Null pointer dereference in Linux kernel - CVE-2019-16232
Published: September 11, 2019 / Updated: May 4, 2020
Vulnerability identifier: #VU92782
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-16232
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local privileged user to perform a denial of service (DoS) attack.
drivers/net/wireless/marvell/libertas/if_sdio.c in the Linux kernel 5.2.14 does not check the alloc_workqueue return value, leading to a NULL pointer dereference.
How to mitigate CVE-2019-16232
Install update from vendor's repository.
Sources
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00064.html
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00010.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LYIFGYEDQXP5DVJQQUARQRK2PXKBKQGY/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YWWOOJKZ4NQYN4RMFIVJ3ZIXKJJI3MKP/
- https://lkml.org/lkml/2019/9/9/487
- https://security.netapp.com/advisory/ntap-20191004-0001/
- https://usn.ubuntu.com/4284-1/
- https://usn.ubuntu.com/4285-1/
- https://usn.ubuntu.com/4287-1/
- https://usn.ubuntu.com/4287-2/