What’s Vulnerable › Vulnerabilities

CVE-2019-11811

• Severity: high (CVSS 7.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-05-07 · updated 2026-06-17
• Weakness: CWE-416

Description

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.

Affected products

• Linux kernel: from 4.18 before 4.19.31; from 4.20 before 5.0.4 — fixed in 4.19.31, 5.0.4
• openSUSE Leap: 15.1
• Red Hat 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, 7.6
• RedHat Enterprise Linux Workstation: 7.0

How to fix

Upgrade to a fixed version: Linux kernel 4.19.31, 5.0.4. Check the vendor advisory for mitigations.

References

• 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

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