9.8

CVE-2021-47378: nvme-rdma: destroy cm id before destroy qp to avoid use after free

Analyzed
AliasesSUSE-SU-2024:3014-1SUSE-SU-2024:3021-1SUSE-SU-2024:3027-1
Published 21-05-2024Last modified 05-08-2026

Vulnerability summary

CVE-2021-47378 is a critical (CVSS 9.8) Use After Free vulnerability in linux. EPSS estimates a 1.18% chance of exploitation in the next 30 days, higher than 67.6% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 9.8 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
1.18%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 65 · Related 62
RHSA-2022:7683RHSA-2022:8267RHSA-2024:6297SUSE-SU-2024:1979-1SUSE-SU-2024:1983-1SUSE-SU-2024:2008-1

Timeline

  1. 21-05-2024
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

1.18%

Chance of exploitation in the next 30 days

Percentile

68%

Versus all other CVEs

30-day change

Increase +0.01 pp

From 1.17% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu89 products
  • linux< 4.15.0-254.266 | < 5.4.0-234.254
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 4.15.0-1195.208 | < 5.4.0-1162.173
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Suse4 products
  • kgraft-patch-SLE12-SP5_Update_47&distro=SUSE Linux Enterprise Live Patching 12 SP5< 14-2.1
  • kgraft-patch-SLE12-SP5_Update_48&distro=SUSE Linux Enterprise Live Patching 12 SP5< 13-2.1
  • kgraft-patch-SLE12-SP5_Update_49&distro=SUSE Linux Enterprise Live Patching 12 SP5< 12-2.1
  • kgraft-patch-SLE12-SP5_Update_53&distro=SUSE Linux Enterprise Live Patching 12 SP5< 8-2.1
Linux2 products
  • linux≥ 7110230719602852481c2793d054f866b2bf4a2b, < ecf0dc5a904830c926a64feffd8e01141f89822f | ≥ 7110230719602852481c2793d054f866b2bf4a2b, < d268a182c56e8361e19fb781137411643312b994 | ≥ 7110230719602852481c2793d054f866b2bf4a2b, < 9817d763dbe15327b9b3ff4404fa6f27f927e744 | 4.8
  • linux_kernel< 5.10.70 | ≥ 5.11, < 5.14.9 | 5.15:rc1
Debian1 product
  • linux< 5.14.9-1

4 vendors · 96 products

References

23 links
Show all 23 references