CVE-2015-5156
kernel: buffer overflow with fraglist larger than MAX_SKB_FRAGS + 2 in virtio-net
Severity
ModerateRed Hat Product Security
CVSS 2.0
Review impact separately from score.
Published · August 6, 2015
Updated · June 28, 2026
Description
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.
Statement
This issue did not affect the Linux kernel packages as shipped with Red Hat Enterprise MRG 2.
This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 5. Red Hat Enterprise Linux 5 is now in Production 3 Phase of the support and maintenance life cycle. This has been rated as having Moderate security impact and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 2.0 · 6.8AV:A/AC:H/Au:N/C:C/I:C/A:C
CWE-122 · Heap-based Buffer Overflow