CVE-2026-46189

MEDIUM

5.5

CVSS v3

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path Sashiko points out that pvrdma_uar_free() is already called within pvrdma_dealloc_ucontext(), so calling it before triggers a double free.

CWE-415 CWE-763

How to fix

Remediation Available

linuxDebian

Fixed in:6.1.176-1CVE-2026-46189

Fixed in:6.12.88-1CVE-2026-46189

Fixed in:7.0.7-1CVE-2026-46189

bpftoolRed Hat / RHEL

Fixed in:0:4.18.0-477.152.1.el8_8RHSA-2026:40760

Fixed in:0:4.18.0-553.139.1.el8_10RHSA-2026:33743

Fixed in:0:4.18.0-372.201.1.el8_6RHSA-2026:40068

Fixed in:0:4.18.0-553.139.1.el8_10RHSA-2026:33743

Fixed in:0:4.18.0-305.199.1.el8_4RHSA-2026:47633

Fixed in:0:4.18.0-477.152.1.el8_8RHSA-2026:40760

bpftoolRocky

Fixed in:0:4.18.0-553.139.1.el8_10RHSA-2026:33743

Fixed in:0:4.18.0-372.201.1.el8_6RHSA-2026:40068

Fixed in:0:4.18.0-553.139.1.el8_10RHSA-2026:33743

Fixed in:0:4.18.0-477.152.1.el8_8RHSA-2026:40760

Fixed in:0:4.18.0-305.199.1.el8_4RHSA-2026:47633

Fixed in:0:4.18.0-477.152.1.el8_8RHSA-2026:40760

Fixed in:0:4.18.0-553.139.1.el8_10RHSA-2026:33743

bpftool-debuginfoRocky

Fixed in:0:4.18.0-553.139.1.el8_10RHSA-2026:33743

Fixed in:0:4.18.0-305.199.1.el8_4RHSA-2026:47633

Fixed in:0:4.18.0-477.152.1.el8_8RHSA-2026:40760

Fixed in:0:4.18.0-553.139.1.el8_10RHSA-2026:33743

Fixed in:0:4.18.0-477.152.1.el8_8RHSA-2026:40760

Fixed in:0:4.18.0-372.201.1.el8_6RHSA-2026:40068

bpftool-debuginfoRed Hat / RHEL

Fixed in:0:4.18.0-553.139.1.el8_10RHSA-2026:33743

Fixed in:0:4.18.0-305.199.1.el8_4RHSA-2026:47633

Fixed in:0:4.18.0-553.139.1.el8_10RHSA-2026:33743

Fixed in:0:4.18.0-477.152.1.el8_8RHSA-2026:40760

Fixed in:0:4.18.0-553.139.1.el8_10RHSA-2026:33743

Fixed in:0:4.18.0-477.152.1.el8_8RHSA-2026:40760

Fixed in:0:4.18.0-372.201.1.el8_6RHSA-2026:40068

kernelRed Hat / RHEL

Fixed in:0:6.12.0-211.29.1.el10_2RHSA-2026:33685

Fixed in:0:4.18.0-477.152.1.el8_8RHSA-2026:40760

Fixed in:0:4.18.0-305.199.1.el8_4RHSA-2026:47633

Fixed in:0:4.18.0-553.139.1.el8_10RHSA-2026:33743

kernelRocky

Fixed in:0:6.12.0-211.29.1.el10_2RHSA-2026:33685

Fixed in:0:4.18.0-477.152.1.el8_8RHSA-2026:40760

Fixed in:0:4.18.0-553.139.1.el8_10RHSA-2026:33743

kernel-64kRocky

Fixed in:0:6.12.0-211.29.1.el10_2RHSA-2026:33685

Fixed in:0:5.14.0-687.19.1.el9_8RHSA-2026:30848

Fixed in:0:5.14.0-570.127.1.el9_6RHSA-2026:38902

Fixed in:0:5.14.0-284.179.1.el9_2RHSA-2026:36073

Fixed in:0:5.14.0-427.136.1.el9_4RHSA-2026:36767

kernel-64kRed Hat / RHEL

Fixed in:0:6.12.0-211.29.1.el10_2RHSA-2026:33685

