CVE-2019-11477

CVE-2019-11477 (SACK Panic) is a Linux kernel TCP vulnerability where crafted SACK blocks can trigger an integer overflow, potentially causing a kernel crash and DoS. CVE-2019-11478/11479 describe related DoS via SACK handling and low MSS. In practice, Arista discloses affected products (EOS, Clo...

CVE-2019-11478

CVE-2019-11478 describes a DoS in the Linux kernel TCP SACK handling where the TCP retransmission queue can fragment, leading to degraded performance or denial of service when processing crafted SACK sequences. The initial entry notes a fixed commit f070ef2ac66716357066b683fb0baf55f8191a2e and st...

CVE-2020-15707

CVE-2020-15707 is a GRUB2 bootloader vulnerability (initrd size handling) causing a heap-based buffer overflow via integer overflow in initrd processing. The flaw affects GRUB2 2.04 and earlier as deployed in multiple distros (Debian, Red Hat, Ubuntu) and can enable arbitrary code execution durin...

CVE-2020-15706

CVE-2020-15706 affects GRUB2 (2.04 and earlier) and is a race-condition/use-after-free in grub_script_function_create() triggered by redefining a function during execution, leading to arbitrary code execution and Secure Boot restriction bypass. Remediation is to upgrade to patched GRUB2 packages ...

CVE-2020-15705

GRUB2 ≤ 2.04 fails to validate kernel signatures when booting directly without shim, allowing Secure Boot bypass if the kernel signing certificate is in the Secure Boot DB. The issue affects GRUB2 2.04 and earlier; upgrades to patched grub2/shim combinations are advised (e.g., 2.06+ and related s...