Vulnerability in Linux Kernel
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.
EPSS: 0.011 (62.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.
Affected products
- Linux Linux_kernel — versions 5.0, 5.3
- Canonical Ubuntu_linux — versions 18.04, 19.04
- Ubuntu Shiftfs In The Linux Kernel — versions 5.3.0-11.12, 5.0 kernel
Weakness classification (CWE)
References
- security@ubuntu.com (x_refsource_MISC, Vendor Advisory)
- security@ubuntu.com (x_refsource_MISC, Vendor Advisory)
- security@ubuntu.com (Patch, Mailing List, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2019-15792?
- CVE-2019-15792 is a high-severity vulnerability in Linux Kernel, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 7.1/10. Published 2020-04-24.
- How severe is CVE-2019-15792?
- High severity. CVSS v3 base score is 7.1 out of 10.