SB2019091170 - Null pointer dereference in Linux kernel
Published: September 11, 2019
Security Bulletin ID
SB2019091170
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Null pointer dereference (CVE-ID: CVE-2019-16232)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: 5.6 [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]
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.
Remediation
Install update from vendor's website.
References
- 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/