CVE-2017-18595 - Double Free

Severity

72%

Complexity

39%

Confidentiality

165%

An issue was discovered in the Linux kernel before 4.14.11. A double free may be caused by the function allocate_trace_buffer in the file kernel/trace/trace.c.

An issue was discovered in the Linux kernel before 4.14.11. A double free may be caused by the function allocate_trace_buffer in the file kernel/trace/trace.c.

CVSS 3.0 Base Score 7.8. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

CVSS 2.0 Base Score 7.2. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (AV:L/AC:L/Au:N/C:C/I:C/A:C).

Demo Examples

Double Free

CWE-415

Double Free

CWE-415

While contrived, this code should be exploitable on Linux distributions which do not ship with heap-chunk check summing turned on.


               
}
free(buf1R2);

Overview

First reported 5 years ago

2019-09-04 21:15:00

Last updated 5 years ago

2019-10-11 00:15:00

Affected Software

Linux Kernel

References

openSUSE-SU-2019:2308

openSUSE-SU-2019:2307

https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.11

Mailing List, Vendor Advisory

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4397f04575c44e1440ec2e49b6302785c95fd2f8

Mailing List, Patch, Vendor Advisory

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