Vulnerability Details : CVE-2013-4220
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).
Vulnerability category: Denial of service
Exploit prediction scoring system (EPSS) score for CVE-2013-4220
Probability of exploitation activity in the next 30 days: 0.04%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 6 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2013-4220
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
4.9
|
MEDIUM | AV:L/AC:L/Au:N/C:N/I:N/A:C |
3.9
|
6.9
|
NIST |
References for CVE-2013-4220
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https://github.com/torvalds/linux/commit/9955ac47f4ba1c95ecb6092aeaefb40a22e99268
arm64: don't kill the kernel on a bad esr from el0 · torvalds/linux@9955ac4 · GitHubExploit;Patch
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http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=9955ac47f4ba1c95ecb6092aeaefb40a22e99268
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https://bugzilla.redhat.com/show_bug.cgi?id=996380
996380 – (CVE-2013-4220) CVE-2013-4220 Kernel: arm64: unhandled esr by el0_sync_compat
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http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.9.5
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http://www.openwall.com/lists/oss-security/2013/08/08/12
oss-security - Re: CVE Request: Linux kernel: arm64: unhandled el0 trapsPatch
Products affected by CVE-2013-4220
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:arm64:*
- cpe:2.3:o:linux:linux_kernel:3.9.0:*:*:*:*:*:arm64:*
- cpe:2.3:o:linux:linux_kernel:3.9.1:*:*:*:*:*:arm64:*
- cpe:2.3:o:linux:linux_kernel:3.9.2:*:*:*:*:*:arm64:*
- cpe:2.3:o:linux:linux_kernel:3.9.3:*:*:*:*:*:arm64:*