#VU99101 Buffer overflow in Linux kernel - CVE-2024-49996

Cybersecurity Help s.r.o.

Published: 2024-10-22 | Updated: 2025-05-12

Vulnerability identifier: #VU99101

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-49996

CWE-ID: CWE-119

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to memory corruption within the parse_reparse_posix() and cifs_reparse_point_to_fattr() functions in fs/smb/client/reparse.c. A local user can escalate privileges on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 5.4, 5.4.0, 5.4.0 rc6, 5.4.1, 5.4.2, 5.4.3, 5.4.4, 5.4.5, 5.4.6, 5.4.7, 5.4.8, 5.4.9, 5.4.10, 5.4.11, 5.4.12, 5.4.13, 5.4.14, 5.4.15, 5.4.16, 5.4.17, 5.4.18, 5.4.19, 5.4.20, 5.4.21, 5.4.22, 5.4.23, 5.4.24, 5.4.25, 5.4.26, 5.4.27, 5.4.28, 5.4.29, 5.4.30, 5.4.31, 5.4.32, 5.4.33, 5.4.34, 5.4.35, 5.4.36, 5.4.37, 5.4.38, 5.4.39, 5.4.40, 5.4.41, 5.4.42, 5.4.43, 5.4.44, 5.4.45, 5.4.46, 5.4.47, 5.4.48, 5.4.49, 5.4.50, 5.4.51, 5.4.52, 5.4.53, 5.4.54, 5.4.55, 5.4.56, 5.4.57, 5.4.58, 5.4.59, 5.4.60, 5.4.61, 5.4.62, 5.4.63, 5.4.64, 5.4.65, 5.4.66, 5.4.67, 5.4.68, 5.4.69, 5.4.70, 5.4.71, 5.4.72, 5.4.73, 5.4.74, 5.4.75, 5.4.76, 5.4.77, 5.4.78, 5.4.79, 5.4.80, 5.4.81, 5.4.82, 5.4.83, 5.4.84, 5.4.85, 5.4.86, 5.4.87, 5.4.88, 5.4.89, 5.4.90, 5.4.91, 5.4.92, 5.4.93, 5.4.94, 5.4.95, 5.4.96, 5.4.97, 5.4.98, 5.4.99, 5.4.100, 5.4.101, 5.4.102, 5.4.103, 5.4.104, 5.4.105, 5.4.106, 5.4.107, 5.4.108, 5.4.109, 5.4.110, 5.4.111, 5.4.112, 5.4.113, 5.4.114, 5.4.115, 5.4.116, 5.4.117, 5.4.118, 5.4.119, 5.4.120, 5.4.121, 5.4.122, 5.4.123, 5.4.124, 5.4.125, 5.4.126, 5.4.127, 5.4.128, 5.4.129, 5.4.130, 5.4.131, 5.4.132, 5.4.133, 5.4.134, 5.4.135, 5.4.136, 5.4.137, 5.4.138, 5.4.139, 5.4.140, 5.4.141, 5.4.142, 5.4.143, 5.4.144, 5.4.145, 5.4.146, 5.4.147, 5.4.148, 5.4.149, 5.4.150, 5.4.151, 5.4.152, 5.4.153, 5.4.154, 5.4.155, 5.4.156, 5.4.157, 5.4.158, 5.4.159, 5.4.160, 5.4.161, 5.4.162, 5.4.163, 5.4.164, 5.4.165, 5.4.166, 5.4.167, 5.4.168, 5.4.169, 5.4.170, 5.4.171, 5.4.172, 5.4.173, 5.4.174, 5.4.175, 5.4.176, 5.4.177, 5.4.178, 5.4.179, 5.4.180, 5.4.181, 5.4.182, 5.4.183, 5.4.184, 5.4.185, 5.4.186, 5.4.187, 5.4.188, 5.4.189, 5.4.190, 5.4.191, 5.4.192, 5.4.193, 5.4.194, 5.4.195, 5.4.196, 5.4.197, 5.4.198, 5.4.199, 5.4.200, 5.4.201, 5.4.202, 5.4.203, 5.4.204, 5.4.205, 