CVE-2021-3695
- Source
- https://cve.org/CVERecord?id=CVE-2021-3695
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-3695.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2021-3695
- Downstream
- Related
- Published
- 2022-07-06T16:15:08.210Z
- Modified
- 2026-02-02T21:33:47.254525Z
- Severity
-
- 4.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L CVSS Calculator
- Summary
- [none]
- Details
-
A crafted 16-bit grayscale PNG image may lead to a out-of-bounds write in the heap area. An attacker may take advantage of that to cause heap data corruption or eventually arbitrary code execution and circumvent secure boot protections. This issue has a high complexity to be exploited as an attacker needs to perform some triage over the heap layout to achieve signifcant results, also the values written into the memory are repeated three times in a row making difficult to produce valid payloads. This flaw affects grub2 versions prior grub-2.12.
- References
Affected packages
Git / github.com/qemu/qemu
Affected ranges
- Type
- GIT
- Repo
- https://github.com/qemu/qemu
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
Affected versions
v0.*
v0.1.0
v0.1.1
v0.1.3
v0.1.4
v0.1.5
v0.1.6
v0.11.0-rc0
v0.12.0-rc0
v0.13.0-rc0
v0.14.0-rc0
v0.15.0-rc0
v0.2.0
v0.3.0
v0.4.0
v0.4.1
v0.4.2
v0.4.3
v0.4.4
v0.5.0
v1.*
v1.0
v1.0-rc0
v1.0-rc1
v1.0-rc2
v1.0-rc3
v1.0-rc4
v1.1-rc0
v1.1-rc1
v1.1-rc2
v1.1.0
v1.1.0-rc2
v1.1.0-rc3
v1.1.0-rc4
v1.2.0
v1.2.0-rc0
v1.2.0-rc1
v1.2.0-rc2
v1.2.0-rc3
v1.3.0
v1.3.0-rc0
v1.3.0-rc1
v1.3.0-rc2
v1.4.0
v1.4.0-rc0
v1.4.0-rc1
v1.4.0-rc2
v1.5.0
v1.5.0-rc0
v1.5.0-rc1
v1.5.0-rc2
v1.5.0-rc3
v1.6.0
v1.6.0-rc0
v1.6.0-rc1
v1.6.0-rc2
v1.6.0-rc3
v1.7.0
v1.7.0-rc0
v1.7.0-rc1
v1.7.0-rc2
v2.*
v2.0.0
v2.0.0-rc0
v2.0.0-rc1
v2.0.0-rc2
v2.0.0-rc3
v2.1.0
v2.1.0-rc0
v2.1.0-rc1
v2.1.0-rc2
v2.1.0-rc3
v2.1.0-rc4
v2.1.0-rc5
v2.10.0
v2.10.0-rc0
v2.10.0-rc1
v2.10.0-rc2
v2.10.0-rc3
v2.10.0-rc4
v2.11.0
v2.11.0-rc0
v2.11.0-rc1
v2.11.0-rc2
v2.11.0-rc3
v2.11.0-rc4
v2.11.0-rc5
v2.12.0-rc0
v2.12.0-rc1
v2.12.0-rc2
v2.12.0-rc3
v2.12.0-rc4
v2.2.0
v2.2.0-rc0
v2.2.0-rc1
v2.2.0-rc2
v2.2.0-rc3
v2.2.0-rc4
v2.2.0-rc5
v2.3.0
v2.3.0-rc0
v2.3.0-rc1
v2.3.0-rc2
v2.3.0-rc3
v2.3.0-rc4
v2.4.0
v2.4.0-rc0
v2.4.0-rc1
v2.4.0-rc2
v2.4.0-rc3
v2.4.0-rc4
v2.5.0
v2.5.0-rc0
v2.5.0-rc1
v2.5.0-rc2
v2.5.0-rc3
v2.5.0-rc4
v2.6.0
v2.6.0-rc0
v2.6.0-rc1
v2.6.0-rc2
v2.6.0-rc3
v2.6.0-rc4
v2.6.0-rc5
v2.7.0
v2.7.0-rc0
v2.7.0-rc1
v2.7.0-rc2
v2.7.0-rc3
v2.7.0-rc4
v2.7.0-rc5
v2.8.0
v2.8.0-rc0
v2.8.0-rc1
v2.8.0-rc2
v2.8.0-rc3
v2.8.0-rc4
v2.9.0
v2.9.0-rc0
v2.9.0-rc1
v2.9.0-rc2
v2.9.0-rc3
v2.9.0-rc4
v2.9.0-rc5