CVE-2024-42154: tcp_metrics: validate source addr length

Security readout for executives and security teams

CVE-2024-42154 is a Linux kernel bug in TCP metrics handling. The kernel did not verify that an IPv4 source-address attribute was long enough before using it. The public record does not provide CVSS, impact details, or evidence of active exploitation, so urgency should be driven by kernel exposure and vendor patch availability. Exposure is likely on systems running affected Linux kernel builds, including hosts and appliances that include the vulnerable TCP metrics code. Containers inherit the host kernel risk. The bundle includes a NetApp advisory and Debian LTS notice, but product-specific exposure must be confirmed against each vendor’s advisory. Treat this as a kernel maintenance priority, not an emergency based on current evidence. Patch through normal security update cycles, escalating for shared, exposed, or appliance-heavy environments where kernel flaws have broader blast radius. Mitigation focus: Update affected Linux kernels using distribution or vendor-provided security packages.; For custom kernels, apply the relevant upstream stable commit for your kernel branch.; Check NetApp and appliance vendor advisories for product-specific fixed versions..

Prepared

May 19, 2026, 21:39 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.