[ubuntu/groovy-security] linux 5.8.0-50.56 (Accepted)

[Andy Whitcroft]

linux (5.8.0-50.56) groovy; urgency=medium

  * overlayfs calls vfs_setxattr without cap_convert_nscap
    - vfs: move cap_convert_nscap() call into vfs_setxattr()

  * CVE-2021-3492
    - SAUCE: shiftfs: free allocated memory in shiftfs_btrfs_ioctl_fd_replace()
      error paths
    - SAUCE: shiftfs: handle copy_to_user() return values correctly

  * CVE-2021-29154
    - SAUCE: bpf, x86: Validate computation of branch displacements for x86-64
    - SAUCE: bpf, x86: Validate computation of branch displacements for x86-32

Date: 2021-04-12 17:00:10.576016+00:00
Changed-By: Stefan Bader <stefan.bader at canonical.com>
Signed-By: Andy Whitcroft <apw at canonical.com>
https://launchpad.net/ubuntu/+source/linux/5.8.0-50.56
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