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Bug 1529123 - (CVE-2017-17863) CVE-2017-17863 kernel: integer overflow in static int check_alu_op function in bpf/verifier.c
CVE-2017-17863 kernel: integer overflow in static int check_alu_op function i...
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20171223,repor...
: Security
Depends On: 1535005 1529125
Blocks: 1528364
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Reported: 2017-12-26 09:33 EST by Pedro Sampaio
Modified: 2018-08-28 18:30 EDT (History)
43 users (show)

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Description Pedro Sampaio 2017-12-26 09:33:08 EST 
kernel/bpf/verifier.c in the Linux kernel 4.9.x through 4.9.71 does not check the relationship between pointer values and the BPF stack, which allows local users to cause a denial of service (integer overflow or invalid memory access) or possibly have unspecified other impact.

References:

https://anonscm.debian.org/cgit/kernel/linux.git/tree/debian/patches/bugfix/all/bpf-reject-out-of-bounds-stack-pointer-calculation.patch?h=stretch-security
https://www.spinics.net/lists/stable/msg206985.html
Comment 1 Pedro Sampaio 2017-12-26 09:48:32 EST 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1529125]
Comment 3 Prasad J Pandit 2018-01-18 00:24:36 EST 
Statement:

This issue does not affect the versions of the kernel package as shipped with Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2.
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