Ubuntu Security Notice 2039-1 - An information leak was discovered in the handling of ICMPv6 Router Advertisement (RA) messages in the Linux kernel's IPv6 network stack. A remote attacker could exploit this flaw to cause a denial of service (excessive retries and address-generation outage), and consequently obtain sensitive information. A flaw was discovered in the Xen subsystem of the Linux kernel when it provides read-only access to a disk that supports TRIM or SCSI UNMAP to a guest OS. A privileged user in the guest OS could exploit this flaw to destroy data on the disk, even though the guest OS should not be able to write to the disk. Various other issues were also addressed.
d666179f4eca9accee08ccabed80dc0946e2c6fc975772befbf68c62fbea426dUbuntu Security Notice 2038-1 - An information leak was discovered in the handling of ICMPv6 Router Advertisement (RA) messages in the Linux kernel's IPv6 network stack. A remote attacker could exploit this flaw to cause a denial of service (excessive retries and address-generation outage), and consequently obtain sensitive information. A flaw was discovered in the Xen subsystem of the Linux kernel when it provides read-only access to a disk that supports TRIM or SCSI UNMAP to a guest OS. A privileged user in the guest OS could exploit this flaw to destroy data on the disk, even though the guest OS should not be able to write to the disk. Various other issues were also addressed.
8672520ae920f177437eb9025de7403e71472862cc712f76f38682792e48acfcUbuntu Security Notice 1947-1 - A denial of service flaw was discovered in the Btrfs file system in the Linux kernel. A local user could cause a denial of service by creating a large number of files with names that have the same CRC32 hash value. A denial of service flaw was discovered in the Btrfs file system in the Linux kernel. A local user could cause a denial of service (prevent file creation) for a victim, by creating a file with a specific CRC32C hash value in a directory important to the victim. Various other issues were also addressed.
19b6c149ebe3b2088d52c98d0772c8e2b25e649872dce2eb412f23aeeb5cf8eeUbuntu Security Notice 1946-1 - A denial of service flaw was discovered in the Btrfs file system in the Linux kernel. A local user could cause a denial of service by creating a large number of files with names that have the same CRC32 hash value. A denial of service flaw was discovered in the Btrfs file system in the Linux kernel. A local user could cause a denial of service (prevent file creation) for a victim, by creating a file with a specific CRC32C hash value in a directory important to the victim. Various other issues were also addressed.
dd974f010bbff440313942f7c9ba339449ecb01b534d8f4e20722e8282e34496Ubuntu Security Notice 1945-1 - A denial of service flaw was discovered in the Btrfs file system in the Linux kernel. A local user could cause a denial of service by creating a large number of files with names that have the same CRC32 hash value. A denial of service flaw was discovered in the Btrfs file system in the Linux kernel. A local user could cause a denial of service (prevent file creation) for a victim, by creating a file with a specific CRC32C hash value in a directory important to the victim. Various other issues were also addressed.
ad55b1cde311e93b165a194fa06c48b83dae5ca0f254120b3f02686b4b5c4ad0Ubuntu Security Notice 1944-1 - A denial of service flaw was discovered in the Btrfs file system in the Linux kernel. A local user could cause a denial of service by creating a large number of files with names that have the same CRC32 hash value. A denial of service flaw was discovered in the Btrfs file system in the Linux kernel. A local user could cause a denial of service (prevent file creation) for a victim, by creating a file with a specific CRC32C hash value in a directory important to the victim. Various other issues were also addressed.
554901691a20482f825e28f1547beee044c4f79424f652805a6a705b37f9c767Ubuntu Security Notice 1943-1 - Vasily Kulikov discovered a flaw in the Linux Kernel's perf tool that allows for privilege escalation. A local user could exploit this flaw to run commands as root when using the perf tool. A flaw was discovered in the Xen subsystem of the Linux kernel when it provides read-only access to a disk that supports TRIM or SCSI UNMAP to a guest OS. A privileged user in the guest OS could exploit this flaw to destroy data on the disk, even though the guest OS should not be able to write to the disk. Various other issues were also addressed.
f8bf7e00d636ea267827b60fa9176f568afd88b241794cfe80bd74e8fa05b71bUbuntu Security Notice 1938-1 - Vasily Kulikov discovered a flaw in the Linux Kernel's perf tool that allows for privilege escalation. A local could exploit this flaw to run commands as root when using the perf tool. A flaw was discovered in the Xen subsystem of the Linux kernel when it provides a guest OS read-only access to disks that support TRIM or SCSI UNMAP. A privileged user in the guest OS could exploit this flaw to destroy data on the disk. Various other issues were also addressed.
afe36f13a2eaef4039f3038361af8af976969799076e1bf1d46016a9a0a92664
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