CVE - CVE-2024-27435

CVE-ID
CVE-2024-27435	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/149afee5c7418ec5db9d7387b9c9a5c1eb7ea2a8 URL:https://git.kernel.org/stable/c/149afee5c7418ec5db9d7387b9c9a5c1eb7ea2a8 MISC:https://git.kernel.org/stable/c/262da920896e2f2ab0e3947d9dbee0aa09045818 URL:https://git.kernel.org/stable/c/262da920896e2f2ab0e3947d9dbee0aa09045818 MISC:https://git.kernel.org/stable/c/6851778504cdb49431809b4ba061903d5f592c96 URL:https://git.kernel.org/stable/c/6851778504cdb49431809b4ba061903d5f592c96 MISC:https://git.kernel.org/stable/c/de105068fead55ed5c07ade75e9c8e7f86a00d1d URL:https://git.kernel.org/stable/c/de105068fead55ed5c07ade75e9c8e7f86a00d1d MISC:https://git.kernel.org/stable/c/ff2f90f88d78559802466ad1c84ac5bda4416b3a URL:https://git.kernel.org/stable/c/ff2f90f88d78559802466ad1c84ac5bda4416b3a
Assigning CNA
kernel.org
Date Record Created
20240225	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240225)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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