CVE-2016-6828
Last modified
CVE-2016-6828 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.19% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | <= 4.7.4 |
References
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.7.5Release Notes, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/08/15/1Exploit, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1367091Issue Tracking, Third Party Advisory
- https://github.com/torvalds/linux/commit/bb1fceca22492109be12640d49f5ea5a544c6bb4Issue Tracking, Patch
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.7.5Release Notes, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/08/15/1Exploit, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1367091Issue Tracking, Third Party Advisory
- https://github.com/torvalds/linux/commit/bb1fceca22492109be12640d49f5ea5a544c6bb4Issue Tracking, Patch
Timeline
- Published
- Last Modified
- Status
- Modified
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