snapd could be made to bypass intended access restrictions through snap content interfaces and layout paths
Published Feb 17, 2022
8.2
HIGHCVSS 3.1
EPSS 0.44%
Description
snapd 2.54.2 fails to perform sufficient validation of snap content interface and layout paths, resulting in the ability for snaps to inject arbitrary AppArmor policy rules via malformed content interface and layout declarations and hence escape strict snap confinement. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1
Affected products
-
- Version unspecifiedStatusaffectedConstraints<=2.54.2
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Canonical Ltd. | Snapd | n/a |
|
Configuration 2
- 18.04
- 20.04
- 21.10
Configuration 3
- 34
- 35
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
1 other source (CVE.org) ▾
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
AV:L/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.44% (0.00437) | 35.65th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.43% (0.00430) | 34.09th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.15% (0.00146) | 32.52th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.08% (0.00080) | 36.19th | v3 (v2023.03.01) |
| May 11, 2024 | 0.08% (0.00080) | 33.85th | v3 (v2023.03.01) |
| Oct 9, 2023 | 0.07% (0.00067) | 27.82th | v3 (v2023.03.01) |
| Sep 25, 2023 | 0.05% (0.00052) | 18.63th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.71th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00950) | 32.28th | v2 (v2022.01.01) |
| Sep 10, 2022 | 0.95% (0.00950) | 30.63th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00950) | 28.61th | v2 (v2022.01.01) |
| Feb 20, 2022 | 0.95% (0.00950) | 14.06th | v2 (v2022.01.01) |
| Feb 18, 2022 | 0.89% (0.00885) | 11.01th | v2 (v2022.01.01) |
References (5)
- http://www.openwall.com/lists/oss-security/2022/02/18/2 mailing-listx_refsource_MLISTExploitMailing ListThird Party Advisory
- https://bugs.launchpad.net/snapd/+bug/1949368 x_refsource_MISCExploitIssue TrackingThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3QTBN7LLZISXIA4KU4UKDR27Q5PXDS2U/ vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XCGHG6LJAVJJ72TMART6A7N4Z6MSTGI7/ vendor-advisoryx_refsource_FEDORA
- https://ubuntu.com/security/notices/USN-5292-1 x_refsource_MISCPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2022/02/18/2 | mailing-listx_refsource_MLISTExploitMailing ListThird Party Advisory | |
| https://bugs.launchpad.net/snapd/+bug/1949368 | x_refsource_MISCExploitIssue TrackingThird Party Advisory | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3QTBN7LLZISXIA4KU4UKDR27Q5PXDS2U/ | vendor-advisoryx_refsource_FEDORA | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XCGHG6LJAVJJ72TMART6A7N4Z6MSTGI7/ | vendor-advisoryx_refsource_FEDORA | |
| https://ubuntu.com/security/notices/USN-5292-1 | x_refsource_MISCPatchVendor Advisory |
Change history (0)
No recorded changes yet.