#VU99187 Incorrect calculation in Linux kernel - CVE-2024-49988
Published: October 22, 2024 / Updated: May 12, 2025
Vulnerability identifier: #VU99187
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2024-49988
CWE-ID: CWE-682
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
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.
External links
- https://git.kernel.org/stable/c/18f06bacc197d4ac9b518ad1c69999bc3d83e7aa
- https://git.kernel.org/stable/c/9fd3cde4628bcd3549ab95061f2bab74d2ed4f3b
- https://git.kernel.org/stable/c/e9dac92f4482a382e8c0fe1bc243da5fc3526b0c
- https://git.kernel.org/stable/c/ee426bfb9d09b29987369b897fe9b6485ac2be27
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.10.14
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.11.3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.55