CVE-2016-8646

Severity: medium (CVSS 5.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-11-28 · updated 2026-06-17
Weakness: CWE-476

Description

The hash_accept function in crypto/algif_hash.c in the Linux kernel before 4.3.6 allows local users to cause a denial of service (OOPS) by attempting to trigger use of in-kernel hash algorithms for a socket that has received zero bytes of data.

Affected products

Linux kernel: through 4.3.5

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4afa5f9617927453ac04b24b584f6c718dfb4f45
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.6
http://www.openwall.com/lists/oss-security/2016/11/15/2
http://www.securityfocus.com/bid/94309
https://access.redhat.com/errata/RHSA-2017:1297
https://access.redhat.com/errata/RHSA-2017:1298
https://access.redhat.com/errata/RHSA-2017:1308
https://bugzilla.redhat.com/show_bug.cgi?id=1388821
https://github.com/torvalds/linux/commit/4afa5f9617927453ac04b24b584f6c718dfb4f45
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4afa5f9617927453ac04b24b584f6c718dfb4f45
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.6
http://www.openwall.com/lists/oss-security/2016/11/15/2

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