nvme-fc: do not wait in vain when unloading module (Linux Linux)

CVE-2024-26846
MEDIUM 4.4

At a glance

Source
NVD
EPSS
EPSS 0.22 % · percentile 12 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Analyzed

Description

In the Linux kernel, the following vulnerability has been resolved: nvme-fc: do not wait in vain when unloading module The module exit path has race between deleting all controllers and freeing 'left over IDs'. To prevent double free a synchronization between nvme_delete_ctrl and ida_destroy has been added by the initial commit. There is some logic around trying to prevent from hanging forever in wait_for_completion, though it does not handling all cases. E.g. blktests is able to reproduce the situation where the module unload hangs forever. If we completely rely on the cleanup code executed from the nvme_delete_ctrl path, all IDs will be freed eventually. This makes calling ida_destroy unnecessary. We only have to ensure that all nvme_delete_ctrl code has been executed before we leave nvme_fc_exit_module. This is done by flushing the nvme_delete_wq workqueue. While at it, remove the unused nvme_fc_wq workqueue too.

Weaknesses (CWE)

References

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 4.4CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:HCISA-ADP
CVSS 3.1MEDIUM 4.4CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:HNVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected 4c73cbdff1119d088ed16d63def59ad32b11b18f < 4f2c95015ec2a1899161be6c0bdaecedd5a7bfb2 ; affected 4c73cbdff1119d088ed16d63def59ad32b11b18f < 0bf567d6d9ffe09e059bbdfb4d07143cef42c75c ; affected 4c73cbdff1119d088ed16d63def59ad32b11b18f < 085195aa90a924c79e35569bcdad860d764a8e17 ; affected 4c73cbdff1119d088ed16d63def59ad32b11b18f < baa6b7eb8c66486bd64608adc63fe03b30d3c0b9 ; affected 4c73cbdff1119d088ed16d63def59ad32b11b18f < c0882c366418bf9c19e1ba7f270fe377a9bf5d67 ; affected 4c73cbdff1119d088ed16d63def59ad32b11b18f < 70fbfc47a392b98e5f8dba70c6efc6839205c982
Linux · Linuxaffected 5.3 ; unaffected 0 < 5.3 ; unaffected 5.10.211 ≤ 5.10.* ; unaffected 5.15.150 ≤ 5.15.* ; unaffected 6.1.80 ≤ 6.1.* ; unaffected 6.6.19 ≤ 6.6.*

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