Medium severity5.5NVD Advisory· Published Oct 16, 2016· Updated Jun 17, 2026
CVE-2016-6828
CVE-2016-6828
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
101- osv-coords100 versionspkg:rpm/opensuse/kernel-source&distro=openSUSE%20Tumbleweedpkg:rpm/suse/kernel-bigmem&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4pkg:rpm/suse/kernel-bigmem&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4pkg:rpm/suse/kernel-bigsmp&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3-LTSSpkg:rpm/suse/kernel-bigsmp&distro=SUSE%20Manager%202.1pkg:rpm/suse/kernel-bigsmp&distro=SUSE%20Manager%20Proxy%202.1pkg:rpm/suse/kernel-bigsmp&distro=SUSE%20OpenStack%20Cloud%205pkg:rpm/suse/kernel-compute_debug&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2012%20SP1pkg:rpm/suse/kernel-compute&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2012%20SP1pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP1pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP2-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2012-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2012%20SP1pkg:rpm/suse/kernel-default&distro=SUSE%20Manager%202.1pkg:rpm/suse/kernel-default&distro=SUSE%20Manager%20Proxy%202.1pkg:rpm/suse/kernel-default&distro=SUSE%20OpenStack%20Cloud%205pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2011%20SP4pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP1pkg:rpm/suse/kernel-ec2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2012pkg:rpm/suse/kernel-ec2&distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3pkg:rpm/suse/kernel-ec2&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP2-LTSSpkg:rpm/suse/kernel-ec2&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3-LTSSpkg:rpm/suse/kernel-ec2&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4pkg:rpm/suse/kernel-ec2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4pkg:rpm/suse/kernel-ec2&distro=SUSE%20Manager%202.1pkg:rpm/suse/kernel-ec2&distro=SUSE%20Manager%20Proxy%202.1pkg:rpm/suse/kernel-ec2&distro=SUSE%20OpenStack%20Cloud%205pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP1pkg:rpm/suse/kernel-pae&distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3pkg:rpm/suse/kernel-pae&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP2-LTSSpkg:rpm/suse/kernel-pae&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3-LTSSpkg:rpm/suse/kernel-pae&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4pkg:rpm/suse/kernel-pae&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4pkg:rpm/suse/kernel-ppc64&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4pkg:rpm/suse/kernel-ppc64&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4pkg:rpm/suse/kernel-rt_debug&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2012%20SP1pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2011%20SP4pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2012%20SP1pkg:rpm/suse/kernel-rt_trace&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2011%20SP4pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP1pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP2-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2012-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1pkg:rpm/suse/kernel-source&distro=SUSE%20Manager%202.1pkg:rpm/suse/kernel-source&distro=SUSE%20Manager%20Proxy%202.1pkg:rpm/suse/kernel-source&distro=SUSE%20OpenStack%20Cloud%205pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2011%20SP4pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2012%20SP1pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP1pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP2-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2012-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1pkg:rpm/suse/kernel-syms&distro=SUSE%20Manager%202.1pkg:rpm/suse/kernel-syms&distro=SUSE%20Manager%20Proxy%202.1pkg:rpm/suse/kernel-syms&distro=SUSE%20OpenStack%20Cloud%205pkg:rpm/suse/kernel-syms-rt&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2011%20SP4pkg:rpm/suse/kernel-syms-rt&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2012%20SP1pkg:rpm/suse/kernel-trace&distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3pkg:rpm/suse/kernel-trace&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP2-LTSSpkg:rpm/suse/kernel-trace&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3-LTSSpkg:rpm/suse/kernel-trace&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4pkg:rpm/suse/kernel-trace&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4pkg:rpm/suse/kernel-trace&distro=SUSE%20Manager%202.1pkg:rpm/suse/kernel-trace&distro=SUSE%20Manager%20Proxy%202.1pkg:rpm/suse/kernel-trace&distro=SUSE%20OpenStack%20Cloud%205pkg:rpm/suse/kernel-xen&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP1pkg:rpm/suse/kernel-xen&distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3pkg:rpm/suse/kernel-xen&