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CVE
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CVE-2016-6828Date: (C)2016-10-18   (M)2023-12-22


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.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 5.5CVSS Score : 4.9
Exploit Score: 1.8Exploit Score: 3.9
Impact Score: 3.6Impact Score: 6.9
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: LOCALAccess Vector: LOCAL
Attack Complexity: LOWAccess Complexity: LOW
Privileges Required: LOWAuthentication: NONE
User Interaction: NONEConfidentiality: NONE
Scope: UNCHANGEDIntegrity: NONE
Confidentiality: NONEAvailability: COMPLETE
Integrity: NONE 
Availability: HIGH 
  
Reference:
BID-92452
RHSA-2017:0036
RHSA-2017:0086
RHSA-2017:0091
RHSA-2017:0113
http://www.openwall.com/lists/oss-security/2016/08/15/1
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bb1fceca22492109be12640d49f5ea5a544c6bb4
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.7.5
https://bugzilla.redhat.com/show_bug.cgi?id=1367091
https://github.com/torvalds/linux/commit/bb1fceca22492109be12640d49f5ea5a544c6bb4
https://marcograss.github.io/security/linux/2016/08/18/cve-2016-6828-linux-kernel-tcp-uaf.html
https://source.android.com/security/bulletin/2016-11-01.html

CWE    1
CWE-416
OVAL    32
oval:org.secpod.oval:def:111236
oval:org.secpod.oval:def:111235
oval:org.secpod.oval:def:703311
oval:org.secpod.oval:def:111296
...

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