// For flags

CVE-2015-5156

kernel: buffer overflow with fraglist larger than MAX_SKB_FRAGS + 2 in virtio-net

Severity Score

6.1
*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

The virtnet_probe function in drivers/net/virtio_net.c in the Linux kernel before 4.2 attempts to support a FRAGLIST feature without proper memory allocation, which allows guest OS users to cause a denial of service (buffer overflow and memory corruption) via a crafted sequence of fragmented packets.

La función virtnet_probe en drivers/net/virtio_net.c en el kernel de Linux en versiones anteriores a 4.2 intenta dar soporte a la funcionalidad FRAGLIST sin asignación adecuada de memoria, lo que permite a usuarios invitados del SO provocar una denegación de servicio (desbordamiento del buffer y corrupción de memoria) a través de una secuencia manipulada de paquetes fragmentados.

A buffer overflow flaw was found in the way the Linux kernel's virtio-net subsystem handled certain fraglists when the GRO (Generic Receive Offload) functionality was enabled in a bridged network configuration. An attacker on the local network could potentially use this flaw to crash the system, or, although unlikely, elevate their privileges on the system.

*Credits: N/A
CVSS Scores
Attack Vector
Adjacent
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete
Attack Vector
Adjacent
Attack Complexity
High
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2015-07-01 CVE Reserved
  • 2015-09-23 CVE Published
  • 2023-03-07 EPSS Updated
  • 2024-08-06 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
  • CWE-122: Heap-based Buffer Overflow
CAPEC
References (19)
URL Tag Source
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=48900cb6af4282fa0fb6ff4d72a81aa3dadb5c39 X_refsource_confirm
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html X_refsource_confirm
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html X_refsource_confirm
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html X_refsource_confirm
http://www.securityfocus.com/bid/76230 Vdb Entry
http://www.securitytracker.com/id/1034045 Vdb Entry
https://github.com/torvalds/linux/commit/48900cb6af4282fa0fb6ff4d72a81aa3dadb5c39 X_refsource_confirm
URL Date SRC
URL Date SRC
URL Date SRC
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171454.html 2023-02-12
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169378.html 2023-02-12
http://lists.opensuse.org/opensuse-security-announce/2015-10/msg00009.html 2023-02-12
http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00018.html 2023-02-12
http://rhn.redhat.com/errata/RHSA-2015-1978.html 2023-02-12
http://rhn.redhat.com/errata/RHSA-2016-0855.html 2023-02-12
http://www.debian.org/security/2015/dsa-3364 2023-02-12
http://www.ubuntu.com/usn/USN-2773-1 2023-02-12
http://www.ubuntu.com/usn/USN-2774-1 2023-02-12
http://www.ubuntu.com/usn/USN-2777-1 2023-02-12
https://bugzilla.redhat.com/show_bug.cgi?id=1243852 2016-05-10
https://access.redhat.com/security/cve/CVE-2015-5156 2016-05-10
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
 <= 4.1.10
Search vendor "Linux" for product "Linux Kernel" and version " <= 4.1.10"
-
Affected