8.3
High
Exploited
CVE-2021-22555 Linux Kernel Heap Out-of-Bounds Write Vulnerability
Active exploitation observed
· CISA KEV catalogue
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.
Ransomware campaigns
Not observed so far
Weakness
CWE-787
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
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux kernel 2.6 | 2.6.19-rc1 → latest | No fix stated |
References
- github.com github.com
- git.kernel.org git.kernel.org
- git.kernel.org git.kernel.org
- packetstormsecurity.com packetstormsecurity.com
- security.netapp.com security.netapp.com
- packetstormsecurity.com packetstormsecurity.com
- packetstormsecurity.com packetstormsecurity.com
- packetstormsecurity.com packetstormsecurity.com
- packetstormsecurity.com packetstormsecurity.com
Timeline
- Published
- Added to the KEV catalogue
- Last modified
Other CVEs of Linux kernel
The 47 CVEs of Linux kernel →
CVE-2023-3220
An issue was discovered in the Linux kernel through 6.1-rc8
5.5
Medium
CVE-2023-1652
A use-after-free flaw was found in nfsd4_ssc_setup_dul in fs/nfsd/nfs4proc.c in the NFS filesystem in the Linux Kernel
7.1
High
CVE-2023-1077
In the Linux kernel, pick_next_rt_entity() may return a type confused entry, not detected by the BUG_ON condition, as…
Not rated
CVE-2023-1078
A flaw was found in the Linux Kernel in RDS (Reliable Datagram Sockets) protocol
7.8
High