Bug 1696020 (CVE-2019-2025) - CVE-2019-2025 kernel: Use-after-free due to race condition in android/binder.c
Summary: CVE-2019-2025 kernel: Use-after-free due to race condition in android/binder.c
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2019-2025
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1696021
Blocks: 1696022
TreeView+ depends on / blocked
 
Reported: 2019-04-04 03:13 UTC by Pedro Sampaio
Modified: 2019-09-29 15:10 UTC (History)
42 users (show)

Fixed In Version:
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Environment:
Last Closed: 2019-04-16 12:14:07 UTC
Embargoed:


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Description Pedro Sampaio 2019-04-04 03:13:39 UTC
A race condition in the Linux kernel may lead to malicious code being able to free buffers using the BC_FREE_BUFFER ioctl to binder and trigger use-after-free in android/binder.c causing denial of service.

Upstream patch:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7bada55ab50697861eee6bb7d60b41e68a961a9c

Comment 1 Pedro Sampaio 2019-04-04 03:14:03 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1696021]

Comment 2 Justin M. Forbes 2019-04-04 13:12:10 UTC
While Fedora does not enable the android drivers, this was fixed upstream in 4.20 kernels.


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