5.4.206, 5.4.207, 5.4.208, 5.4.209, 5.4.210, 5.4.211, 5.4.212, 5.4.213, 5.4.214, 5.4.215, 5.4.216, 5.4.217, 5.4.218, 5.4.219, 5.4.220, 5.4.221, 5.4.222, 5.4.223, 5.4.224, 5.4.225, 5.4.226, 5.4.227, 5.4.228, 5.4.229, 5.4.230, 5.4.231, 5.4.232, 5.4.233, 5.4.234, 5.4.235, 5.4.236, 5.4.237, 5.4.238, 5.4.239, 5.4.240, 5.4.241, 5.4.242, 5.4.243, 5.4.244, 5.4.245, 5.4.246, 5.4.247, 5.4.248, 5.4.249, 5.4.250, 5.4.251, 5.4.252, 5.4.253, 5.4.254, 5.4.255, 5.4.256, 5.4.257, 5.4.258, 5.4.259, 5.4.260, 5.4.261, 5.4.262, 5.4.263, 5.4.264, 5.4.265, 5.4.266, 5.4.267, 5.4.268, 5.4.269, 5.4.270, 5.4.271, 5.4.272, 5.4.273, 5.4.274, 5.4.275, 5.4.276, 5.4.277, 5.4.278, 5.4.279, 5.4.280, 5.4.281, 5.4.282, 5.4.283, 5.4.284, 5.4.285, 5.4.286, 5.10, 5.10 rc1, 5.10 rc2, 5.10 rc3, 5.10 rc4, 5.10 rc5, 5.10 rc7, 5.10.1, 5.10.2, 5.10.3, 5.10.4, 5.10.5, 5.10.6, 5.10.7, 5.10.8, 5.10.9, 5.10.10, 5.10.11, 5.10.12, 5.10.13, 5.10.14, 5.10.15, 5.10.16, 5.10.17, 5.10.18, 5.10.19, 5.10.20, 5.10.21, 5.10.22, 5.10.23, 5.10.24, 5.10.25, 5.10.26, 5.10.27, 5.10.28, 5.10.29, 5.10.30, 5.10.31, 5.10.32, 5.10.33, 5.10.34, 5.10.35, 5.10.36, 5.10.37, 5.10.38, 5.10.39, 5.10.40, 5.10.41, 5.10.42, 5.10.43, 5.10.44, 5.10.45, 5.10.46, 5.10.47, 5.10.48, 5.10.49, 5.10.50, 5.10.51, 5.10.52, 5.10.53, 5.10.54, 5.10.55, 5.10.56, 5.10.57, 5.10.58, 5.10.59, 5.10.60, 5.10.61, 5.10.62, 5.10.63, 5.10.64, 5.10.65, 5.10.66, 5.10.67, 5.10.68, 5.10.69, 5.10.70, 5.10.71, 5.10.72, 5.10.73, 5.10.74, 5.10.75, 5.10.76, 5.10.77, 5.10.78, 5.10.79, 5.10.80, 5.10.81, 5.10.82, 5.10.83, 5.10.84, 5.10.85, 5.10.86, 5.10.87, 5.10.88, 5.10.89, 5.10.90, 5.10.91, 5.10.92, 5.10.93, 5.10.94, 5.10.95, 5.10.96, 5.10.97, 5.10.98, 5.10.99, 5.10.100, 5.10.101, 5.10.102, 5.10.103, 5.10.104, 5.10.105, 5.10.106, 5.10.107, 5.10.108, 5.10.109, 5.10.110, 5.10.111, 5.10.112, 5.10.113, 5.10.114, 5.10.115, 5.10.116, 5.10.117, 5.10.118, 5.10.119, 5.10.120, 5.10.121, 5.10.122, 5.10.123, 5.10.124, 5.10.125, 5.10.126, 5.10.127, 5.10.128, 5.10.129, 5.10.130, 5.10.131, 5.10.132, 5.10.133, 5.10.134, 5.10.135, 5.10.136, 5.10.137, 5.10.138, 5.10.139, 5.10.140, 5.10.141, 5.10.142, 5.10.143, 5.10.144, 5.10.145, 5.10.146, 5.10.147, 5.10.148, 5.10.149, 5.10.150, 5.10.151, 5.10.152, 5.10.153, 5.10.154, 5.10.155, 5.10.156, 5.10.157, 5.10.158, 