Fixed in:0:5.14.0-284.179.1.el9_2RHSA-2026:36073

Fixed in:0:5.14.0-687.19.1.el9_8RHSA-2026:30848

Fixed in:0:5.14.0-427.136.1.el9_4RHSA-2026:36767

Fixed in:0:5.14.0-570.127.1.el9_6RHSA-2026:38902

kernel-64k-coreRocky

Fixed in:0:6.12.0-211.29.1.el10_2RHSA-2026:33685

Fixed in:0:5.14.0-687.19.1.el9_8RHSA-2026:30848

Fixed in:0:5.14.0-427.136.1.el9_4RHSA-2026:36767

Fixed in:0:5.14.0-570.127.1.el9_6RHSA-2026:38902

Fixed in:0:5.14.0-284.179.1.el9_2RHSA-2026:36073

kernel-64k-coreRed Hat / RHEL

Fixed in:0:6.12.0-211.29.1.el10_2RHSA-2026:33685

Fixed in:0:5.14.0-687.19.1.el9_8RHSA-2026:30848

Fixed in:0:5.14.0-427.136.1.el9_4RHSA-2026:36767

Fixed in:0:5.14.0-570.127.1.el9_6RHSA-2026:38902

Fixed in:0:5.14.0-284.179.1.el9_2RHSA-2026:36073

kernel-64k-debugRocky

Fixed in:0:6.12.0-211.29.1.el10_2RHSA-2026:33685

Fixed in:0:5.14.0-570.127.1.el9_6RHSA-2026:38902

Fixed in:0:5.14.0-284.179.1.el9_2RHSA-2026:36073

Fixed in:0:5.14.0-427.136.1.el9_4RHSA-2026:36767

Fixed in:0:5.14.0-687.19.1.el9_8RHSA-2026:30848

kernel-64k-debugRed Hat / RHEL

Fixed in:0:6.12.0-211.29.1.el10_2RHSA-2026:33685

Fixed in:0:5.14.0-687.19.1.el9_8RHSA-2026:30848

Fixed in:0:5.14.0-427.136.1.el9_4RHSA-2026:36767

Fixed in:0:5.14.0-570.127.1.el9_6RHSA-2026:38902

Fixed in:0:5.14.0-284.179.1.el9_2RHSA-2026:36073

kernel-64k-debug-coreRed Hat / RHEL

Fixed in:0:6.12.0-211.29.1.el10_2RHSA-2026:33685

Fixed in:0:5.14.0-570.127.1.el9_6RHSA-2026:38902

Fixed in:0:5.14.0-284.179.1.el9_2RHSA-2026:36073

Fixed in:0:5.14.0-427.136.1.el9_4RHSA-2026:36767

Fixed in:0:5.14.0-687.19.1.el9_8RHSA-2026:30848

kernel-64k-debug-coreRocky

Fixed in:0:6.12.0-211.29.1.el10_2RHSA-2026:33685

Fixed in:0:5.14.0-687.19.1.el9_8RHSA-2026:30848

Fixed in:0:5.14.0-570.127.1.el9_6RHSA-2026:38902

Fixed in:0:5.14.0-284.179.1.el9_2RHSA-2026:36073

Fixed in:0:5.14.0-427.136.1.el9_4RHSA-2026:36767

kernel-64k-debug-debuginfoRed Hat / RHEL

Fixed in:0:6.12.0-211.29.1.el10_2RHSA-2026:33685

Fixed in:0:5.14.0-284.179.1.el9_2RHSA-2026:36073

Fixed in:0:5.14.0-570.127.1.el9_6RHSA-2026:38902

Fixed in:0:5.14.0-427.136.1.el9_4RHSA-2026:36767

Fixed in:0:5.14.0-687.19.1.el9_8RHSA-2026:30848

kernel-64k-debug-debuginfoRocky

Fixed in:0:6.12.0-211.29.1.el10_2RHSA-2026:33685

Fixed in:0:5.14.0-427.136.1.el9_4RHSA-2026:36767

Fixed in:0:5.14.0-687.19.1.el9_8RHSA-2026:30848

Fixed in:0:5.14.0-570.127.1.el9_6RHSA-2026:38902

Fixed in:0:5.14.0-284.179.1.el9_2RHSA-2026:36073

kernel-64k-debug-develRocky

Fixed in:0:6.12.0-211.29.1.el10_2RHSA-2026:33685

Fixed in:0:5.14.0-284.179.1.el9_2RHSA-2026:36073

