CVE-2019-15213 - Use After Free

Severity

49%

Complexity

39%

Confidentiality

115%

An issue was discovered in the Linux kernel before 5.2.3. There is a use-after-free caused by a malicious USB device in the drivers/media/usb/dvb-usb/dvb-usb-init.c driver.

An issue was discovered in the Linux kernel before 5.2.3. There is a use-after-free caused by a malicious USB device in the drivers/media/usb/dvb-usb/dvb-usb-init.c driver.

CVSS 3.0 Base Score 4.6. CVSS Attack Vector: physical. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

CVSS 2.0 Base Score 4.9. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (AV:L/AC:L/Au:N/C:N/I:N/A:C).

Demo Examples

Use After Free

CWE-416

The following example demonstrates the weakness.


               
}
free(buf3R2);

Use After Free

CWE-416

The following code illustrates a use after free error:


               
}
free(ptr);
logError("operation aborted before commit", ptr);

When an error occurs, the pointer is immediately freed. However, this pointer is later incorrectly used in the logError function.

Overview

First reported 5 years ago

2019-08-19 22:15:00

Last updated 5 years ago

2019-09-06 00:15:00

Affected Software

Linux Kernel

References

openSUSE-SU-2019:2675

[oss-security] 20190820 Linux kernel: multiple vulnerabilities in the USB subsystem x2

Mailing List, Third Party Advisory

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2.3

Release Notes, Vendor Advisory

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6cf97230cd5f36b7665099083272595c55d72be7

Patch, Vendor Advisory

https://security.netapp.com/advisory/ntap-20190905-0002/

https://syzkaller.appspot.com/bug?id=a53c9c9dd2981bfdbfbcbc1ddbd35595eda8bced

Exploit, Third Party Advisory

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