Unity Linux 20.1070e Security Update: kernel (UTSA-2026-006566)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-006566 advisory. A vulnerability was found in btrfsalloctreeb in fs/btrfs/extent-tree.c in the Linux kernel due to an improper lock operation in btrfs. In this flaw, a user with a...

SUSE CVE-2021-4149

A vulnerability was found in btrfsalloctreeb in fs/btrfs/extent-tree.c in the Linux kernel due to an improper lock operation in btrfs. In this flaw, a user with a local privilege may cause a denial of service DOS due to a deadlock problem...

Ubuntu 16.04 ESM / 18.04 LTS : Linux kernel vulnerabilities (USN-5466-1)

The remote Ubuntu 16.04 ESM / 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5466-1 advisory. It was discovered that the Linux kernel did not properly restrict access to the kernel debugger when booted in secure boot environments. A...

CVE-2021-4149

A vulnerability was found in btrfsalloctreeb in fs/btrfs/extent-tree.c in the Linux kernel due to an improper lock operation in btrfs. In this flaw, a user with a local privilege may cause a denial of service DOS due to a deadlock problem...

CVE-2021-4149

CVE-2021-4149: Local privilege escalation via Linux kernel btrfs deadlock. Affects btrfs_alloc_tree_b in fs/btrfs/extent-tree.c where an improper lock operation can deadlock, enabling a local user to cause a denial-of-service. Debian LTS advisory DLA-3065-1 lists CVE-2021-4149 and notes the patch...

CVE-2021-4149

A vulnerability was found in btrfsalloctreeb in fs/btrfs/extent-tree.c in the Linux kernel due to an improper lock operation in btrfs. In this flaw, a user with a local privilege may cause a denial of service DOS due to a deadlock problem...