The ip6_find_1stfragopt function in net/ipv6/output_core.c in the Linux kernel through 4.12.3 allows local users to cause a denial of service (integer overflow and infinite loop) by leveraging the ability to open a raw socket.
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
| Link | Tags |
|---|---|
| http://www.debian.org/security/2017/dsa-3927 | vendor advisory |
| https://access.redhat.com/errata/RHSA-2018:0169 | vendor advisory |
| https://usn.ubuntu.com/3583-2/ | vendor advisory |
| https://access.redhat.com/errata/RHSA-2017:2918 | vendor advisory |
| https://access.redhat.com/errata/RHSA-2017:2931 | vendor advisory |
| http://www.securityfocus.com/bid/99953 | vdb entry |
| https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0 | |
| https://usn.ubuntu.com/3583-1/ | vendor advisory |
| http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6399f1fae4ec29fab5ec76070435555e256ca3a6 | patch third party advisory issue tracking |
| http://www.debian.org/security/2017/dsa-3945 | vendor advisory |
| https://github.com/torvalds/linux/commit/6399f1fae4ec29fab5ec76070435555e256ca3a6 | patch third party advisory issue tracking |
| https://access.redhat.com/errata/RHSA-2017:2930 | vendor advisory |