CVE-2019-11599
The coredump implementation in the Linux kernel before 5.0.10 does not use locking or other mechanisms to prevent vma layout or vma flags changes while it runs, which allows local users to obtain sensitive information, cause a denial of service, or…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.99%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The coredump implementation in the Linux kernel before 5.0.10 does not use locking or other mechanisms to prevent vma layout or vma flags changes while it runs, which allows local users to obtain sensitive information, cause a denial of service, or possibly have unspecified other impact by triggering a race condition with mmget_not_zero or get_task_mm calls. This is related to fs/userfaultfd.c, mm/mmap.c, fs/proc/task_mmu.c, and drivers/infiniband/core/uverbs_main.c.
- 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
- 0.99% probability · 61th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-667
- Affected
- linux/linux kernel
- Source
- cve@mitre.org
References
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00014.htmlThird Party Advisory, VDB Entry
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00025.htmlThird Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/152663/Linux-Missing-Lockdown.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/153702/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.htmlThird Party Advisory, VDB Entry
- http://www.openwall.com/lists/oss-security/2019/04/29/1Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/04/29/2Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/04/30/1Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/108113Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2019:2029Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2019:2043Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2019:3309Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2019:3517Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2020:0100Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2020:0103Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2020:0179Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2020:0543Third Party Advisory, VDB Entry
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1790Exploit, Mailing List, Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.114Mailing List, Vendor Advisory
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.37Mailing List, Vendor Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.10Mailing List, Vendor Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=04f5866e41fb70690e28397487d8bd8eea7d712aMailing List, Patch, Vendor Advisory
- https://github.com/torvalds/linux/commit/04f5866e41fb70690e28397487d8bd8eea7d712aPatch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/05/msg00041.htmlExploit
- https://lists.debian.org/debian-lts-announce/2019/05/msg00042.htmlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/06/msg00011.htmlBroken Link
- https://seclists.org/bugtraq/2019/Jul/33Mailing List, Third Party Advisory
- https://seclists.org/bugtraq/2019/Jun/26Mailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20190517-0002/Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200608-0001/Third Party Advisory, VDB Entry
- https://support.f5.com/csp/article/K51674118Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.