CVE-2021-22555

Linux Kernel Heap Out-of-Bounds Write Vulnerability

C400 Firmware

A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c. This allows an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space

7. Jul 2021

Ausgewertete Quellen

• Hersteller
  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/x_tables.c?id=9fa492cdc160cd27ce1046cb36f47d3b2b1efa21
• Hersteller
  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/x_tables.c?id=b29c457a6511435960115c0f548c4360d5f4801d
• Hinweis
  http://packetstormsecurity.com/files/163528/Linux-Kernel-Netfilter-Heap-Out-Of-Bounds-Write.html
• Hinweis
  http://packetstormsecurity.com/files/163878/Kernel-Live-Patch-Security-Notice-LSN-0080-1.html
• Hinweis
  http://packetstormsecurity.com/files/164155/Kernel-Live-Patch-Security-Notice-LSN-0081-1.html
• Hinweis
  http://packetstormsecurity.com/files/164437/Netfilter-x_tables-Heap-Out-Of-Bounds-Write-Privilege-Escalation.html
• Hinweis
  http://packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-LSN-0083-1.html
• Hinweis
  https://security.netapp.com/advisory/ntap-20210805-0010/
• CISA
  https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22555
• CISA
  Linux Kernel Heap Out-of-Bounds Write Vulnerability
• NVD
  CVE-2021-22555
• GitHub
  https://github.com/google/security-research/security/advisories/GHSA-xxx5-8mvq-3528