nvme-fabrics: use reserved tag for reg read/write command

Summary

CVECVE-2024-41082
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-07-29 15:15:15 UTC
Updated2026-10-03 11:17:30 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: nvme-fabrics: use reserved tag for reg read/write command In some scenarios, if too many commands are issued by nvme command in the same time by user tasks, this may exhaust all tags of admin_q. If a reset (nvme reset or IO timeout) occurs before these commands finish, reconnect routine may fail to update nvme regs due to insufficient tags, which will cause kernel hang forever. In order to workaround this issue, maybe we can let reg_read32()/reg_read64()/reg_write32() use reserved tags. This maybe safe for nvmf: 1. For the disable ctrl path, we will not issue connect command 2. For the enable ctrl / fw activate path, since connect and reg_xx() are called serially. So the reserved tags may still be enough while reg_xx() use reserved tags.

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

EPSS: 0.002570000 probability, percentile 0.158280000 (date 2026-10-05)

Problem Types: NVD-CWE-noinfo

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
Operating System Linux Linux Kernel 6.10 rc1 All All
Operating System Linux Linux Kernel 6.10 rc2 All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected e7832cb48a654cd12b2bc9181b2f0ad49d526ac6 cc91c461cf3902993364ea85d8814ba7786c95b1 git Not specified
CNA Linux Linux affected e7832cb48a654cd12b2bc9181b2f0ad49d526ac6 165da9c67a26f08c9b956c15d701da7690f45bcb git Not specified
CNA Linux Linux affected e7832cb48a654cd12b2bc9181b2f0ad49d526ac6 7dc3bfcb4c9cc58970fff6aaa48172cb224d85aa git Not specified
CNA Linux Linux affected 5.4 Not specified
CNA Linux Linux unaffected 5.4 semver Not specified
CNA Linux Linux unaffected 6.6.158 6.6.* semver Not specified
CNA Linux Linux unaffected 6.9.11 6.9.* semver Not specified
CNA Linux Linux unaffected 6.10 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/cc91c461cf3902993364ea85d8814ba7786c95b1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/165da9c67a26f08c9b956c15d701da7690f45bcb af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/7dc3bfcb4c9cc58970fff6aaa48172cb224d85aa af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
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