CVE-2019-12817
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.39%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.0 HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.39% probability · 32th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- canonical/ubuntu linux · linux/linux kernel · fedoraproject/fedora · debian/debian linux · opensuse/leap · redhat/enterprise linux · redhat/enterprise linux eus · redhat/enterprise linux server aus · redhat/enterprise linux server tus
- Source
- cve@mitre.org
References
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00025.htmlMailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/06/24/5Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/108884Broken Link
- https://access.redhat.com/errata/RHSA-2019:2703Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.15Vendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ca72d88378b2f2444d3ec145dd442d449d3fefbcPatch, Vendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OTLN3KQYEEWWAJYA4BUYYDMWWXCJQNV2/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WSKLL2374YGFQR6LSVCFGTTCRGBTLAWZ/
- https://seclists.org/bugtraq/2019/Aug/13Mailing List, Third Party Advisory
- https://support.f5.com/csp/article/K12876166Third Party Advisory
- https://support.f5.com/csp/article/K12876166?utm_source=f5support&%3Butm_medium=RSS
- https://usn.ubuntu.com/4031-1/Third Party Advisory
- https://www.debian.org/security/2019/dsa-4495Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00025.htmlMailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/06/24/5Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/108884Broken Link
- https://access.redhat.com/errata/RHSA-2019:2703Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.15Vendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ca72d88378b2f2444d3ec145dd442d449d3fefbcPatch, Vendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OTLN3KQYEEWWAJYA4BUYYDMWWXCJQNV2/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WSKLL2374YGFQR6LSVCFGTTCRGBTLAWZ/
- https://seclists.org/bugtraq/2019/Aug/13Mailing List, Third Party Advisory
- https://support.f5.com/csp/article/K12876166Third Party Advisory
- https://support.f5.com/csp/article/K12876166?utm_source=f5support&%3Butm_medium=RSS
- https://usn.ubuntu.com/4031-1/Third Party Advisory
- https://www.debian.org/security/2019/dsa-4495Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.