The tcpmssmanglepacket function in net/netfilter/xtTCPMSS.c in the Linux kernel before 4.11, and 4.9.x before 4.9.36, allows remote attackers to cause a denial of service (use-after-free and memory corruption) or possibly have unspecified other impact by leveraging the presence of xtTCPMSS in an iptables action.
In /drivers/isdn/i4l/isdnnet.c: A user-controlled buffer is copied into a local buffer of constant size using strcpy without a length check which can cause a buffer overflow. This affects the Linux kernel 4.9-stable tree, 4.12-stable tree, 3.18-stable tree, and 4.4-stable tree.
udp.c in the Linux kernel before 4.5 allows remote attackers to execute arbitrary code via UDP traffic that triggers an unsafe second checksum calculation during execution of a recv system call with the MSGPEEK flag.
An issue was found in the Linux kernel ipv6 implementation of GRE tunnels which allows a remote attacker to trigger an out-of-bounds access. At this time we understand no trust barrier has been crossed and there is no security implications in this flaw.
References:
http://seclists.org/oss-sec/2017/q1/323
Upstream patch:
https://git.kernel.org/cgit/linux/kernel/git/davem/net.git/commit/?id=7892032cfe67f4bde6fc2ee967e45a8fbaf33756
A flaw was found in the Linux kernels implementation of sctp protocol in which a remote attacker can trigger an out of bounds read with an offset of up to 64kB. This may panic the machine with a page-fault and the out-of-bounds data does not seem to be returned to the remote attacker.
For this attack to be sucessful, the kernel needs to have both the SCTP protocol module loaded and a process listening as an SCTP server.
Upstream patch:
https://github.com/torvalds/linux/commit/bf911e985d6bbaa328c20c3e05f4eb03de11fdd6
CVE assignment:
http://seclists.org/oss-sec/2016/q4/509
A use after free vulnerability was found in the kernels socket recvmsg subsystem. This may allows remote attackers to corrupt memory and may allow execution of arbitrary code. This corruption takes place during the error handling routines within sysrecvmmsg() function.
To attack the kernel using this method the system must be running application using the UDP recvmmsg syscall().
Upstream patch:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=34b88a68f26a75e4fded796f1a49c40f82234b7d
Upstream discussion: https://patchwork.kernel.org/patch/8093221/
Additional Write up: https://blog.lizzie.io/notes-about-cve-2016-7117.html
Last updated 24 July 2024
A flaw was found in the CXGB3 kernel driver when the network was considered congested. The kernel would incorrectly misinterpret the congestion as an error condition and incorrectly free/clean up the skb. When the device would then send the skb's queued, these structures would be referenced and may panic the system or allow an attacker to escalate privileges in a use-after-free scenario.
From the patch:
----
The cxgb3send() functions return NETXMIT values, which are positive integers values. So don't treat positive return values as an error. ----
Upstream commit: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=67f1aee6f45059fd6b0f5b0ecb2c97ad0451f6b3
CVE assignment: http://seclists.org/oss-sec/2016/q1/311
Last updated 24 July 2024