Add Netfilter heap out-of-bounds write (CVE-2021-22555) (#90)

Author: bcoles

linux-exploit-suggester.sh

@@ -904,6 +904,20 @@ author: GRIMM
 EOF
 )
 
+EXPLOITS[((n++))]=$(cat <<EOF
+Name: ${txtgrn}[CVE-2021-22555]${txtrst} Netfilter heap out-of-bounds write
+Reqs: pkg=linux-kernel,ver>=2.6.19,ver<=5.12-rc6
+Tags: ubuntu=20.04{kernel:5.8.0-*}
+Rank: 1
+analysis-url: https://google.github.io/security-research/pocs/linux/cve-2021-22555/writeup.html
+src-url: https://raw.githubusercontent.com/google/security-research/master/pocs/linux/cve-2021-22555/exploit.c
+ext-url: https://raw.githubusercontent.com/bcoles/kernel-exploits/master/CVE-2021-22555/exploit.c
+Comments: ip_tables kernel module must be loaded
+exploit-db: 50135
+author: theflow (orginal exploit author); bcoles (author of exploit update at 'ext-url')
+EOF
+)
+
 ############ USERSPACE EXPLOITS ###########################
 n=0