blk-mq: fix IO hang from sbitmap wakeup race

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Summary

CVECVE-2024-26671
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-04-02 07:15:43 UTC
Updated2026-10-15 01:17:22 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: blk-mq: fix IO hang from sbitmap wakeup race In blk_mq_mark_tag_wait(), __add_wait_queue() may be re-ordered with the following blk_mq_get_driver_tag() in case of getting driver tag failure. Then in __sbitmap_queue_wake_up(), waitqueue_active() may not observe the added waiter in blk_mq_mark_tag_wait() and wake up nothing, meantime blk_mq_mark_tag_wait() can't get driver tag successfully. This issue can be reproduced by running the following test in loop, and fio hang can be observed in < 30min when running it on my test VM in laptop. modprobe -r scsi_debug modprobe scsi_debug delay=0 dev_size_mb=4096 max_queue=1 host_max_queue=1 submit_queues=4 dev=`ls -d /sys/bus/pseudo/drivers/scsi_debug/adapter*/host*/target*/*/block/* | head -1 | xargs basename` fio --filename=/dev/"$dev" --direct=1 --rw=randrw --bs=4k --iodepth=1 \ --runtime=100 --numjobs=40 --time_based --name=test \ --ioengine=libaio Fix the issue by adding one explicit barrier in blk_mq_mark_tag_wait(), which is just fine in case of running out of tag.

Risk And Classification

Primary CVSS: v3.1 4.7 MEDIUM from [email protected]

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

Problem Types: CWE-362

CVSS v3.1 Breakdown

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

CVSS:3.1/AV:L/AC:H/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 da55f2cc78418dee88400aafbbaed19d7ac8188e 9525b38180e2753f0daa1a522b7767a2aa969676 git Not specified
CNA Linux Linux affected da55f2cc78418dee88400aafbbaed19d7ac8188e ecd7744a1446eb02ccc63e493e2eb6ede4ef1e10 git Not specified
CNA Linux Linux affected da55f2cc78418dee88400aafbbaed19d7ac8188e 7610ba1319253225a9ba8a9d28d472fc883b4e2f git Not specified
CNA Linux Linux affected da55f2cc78418dee88400aafbbaed19d7ac8188e 89e0e66682e1538aeeaa3109503473663cd24c8b git Not specified
CNA Linux Linux affected da55f2cc78418dee88400aafbbaed19d7ac8188e 1d9c777d3e70bdc57dddf7a14a80059d65919e56 git Not specified
CNA Linux Linux affected da55f2cc78418dee88400aafbbaed19d7ac8188e 6d8b01624a2540336a32be91f25187a433af53a0 git Not specified
CNA Linux Linux affected da55f2cc78418dee88400aafbbaed19d7ac8188e f1bc0d8163f8ee84a8d5affdf624cfad657df1d2 git Not specified
CNA Linux Linux affected da55f2cc78418dee88400aafbbaed19d7ac8188e 5266caaf5660529e3da53004b8b7174cab6374ed git Not specified
CNA Linux Linux affected 4.11 Not specified
CNA Linux Linux unaffected 4.11 semver Not specified
CNA Linux Linux unaffected 4.19.307 4.19.* semver Not specified
CNA Linux Linux unaffected 5.4.269 5.4.* semver Not specified
CNA Linux Linux unaffected 5.10.210 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.149 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.77 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.16 6.6.* semver Not specified
CNA Linux Linux unaffected 6.7.4 6.7.* semver Not specified
CNA Linux Linux unaffected 6.8 * original_commit_for_fix Not specified
ADP Siemens RUGGEDCOM RST2428P unaffected * custom Not specified
ADP Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 Family unaffected * custom Not specified
ADP Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 Family unaffected * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified

References

ReferenceSourceLinkTags
cert-portal.siemens.com/productcert/html/ssa-398330.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/89e0e66682e1538aeeaa3109503473663cd24c8b af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2024/06/msg00017.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List
git.kernel.org/stable/c/5266caaf5660529e3da53004b8b7174cab6374ed af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/ecd7744a1446eb02ccc63e493e2eb6ede4ef1e10 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/7610ba1319253225a9ba8a9d28d472fc883b4e2f af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/6d8b01624a2540336a32be91f25187a433af53a0 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-613116.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/9525b38180e2753f0daa1a522b7767a2aa969676 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/1d9c777d3e70bdc57dddf7a14a80059d65919e56 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
git.kernel.org/stable/c/f1bc0d8163f8ee84a8d5affdf624cfad657df1d2 af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Patch
lists.debian.org/debian-lts-announce/2024/06/msg00020.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 6000567 Debian Security Update for linux (DSA 5658-1)

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