nvmet-fc: avoid scheduling association deletion twice (Linux Linux)

CVE-2025-40343
CRITICAL 9.8

At a glance

Source
NVD
EPSS
EPSS 0.65 % · percentile 51 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Deferred

Description

In the Linux kernel, the following vulnerability has been resolved: nvmet-fc: avoid scheduling association deletion twice When forcefully shutting down a port via the configfs interface, nvmet_port_subsys_drop_link() first calls nvmet_port_del_ctrls() and then nvmet_disable_port(). Both functions will eventually schedule all remaining associations for deletion. The current implementation checks whether an association is about to be removed, but only after the work item has already been scheduled. As a result, it is possible for the first scheduled work item to free all resources, and then for the same work item to be scheduled again for deletion. Because the association list is an RCU list, it is not possible to take a lock and remove the list entry directly, so it cannot be looked up again. Instead, a flag (terminating) must be used to determine whether the association is already in the process of being deleted.

References

Scores

VersionScoreVectorScored by
CVSS 3.1CRITICAL 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HLinux
CVSS 3.1CRITICAL 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HNVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)

European references

CERT-FR advisories

Affected products

ProductVersions
Linux · Linuxaffected a07b4970f464f13640e28e16dad6cfa33647cc99 < 2f4852db87e25d4e226b25cb6f652fef9504360e ; affected a07b4970f464f13640e28e16dad6cfa33647cc99 < 85e2ce1920cb511d57aae59f0df6ff85b28bf04d ; affected a07b4970f464f13640e28e16dad6cfa33647cc99 < 601ed47b2363c24d948d7bac0c23abc8bd459570 ; affected a07b4970f464f13640e28e16dad6cfa33647cc99 < 04d17540ef51e2c291eb863ca87fd332259b2d40 ; affected a07b4970f464f13640e28e16dad6cfa33647cc99 < c09ac9a63fc3aaf4670ad7b5e4f5afd764424154 ; affected a07b4970f464f13640e28e16dad6cfa33647cc99 < f2537be4f8421f6495edfa0bc284d722f253841d
Linux · Linuxaffected 4.8 ; unaffected 0 < 4.8 ; unaffected 5.15.197 ≤ 5.15.* ; unaffected 6.1.159 ≤ 6.1.* ; unaffected 6.6.117 ≤ 6.6.* ; unaffected 6.12.58 ≤ 6.12.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD