CVE-2021-22556

The Security Team discovered an integer overflow bug that allows an attacker with code execution to issue memory cache invalidation operations on pages that they dont own, allowing them to control kernel memory from userspace. We recommend upgrading to kernel version 4.1 or beyond.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
5.3 MEDIUM
LOCAL
HIGH
LOW
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N
GoogleCNA
5.3 MEDIUM
LOCAL
HIGH
LOW
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N
CVEADP
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CISA-ADPADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 2%
VendorProductVersion
googlefuchsia
𝑥
< 4.1
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://fuchsia-review.googlesource.com/c/fuchsia/+/570881
https://fuchsia.dev/whats-new/release-notes/f4-1
https://fuchsia-review.googlesource.com/c/fuchsia/+/570881
https://fuchsia.dev/whats-new/release-notes/f4-1