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CVE-2023-53643

nvme-tcp: don't access released socket during error recovery

High7.8EPSS 0.17%
Published
Updated
Reserved
Assigned by
Linux

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.

Scores

CVSS scores of CVE-2023-53643, by who scored it
Scored byCVSSScoreVector
LinuxCNA (assigner)3.1High7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVDNVD · Modified3.1Medium5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.17% · top 94% of all CVEs (5 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.

Weakness

Affected products

  • Linux · Linux

    • affected 02c57a82c0081141abc19150beab48ef47f97f18 – < fe2d9e54165dadaa0d0cc3355c0be9c3e129fa0d
    • affected 02c57a82c0081141abc19150beab48ef47f97f18 – < d82f762db4776fa11de88018f0f5de2d5db72a72
    • affected 02c57a82c0081141abc19150beab48ef47f97f18 – < 76d54bf20cdcc1ed7569a89885e09636e9a8d71d

  • Linux · Linux

    • affected 6.1
    • unaffected < 6.1
    • unaffected 6.1.18 – ≤ 6.1.*
    • unaffected 6.2.5 – ≤ 6.2.*
    • unaffected 6.3 – ≤ *

References (3)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .