CVE-2021-33656CWE-787

CVE-2021-33656

Medium · published July 18, 2022

CVSS v3.1
6.8
EPSS
1%
Percentile
48.6
In the wild
Unconfirmed
What it is

When setting font with malicous data by ioctl cmd PIO_FONT,kernel will write memory out of bounds.

The record
Technical detail
CVSS v3.1
6.8 · MEDIUM
Vector
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00611 · 48.6th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2022-07-18T19:15Z
Affected products (5)
ProductVersionsFixed in
openatom/openeulerall versions—
openatom/openeulerall versions—
openatom/openeulerall versions—
linux/linux_kernel< 5.10.1275.10.127
debian/debian_linuxall versions—
References (8)
http://www.openwall.com/lists/oss-security/2022/07/19/3 · [email protected]https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/releases/5.10.127/vt-drop-old-font-ioctls.patch · [email protected]https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html · [email protected]https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2021-33656&packageName=kernel · [email protected]http://www.openwall.com/lists/oss-security/2022/07/19/3 · af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/releases/5.10.127/vt-drop-old-font-ioctls.patch · af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2022/10/msg00000.html · af854a3a-2127-422b-91ae-364da2661108https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2021-33656&packageName=kernel · af854a3a-2127-422b-91ae-364da2661108
EPSS history
Timeline
  • 18 JUL 14:44Z
    When setting font with malicous data by ioctl cmd PIO_FONT,kernel will write memory out of bounds
    cvelistv5