CVE-2017-5669
HighThe do_shmat function in ipc/shm.c in the Linux kernel through 4.9.12 does not restrict the address calculated by a certain rounding operation, which allows local users to map page zero, and consequently bypass a protection mechanism that exists for the mmap system call, by making crafted shmget and shmat system calls in a privileged context.
CVSS 3.1 score
7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
The following references provide additional information about CVE-2017-5669 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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Debian Securityhttp://www.debian.org/security/2017/dsa-3804Third Party Advisory
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Securityfocushttp://www.securityfocus.com/bid/96754Third Party Advisory VDB Entry
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Securitytrackerhttp://www.securitytracker.com/id/1037918Third Party Advisory VDB Entry
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Ubuntu Securityhttps://usn.ubuntu.com/3583-1/Third Party Advisory
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Ubuntu Securityhttps://usn.ubuntu.com/3583-2/Third Party Advisory
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PatchKernel patch commithttps://bugzilla.kernel.org/show_bug.cgi?id=192931
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PatchKernel patch commithttps://github.com/torvalds/linux/commit/95e91b831f87ac8e1f8ed50c14d709089b4e01b8
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PatchKernel patch commithttps://github.com/torvalds/linux/commit/e1d35d4dc7f089e6c9c080d556feedf9c706f0c7
Frequently asked questions
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What is CVE-2017-5669?
CVE-2017-5669 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . CVE-2017-5669 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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What is the CVSS score for CVE-2017-5669?
CVE-2017-5669 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. -
Is there a patch available for CVE-2017-5669?
No patch is currently available for CVE-2017-5669. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
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Is CVE-2017-5669 actively exploited?
No — CVE-2017-5669 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.