Is CVE-2023-53643 in the CISA KEV catalog?

No. CVE-2023-53643 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-53643?

CVE-2023-53643 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2023-53643?

CVE-2023-53643 has an EPSS score of 0.14% (4th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-53643?

Upgrade linux on debian 12 to 6.1.20-1 or later. Fixes are available for 157 affected products.

CVE & CISA-KEV Catalog

CVE-2023-53643

MEDIUM

5.5

CVSS v3

NVD

Description

In the Linux kernel, the following vulnerability has been resolved: nvme-tcp: don't access released socket during error recovery While the error recovery work is temporarily failing reconnect attempts, running the 'nvme list' command causes a kernel NULL pointer dereference by calling getsockname() with a released socket. During error recovery work, the nvme tcp socket is released and a new one created, so it is not safe to access the socket without proper check.

CWE-476NULL Pointer Dereference

How to fix

Remediation Available

linuxDebian

Fixed in:6.1.20-1CVE-2023-53643

bpftoolRocky

Fixed in:0:7.2.0-362.8.1.el9_3RHSA-2023:6583

bpftoolRed Hat / RHEL

Fixed in:0:7.2.0-362.8.1.el9_3RHSA-2023:6583

bpftool-debuginfoRocky

Fixed in:0:7.2.0-362.8.1.el9_3RHSA-2023:6583

bpftool-debuginfoRed Hat / RHEL

Fixed in:0:7.2.0-362.8.1.el9_3RHSA-2023:6583

kernelRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernelRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-64kRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-64kRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-64k-coreRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-64k-coreRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-64k-debugRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-64k-debugRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-64k-debug-coreRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-64k-debug-coreRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-64k-debug-debuginfoRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-64k-debug-debuginfoRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-64k-debug-develRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-64k-debug-develRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-64k-debug-devel-matchedRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

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

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-64k-debug-modulesRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-64k-debug-modulesRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

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

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-64k-debug-modules-coreRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-64k-debug-modules-extraRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

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

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-64k-debuginfoRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-64k-debuginfoRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-64k-develRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-64k-develRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-64k-devel-matchedRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-64k-devel-matchedRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-64k-modulesRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-64k-modulesRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-64k-modules-coreRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-64k-modules-coreRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-64k-modules-extraRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-64k-modules-extraRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-abi-stablelistsRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-abi-stablelistsRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-coreRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-coreRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-debugRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-debugRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-debug-coreRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-debug-coreRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-debug-debuginfoRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-debug-debuginfoRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-debug-develRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-debug-develRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-debug-devel-matchedRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-debug-devel-matchedRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-debug-modulesRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-debug-modulesRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-debug-modules-coreRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-debug-modules-coreRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-debug-modules-extraRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-debug-modules-extraRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-debug-uki-virtRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-debug-uki-virtRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-debuginfoRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-debuginfoRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-debuginfo-common-aarch64Rocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-debuginfo-common-aarch64Red Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-debuginfo-common-ppc64leRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-debuginfo-common-ppc64leRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-debuginfo-common-s390xRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-debuginfo-common-s390xRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-debuginfo-common-x86_64Red Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-debuginfo-common-x86_64Rocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-develRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-develRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-devel-matchedRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-devel-matchedRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-docRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-docRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-modulesRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-modulesRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-modules-coreRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-modules-coreRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-modules-extraRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-modules-extraRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-rtRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-rtRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-rt-coreRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-rt-coreRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-rt-debugRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-rt-debugRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-rt-debug-coreRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-rt-debug-coreRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-rt-debug-debuginfoRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-rt-debug-debuginfoRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-rt-debug-develRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-rt-debug-develRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-rt-debug-kvmRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-rt-debug-kvmRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-rt-debug-modulesRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-rt-debug-modulesRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-rt-debug-modules-coreRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

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

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

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

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-rt-debug-modules-extraRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-rt-debuginfoRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-rt-debuginfoRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-rt-develRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-rt-develRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-rt-kvmRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-rt-kvmRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-rt-modulesRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-rt-modulesRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-rt-modules-coreRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-rt-modules-coreRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-rt-modules-extraRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-rt-modules-extraRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-toolsRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-toolsRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-tools-debuginfoRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-tools-debuginfoRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-tools-libsRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-tools-libsRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-tools-libs-develRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-tools-libs-develRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-uki-virtRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-uki-virtRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-zfcpdumpRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-zfcpdumpRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-zfcpdump-coreRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-zfcpdump-coreRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-zfcpdump-debuginfoRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-zfcpdump-debuginfoRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-zfcpdump-develRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-zfcpdump-develRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-zfcpdump-devel-matchedRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-zfcpdump-devel-matchedRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-zfcpdump-modulesRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-zfcpdump-modulesRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-zfcpdump-modules-coreRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-zfcpdump-modules-coreRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-zfcpdump-modules-extraRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

kernel-zfcpdump-modules-extraRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

libperfRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

libperfRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

libperf-debuginfoRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

libperf-debuginfoRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

perfRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

perfRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

perf-debuginfoRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

perf-debuginfoRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

python3-perfRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

python3-perfRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

python3-perf-debuginfoRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

python3-perf-debuginfoRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

rtlaRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

rtlaRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

rvRed Hat / RHEL

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

rvRocky

Fixed in:0:5.14.0-362.8.1.el9_3RHSA-2023:6583

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

0.14%probability of exploitation in 30 days

4thpercentile

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

References

Patch3

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 2026-02-03.