CVE-2019-11811

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.

Published: 2019-05-07 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-11811 is rated Low Risk (36.8/100): CVSS High severity, with low exploitation likelihood (EPSS 0.08%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2019-11811

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-09-02 0.05% 0.08% +0.03%
2 2025-03-30 0.23% 0.05% -0.18%
3 2025-03-29 — 0.23% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-11811

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.0 3.1 HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.0 5.9 [email protected]
6.9 2.0 MEDIUM
AV:L/AC:M/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 3.4 10.0 [email protected]

Weakness enumeration for CVE-2019-11811

OS Trackers for CVE-2019-11811

vendor priority summary link
debian not yet assigned CVE-2019-11811 not yet assigned priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2019-11811
redhat medium — https://access.redhat.com/security/cve/CVE-2019-11811
suse low CVE-2019-11811 severity low: SUSE including 149 source package names (bpftool-3.10.0-957.27.2.el7, bpftool-4.18.0-80.7.1.el8_0, …), 471 product×package rows across 70 product lines (HPE Helion OpenStack 8, SLES for SAP Applications 11 SP3, … (70 product lines)): Fixed 237, Known Not Affected 234. https://www.suse.com/security/cve/CVE-2019-11811/
ubuntu low CVE-2019-11811 low priority: Ubuntu including 29 source packages (linux, linux-aws, …), 172 status rows across 6 suites (bionic, cosmic, disco, trusty, upstream, xenial): DNE 93, not-affected 38, released 30, ignored 11. https://ubuntu.com/security/CVE-2019-11811

Affected software / configurations for CVE-2019-11811

Vendor Product Version Raw CPE
linux linux_kernel >= 4.18, < 4.19.31 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 4.20, < 5.0.4 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
opensuse leap 15.1 cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
redhat enterprise_linux 7.0 cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_aus 7.6 cpe:2.3:o:redhat:enterprise_linux_aus:7.6:*:*:*:*:*:*:*
redhat enterprise_linux_desktop 7.0 cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_server 7.0 cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_server_aus 7.4 cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*
redhat enterprise_linux_server_tus 7.4 cpe:2.3:o:redhat:enterprise_linux_server_tus:7.4:*:*:*:*:*:*:*
redhat enterprise_linux_server_tus 7.6 cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*
redhat enterprise_linux_workstation 7.0 cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*

References for CVE-2019-11811

URL Tags
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00071.html Third Party Advisory
http://www.securityfocus.com/bid/108410 Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2019:1873 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1891 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1959 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1971 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:4057 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:4058 Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0036 Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.4 Release Notes Vendor Advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=401e7e88d4ef80188ffa07095ac00456f901b8c4 Patch Vendor Advisory
https://github.com/torvalds/linux/commit/401e7e88d4ef80188ffa07095ac00456f901b8c4 Patch Third Party Advisory
https://security.netapp.com/advisory/ntap-20190719-0003/ Third Party Advisory
https://support.f5.com/csp/article/K01512680 Third Party Advisory
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