Vulnerability Details : CVE-2018-8043
The unimac_mdio_probe function in drivers/net/phy/mdio-bcm-unimac.c in the Linux kernel through 4.15.8 does not validate certain resource availability, which allows local users to cause a denial of service (NULL pointer dereference).
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2018-8043
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-8043
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-2018-8043
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
2.1
|
LOW | AV:L/AC:L/Au:N/C:N/I:N/A:P |
3.9
|
2.9
|
NIST | |
|
5.5
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2018-8043
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-8043
-
http://www.securitytracker.com/id/1040749
Linux Kernel Null Pointer Dereference in unimac_mdio_probe() Lets Local Users Cause Denial of Service Conditions on the Target System - SecurityTrackerThird Party Advisory;VDB Entry
-
https://usn.ubuntu.com/3630-1/
USN-3630-1: Linux kernel vulnerability | Ubuntu security noticesThird Party Advisory
-
https://usn.ubuntu.com/3632-1/
USN-3632-1: Linux kernel (Azure) vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://usn.ubuntu.com/3630-2/
USN-3630-2: Linux kernel (HWE) vulnerability | Ubuntu security noticesThird Party Advisory
-
https://github.com/torvalds/linux/commit/297a6961ffb8ff4dc66c9fbf53b924bd1dda05d5
net: phy: mdio-bcm-unimac: fix potential NULL dereference in unimac_m… · torvalds/linux@297a696 · GitHubPatch;Third Party Advisory
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https://usn.ubuntu.com/3619-1/
USN-3619-1: Linux kernel vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://usn.ubuntu.com/3619-2/
USN-3619-2: Linux kernel (Xenial HWE) vulnerabilities | Ubuntu security noticesThird Party Advisory
-
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=297a6961ffb8ff4dc66c9fbf53b924bd1dda05d5
kernel/git/torvalds/linux.git - Linux kernel source treePatch;Vendor Advisory
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