CVE-2019-15792
HighIn 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 3.1 score
7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness type
CWE-843CVE-2019-15792 is classified as CWE-843
See CWE-843 on MITRE CWE for full details on this weakness type.
References
The following references provide additional information about CVE-2019-15792 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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Ubuntu Securityhttps://usn.ubuntu.com/usn/usn-4183-1Vendor Advisory
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Ubuntu Securityhttps://usn.ubuntu.com/usn/usn-4184-1Vendor Advisory
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PatchKernel patch commithttps://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/eoan/commit/?id=5df147c8140efc71ac0879ae3b0057f577226d4c
Frequently asked questions
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What is CVE-2019-15792?
CVE-2019-15792 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . CVE-2019-15792 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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What is the CVSS score for CVE-2019-15792?
CVE-2019-15792 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. -
Is there a patch available for CVE-2019-15792?
No patch is currently available for CVE-2019-15792. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
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Is CVE-2019-15792 actively exploited?
No — CVE-2019-15792 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.