What’s Vulnerable › Vulnerabilities

CVE-2019-19076

• Severity: medium (CVSS 5.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-11-18 · updated 2026-06-17
• Weakness: CWE-401

Description

A memory leak in the nfp_abm_u32_knode_replace() function in drivers/net/ethernet/netronome/nfp/abm/cls.c in the Linux kernel before 5.3.6 allows attackers to cause a denial of service (memory consumption), aka CID-78beef629fd9. NOTE: This has been argued as not a valid vulnerability. The upstream commit 78beef629fd9 was reverted

Affected products

• Canonical Ubuntu Linux: 18.04, 19.04
• Linux kernel: before 5.3.6 — fixed in 5.3.6
• Red Hat Enterprise Linux: 8.0

How to fix

Upgrade to a fixed version: Linux kernel 5.3.6. Check the vendor advisory for mitigations.

References

• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.6
• https://git.kernel.org/linus/1d1997db870f4058676439ef7014390ba9e24eb2
• https://github.com/torvalds/linux/commit/78beef629fd95be4ed853b2d37b832f766bd96ca
• https://lore.kernel.org/lkml/20191204103955.63c4d9af%40cakuba.netronome.com/
• https://security.netapp.com/advisory/ntap-20191205-0001/
• https://usn.ubuntu.com/4209-1/
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.6
• https://git.kernel.org/linus/1d1997db870f4058676439ef7014390ba9e24eb2
• https://github.com/torvalds/linux/commit/78beef629fd95be4ed853b2d37b832f766bd96ca
• https://lore.kernel.org/lkml/20191204103955.63c4d9af%40cakuba.netronome.com/
• https://security.netapp.com/advisory/ntap-20191205-0001/
• https://usn.ubuntu.com/4209-1/

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