Bug 1655386 (CVE-2018-5856) - CVE-2018-5856 kernel: Use-after-free in sound/soc/qcom/qdsp6/q6asm.c allows for kernel panic
Summary: CVE-2018-5856 kernel: Use-after-free in sound/soc/qcom/qdsp6/q6asm.c allows f...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2018-5856
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1655387
Blocks: 1655388
TreeView+ depends on / blocked
 
Reported: 2018-12-03 04:39 UTC by Sam Fowler
Modified: 2021-02-16 22:43 UTC (History)
49 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2018-12-08 10:05:18 UTC
Embargoed:

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Description Sam Fowler 2018-12-03 04:39:34 UTC 
The Linux kernel is vulnerable to a use-after-free in sound/soc/qcom/qdsp6/q6asm.c due to a race condition. An attacker could exploit this to cause a kernel panic or other potential unspecified impact.

CAF Patch:

https://source.codeaurora.org/quic/la/kernel/msm-3.18/commit/?id=3b666735fcc49f5cd3a63440fdc0667ae9316f17

https://source.codeaurora.org/quic/la/platform/vendor/opensource/audio-kernel/commit/?id=7ab92dd2952d59f3c15c856effe94bba1858e3ff

Reference:

https://www.codeaurora.org/security-bulletin/2018/11/05/november-2018-code-aurora-forum-security-bulletin#_CVE-2018-5856
Comment 1 Sam Fowler 2018-12-03 04:40:34 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1655387]
Comment 2 Justin M. Forbes 2018-12-04 15:51:55 UTC 
This code was never in upstream. The fix happened before the driver was ever mainlined.
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