CVE-2024-27435
mediumpriority · track · 22EPSS 0.004 · 34 %ileDEEURUUSEPSS · scored 2026-10-28
In the Linux kernel, the following vulnerability has been resolved: nvme: fix reconnection fail due to reserved tag allocation We found a issue on production environment while using NVMe over RDMA, admin_q reconnect failed forever while remote target and network is ok. After dig into it, we found it may caused by a ABBA deadlock due to tag allocation. In my case, the tag was hold by a keep alive request waiting inside admin_q, as we quiesced admin_q while reset ctrl, so the request maked as idle and will not process before reset success. As fabric_q shares tagset with admin_q, while reconnect remote target, we need a tag for connect command, but the only one reserved tag was held by keep alive command which waiting inside admin_q. As a result, we failed to reconnect admin_q forever. In order to fix this issue, I think we should keep two reserved tags for admin queue.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.1–7.5
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
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affected products (74)
Products and version ranges known to be affected.
- IBM Business Automation Workflow 24.0.0all versionscert_bundDEcpe:/a:ibm:business_automation_workflow:24.0.0
advisories (1)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2024-1188Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of ServiceDeutsch2024-05-20csaf · cert_bundDE
Ein lokaler Angreifer kann mehrere Schwachstellen in Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen.
also known as (4)
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sources
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references (18)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/cve-2024-27435cnnvd
- https://cxsecurity.com/cveshow/CVE-2024-27435/cnnvd
- https://git.kernel.org/stable/c/149afee5c7418ec5db9d7387b9c9a5c1eb7ea2a8cnnvd
- https://git.kernel.org/stable/c/262da920896e2f2ab0e3947d9dbee0aa09045818cnnvd
- https://git.kernel.org/stable/c/6851778504cdb49431809b4ba061903d5f592c96cnnvd
- https://git.kernel.org/stable/c/de105068fead55ed5c07ade75e9c8e7f86a00d1dcnnvd
- https://git.kernel.org/stable/c/ff2f90f88d78559802466ad1c84ac5bda4416b3acnnvd
- https://vigilance.fr/vulnerability/Linux-kernel-multiple-vulnerabilities-dated-20-05-2024-44342cnnvd
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