Fixed in:0:5.14.0-427.136.1.el9_4RHSA-2026:36767

Fixed in:0:5.14.0-570.127.1.el9_6RHSA-2026:38902

Fixed in:0:5.14.0-687.19.1.el9_8RHSA-2026:30848

kernel-64k-debug-develRed Hat / RHEL

Fixed in:0:6.12.0-211.29.1.el10_2RHSA-2026:33685

Fixed in:0:5.14.0-427.136.1.el9_4RHSA-2026:36767

Fixed in:0:5.14.0-570.127.1.el9_6RHSA-2026:38902

Fixed in:0:5.14.0-687.19.1.el9_8RHSA-2026:30848

Fixed in:0:5.14.0-284.179.1.el9_2RHSA-2026:36073

kernel-64k-debug-devel-matchedRocky

Fixed in:0:6.12.0-211.29.1.el10_2RHSA-2026:33685

Fixed in:0:5.14.0-284.179.1.el9_2RHSA-2026:36073

Fixed in:0:5.14.0-427.136.1.el9_4RHSA-2026:36767

Fixed in:0:5.14.0-687.19.1.el9_8RHSA-2026:30848

Fixed in:0:5.14.0-570.127.1.el9_6RHSA-2026:38902

kernel-64k-debug-devel-matchedRed Hat / RHEL

Fixed in:0:6.12.0-211.29.1.el10_2RHSA-2026:33685

Fixed in:0:5.14.0-570.127.1.el9_6RHSA-2026:38902

Fixed in:0:5.14.0-284.179.1.el9_2RHSA-2026:36073

Fixed in:0:5.14.0-427.136.1.el9_4RHSA-2026:36767

Fixed in:0:5.14.0-687.19.1.el9_8RHSA-2026:30848

kernel-64k-debug-modulesRed Hat / RHEL

Fixed in:0:6.12.0-211.29.1.el10_2RHSA-2026:33685

Fixed in:0:5.14.0-687.19.1.el9_8RHSA-2026:30848

Fixed in:0:5.14.0-570.127.1.el9_6RHSA-2026:38902

Fixed in:0:5.14.0-427.136.1.el9_4RHSA-2026:36767

Fixed in:0:5.14.0-284.179.1.el9_2RHSA-2026:36073

kernel-64k-debug-modulesRocky

Fixed in:0:6.12.0-211.29.1.el10_2RHSA-2026:33685

Fixed in:0:5.14.0-687.19.1.el9_8RHSA-2026:30848

Fixed in:0:5.14.0-570.127.1.el9_6RHSA-2026:38902

Fixed in:0:5.14.0-427.136.1.el9_4RHSA-2026:36767

Fixed in:0:5.14.0-284.179.1.el9_2RHSA-2026:36073

kernel-64k-debug-modules-coreRed Hat / RHEL

Fixed in:0:6.12.0-211.29.1.el10_2RHSA-2026:33685

Fixed in:0:5.14.0-687.19.1.el9_8RHSA-2026:30848

Fixed in:0:5.14.0-570.127.1.el9_6RHSA-2026:38902

Fixed in:0:5.14.0-427.136.1.el9_4RHSA-2026:36767

Fixed in:0:5.14.0-284.179.1.el9_2RHSA-2026:36073

kernel-64k-debug-modules-coreRocky

Fixed in:0:6.12.0-211.29.1.el10_2RHSA-2026:33685

Fixed in:0:5.14.0-284.179.1.el9_2RHSA-2026:36073

Fixed in:0:5.14.0-427.136.1.el9_4RHSA-2026:36767

Fixed in:0:5.14.0-570.127.1.el9_6RHSA-2026:38902

Fixed in:0:5.14.0-687.19.1.el9_8RHSA-2026:30848

kernel-64k-debug-modules-extraRocky

Fixed in:0:6.12.0-211.29.1.el10_2RHSA-2026:33685

Fixed in:0:5.14.0-427.136.1.el9_4RHSA-2026:36767

Fixed in:0:5.14.0-687.19.1.el9_8RHSA-2026:30848

Fixed in:0:5.14.0-284.179.1.el9_2RHSA-2026:36073

Fixed in:0:5.14.0-570.127.1.el9_6RHSA-2026:38902

kernel-64k-debug-modules-extraRed Hat / RHEL

Fixed in:0:6.12.0-211.29.1.el10_2RHSA-2026:33685

