NULL pointer dereference in Linux kernel - CVE-2019-15218
Published: September 9, 2019
Vulnerability identifier: #VU20930
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-15218
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in the "drivers/media/usb/siano/smsusb.c" file. A local attacker with physical access can insert a USB device that submits malicious input to the targeted system and cause a denial of service (DoS) condition.
Affected software
Linux kernel
RSA Authentication Manager
RSA Authentication Manager
How to mitigate CVE-2019-15218
Install update from vendor's website.
Linux kernel - update to 5.1.8
RSA Authentication Manager - update to 8.4 Patch 9
RSA Authentication Manager - update to 8.4 Patch 9
External References
- http://www.openwall.com/lists/oss-security/2019/08/20/2
- http://www.openwall.com/lists/oss-security/2019/08/22/2
- http://www.openwall.com/lists/oss-security/2019/08/22/3
- http://www.openwall.com/lists/oss-security/2019/08/22/4
- http://www.openwall.com/lists/oss-security/2019/08/22/5
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.8
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=31e0456de5be379b10fea0fa94a681057114a96e
- https://syzkaller.appspot.com/bug?id=4a5d7c8c2b6dbedb5b7218c6d7e8666bd2387517