What’s Vulnerable › Vulnerabilities

CVE-2018-20854

• Severity: high (CVSS 7.8 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: 2019-07-26 · updated 2026-06-17
• Weakness: CWE-125

Description

An issue was discovered in the Linux kernel before 4.20. drivers/phy/mscc/phy-ocelot-serdes.c has an off-by-one error with a resultant ctrl->phys out-of-bounds read.

Affected products

• Linux kernel: before 4.20 — fixed in 4.20

How to fix

Upgrade to a fixed version: Linux kernel 4.20. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6acb47d1a318e5b3b7115354ebc4ea060c59d3a1
• https://github.com/torvalds/linux/commit/6acb47d1a318e5b3b7115354ebc4ea060c59d3a1
• https://security.netapp.com/advisory/ntap-20190905-0002/
• https://support.f5.com/csp/article/K32450233
• https://support.f5.com/csp/article/K32450233?utm_source=f5support&amp%3Butm_medium=RSS
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6acb47d1a318e5b3b7115354ebc4ea060c59d3a1
• https://github.com/torvalds/linux/commit/6acb47d1a318e5b3b7115354ebc4ea060c59d3a1
• https://security.netapp.com/advisory/ntap-20190905-0002/
• https://support.f5.com/csp/article/K32450233
• https://support.f5.com/csp/article/K32450233?utm_source=f5support&amp%3Butm_medium=RSS

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