by Kastro
Paper/Archive/CVE-2021-47378

CVE-2021-47378

Linux Linux — nvme-rdma: destroy cm id before destroy qp to avoid use after free

EPSS 1%CVSS 9.8
critical.is priorityof 100
43
CVSS 9.8 (CNA, ADP agree)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 67.6.676 × 2013.5No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

In the Linux kernel, the following vulnerability has been resolved: nvme-rdma: destroy cm id before destroy qp to avoid use after free We should always destroy cm_id before destroy qp to avoid to get cma event after qp was destroyed, which may lead to use after free. In RDMA connection establishment error flow, don't destroy qp in cm event handler.Just report cm_error to upper level, qp will be destroy in nvme_rdma_alloc_queue() after destroy cm id.

Affected

ProductAffectedFixed inSource
Linux7110230719602852481c2793d054f866b2bf4a2b – < ecf0dc5a904830c926a64feffd8e01141f89822fecf0dc5a904830c926a64feffd8e01141f89822fCNA
Linux7110230719602852481c2793d054f866b2bf4a2b – < d268a182c56e8361e19fb781137411643312b994d268a182c56e8361e19fb781137411643312b994CNA
Linux7110230719602852481c2793d054f866b2bf4a2b – < 9817d763dbe15327b9b3ff4404fa6f27f927e7449817d763dbe15327b9b3ff4404fa6f27f927e744CNA
Linux4.8–CNA
linux_kernel1da177e4c3f4–CISA-ADP
linux_kernelsee advisory5.10.70CISA-ADP
linux_kernelsee advisory5.14.9CISA-ADP
linux_kernelsee advisory5.15CISA-ADP

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Linux (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refgit.kernel.org/stable/c/ecf0dc5a904830c926a64feffd8e01141f89822frefgit.kernel.org/stable/c/d268a182c56e8361e19fb781137411643312b994refgit.kernel.org/stable/c/9817d763dbe15327b9b3ff4404fa6f27f927e744