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CVE-2019-12817

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Date: June 25, 2019

arch/powerpc/mm/mmu_context_book3s64.c in the Linux kernel before 5.1.15 for powerpc has a bug where unrelated processes may be able to read/write to one another's virtual memory under certain conditions via an mmap above 512 TB. Only a subset of powerpc systems are affected.

Language: C

Severity Score

Related Resources (21)

http://www.securityfocus.com/bid/108884
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00025.html
https://seclists.org/bugtraq/2019/Aug/13
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WSKLL2374YGFQR6LSVCFGTTCRGBTLAWZ/
https://support.f5.com/csp/article/K12876166
https://support.f5.com/csp/article/K12876166?utm_source=f5support&utm_medium=RSS
https://www.debian.org/security/2019/dsa-4495
http://www.openwall.com/lists/oss-security/2019/06/24/5
https://usn.ubuntu.com/4031-1/
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.15
https://support.f5.com/csp/article/K12876166?utm_source=f5support&%3Butm_medium=RSS
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ca72d88378b2f2444d3ec145dd442d449d3fefbc
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OTLN3KQYEEWWAJYA4BUYYDMWWXCJQNV2/
https://access.redhat.com/errata/RHSA-2019:2703
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WSKLL2374YGFQR6LSVCFGTTCRGBTLAWZ/
https://access.redhat.com/security/cve/CVE-2019-12817
https://security-tracker.debian.org/tracker/CVE-2019-12817
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OTLN3KQYEEWWAJYA4BUYYDMWWXCJQNV2/
https://nvd.nist.gov/vuln/detail/CVE-2019-12817
https://people.canonical.com/~ubuntu-security/cve/CVE-2019-12817
https://www.mend.io/vulnerability-database/CVE-2019-12817

Severity Score

Weakness Type (CWE)

Buffer Errors

CWE-119

Out-of-bounds Write

CWE-787

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): HIGH
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): COMPLETE
Integrity (I): COMPLETE
Availability (A): COMPLETE
Additional information:

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