CVE-2021-28906

EUVD-2021-15559
In function read_yin_leaf() in libyang <= v1.0.225, it doesn't check whether the value of retval->ext[r] is NULL. In some cases, it can be NULL, which leads to the operation of retval->ext[r]->flags that results in a crash.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 58%
Affected Products (NVD)
VendorProductVersion
cesnetlibyang
𝑥
≤ 1.0.225
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
libyang
bullseye
no-dsa
buster
no-dsa
sid
3.4.2+dfsg-2
fixed
libyang2
bookworm
2.1.30-2
fixed
bullseye
no-dsa
buster
no-dsa
sid
2.1.148-0.2
fixed
trixie
2.1.148-0.2
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
libyang
bionic
dne
focal
needed
groovy
ignored
hirsute
ignored
impish
ignored
jammy
needed
kinetic
ignored
lunar
dne
mantic
dne
noble
dne
trusty
dne
xenial
ignored
Common Weakness Enumeration
References
https://github.com/CESNET/libyang/issues/1455
https://security.gentoo.org/glsa/202107-54
https://github.com/CESNET/libyang/issues/1455
https://security.gentoo.org/glsa/202107-54