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.
History

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cve-icon MITRE

Status: PUBLISHED

Assigner: canonical

Published: 2020-04-23T23:55:24.126556Z

Updated: 2024-09-16T23:41:36.466Z

Reserved: 2019-08-29T00:00:00

Link: CVE-2019-15792

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2020-04-24T00:15:11.777

Modified: 2020-05-01T14:51:51.907

Link: CVE-2019-15792

cve-icon Redhat

No data.