vulnerability
Ubuntu: (Multiple Advisories) (CVE-2016-6828): Linux kernel vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:N/C:N/I:N/A:C) | Oct 13, 2016 | Jul 1, 2017 | Mar 27, 2026 |
Severity
5
CVSS
(AV:L/AC:L/Au:N/C:N/I:N/A:C)
Published
Oct 13, 2016
Added
Jul 1, 2017
Modified
Mar 27, 2026
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.
Solutions
ubuntu-upgrade-linux-image-3-13-0-98-genericubuntu-upgrade-linux-image-3-13-0-98-generic-lpaeubuntu-upgrade-linux-image-3-13-0-98-lowlatencyubuntu-upgrade-linux-image-3-13-0-98-powerpc-e500ubuntu-upgrade-linux-image-3-13-0-98-powerpc-e500mcubuntu-upgrade-linux-image-3-13-0-98-powerpc-smpubuntu-upgrade-linux-image-3-13-0-98-powerpc64-embubuntu-upgrade-linux-image-3-13-0-98-powerpc64-smpubuntu-upgrade-linux-image-3-2-0-111-genericubuntu-upgrade-linux-image-3-2-0-111-generic-paeubuntu-upgrade-linux-image-3-2-0-111-highbankubuntu-upgrade-linux-image-3-2-0-111-omapubuntu-upgrade-linux-image-3-2-0-111-powerpc-smpubuntu-upgrade-linux-image-3-2-0-111-powerpc64-smpubuntu-upgrade-linux-image-3-2-0-111-virtualubuntu-upgrade-linux-image-3-2-0-1489-omap4ubuntu-upgrade-linux-image-4-4-0-1027-raspi2ubuntu-upgrade-linux-image-4-4-0-1030-snapdragonubuntu-upgrade-linux-image-4-4-0-42-genericubuntu-upgrade-linux-image-4-4-0-42-generic-lpaeubuntu-upgrade-linux-image-4-4-0-42-lowlatencyubuntu-upgrade-linux-image-4-4-0-42-powerpc-e500mcubuntu-upgrade-linux-image-4-4-0-42-powerpc-smpubuntu-upgrade-linux-image-4-4-0-42-powerpc64-embubuntu-upgrade-linux-image-4-4-0-42-powerpc64-smp
References
Rapid7 Labs
2026 Global Threat Landscape Report
The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.