Bug 1735630 (CVE-2019-13648) - CVE-2019-13648 kernel: denial of service in arch/powerpc/kernel/signal_32.c and arch/powerpc/kernel/signal_64.c via sigreturn() system call
Summary: CVE-2019-13648 kernel: denial of service in arch/powerpc/kernel/signal_32.c a...
Keywords:
Status: NEW
Alias: CVE-2019-13648
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: 1735631
Blocks: 1732753 1732823 1735632
TreeView+ depends on / blocked
 
Reported: 2019-08-01 07:43 UTC by Dhananjay Arunesh
Modified: 2019-09-29 15:18 UTC (History)
44 users (show)

Fixed In Version:
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Description Dhananjay Arunesh 2019-08-01 07:43:28 UTC
A vulnerability was found in on the powerpc platform, when hardware transactional memory is disabled, a local user can cause a denial of service (TM Bad Thing exception and system crash) via a sigreturn() system call that sends a crafted signal frame. This affects arch/powerpc/kernel/signal_32.c and arch/powerpc/kernel/signal_64.c.

Reference:
https://patchwork.ozlabs.org/patch/1133904/
https://git.kernel.org/torvalds/c/f16d80b75a096c52354c6e0a574993f3b0dfbdfe
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/tools/testing/selftests/powerpc/signal/sigfuz.c?h=v5.2

Comment 1 Dhananjay Arunesh 2019-08-01 07:43:55 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1735631]


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