io_uring: fix possible deadlock in io_register_iowq_max_workers() (Linux Linux)

CVE-2024-41080
MEDIUM 5.5

At a glance

Source
NVD
EPSS
EPSS 0.20 % · percentile 10 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Modified

Description

In the Linux kernel, the following vulnerability has been resolved: io_uring: fix possible deadlock in io_register_iowq_max_workers() The io_register_iowq_max_workers() function calls io_put_sq_data(), which acquires the sqd->lock without releasing the uring_lock. Similar to the commit 009ad9f0c6ee ("io_uring: drop ctx->uring_lock before acquiring sqd->lock"), this can lead to a potential deadlock situation. To resolve this issue, the uring_lock is released before calling io_put_sq_data(), and then it is re-acquired after the function call. This change ensures that the locks are acquired in the correct order, preventing the possibility of a deadlock.

Weaknesses (CWE)

References

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected 2b188cc1bb857a9d4701ae59aa7768b5124e262e < b17397a0a5c56e111f61cb5b77d162664dc00de9 ; affected 2b188cc1bb857a9d4701ae59aa7768b5124e262e < 97ed7ff58de66c544692b3c2b988f3f594348de0 ; affected 2b188cc1bb857a9d4701ae59aa7768b5124e262e < fdacd09f2ddf7a00787291f08ee48c0421e5b709 ; affected 2b188cc1bb857a9d4701ae59aa7768b5124e262e < 950ac86cff338ab56e2eaf611f4936ee34893b63 ; affected 2b188cc1bb857a9d4701ae59aa7768b5124e262e < b571a367502c7ef94c688ef9c7f7d69a2ce3bcca ; affected 2b188cc1bb857a9d4701ae59aa7768b5124e262e < 73254a297c2dd094abec7c9efee32455ae875bdf
Linux · Linuxaffected 5.1 ; unaffected 0 < 5.1 ; unaffected 5.10.230 ≤ 5.10.* ; unaffected 5.15.173 ≤ 5.15.* ; unaffected 6.1.118 ≤ 6.1.* ; unaffected 6.6.62 ≤ 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