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP2-LTSSpkg:rpm/suse/kernel-xen&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3-LTSSpkg:rpm/suse/kernel-xen&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4pkg:rpm/suse/kernel-xen&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1pkg:rpm/suse/kernel-xen&distro=SUSE%20Linux%20Enterprise%20Server%2012-LTSSpkg:rpm/suse/kernel-xen&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4pkg:rpm/suse/kernel-xen&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012pkg:rpm/suse/kernel-xen&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1pkg:rpm/suse/kernel-xen&distro=SUSE%20Manager%202.1pkg:rpm/suse/kernel-xen&distro=SUSE%20Manager%20Proxy%202.1pkg:rpm/suse/kernel-xen&distro=SUSE%20OpenStack%20Cloud%205pkg:rpm/suse/kgraft-patch-SLE12-SP1_Update_9&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012pkg:rpm/suse/kgraft-patch-SLE12_Update_19&distro=SUSE%20Linux%20Enterprise%20Server%2012-LTSSpkg:rpm/suse/kgraft-patch-SLE12_Update_19&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012
< 4.8.13-1.1+ 99 more
- (no CPE)range: < 4.8.13-1.1
- (no CPE)range: < 3.0.101-88.1
- (no CPE)range: < 3.0.101-88.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.12.67-60.27.1
- (no CPE)range: < 3.12.67-60.27.1
- (no CPE)range: < 3.12.67-60.64.18.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101-0.7.53.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101-88.1
- (no CPE)range: < 3.12.67-60.64.18.1
- (no CPE)range: < 3.12.61-52.66.1
- (no CPE)range: < 3.0.101-88.1
- (no CPE)range: < 3.12.61-52.66.1
- (no CPE)range: < 3.12.67-60.64.18.1
- (no CPE)range: < 3.12.67-60.64.18.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101-88.3
- (no CPE)range: < 3.12.67-60.64.18.3
- (no CPE)range: < 3.12.67-60.64.18.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101-0.7.53.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101-88.1
- (no CPE)range: < 3.0.101-88.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.12.67-60.64.18.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101-0.7.53.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101-88.1
- (no CPE)range: < 3.0.101-88.1
- (no CPE)range: < 3.0.101-88.1
- (no CPE)range: < 3.0.101-88.1
- (no CPE)range: < 3.12.67-60.27.1
- (no CPE)range: < 3.0.101.rt130-65.1
- (no CPE)range: < 3.12.67-60.27.1
- (no CPE)range: < 3.0.101.rt130-65.1
- (no CPE)range: < 3.12.67-60.64.18.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101-0.7.53.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101-88.1
- (no CPE)range: < 3.12.67-60.64.18.1
- (no CPE)range: < 3.12.61-52.66.1
- (no CPE)range: < 3.0.101-88.1
- (no CPE)range: < 3.12.61-52.66.1
- (no CPE)range: < 3.12.67-60.64.18.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101.rt130-65.1
- (no CPE)range: < 3.12.67-60.27.1
- (no CPE)range: < 3.12.67-60.64.18.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101-0.7.53.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101-88.1
- (no CPE)range: < 3.12.67-60.64.18.1
- (no CPE)range: < 3.12.61-52.66.1
- (no CPE)range: < 3.0.101-88.1
- (no CPE)range: < 3.12.61-52.66.1
- (no CPE)range: < 3.12.67-60.64.18.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101.rt130-65.1
- (no CPE)range: < 3.12.67-60.27.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101-0.7.53.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101-88.1
- (no CPE)range: < 3.0.101-88.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.12.67-60.64.18.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101-0.7.53.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101-88.1
- (no CPE)range: < 3.12.67-60.64.18.1
- (no CPE)range: < 3.12.61-52.66.1
- (no CPE)range: < 3.0.101-88.1
- (no CPE)range: < 3.12.61-52.66.1
- (no CPE)range: < 3.12.67-60.64.18.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 3.0.101-0.47.96.1
- (no CPE)range: < 1-6.3
- (no CPE)range: < 1-2.1
- (no CPE)range: < 1-2.1
Patches
Vulnerability mechanics
References
12- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/nvdIssue TrackingPatch
- github.com/torvalds/linux/commit/bb1fceca22492109be12640d49f5ea5a544c6bb4nvdIssue TrackingPatch
- www.openwall.com/lists/oss-security/2016/08/15/1nvdExploitThird Party Advisory
- www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.7.5nvdRelease NotesThird Party Advisory
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingThird Party Advisory
- rhn.redhat.com/errata/RHSA-2017-0036.htmlnvd
- rhn.redhat.com/errata/RHSA-2017-0086.htmlnvd
- rhn.redhat.com/errata/RHSA-2017-0091.htmlnvd
- rhn.redhat.com/errata/RHSA-2017-0113.htmlnvd
- www.securityfocus.com/bid/92452nvd
- marcograss.github.io/security/linux/2016/08/18/cve-2016-6828-linux-kernel-tcp-uaf.htmlnvd
- source.android.com/security/bulletin/2016-11-01.htmlnvd
News mentions
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