CVE-2021-22555: Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE
High · CVSS 8.3 (CVSS 3.1)KEV known exploitedEPSS 78.7%, 100th percentilePublished Updated Assigner: Google
In CISA’s Known Exploited Vulnerabilities catalog: Linux Kernel Heap Out-of-Bounds Write Vulnerability.
Added , federal remediation due . Known ransomware use: Unknown.
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Description
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
Vector CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H · CWE-787
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
Linux Kernel
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- packetstormsecurity.com/files/163528/Linux-Kernel-Netfilter-Heap-Out-Of-Bounds-Write.html (opens in new tab)
- packetstormsecurity.com/files/163878/Kernel-Live-Patch-Security-Notice-LSN-0080-1.html (opens in new tab)
- packetstormsecurity.com/files/164155/Kernel-Live-Patch-Security-Notice-LSN-0081-1.html (opens in new tab)
- packetstormsecurity.com/files/164437/Netfilter-x_tables-Heap-Out-Of-Bounds-Write-Privilege-Es… (opens in new tab)
- packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-LSN-0083-1.html (opens in new tab)
- github.com/google/security-research/security/advisories/GHSA-xxx5-8mvq-3528 (opens in new tab)
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/x_ta… (opens in new tab)
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/netfilter/x_ta… (opens in new tab)
- security.netapp.com/advisory/ntap-20210805-0010/ (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)