CVE-2023-3812CWE-787

Kernel: tun: bugs for oversize packet when napi frags enabled in tun_napi_alloc_frags

High · published July 24, 2023

CVSS v3.1
7.8
EPSS
0%
Percentile
26.7
In the wild
Unconfirmed
What it is

An out-of-bounds memory access flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user generates a malicious (too big) networking packet when napi frags is enabled. This flaw allows a local user to crash or potentially escalate their privileges on the system.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00344 · 26.7th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2023-07-24T15:19Z
EPSS history
Timeline
  • 24 JUL 15:19Z
    Kernel: tun: bugs for oversize packet when napi frags enabled in tun_napi_alloc_frags
    cvelistv5