What’s Vulnerable › Vulnerabilities

CVE-2018-8043

• Severity: medium (CVSS 5.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-03-10 · updated 2026-06-17
• Weakness: CWE-476

Description

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).

Affected products

• Canonical Ubuntu Linux: 14.04, 16.04, 17.10
• Linux kernel: through 4.15.8

References

• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=297a6961ffb8ff4dc66c9fbf53b924bd1dda05d5
• http://www.securitytracker.com/id/1040749
• https://github.com/torvalds/linux/commit/297a6961ffb8ff4dc66c9fbf53b924bd1dda05d5
• https://usn.ubuntu.com/3619-1/
• https://usn.ubuntu.com/3619-2/
• https://usn.ubuntu.com/3630-1/
• https://usn.ubuntu.com/3630-2/
• https://usn.ubuntu.com/3632-1/
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=297a6961ffb8ff4dc66c9fbf53b924bd1dda05d5
• http://www.securitytracker.com/id/1040749
• https://github.com/torvalds/linux/commit/297a6961ffb8ff4dc66c9fbf53b924bd1dda05d5
• https://usn.ubuntu.com/3619-1/

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