CVE-2018-16884: Use After Free
First published: Tue Nov 27 2018(Updated: )
A flaw was found in the Linux kernel in the NFS41+ subsystem. NFS41+ shares mounted in different network namespaces at the same time can make bc_svc_process() use wrong back-channel id and cause a use-after-free. Thus a malicious container user can cause a host kernel memory corruption and a system panic. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although we believe it is unlikely. References: <a href="https://seclists.org/oss-sec/2018/q4/267">https://seclists.org/oss-sec/2018/q4/267</a> A proposed patchset: <a href="https://patchwork.kernel.org/cover/10733767/">https://patchwork.kernel.org/cover/10733767/</a> <a href="https://patchwork.kernel.org/patch/10733769/">https://patchwork.kernel.org/patch/10733769/</a>
Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | >=3.7<3.16.65 | |
| Linux Linux kernel | >=3.17<3.18.133 | |
| Linux Linux kernel | >=3.19<4.4.171 | |
| Linux Linux kernel | >=4.5<4.9.151 | |
| Linux Linux kernel | >=4.10<4.14.94 | |
| Linux Linux kernel | >=4.15<4.19.16 | |
| Linux Linux kernel | >=4.20<4.20.3 | |
| Redhat Enterprise Linux | =7.0 | |
| Redhat Enterprise Mrg | =2.0 | |
| Debian Debian Linux | =8.0 | |
| Canonical Ubuntu Linux | =14.04 | |
| Canonical Ubuntu Linux | =16.04 | |
| redhat/kernel-rt | <0:3.10.0-957.27.2.rt56.940.el7 | 0:3.10.0-957.27.2.rt56.940.el7 |
| redhat/kernel | <0:3.10.0-957.27.2.el7 | 0:3.10.0-957.27.2.el7 |
| redhat/kernel-alt | <0:4.14.0-115.26.1.el7a | 0:4.14.0-115.26.1.el7a |
| redhat/kernel | <0:3.10.0-693.58.1.el7 | 0:3.10.0-693.58.1.el7 |
| redhat/kernel-rt | <0:4.18.0-147.rt24.93.el8 | 0:4.18.0-147.rt24.93.el8 |
| redhat/kernel | <0:4.18.0-147.el8 | 0:4.18.0-147.el8 |
| redhat/kernel | <0:4.18.0-80.15.1.el8_0 | 0:4.18.0-80.15.1.el8_0 |
| redhat/kernel-rt | <1:3.10.0-693.58.1.rt56.652.el6 | 1:3.10.0-693.58.1.rt56.652.el6 |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.119-1 6.11.10-1 6.12.5-1 |
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Reference Links
- http://www.securityfocus.com/bid/106253
- https://access.redhat.com/errata/RHSA-2019:1873
- https://access.redhat.com/errata/RHSA-2019:1891
- https://access.redhat.com/errata/RHSA-2019:2696
- https://access.redhat.com/errata/RHSA-2019:2730
- https://access.redhat.com/errata/RHSA-2019:3309
- https://access.redhat.com/errata/RHSA-2019:3517
- https://access.redhat.com/errata/RHSA-2020:0204
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16884
- https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html
- https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html
- https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html
- https://patchwork.kernel.org/cover/10733767/
- https://patchwork.kernel.org/patch/10733769/
- https://support.f5.com/csp/article/K21430012
- https://usn.ubuntu.com/3932-1/
- https://usn.ubuntu.com/3932-2/
- https://usn.ubuntu.com/3980-1/
- https://usn.ubuntu.com/3980-2/
- https://usn.ubuntu.com/3981-1/
- https://usn.ubuntu.com/3981-2/
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://www.cve.org/CVERecord?id=CVE-2018-16884 https://nvd.nist.gov/vuln/detail/CVE-2018-16884
- https://bugzilla.redhat.com/show_bug.cgi?id=1660375
- https://access.redhat.com/errata/RHSA-2020:2854
- https://access.redhat.com/security/cve/cve-2018-16884
- https://launchpad.net/bugs/cve/CVE-2018-16884
- https://seclists.org/oss-sec/2018/q4/267
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1660825
- https://security-tracker.debian.org/tracker/CVE-2018-16884
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16884
- https://nvd.nist.gov/vuln/detail/CVE-2018-16884
- https://ubuntu.com/security/CVE-2018-16884
Parent vulnerabilities
(Appears in the following advisories)
- collector/nvd-api
- collector/redhat-cve
- collector/nvd-index
- agent/type
- agent/first-publish-date
- collector/launchpad-cve
- source/Launchpad
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2018-16884
- agent/severity
- agent/author
- agent/weakness
- collector/mitre-cve
- source/MITRE
- agent/remedy
- agent/references
- agent/tags
- collector/usn-cve
- source/Ubuntu
- agent/description
- agent/event
- collector/nvd-cve
- source/NVD
- agent/software-canonical-lookup
- agent/last-modified-date
- collector/security-tracker-debian
- source/Debian
- agent/softwarecombine
- agent/trending
- vendor/linux
- canonical/linux linux kernel
- version/linux linux kernel/3.7
- version/linux linux kernel/3.17
- version/linux linux kernel/3.19
- version/linux linux kernel/4.5
- version/linux linux kernel/4.10
- version/linux linux kernel/4.15
- version/linux linux kernel/4.20
- vendor/redhat
- canonical/redhat enterprise linux
- version/redhat enterprise linux/7.0
- canonical/redhat enterprise mrg
- version/redhat enterprise mrg/2.0
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/8.0
- vendor/canonical
- canonical/canonical ubuntu linux
- version/canonical ubuntu linux/14.04
- version/canonical ubuntu linux/16.04
- package-manager/redhat
- package-manager/debian