Red Hat Security Advisory 2020-2854-01 - The kernel-alt packages provide the Linux kernel version 4.x. Issues addressed include denial of service, memory leak, out of bounds write, privilege escalation, and use-after-free vulnerabilities.
88b10b591e7d9aa17f5a3f9a69794ba0c6e72031e7fea8f23b71c9502215f507Ubuntu Security Notice 4367-2 - USN-4367-1 fixed vulnerabilities in the 5.4 Linux kernel. Unfortunately, that update introduced a regression in overlayfs. This update corrects the problem. It was discovered that the btrfs implementation in the Linux kernel did not properly detect that a block was marked dirty in some situations. An attacker could use this to specially craft a file system image that, when unmounted, could cause a denial of service. Various other issues were also addressed.
5e42002b4d2ecabf6a6cfa168d989279420dab6dbea6fcbbc0c07e9f5d7946b9Ubuntu Security Notice 4369-2 - USN-4369-1 fixed vulnerabilities in the 5.3 Linux kernel. Unfortunately, that update introduced a regression in overlayfs. This update corrects the problem. It was discovered that the btrfs implementation in the Linux kernel did not properly detect that a block was marked dirty in some situations. An attacker could use this to specially craft a file system image that, when unmounted, could cause a denial of service. Various other issues were also addressed.
f8da9cd441c6d1901bb239518cb0e0af3d90d2be5c17ffa81da275fed60bf480Ubuntu Security Notice 4369-1 - It was discovered that the btrfs implementation in the Linux kernel did not properly detect that a block was marked dirty in some situations. An attacker could use this to specially craft a file system image that, when unmounted, could cause a denial of service. Tristan Madani discovered that the file locking implementation in the Linux kernel contained a race condition. A local attacker could possibly use this to cause a denial of service or expose sensitive information. Various other issues were also addressed.
69def9b45df53fc4cdb7a3a8ed24f560a00649c84605fd7f555c6571945e7f41Ubuntu Security Notice 4367-1 - It was discovered that the btrfs implementation in the Linux kernel did not properly detect that a block was marked dirty in some situations. An attacker could use this to specially craft a file system image that, when unmounted, could cause a denial of service. It was discovered that the linux kernel did not properly validate certain mount options to the tmpfs virtual memory file system. A local attacker with the ability to specify mount options could use this to cause a denial of service. Various other issues were also addressed.
321685a1adbdcccf734ad851c77e79c05483bf554e2914c4f09a4d1df26c8252Ubuntu Security Notice 4368-1 - Tristan Madani discovered that the file locking implementation in the Linux kernel contained a race condition. A local attacker could possibly use this to cause a denial of service or expose sensitive information. It was discovered that the Serial CAN interface driver in the Linux kernel did not properly initialize data. A local attacker could use this to expose sensitive information. Various other issues were also addressed.
e6d9dc36e87b107c541d9e200b7670120dd2a6f0e812c4b8530369abbb224c18Ubuntu Security Notice 4364-1 - It was discovered that the ADIS16400 IIO IMU Driver for the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker could use this to cause a denial of service. It was discovered that the vhost net driver in the Linux kernel contained a stack buffer overflow. A local attacker with the ability to perform ioctl calls on /dev/vhost-net could use this to cause a denial of service. Various other issues were also addressed.
40abb3bdec0492cc28e800a42deaff41cbd35c03d6fe95eb0708a885d2822236Ubuntu Security Notice 4363-1 - It was discovered that the Serial CAN interface driver in the Linux kernel did not properly initialize data. A local attacker could use this to expose sensitive information. It was discovered that the linux kernel did not properly validate certain mount options to the tmpfs virtual memory file system. A local attacker with the ability to specify mount options could use this to cause a denial of service. Various other issues were also addressed.
fc9d288e93a1b9486a209f1f2b9d7e23d7cc984cfe2772b67824c80a4ad02276Debian Linux Security Advisory 4667-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service, or information leak.
16323d64ec34cdde8160250d74f386fe52de579ba9ed063c3eb7063b6b8aa960
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