Kernel: arm64: unhandled esr by el0_sync_compat
Published Aug 25, 2013
4.9
MEDIUMCVSS 2.0
EPSS 0.50%
Description
The bad_mode function in arch/arm64/kernel/traps.c in the Linux kernel before 3.9.5 on the ARM64 platform allows local users to cause a denial of service (system crash) via vectors involving an attempted register access that triggers an unexpected value in the Exception Syndrome Register (ESR).
Affected products
No data.
- ≤ 3.9.4
- 3.9.0
- 3.9.1
- 3.9.2
- 3.9.3
No data.
Red Hat Enterprise Linux 5
kernel
Not affected
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise MRG 2
realtime-kernel
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise MRG 2 | realtime-kernel | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5, 6, and Red Hat Enterprise MRG 2.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:L/AC:L/Au:N/C:N/I:N/A:C
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 2, 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 (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.50% (0.00495) | 40.24th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.50% (0.00495) | 38.32th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.05% (0.00048) | 11.96th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | 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 4, 2022 | 0.95% (0.00950) | 13.46th | v2 (v2022.01.01) |
No CWE recorded.
References (8)
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=9955ac47f4ba1c95ecb6092aeaefb40a22e99268 x_refsource_CONFIRM
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.9.5 x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2013/08/08/12 mailing-listx_refsource_MLISTPatch
- https://access.redhat.com/security/cve/CVE-2013-4220 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=996380 x_refsource_CONFIRMIssue Tracking
- https://github.com/torvalds/linux/commit/9955ac47f4ba1c95ecb6092aeaefb40a22e99268 x_refsource_CONFIRMExploitPatch
- https://nvd.nist.gov/vuln/detail/CVE-2013-4220
- https://www.cve.org/CVERecord?id=CVE-2013-4220
| Link | Providers | Tags |
|---|---|---|
| http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=9955ac47f4ba1c95ecb6092aeaefb40a22e99268 | x_refsource_CONFIRM | |
| http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.9.5 | x_refsource_CONFIRM | |
| http://www.openwall.com/lists/oss-security/2013/08/08/12 | mailing-listx_refsource_MLISTPatch | |
| https://access.redhat.com/security/cve/CVE-2013-4220 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=996380 | x_refsource_CONFIRMIssue Tracking | |
| https://github.com/torvalds/linux/commit/9955ac47f4ba1c95ecb6092aeaefb40a22e99268 | x_refsource_CONFIRMExploitPatch | |
| https://nvd.nist.gov/vuln/detail/CVE-2013-4220 | ||
| https://www.cve.org/CVERecord?id=CVE-2013-4220 |
Change history (0)
No recorded changes yet.