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.
https://github.com/torvalds/linux/commit/4afa5f9617927453ac04b24b584f6c718dfb4f45
http://www.openwall.com/lists/oss-security/2016/11/15/2
https://bugzilla.redhat.com/show_bug.cgi?id=1388821
https://access.redhat.com/errata/RHSA-2017:1308
https://access.redhat.com/errata/RHSA-2017:1298
https://access.redhat.com/errata/RHSA-2017:1297
http://www.securityfocus.com/bid/94309
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.6
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4afa5f9617927453ac04b24b584f6c718dfb4f45
Source: Mitre, NVD
Published: 2016-11-28
Updated: 2025-04-12
Base Score: 4.9
Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C
Severity: Medium
Base Score: 5.5
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS: 0.00034