CVE-2019-15792
mediumpriority · track · 41EPSS 0.011 · 66 %ileexploit · functionalEURUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.6–7.8
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (1)
Public proof-of-concept and weaponised exploit code.
- EDB-47693Ubuntu 19.10 - Refcount Underflow and Type Confusion in shiftfsfunctional · exploit_db
affected products (15)
Products and version ranges known to be affected.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (19)
External citations — patches, advisories, analysis.
- https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=5df147c8140efc71ac0879ae3b0057f577226d4ccnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2019-15792cnnvd
- https://packetstormsecurity.com/files/155304/Ubuntu-Security-Notice-USN-4184-1.htmlcnnvd
- https://packetstormsecurity.com/files/155332/Ubuntu-Security-Notice-USN-4183-2.htmlcnnvd
- https://usn.ubuntu.com/4183-1/cnnvd
- https://usn.ubuntu.com/4183-2/cnnvd
- https://usn.ubuntu.com/usn/usn-4183-1cnnvd
- https://usn.ubuntu.com/usn/usn-4184-1cnnvd
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan