CVE-2021-3416
QEMU: net: Infinite loop in loopback mode may lead to stack overflow
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
A potential stack overflow via infinite loop issue was found in various NIC emulators of QEMU in versions up to and including 5.2.0. The issue occurs in loopback mode of a NIC wherein reentrant DMA checks get bypassed. A guest user/process may use this flaw to consume CPU cycles or crash the QEMU process on the host resulting in DoS scenario.
Se encontró un posible desbordamiento de la pila por medio de un problema de bucle infinito en varios emuladores de NIC de QEMU en versiones hasta 5.2.0 incluyéndola. El problema ocurre en el modo loopback de una NIC en donde son omitidas las comprobaciones DMA reentrantes. Un usuario y proceso invitado puede usar este fallo para consumir ciclos de CPU o bloquear el proceso QEMU en el host, resultando en un escenario DoS
A potential stack overflow via infinite loop issue was found in various NIC emulators of QEMU. The issue occurs in loopback mode of a NIC wherein reentrant DMA checks get bypassed. A guest user/process may use this flaw to consume CPU cycles or crash the QEMU process on the host resulting in DoS scenario.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2021-02-25 CVE Reserved
- 2021-03-18 CVE Published
- 2023-03-08 EPSS Updated
- 2024-08-03 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')
CAPEC
References (7)
| URL | Tag | Source |
|---|---|---|
| https://lists.debian.org/debian-lts-announce/2021/04/msg00009.html | Mailing List |
|
| https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html | Mailing List |
|
| https://security.netapp.com/advisory/ntap-20210507-0002 | Third Party Advisory |
|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1932827 | 2021-09-30 | |
| https://www.openwall.com/lists/oss-security/2021/02/26/1 | 2023-02-12 |
| URL | Date | SRC |
|---|---|---|
| https://security.gentoo.org/glsa/202208-27 | 2023-02-12 | |
| https://access.redhat.com/security/cve/CVE-2021-3416 | 2021-09-30 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Qemu Search vendor "Qemu" | Qemu Search vendor "Qemu" for product "Qemu" | <= 5.2.0 Search vendor "Qemu" for product "Qemu" and version " <= 5.2.0" | - |
Affected
| ||||||
| Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 33 Search vendor "Fedoraproject" for product "Fedora" and version "33" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 6.0 Search vendor "Redhat" for product "Enterprise Linux" and version "6.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 7.0 Search vendor "Redhat" for product "Enterprise Linux" and version "7.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 8.0 Search vendor "Redhat" for product "Enterprise Linux" and version "8.0" | - |
Affected
| ||||||
| Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 8.0 Search vendor "Redhat" for product "Enterprise Linux" and version "8.0" | advanced_virtualization |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0" | - |
Affected
| ||||||