Use-after-free in Linux kernel - CVE-2019-19529
Published: December 3, 2019 / Updated: July 17, 2020
Vulnerability identifier: #VU30565
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-19529
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to use-after-free error in the drivers/net/can/usb/mcba_usb.c driver, aka CID-4d6636498c41. A local user can use a malicious USB device to trigger use-after-free error and execute arbitrary code on the system with elevated privileges.
Affected software
Linux kernel
Ubuntu
linux-kvm (Ubuntu package)
linux-snapdragon (Ubuntu package)
linux-hwe (Ubuntu package)
linux-gcp (Ubuntu package)
linux-azure (Ubuntu package)
linux (Ubuntu package)
linux-raspi2 (Ubuntu package)
linux-oem (Ubuntu package)
linux-aws (Ubuntu package)
linux-oracle (Ubuntu package)
linux-gke-4.15 (Ubuntu package)
linux-aws-hwe (Ubuntu package)
Ubuntu
linux-kvm (Ubuntu package)
linux-snapdragon (Ubuntu package)
linux-hwe (Ubuntu package)
linux-gcp (Ubuntu package)
linux-azure (Ubuntu package)
linux (Ubuntu package)
linux-raspi2 (Ubuntu package)
linux-oem (Ubuntu package)
linux-aws (Ubuntu package)
linux-oracle (Ubuntu package)
linux-gke-4.15 (Ubuntu package)
linux-aws-hwe (Ubuntu package)
How to mitigate CVE-2019-19529
Update to version 5.3.11.
Linux kernel - update to 5.3.11
linux-kvm (Ubuntu package) - update to 4.15.0-1052.52
linux-snapdragon (Ubuntu package) - update to 4.15.0-1070.77
linux-hwe (Ubuntu package) - update to 4.15.0-74.83~16.04.1
linux-gcp (Ubuntu package) - update to 4.15.0-1052.56
linux-azure (Ubuntu package) - update to 4.15.0-1066.71
linux (Ubuntu package) - update to 4.15.0-74.84
linux-raspi2 (Ubuntu package) - update to 4.15.0-1053.57
linux-oem (Ubuntu package) - update to 4.15.0-1066.76
linux-aws (Ubuntu package) - update to 4.15.0-1057.59
linux-oracle (Ubuntu package) - addressed in versions 4.15.0-1031.34~16.04.1, 4.15.0-1031.34
linux-gke-4.15 (Ubuntu package) - update to 4.15.0-1050.53
linux-aws-hwe (Ubuntu package) - update to 4.15.0-1057.59~16.04.1
linux-kvm (Ubuntu package) - update to 4.15.0-1052.52
linux-snapdragon (Ubuntu package) - update to 4.15.0-1070.77
linux-hwe (Ubuntu package) - update to 4.15.0-74.83~16.04.1
linux-gcp (Ubuntu package) - update to 4.15.0-1052.56
linux-azure (Ubuntu package) - update to 4.15.0-1066.71
linux (Ubuntu package) - update to 4.15.0-74.84
linux-raspi2 (Ubuntu package) - update to 4.15.0-1053.57
linux-oem (Ubuntu package) - update to 4.15.0-1066.76
linux-aws (Ubuntu package) - update to 4.15.0-1057.59
linux-oracle (Ubuntu package) - addressed in versions 4.15.0-1031.34~16.04.1, 4.15.0-1031.34
linux-gke-4.15 (Ubuntu package) - update to 4.15.0-1050.53
linux-aws-hwe (Ubuntu package) - update to 4.15.0-1057.59~16.04.1
External References
- http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00029.html
- http://www.openwall.com/lists/oss-security/2019/12/03/4
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.11
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4d6636498c41891d0482a914dd570343a838ad79
- https://usn.ubuntu.com/4225-1/
- https://usn.ubuntu.com/4225-2/
- https://usn.ubuntu.com/4226-1/
- https://usn.ubuntu.com/4227-1/
- https://usn.ubuntu.com/4227-2/