CVE-2021-3489
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2021-3489
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3489.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-3489
- Aliases
-
- A-190877279
- PUB-A-190877279
- Related
- Published
- 2021-06-04T02:15:07Z
- Modified
- 2024-10-08T15:12:10.659047Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
The eBPF RINGBUF bpfringbufreserve() function in the Linux kernel did not check that the allocated size was smaller than the ringbuf size, allowing an attacker to perform out-of-bounds writes within the kernel and therefore, arbitrary code execution. This issue was fixed via commit 4b81ccebaeee ("bpf, ringbuf: Deny reserve of buffers larger than ringbuf") (v5.13-rc4) and backported to the stable kernels in v5.12.4, v5.11.21, and v5.10.37. It was introduced via 457f44363a88 ("bpf: Implement BPF ring buffer and verifier support for it") (v5.8-rc1).
- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git/commit/?id=4b81ccebaeee885ab1aa1438133f2991e3a2b6ea
- https://security.netapp.com/advisory/ntap-20210716-0004/
- https://ubuntu.com/security/notices/USN-4949-1
- https://ubuntu.com/security/notices/USN-4950-1
- https://www.zerodayinitiative.com/advisories/ZDI-21-590/
- https://www.openwall.com/lists/oss-security/2021/05/11/10
- https://security-tracker.debian.org/tracker/CVE-2021-3489
Affected packages
Debian:11 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:12 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source