CVE-2016-8636

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-02-22 · updated 2026-06-17
Weakness: CWE-190

Description

Integer overflow in the mem_check_range function in drivers/infiniband/sw/rxe/rxe_mr.c in the Linux kernel before 4.9.10 allows local users to cause a denial of service (memory corruption), obtain sensitive information from kernel memory, or possibly have unspecified other impact via a write or read request involving the "RDMA protocol over infiniband" (aka Soft RoCE) technology.

Affected products

Linux kernel: from 4.8 before 4.9.10 — fixed in 4.9.10

How to fix

Upgrade to a fixed version: Linux kernel 4.9.10. Check the vendor advisory for mitigations.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=647bf3d8a8e5777319da92af672289b2a6c4dc66
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.10
http://www.openwall.com/lists/oss-security/2017/02/11/9
http://www.securityfocus.com/bid/96189
https://bugzilla.redhat.com/show_bug.cgi?id=1421981
https://eyalitkin.wordpress.com/2017/02/11/cve-publication-cve-2016-8636/
https://github.com/torvalds/linux/commit/647bf3d8a8e5777319da92af672289b2a6c4dc66
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=647bf3d8a8e5777319da92af672289b2a6c4dc66
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.10
http://www.openwall.com/lists/oss-security/2017/02/11/9
http://www.securityfocus.com/bid/96189
https://bugzilla.redhat.com/show_bug.cgi?id=1421981

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