High severity · published Feb 8, 2016
CVE-2015-8539
The KEYS subsystem in the Linux kernel before 4.4 allows local users to gain privileges or cause a denial of service (BUG) via crafted keyctl commands that negatively instantiate…
7.8
CVSS
0.4%
EPSS
No
On KEV
Description
The KEYS subsystem in the Linux kernel before 4.4 allows local users to gain privileges or cause a denial of service (BUG) via crafted keyctl commands that negatively instantiate a key, related to security/keys/encrypted-keys/encrypted.c, security/keys/trusted.c, and security/keys/user_defined.c.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 36% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
before 4.4; 4.4; 4.4 · source: NVD
LE
Linux Enterprise Real Time Extension · Suse
12 · source: NVD
UL
Ubuntu Linux · Canonical
12.04; 14.04 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2015-8539
CVE.org
https://www.cve.org/CVERecord?id=CVE-2015-8539
Vendor Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=096fe9eaea40a17e125569f9e657e34cdb6d73bd
Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00007.html
Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00008.html
Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00009.html
Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00011.html
Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00017.html
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