Vulnerability · Published Aug 5, 2021 · Assigned by redhat
CVE-2021-3655
Low 3.3
In plain English
A low-severity security flaw in kernel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 24% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)3.3Low
Exploit odds (30 days)0.3%top 76.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A vulnerability was found in the Linux kernel in versions prior to v5.14-rc1. Missing size validations on inbound SCTP packets may allow the kernel to read uninitialized memory.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | linux | 5.10.46-3 | DEBIAN-CVE-2021-3655 |
| Debian:13 | linux | 5.10.46-3 | DEBIAN-CVE-2021-3655 |
| Debian:14 | linux | 5.10.46-3 | DEBIAN-CVE-2021-3655 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2021-3655 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2021-3655 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2021-3655 |
Affected products (as reported)
Weakness: CWE-909
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1984024 x_refsource_MISC
- [debian-lts-announce] 20211015 [SECURITY] [DLA 2785-1] linux-4.19 security update mailing-list, x_refsource_MLIST
- [debian-lts-announce] 20211216 [SECURITY] [DLA 2843-1] linux security update mailing-list, x_refsource_MLIST