5.10.159, 5.10.160, 5.10.161, 5.10.162, 5.10.163, 5.10.164, 5.10.165, 5.10.166, 5.10.167, 5.10.168, 5.10.169, 5.10.170, 5.10.171, 5.10.172, 5.10.173, 5.10.174, 5.10.175, 5.10.176, 5.10.177, 5.10.178, 5.10.179, 5.10.180, 5.10.181, 5.10.182, 5.10.183, 5.10.184, 5.10.185, 5.10.186, 5.10.187, 5.10.188, 5.10.189, 5.10.190, 5.10.191, 5.10.192, 5.10.193, 5.10.194, 5.10.195, 5.10.196, 5.10.197, 5.10.198, 5.10.199, 5.10.200, 5.10.201, 5.10.202, 5.10.203, 5.10.204, 5.10.205, 5.10.206, 5.10.207, 5.10.208, 5.10.209, 5.10.210, 5.10.211, 5.10.212, 5.10.213, 5.10.214, 5.10.215, 5.10.216, 5.10.217, 5.10.218, 5.10.219, 5.10.220, 5.10.221, 5.10.222, 5.10.223, 5.10.224, 5.10.225, 5.10.226, 5.10.227, 5.10.228, 5.10.229, 5.10.230, 5.15, 5.15 rc1, 5.15 rc2, 5.15 rc3, 5.15 rc4, 5.15 rc5, 5.15 rc6, 5.15 rc7, 5.15.0, 5.15.1, 5.15.2, 5.15.3, 5.15.4, 5.15.5, 5.15.6, 5.15.7, 5.15.8, 5.15.9, 5.15.10, 5.15.11, 5.15.12, 5.15.13, 5.15.14, 5.15.15, 5.15.16, 5.15.17, 5.15.18, 5.15.19, 5.15.20, 5.15.21, 5.15.22, 5.15.23, 5.15.24, 5.15.25, 5.15.26, 5.15.27, 5.15.28, 5.15.29, 5.15.30, 5.15.31, 5.15.32, 5.15.33, 5.15.34, 5.15.35, 5.15.36, 5.15.37, 5.15.38, 5.15.39, 5.15.40, 5.15.41, 5.15.42, 5.15.43, 5.15.44, 5.15.45, 5.15.46, 5.15.47, 5.15.48, 5.15.49, 5.15.50, 5.15.51, 5.15.52, 5.15.53, 5.15.54, 5.15.55, 5.15.56, 5.15.57, 5.15.58, 5.15.59, 5.15.60, 5.15.61, 5.15.62, 5.15.63, 5.15.64, 5.15.65, 5.15.66, 5.15.67, 5.15.68, 5.15.69, 5.15.70, 5.15.71, 5.15.72, 5.15.73, 5.15.74, 5.15.75, 5.15.76, 5.15.77, 5.15.78, 5.15.79, 5.15.80, 5.15.81, 5.15.82, 5.15.83, 5.15.84, 5.15.85, 5.15.86, 5.15.87, 5.15.88, 5.15.89, 5.15.90, 5.15.91, 5.15.92, 5.15.93, 5.15.94, 5.15.95, 5.15.96, 5.15.97, 5.15.98, 5.15.99, 5.15.100, 5.15.101, 5.15.102, 5.15.103, 5.15.104, 5.15.105, 5.15.106, 5.15.107, 5.15.108, 5.15.109, 5.15.110, 5.15.111, 5.15.112, 5.15.113, 5.15.114, 5.15.115, 5.15.116, 5.15.117, 5.15.118, 5.15.119, 5.15.120, 5.15.121, 5.15.122, 5.15.123, 5.15.124, 5.15.125, 5.15.126, 5.15.127, 5.15.128, 5.15.129, 5.15.130, 5.15.131, 5.15.132, 5.15.133, 5.15.134, 5.15.135, 5.15.136, 5.15.137, 5.15.138, 5.15.139, 5.15.140, 5.15.141, 5.15.142, 5.15.143, 5.15.144, 5.15.145, 5.15.146, 5.15.147, 5.15.148, 5.15.149, 5.15.150, 5.15.151, 5.15.152, 5.15.153, 5.15.154, 5.15.155, 5.15.156, 5.15.157, 5.15.158, 