vulnerability

Oracle Linux: CVE-2016-6828: ELSA-2017-3508: Unbreakable Enterprise kernel security update (IMPORTANT) (Multiple Advisories)

Severity
3
CVSS
(AV:L/AC:L/Au:S/C:N/I:P/A:P)
Published
Aug 15, 2016
Added
Jan 11, 2017
Modified
Jan 24, 2025

Description

The tcp_check_send_head function in include/net/tcp.h in the Linux kernel before 4.7.5 does not properly maintain certain SACK state after a failed data copy, which allows local users to cause a denial of service (tcp_xmit_retransmit_queue use-after-free and system crash) via a crafted SACK option.
A use-after-free vulnerability was found in tcp_xmit_retransmit_queue and other tcp_* functions. This condition could allow an attacker to send an incorrect selective acknowledgment to existing connections, possibly resetting a connection.

Solution(s)

oracle-linux-upgrade-kerneloracle-linux-upgrade-kernel-uek
Title
NEW

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