CVE-2019-19966 - Use After Free

Severity

43%

Complexity

6%

Confidentiality

60%

In the Linux kernel before 5.1.6, there is a use-after-free in cpia2_exit() in drivers/media/usb/cpia2/cpia2_v4l.c that will cause denial of service, aka CID-dea37a972655.

In the Linux kernel before 5.1.6, there is a use-after-free in cpia2_exit() in drivers/media/usb/cpia2/cpia2_v4l.c that will cause denial of service, aka CID-dea37a972655.

CVSS 3.1 Base Score 4.3. CVSS Attack Vector: physical. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

CVSS 2.0 Base Score 2.1. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (AV:L/AC:L/Au:N/C:N/I:N/A:P).

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

Type

Linux

First reported 5 years ago

2019-12-25 04:15:00

Last updated 4 years ago

2020-03-13 14:15:00

Affected Software

Linux Kernel

Debian Linux 8.0 (Jessie)

8.0

References

openSUSE-SU-2020:0336

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.6

Release Notes, Third Party Advisory

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=dea37a97265588da604c6ba80160a287b72c7bfd

Exploit, Vendor Advisory

[debian-lts-announce] 20200118 [SECURITY] [DLA 2068-1] linux security update

Third Party Advisory

https://security.netapp.com/advisory/ntap-20200204-0002/

Third Party Advisory

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