Vulnerability Details CVE-2019-15792
In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series, shiftfs_btrfs_ioctl_fd_replace() calls fdget(oldfd), then without further checks passes the resulting file* into shiftfs_real_fdget(), which casts file->private_data, a void* that points to a filesystem-dependent type, to a "struct shiftfs_file_info *". As the private_data is not required to be a pointer, an attacker can use this to cause a denial of service or possibly execute arbitrary code.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 55.9%
CVSS Severity
CVSS v3 Score 7.1
CVSS v2 Score 4.6
Products affected by CVE-2019-15792
-
cpe:2.3:o:canonical:ubuntu_linux:18.04
-
cpe:2.3:o:canonical:ubuntu_linux:19.04
-
cpe:2.3:o:linux:linux_kernel:5.0
-
cpe:2.3:o:linux:linux_kernel:5.3