Is CVE-2021-47466 in the CISA KEV catalog?

No. CVE-2021-47466 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-47466?

CVE-2021-47466 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2021-47466?

CVE-2021-47466 has an EPSS score of 0.21% (11th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-47466?

Upgrade linux on debian 11 to 5.10.84-1 or later. Fixes are available for 99 affected products.

CVE & CISA-KEV Catalog

CVE-2021-47466

MEDIUM

5.5

CVSS v3

NVD

Description

In the Linux kernel, the following vulnerability has been resolved: mm, slub: fix potential memoryleak in kmem_cache_open() In error path, the random_seq of slub cache might be leaked. Fix this by using __kmem_cache_release() to release all the relevant resources.

CWE-401Missing Release of Memory (Memory Leak)

How to fix

Remediation Available

linuxDebian

Fixed in:5.10.84-1CVE-2021-47466

Fixed in:5.14.16-1CVE-2021-47466

bpftoolRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

bpftoolRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

bpftool-debuginfoRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

bpftool-debuginfoRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernelRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernelRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-abi-stablelistsRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-abi-stablelistsRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-coreRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-coreRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-debugRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-debugRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-debug-coreRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-debug-coreRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-debug-debuginfoRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-debug-debuginfoRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-debug-develRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-debug-develRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-debug-modulesRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-debug-modulesRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-debug-modules-extraRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-debug-modules-extraRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-debuginfoRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-debuginfoRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-debuginfo-common-aarch64Rocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-debuginfo-common-aarch64Red Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-debuginfo-common-ppc64leRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-debuginfo-common-ppc64leRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-debuginfo-common-s390xRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-debuginfo-common-s390xRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-debuginfo-common-x86_64Red Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-debuginfo-common-x86_64Rocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-develRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-develRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-docRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-docRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-modulesRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-modulesRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-modules-extraRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-modules-extraRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-rtRocky

Fixed in:0:4.18.0-553.22.1.rt7.363.el8_10RHSA-2024:7001

kernel-rtRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.rt7.363.el8_10RHSA-2024:7001

kernel-rt-coreRocky

Fixed in:0:4.18.0-553.22.1.rt7.363.el8_10RHSA-2024:7001

kernel-rt-coreRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.rt7.363.el8_10RHSA-2024:7001

kernel-rt-debugRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.rt7.363.el8_10RHSA-2024:7001

kernel-rt-debugRocky

Fixed in:0:4.18.0-553.22.1.rt7.363.el8_10RHSA-2024:7001

kernel-rt-debug-coreRocky

Fixed in:0:4.18.0-553.22.1.rt7.363.el8_10RHSA-2024:7001

kernel-rt-debug-coreRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.rt7.363.el8_10RHSA-2024:7001

kernel-rt-debug-debuginfoRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.rt7.363.el8_10RHSA-2024:7001

kernel-rt-debug-debuginfoRocky

Fixed in:0:4.18.0-553.22.1.rt7.363.el8_10RHSA-2024:7001

kernel-rt-debug-develRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.rt7.363.el8_10RHSA-2024:7001

kernel-rt-debug-develRocky

Fixed in:0:4.18.0-553.22.1.rt7.363.el8_10RHSA-2024:7001

kernel-rt-debug-kvmRocky

Fixed in:0:4.18.0-553.22.1.rt7.363.el8_10RHSA-2024:7001

kernel-rt-debug-kvmRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.rt7.363.el8_10RHSA-2024:7001

kernel-rt-debug-modulesRocky

Fixed in:0:4.18.0-553.22.1.rt7.363.el8_10RHSA-2024:7001

kernel-rt-debug-modulesRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.rt7.363.el8_10RHSA-2024:7001

kernel-rt-debug-modules-extraRocky

Fixed in:0:4.18.0-553.22.1.rt7.363.el8_10RHSA-2024:7001

kernel-rt-debug-modules-extraRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.rt7.363.el8_10RHSA-2024:7001

kernel-rt-debuginfoRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.rt7.363.el8_10RHSA-2024:7001

kernel-rt-debuginfoRocky

Fixed in:0:4.18.0-553.22.1.rt7.363.el8_10RHSA-2024:7001

kernel-rt-debuginfo-common-x86_64Rocky

Fixed in:0:4.18.0-553.22.1.rt7.363.el8_10RHSA-2024:7001

kernel-rt-debuginfo-common-x86_64Red Hat / RHEL

Fixed in:0:4.18.0-553.22.1.rt7.363.el8_10RHSA-2024:7001

kernel-rt-develRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.rt7.363.el8_10RHSA-2024:7001

kernel-rt-develRocky

Fixed in:0:4.18.0-553.22.1.rt7.363.el8_10RHSA-2024:7001

kernel-rt-kvmRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.rt7.363.el8_10RHSA-2024:7001

kernel-rt-kvmRocky

Fixed in:0:4.18.0-553.22.1.rt7.363.el8_10RHSA-2024:7001

kernel-rt-modulesRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.rt7.363.el8_10RHSA-2024:7001

kernel-rt-modulesRocky

Fixed in:0:4.18.0-553.22.1.rt7.363.el8_10RHSA-2024:7001

kernel-rt-modules-extraRocky

Fixed in:0:4.18.0-553.22.1.rt7.363.el8_10RHSA-2024:7001

kernel-rt-modules-extraRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.rt7.363.el8_10RHSA-2024:7001

kernel-toolsRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-toolsRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-tools-debuginfoRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-tools-debuginfoRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-tools-libsRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-tools-libsRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-tools-libs-develRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-tools-libs-develRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-zfcpdumpRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-zfcpdumpRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-zfcpdump-coreRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-zfcpdump-coreRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-zfcpdump-debuginfoRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-zfcpdump-debuginfoRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-zfcpdump-develRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-zfcpdump-develRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-zfcpdump-modulesRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-zfcpdump-modulesRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-zfcpdump-modules-extraRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

kernel-zfcpdump-modules-extraRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

perfRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

perfRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

perf-debuginfoRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

perf-debuginfoRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

python3-perfRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

python3-perfRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

python3-perf-debuginfoRed Hat / RHEL

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

python3-perf-debuginfoRocky

Fixed in:0:4.18.0-553.22.1.el8_10RHSA-2024:7000

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

Exploit Intelligence

0.21%probability of exploitation in 30 days

11thpercentile

Low risk: more likely to be exploited than 11% of all known CVEs.

References

Patch4

Related Vulnerabilities

Other CWE-401 (Missing Release of Memory (Memory Leak)) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-13934	High	7.5	64%	-	Fix
CVE-2016-6304	High	7.5	63%	-	Fix
CVE-2019-12265	Medium	5.3	55%	-	Fix
CVE-2001-0136	Medium	5.0	45%	-	-
CVE-2016-4232	High	7.5	36%	-	-
CVE-2001-0543	Medium	5.0	21%	-	-

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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 2025-01-07.