CVE-2019-11811: Use After Free
First published: Tue May 07 2019(Updated: )
An issue was discovered in the Linux kernel before 5.0.4. There is a use-after-free upon attempted read access to /proc/ioports after the ipmi_si module is removed, related to drivers/char/ipmi/ipmi_si_intf.c, drivers/char/ipmi/ipmi_si_mem_io.c, and drivers/char/ipmi/ipmi_si_port_io.c.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | >=4.18<4.19.31 | |
| Linux Linux kernel | >=4.20<5.0.4 | |
| openSUSE Leap | =15.1 | |
| Redhat Enterprise Linux | =7.0 | |
| Redhat Enterprise Linux Aus | =7.6 | |
| Redhat Enterprise Linux Desktop | =7.0 | |
| Redhat Enterprise Linux Server | =7.0 | |
| Redhat Enterprise Linux Server Aus | =7.4 | |
| Redhat Enterprise Linux Server Tus | =7.4 | |
| Redhat Enterprise Linux Server Tus | =7.6 | |
| Redhat Enterprise Linux Workstation | =7.0 | |
| 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 | <0:3.10.0-693.61.1.el7 | 0:3.10.0-693.61.1.el7 |
| redhat/kernel | <0:3.10.0-862.46.1.el7 | 0:3.10.0-862.46.1.el7 |
| redhat/kernel-rt | <0:4.18.0-80.7.1.rt9.153.el8_0 | 0:4.18.0-80.7.1.rt9.153.el8_0 |
| redhat/kernel | <0:4.18.0-80.7.1.el8_0 | 0:4.18.0-80.7.1.el8_0 |
| redhat/kernel-rt | <1:3.10.0-693.61.1.rt56.656.el6 | 1:3.10.0-693.61.1.rt56.656.el6 |
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Reference Links
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00071.html
- http://www.securityfocus.com/bid/108410
- https://access.redhat.com/errata/RHSA-2019:1873
- https://access.redhat.com/errata/RHSA-2019:1891
- https://access.redhat.com/errata/RHSA-2019:1959
- https://access.redhat.com/errata/RHSA-2019:1971
- https://access.redhat.com/errata/RHSA-2019:4057
- https://access.redhat.com/errata/RHSA-2019:4058
- https://access.redhat.com/errata/RHSA-2020:0036
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.4
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=401e7e88d4ef80188ffa07095ac00456f901b8c4
- https://github.com/torvalds/linux/commit/401e7e88d4ef80188ffa07095ac00456f901b8c4
- https://security.netapp.com/advisory/ntap-20190719-0003/
- https://support.f5.com/csp/article/K01512680
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1709181
- https://access.redhat.com/solutions/41278
- https://access.redhat.com/security/cve/cve-2019-11811
- https://access.redhat.com/errata/RHSA-2020:2854
- https://bugzilla.redhat.com/show_bug.cgi?id=1709180
- https://www.cve.org/CVERecord?id=CVE-2019-11811 https://nvd.nist.gov/vuln/detail/CVE-2019-11811
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is CVE-2019-11811?
CVE-2019-11811 is a vulnerability in the Linux kernel that allows a use-after-free attack when attempting to read /proc/ioports after the ipmi_si module is removed.
What is the severity of CVE-2019-11811?
CVE-2019-11811 has a severity level of high.
Which software versions are affected by CVE-2019-11811?
The affected software versions include kernel-rt 3.10.0-957.27.2.rt56.940.el7, kernel 3.10.0-957.27.2.el7, kernel-alt 4.14.0-115.26.1.el7a, and more.
How can I fix CVE-2019-11811?
To fix CVE-2019-11811, users should update their Linux kernel to a version that includes the necessary patch.
Where can I find more information about CVE-2019-11811?
More information about CVE-2019-11811 can be found on the CVE and NVD websites, as well as Red Hat's Bugzilla and Errata pages.
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