Fixed in:0:5.14.0-427.136.1.el9_4RHSA-2026:36767

Fixed in:0:5.14.0-284.179.1.el9_2RHSA-2026:36073

Fixed in:0:5.14.0-687.19.1.el9_8RHSA-2026:30848

Fixed in:0:5.14.0-570.127.1.el9_6RHSA-2026:38902

kernel-64k-debuginfoRocky

Fixed in:0:6.12.0-211.29.1.el10_2RHSA-2026:33685

Fixed in:0:5.14.0-570.127.1.el9_6RHSA-2026:38902

Fixed in:0:5.14.0-687.19.1.el9_8RHSA-2026:30848

Fixed in:0:5.14.0-284.179.1.el9_2RHSA-2026:36073

Fixed in:0:5.14.0-427.136.1.el9_4RHSA-2026:36767

kernel-64k-debuginfoRed Hat / RHEL

Fixed in:0:6.12.0-211.29.1.el10_2RHSA-2026:33685

Fixed in:0:5.14.0-284.179.1.el9_2RHSA-2026:36073

Fixed in:0:5.14.0-427.136.1.el9_4RHSA-2026:36767

Fixed in:0:5.14.0-687.19.1.el9_8RHSA-2026:30848

Fixed in:0:5.14.0-570.127.1.el9_6RHSA-2026:38902

kernel-64k-develRed Hat / RHEL

Fixed in:0:6.12.0-211.29.1.el10_2RHSA-2026:33685

Fixed in:0:5.14.0-687.19.1.el9_8RHSA-2026:30848

Fixed in:0:5.14.0-570.127.1.el9_6RHSA-2026:38902

Fixed in:0:5.14.0-284.179.1.el9_2RHSA-2026:36073

Fixed in:0:5.14.0-427.136.1.el9_4RHSA-2026:36767

This vulnerability affects an unusually large number of packages. The highest-confidence fixes are shown above; the full list is longer. Check the referenced advisories for complete coverage.

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U

Exploit Intelligence

0.14%probability of exploitation in 30 days

4thpercentile

Low risk: more likely to be exploited than 4% of all known CVEs.

References

Related Vulnerabilities

Other CWE-415 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-25136	Medium	6.5	90%	-	Fix
CVE-2003-0545	Critical	9.8	87%	-	Fix
CVE-2018-0101	Critical	10.0	87%	-	Fix
CVE-2026-33824	Critical	9.8	73%	KEV	Fix
CVE-2019-3829	Medium	5.3	59%	-	Fix
CVE-2021-3407	Medium	5.5	50%	-	Fix

Common questions

How do I fix CVE-2026-46189?

Published advisories record a fix for 456 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2026-46189 being actively exploited?

Not that we know of. CVE-2026-46189 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.14% is the estimated probability that it will be exploited in the next 30 days. That is higher than 4% of all scored CVEs.

How severe is CVE-2026-46189?

CVE-2026-46189 has a CVSS v3 base score of 5.5, rated moderate. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-46189 affect?

Published advisories record a fix for linux (Debian), bpftool (Red Hat / RHEL), bpftool (Rocky), bpftool-debuginfo (Rocky), and 452 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2026-46189

Markdown

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-09-09.