CVE-2024-41082

nvme-fabrics: use reserved tag for reg read/write command

Description

In the Linux kernel, the following vulnerability has been resolved: nvme-fabrics: use reserved tag for reg read/write command In some scenarios, if too many commands are issued by nvme command in the same time by user tasks, this may exhaust all tags of admin_q. If a reset (nvme reset or IO timeout) occurs before these commands finish, reconnect routine may fail to update nvme regs due to insufficient tags, which will cause kernel hang forever. In order to workaround this issue, maybe we can let reg_read32()/reg_read64()/reg_write32() use reserved tags. This maybe safe for nvmf: 1. For the disable ctrl path, we will not issue connect command 2. For the enable ctrl / fw activate path, since connect and reg_xx() are called serially. So the reserved tags may still be enough while reg_xx() use reserved tags.

N/A

CVSS

Severity:

EPSS 0.10%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/165da9c67a26f08c9b956c15d701da7690f45bcb
https://git.kernel.org/stable/c/7dc3bfcb4c9cc58970fff6aaa48172cb224d85aa

Frequently Asked Questions

What is the severity of CVE-2024-41082?: CVE-2024-41082 has not yet been assigned a CVSS score.
How to fix CVE-2024-41082?: To fix CVE-2024-41082, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-41082 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2024-41082 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-41082?: CVE-2024-41082 affects Linux Linux, Linux Linux.

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