Filtered by vendor Redhat Subscriptions
Filtered by product Enterprise Linux Atomic Host Subscriptions
Total 5 CVE
CVE Vendors Products Updated CVSS v3.1
CVE-2020-15707 8 Canonical, Debian, Gnu and 5 more 19 Ubuntu Linux, Debian Linux, Grub2 and 16 more 2024-09-17 5.7 Medium
Integer overflows were discovered in the functions grub_cmd_initrd and grub_initrd_init in the efilinux component of GRUB2, as shipped in Debian, Red Hat, and Ubuntu (the functionality is not included in GRUB2 upstream), leading to a heap-based buffer overflow. These could be triggered by an extremely large number of arguments to the initrd command on 32-bit architectures, or a crafted filesystem with very large files on any architecture. An attacker could use this to execute arbitrary code and bypass UEFI Secure Boot restrictions. This issue affects GRUB2 version 2.04 and prior versions.
CVE-2019-11477 6 Canonical, F5, Ivanti and 3 more 29 Ubuntu Linux, Big-ip Access Policy Manager, Big-ip Advanced Firewall Manager and 26 more 2024-09-17 7.5 High
Jonathan Looney discovered that the TCP_SKB_CB(skb)->tcp_gso_segs value was subject to an integer overflow in the Linux kernel when handling TCP Selective Acknowledgments (SACKs). A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commit 3b4929f65b0d8249f19a50245cd88ed1a2f78cff.
CVE-2020-15705 7 Canonical, Debian, Gnu and 4 more 18 Ubuntu Linux, Debian Linux, Grub2 and 15 more 2024-09-17 6.4 Medium
GRUB2 fails to validate kernel signature when booted directly without shim, allowing secure boot to be bypassed. This only affects systems where the kernel signing certificate has been imported directly into the secure boot database and the GRUB image is booted directly without the use of shim. This issue affects GRUB2 version 2.04 and prior versions.
CVE-2019-11478 6 Canonical, F5, Ivanti and 3 more 29 Ubuntu Linux, Big-ip Access Policy Manager, Big-ip Advanced Firewall Manager and 26 more 2024-09-16 N/A
Jonathan Looney discovered that the TCP retransmission queue implementation in tcp_fragment in the Linux kernel could be fragmented when handling certain TCP Selective Acknowledgment (SACK) sequences. A remote attacker could use this to cause a denial of service. This has been fixed in stable kernel releases 4.4.182, 4.9.182, 4.14.127, 4.19.52, 5.1.11, and is fixed in commit f070ef2ac66716357066b683fb0baf55f8191a2e.
CVE-2020-15706 7 Canonical, Debian, Gnu and 4 more 18 Ubuntu Linux, Debian Linux, Grub2 and 15 more 2024-09-16 6.4 Medium
GRUB2 contains a race condition in grub_script_function_create() leading to a use-after-free vulnerability which can be triggered by redefining a function whilst the same function is already executing, leading to arbitrary code execution and secure boot restriction bypass. This issue affects GRUB2 version 2.04 and prior versions.