CVE-2016-2143
The fork implementation in the Linux kernel before 4.5 on s390 platforms mishandles the case of four page-table levels, which allows local users to cause a denial of service (system crash) or possibly have unspecified other impact via a crafted…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.56%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The fork implementation in the Linux kernel before 4.5 on s390 platforms mishandles the case of four page-table levels, which allows local users to cause a denial of service (system crash) or possibly have unspecified other impact via a crafted application, related to arch/s390/include/asm/mmu_context.h and arch/s390/include/asm/pgalloc.h.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 0.56% probability · 45th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- linux/linux kernel · debian/debian linux · redhat/enterprise linux · oracle/linux
- Source
- secalert@redhat.com
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3446c13b268af86391d06611327006b059b8bab1Patch, Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00019.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00052.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00059.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-1539.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-2766.htmlThird Party Advisory
- http://www.debian.org/security/2016/dsa-3607Third Party Advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.htmlThird Party Advisory
- https://github.com/torvalds/linux/commit/3446c13b268af86391d06611327006b059b8bab1Patch
- https://security-tracker.debian.org/tracker/CVE-2016-2143Third Party Advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3446c13b268af86391d06611327006b059b8bab1Patch, Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00019.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00052.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00059.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-1539.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-2766.htmlThird Party Advisory
- http://www.debian.org/security/2016/dsa-3607Third Party Advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.htmlThird Party Advisory
- https://github.com/torvalds/linux/commit/3446c13b268af86391d06611327006b059b8bab1Patch
- https://security-tracker.debian.org/tracker/CVE-2016-2143Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.