Organizations Warned of 3 Exploited Linux Kernel Vulnerabilities

CISA has added CVE-2025-39682, CVE-2025-39964, and CVE-2026-53266 to its Known Exploited Vulnerabilities catalog, confirming exploitation of three Linux kernel flaws. The issues can enable denial of service, memory disclosure or corruption, unpredictable cryptographic results, and unauthorized memory modification through affected TLS, AF_ALG socket, and bridge Netfilter ebtables SNAT code. Federal agencies have been directed to remediate all three vulnerabilities within three days.