PT-2018-2206 · Linux+4 · Linux Kernel+4
Lukas Braune
·
Published
2018-02-14
·
Updated
2020-08-24
·
CVE-2018-7566
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to the fixed version
Description
The issue is related to a use-after-free error in the ALSA /dev/snd/seq driver of the Linux kernel. It may allow an attacker to impact the confidentiality, integrity, and availability of protected information. A buffer overflow can occur via an SNDRV SEQ IOCTL SET CLIENT POOL ioctl write operation to /dev/snd/seq by a local user.
Recommendations
For Linux kernel versions prior to the fixed version, update to the latest version to resolve the issue.
As a temporary workaround, consider restricting access to the /dev/snd/seq device to minimize the risk of exploitation.
Exploit
Fix
Race Condition
Buffer Overflow
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Related Identifiers
Affected Products
Centos
Linux Kernel
Red Hat
Suse
Ubuntu