Vulnerability Details : CVE-2017-2647
The KEYS subsystem in the Linux kernel before 3.18 allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via vectors involving a NULL value for a certain match field, related to the keyring_search_iterator function in keyring.c.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2017-2647
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-2647
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-2647
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.2
|
HIGH | AV:L/AC:L/Au:N/C:C/I:C/A:C |
3.9
|
10.0
|
NIST | |
|
7.8
|
HIGH | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2017-2647
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-2647
-
https://bugzilla.redhat.com/show_bug.cgi?id=1428353
1428353 – (CVE-2017-2647) CVE-2017-2647 kernel: Null pointer dereference in search_keyringIssue Tracking;Patch
-
https://github.com/torvalds/linux/commit/c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81
KEYS: Remove key_type::match in favour of overriding default by match… · torvalds/linux@c06cfb0 · GitHubIssue Tracking;Patch;Third Party Advisory
-
https://access.redhat.com/errata/RHSA-2017:2444
RHSA-2017:2444 - Security Advisory - Red Hat Customer Portal
-
https://access.redhat.com/errata/RHSA-2017:1842
RHSA-2017:1842 - Security Advisory - Red Hat Customer Portal
-
https://access.redhat.com/errata/RHSA-2017:2077
RHSA-2017:2077 - Security Advisory - Red Hat Customer Portal
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https://usn.ubuntu.com/3849-1/
USN-3849-1: Linux kernel vulnerabilities | Ubuntu security notices
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https://access.redhat.com/errata/RHSA-2017:2437
RHSA-2017:2437 - Security Advisory - Red Hat Customer Portal
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http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81
kernel/git/torvalds/linux.git - Linux kernel source treeIssue Tracking;Patch;Third Party Advisory
-
http://www.securityfocus.com/bid/97258
Linux Kernel CVE-2017-2647 Null Pointer Deference Local Privilege Escalation VulnerabilityThird Party Advisory;VDB Entry
-
https://usn.ubuntu.com/3849-2/
USN-3849-2: Linux kernel (Trusty HWE) vulnerabilities | Ubuntu security notices
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