nvmet-tcp: Fix a kernel panic when host sends an invalid H2C PDU length

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Summary

CVECVE-2023-52454
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-02-23 15:15:08 UTC
Updated2026-08-04 10:18:28 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: Fix a kernel panic when host sends an invalid H2C PDU length If the host sends an H2CData command with an invalid DATAL, the kernel may crash in nvmet_tcp_build_pdu_iovec(). Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 lr : nvmet_tcp_io_work+0x6ac/0x718 [nvmet_tcp] Call trace: process_one_work+0x174/0x3c8 worker_thread+0x2d0/0x3e8 kthread+0x104/0x110 Fix the bug by raising a fatal error if DATAL isn't coherent with the packet size. Also, the PDU length should never exceed the MAXH2CDATA parameter which has been communicated to the host in nvmet_tcp_handle_icreq().

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

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

Problem Types: CWE-476

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 872d26a391da92ed8f0c0f5cb5fef428067b7f30 ee5e7632e981673f42a50ade25e71e612e543d9d git Not specified
CNA Linux Linux affected 872d26a391da92ed8f0c0f5cb5fef428067b7f30 f775f2621c2ac5cc3a0b3a64665dad4fb146e510 git Not specified
CNA Linux Linux affected 872d26a391da92ed8f0c0f5cb5fef428067b7f30 4cb3cf7177ae3666be7fb27d4ad4d72a295fb02d git Not specified
CNA Linux Linux affected 872d26a391da92ed8f0c0f5cb5fef428067b7f30 2871aa407007f6f531fae181ad252486e022df42 git Not specified
CNA Linux Linux affected 872d26a391da92ed8f0c0f5cb5fef428067b7f30 24e05760186dc070d3db190ca61efdbce23afc88 git Not specified
CNA Linux Linux affected 872d26a391da92ed8f0c0f5cb5fef428067b7f30 70154e8d015c9b4fb56c1a2ef1fc8b83d45c7f68 git Not specified
CNA Linux Linux affected 872d26a391da92ed8f0c0f5cb5fef428067b7f30 efa56305908ba20de2104f1b8508c6a7401833be git Not specified
CNA Linux Linux affected 5.0 Not specified
CNA Linux Linux unaffected 5.0 semver Not specified
CNA Linux Linux unaffected 5.4.268 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.209 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.148 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.75 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.14 6.6.* semver Not specified
CNA Linux Linux unaffected 6.7.2 6.7.* semver Not specified
CNA Linux Linux unaffected 6.8 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/efa56305908ba20de2104f1b8508c6a7401833be af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2024/06/msg00016.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
git.kernel.org/stable/c/f775f2621c2ac5cc3a0b3a64665dad4fb146e510 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/70154e8d015c9b4fb56c1a2ef1fc8b83d45c7f68 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/2871aa407007f6f531fae181ad252486e022df42 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/ee5e7632e981673f42a50ade25e71e612e543d9d af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/4cb3cf7177ae3666be7fb27d4ad4d72a295fb02d af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/24e05760186dc070d3db190ca61efdbce23afc88 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 200182 Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-6688-1)
  • 200241 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6726-1)
  • 200243 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6725-1)

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