7.1
High
CVE-2019-15792 In shiftfs, a non-upstream patch to the Linux kernel included in the Ubuntu 5.0 and 5.3 kernel series,…
Description
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Shiftfs in the Linux kernel 5.3 | 5.3.0-11.12 → latest | No fix stated |
| Shiftfs in the Linux kernel 5.0 | earliest → < 5.0.0-35.38 | 5.0.0-35.38 |