5.15.159, 5.15.160, 5.15.161, 5.15.162, 5.15.163, 5.15.164, 5.15.165, 5.15.166, 5.15.167, 5.15.168, 5.15.169, 5.15.170, 5.15.171, 5.15.172, 5.15.173, 6.1, 6.1 rc1, 6.1 rc3, 6.1 rc7, 6.1.1, 6.1.2, 6.1.3, 6.1.4, 6.1.5, 6.1.6, 6.1.7, 6.1.8, 6.1.9, 6.1.10, 6.1.11, 6.1.12, 6.1.13, 6.1.14, 6.1.15, 6.1.16, 6.1.17, 6.1.18, 6.1.19, 6.1.20, 6.1.21, 6.1.22, 6.1.23, 6.1.24, 6.1.25, 6.1.26, 6.1.27, 6.1.28, 6.1.29, 6.1.30, 6.1.31, 6.1.32, 6.1.33, 6.1.34, 6.1.35, 6.1.36, 6.1.37, 6.1.38, 6.1.39, 6.1.40, 6.1.41, 6.1.42, 6.1.43, 6.1.44, 6.1.45, 6.1.46, 6.1.47, 6.1.48, 6.1.49, 6.1.50, 6.1.51, 6.1.52, 6.1.53, 6.1.54, 6.1.55, 6.1.56, 6.1.57, 6.1.58, 6.1.59, 6.1.60, 6.1.61, 6.1.62, 6.1.63, 6.1.64, 6.1.65, 6.1.66, 6.1.67, 6.1.68, 6.1.69, 6.1.70, 6.1.71, 6.1.72, 6.1.73, 6.1.74, 6.1.75, 6.1.76, 6.1.77, 6.1.78, 6.1.79, 6.1.80, 6.1.81, 6.1.82, 6.1.83, 6.1.84, 6.1.85, 6.1.86, 6.1.87, 6.1.88, 6.1.89, 6.1.90, 6.1.91, 6.1.92, 6.1.93, 6.1.94, 6.1.95, 6.1.96, 6.1.97, 6.1.98, 6.1.99, 6.1.100, 6.1.101, 6.1.102, 6.1.103, 6.1.104, 6.1.105, 6.1.106, 6.1.107, 6.1.108, 6.1.109, 6.1.110, 6.1.111, 6.1.112, 6.1.113, 6.1.114, 6.1.115, 6.1.116, 6.1.117, 6.1.118, 6.1.119, 6.6, 6.6 rc1, 6.6 rc2, 6.6 rc3, 6.6 rc4, 6.6 rc5, 6.6 rc6, 6.6.1, 6.6.2, 6.6.3, 6.6.4, 6.6.5, 6.6.6, 6.6.7, 6.6.8, 6.6.9, 6.6.10, 6.6.11, 6.6.12, 6.6.13, 6.6.14, 6.6.15, 6.6.16, 6.6.17, 6.6.18, 6.6.19, 6.6.20, 6.6.21, 6.6.22, 6.6.23, 6.6.24, 6.6.25, 6.6.26, 6.6.27, 6.6.28, 6.6.29, 6.6.30, 6.6.31, 6.6.32, 6.6.33, 6.6.34, 6.6.35, 6.6.36, 6.6.37, 6.6.38, 6.6.39, 6.6.40, 6.6.41, 6.6.42, 6.6.43, 6.6.44, 6.6.45, 6.6.46, 6.6.47, 6.6.48, 6.6.49, 6.6.50, 6.6.51, 6.6.52, 6.6.53, 6.6.54, 6.10, 6.10.1, 6.10.2, 6.10.3, 6.10.4, 6.10.5, 6.10.6, 6.10.7, 6.10.8, 6.10.9, 6.10.10, 6.10.11, 6.10.12, 6.10.13, 6.11, 6.11.1, 6.11.2

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

Latest bulletins with this vulnerability

Ubuntu update for linux-raspi-5.4

Ubuntu update for linux-raspi

Multiple vulnerabilities in Dell Secure Connect Gateway

Ubuntu update for linux-gcp-5.15

Ubuntu update for linux-azure-nvidia

Dell APEX Cloud Platform for Red Hat OpenShift update for third-party components

Ubuntu update for linux-ibm-5.15

Ubuntu update for linux-ibm-5.4

Ubuntu update for linux-intel-iotg-5.15

Ubuntu update for linux-azure-6.8