What’s Vulnerable › Vulnerabilities

CVE-2013-4220

• Severity: medium (CVSS 4.9 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2013-08-25 · updated 2026-06-16

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

• Linux kernel: through 3.9.4; 3.9.0, 3.9.1, 3.9.2, 3.9.3

References

• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=9955ac47f4ba1c95ecb6092aeaefb40a22e99268
• http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.9.5
• http://www.openwall.com/lists/oss-security/2013/08/08/12
• https://bugzilla.redhat.com/show_bug.cgi?id=996380
• https://github.com/torvalds/linux/commit/9955ac47f4ba1c95ecb6092aeaefb40a22e99268
• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=9955ac47f4ba1c95ecb6092aeaefb40a22e99268
• http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.9.5
• http://www.openwall.com/lists/oss-security/2013/08/08/12
• https://bugzilla.redhat.com/show_bug.cgi?id=996380
• https://github.com/torvalds/linux/commit/9955ac47f4ba1c95ecb6092aeaefb40a22e99268

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