd_check() and ksmbd_reopen_durable_fd() functions in fs/smb/server/vfs_cache.c, within the alloc_opinfo(), free_opinfo(), opinfo_get_list(), smb_send_parent_lease_break_noti(), smb_lazy_parent_lease_break_close(), smb_grant_oplock(), smb_break_all_write_oplock() and smb_break_all_levII_oplock() functions in fs/smb/server/oplock.c, within the ksmbd_conn_free() and ksmbd_conn_alloc() functions in fs/smb/server/connection.c. A local user can perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References