Is CVE-2021-47257 in the CISA KEV catalog?

No. CVE-2021-47257 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-47257?

CVE-2021-47257 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2021-47257?

CVE-2021-47257 has an EPSS score of 0.23% (13th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-47257?

Upgrade linux on debian 11 to 5.10.46-1 or later. Fixes are available for 99 affected products.

CVE & CISA-KEV Catalog

CVE-2021-47257

MEDIUM

5.5

CVSS v3

NVD

Description

In the Linux kernel, the following vulnerability has been resolved: net: ieee802154: fix null deref in parse dev addr Fix a logic error that could result in a null deref if the user sets the mode incorrectly for the given addr type.

CWE-476NULL Pointer Dereference

How to fix

Remediation Available

linuxDebian

Fixed in:5.10.46-1CVE-2021-47257

bpftoolRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

bpftoolRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

bpftool-debuginfoRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

bpftool-debuginfoRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernelRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernelRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-abi-stablelistsRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-abi-stablelistsRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-coreRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-coreRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-debugRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-debugRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-debug-coreRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-debug-coreRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-debug-debuginfoRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-debug-debuginfoRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-debug-develRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-debug-develRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-debug-modulesRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-debug-modulesRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-debug-modules-extraRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-debug-modules-extraRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-debuginfoRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-debuginfoRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-debuginfo-common-aarch64Rocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-debuginfo-common-aarch64Red Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-debuginfo-common-ppc64leRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-debuginfo-common-ppc64leRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-debuginfo-common-s390xRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-debuginfo-common-s390xRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-debuginfo-common-x86_64Red Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-debuginfo-common-x86_64Rocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-develRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-develRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-docRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-docRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-modulesRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-modulesRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-modules-extraRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-modules-extraRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-rtRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.rt7.357.el8_10RHSA-2024:5102

kernel-rtRocky

Fixed in:0:4.18.0-553.16.1.rt7.357.el8_10RHSA-2024:5102

kernel-rt-coreRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.rt7.357.el8_10RHSA-2024:5102

kernel-rt-coreRocky

Fixed in:0:4.18.0-553.16.1.rt7.357.el8_10RHSA-2024:5102

kernel-rt-debugRocky

Fixed in:0:4.18.0-553.16.1.rt7.357.el8_10RHSA-2024:5102

kernel-rt-debugRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.rt7.357.el8_10RHSA-2024:5102

kernel-rt-debug-coreRocky

Fixed in:0:4.18.0-553.16.1.rt7.357.el8_10RHSA-2024:5102

kernel-rt-debug-coreRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.rt7.357.el8_10RHSA-2024:5102

kernel-rt-debug-debuginfoRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.rt7.357.el8_10RHSA-2024:5102

kernel-rt-debug-debuginfoRocky

Fixed in:0:4.18.0-553.16.1.rt7.357.el8_10RHSA-2024:5102

kernel-rt-debug-develRocky

Fixed in:0:4.18.0-553.16.1.rt7.357.el8_10RHSA-2024:5102

kernel-rt-debug-develRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.rt7.357.el8_10RHSA-2024:5102

kernel-rt-debug-kvmRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.rt7.357.el8_10RHSA-2024:5102

kernel-rt-debug-kvmRocky

Fixed in:0:4.18.0-553.16.1.rt7.357.el8_10RHSA-2024:5102

kernel-rt-debug-modulesRocky

Fixed in:0:4.18.0-553.16.1.rt7.357.el8_10RHSA-2024:5102

kernel-rt-debug-modulesRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.rt7.357.el8_10RHSA-2024:5102

kernel-rt-debug-modules-extraRocky

Fixed in:0:4.18.0-553.16.1.rt7.357.el8_10RHSA-2024:5102

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

Fixed in:0:4.18.0-553.16.1.rt7.357.el8_10RHSA-2024:5102

kernel-rt-debuginfoRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.rt7.357.el8_10RHSA-2024:5102

kernel-rt-debuginfoRocky

Fixed in:0:4.18.0-553.16.1.rt7.357.el8_10RHSA-2024:5102

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

Fixed in:0:4.18.0-553.16.1.rt7.357.el8_10RHSA-2024:5102

kernel-rt-debuginfo-common-x86_64Rocky

Fixed in:0:4.18.0-553.16.1.rt7.357.el8_10RHSA-2024:5102

kernel-rt-develRocky

Fixed in:0:4.18.0-553.16.1.rt7.357.el8_10RHSA-2024:5102

kernel-rt-develRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.rt7.357.el8_10RHSA-2024:5102

kernel-rt-kvmRocky

Fixed in:0:4.18.0-553.16.1.rt7.357.el8_10RHSA-2024:5102

kernel-rt-kvmRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.rt7.357.el8_10RHSA-2024:5102

kernel-rt-modulesRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.rt7.357.el8_10RHSA-2024:5102

kernel-rt-modulesRocky

Fixed in:0:4.18.0-553.16.1.rt7.357.el8_10RHSA-2024:5102

kernel-rt-modules-extraRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.rt7.357.el8_10RHSA-2024:5102

kernel-rt-modules-extraRocky

Fixed in:0:4.18.0-553.16.1.rt7.357.el8_10RHSA-2024:5102

kernel-toolsRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-toolsRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-tools-debuginfoRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-tools-debuginfoRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-tools-libsRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-tools-libsRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-tools-libs-develRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-tools-libs-develRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-zfcpdumpRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-zfcpdumpRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-zfcpdump-coreRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-zfcpdump-coreRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-zfcpdump-debuginfoRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-zfcpdump-debuginfoRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-zfcpdump-develRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-zfcpdump-develRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-zfcpdump-modulesRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-zfcpdump-modulesRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-zfcpdump-modules-extraRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

kernel-zfcpdump-modules-extraRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

perfRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

perfRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

perf-debuginfoRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

perf-debuginfoRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

python3-perfRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

python3-perfRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

python3-perf-debuginfoRed Hat / RHEL

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

python3-perf-debuginfoRocky

Fixed in:0:4.18.0-553.16.1.el8_10RHSA-2024:5101

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

0.23%probability of exploitation in 30 days

13thpercentile

Low risk: more likely to be exploited than 13% of all known CVEs.

References

Patch7

Related Vulnerabilities

Other CWE-476 (NULL Pointer Dereference) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-21758	High	7.5	92%	-	Fix
CVE-2023-21547	High	7.5	88%	-	Fix
CVE-2014-3470	Medium	4.3	86%	-	Fix
CVE-2021-44224	High	8.2	82%	-	Fix
CVE-2016-0742	High	7.5	82%	-	Fix
CVE-2009-1386	Medium	5.0	80%	-	Fix

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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 2025-04-04.