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CVE-2026-92488: RDMA/erdma: complete object teardown when the destroy command fails

Received
AliasesUBUNTU-CVE-2026-92488DEBIAN-CVE-2026-92488
Published 17-09-2026Last modified 30-10-2026

Vulnerability summary

CVE-2026-92488 is a high (CVSS 7.0) vulnerability in linux. EPSS estimates a 0.12% chance of exploitation in the next 30 days, higher than 2% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.0/10
010
High · v3.1 (CVE.org)
EPSS score
0.12%
0%100%
Low · -0.03 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 7 · Related 5
MGASA-2026-0506MGASA-2026-0542OPENSUSE-SU-2026:11893-1SUSE-SU-2026:24371-1SUSE-SU-2026:24379-1SUSE-SU-2026:4935-1

Timeline

  1. 17-09-2026
    PublishedVulnerability first disclosed.
  2. 30-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/erdma: complete object teardown when the destroy command fails erdma_destroy_qp(), erdma_destroy_cq(), erdma_dereg_mr(), and erdma_destroy_ah() returned early when erdma_post_cmd_wait() failed, leaking the queue buffers, MTTs, doorbells and the STAG, QPN, CQN and AHN identifiers. A command timeout clears ERDMA_CMDQ_STATE_OK_BIT and permanently disables the command queue, so no retry can succeed; the RDMA core keeps the object after a failed destructor and forced uverbs cleanup then nulls the pointers, making the resources unreachable. Warn on failure but release every software-owned resource and return success, since during terminal destruction the hardware command result is only diagnostic.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.12%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

Decrease -0.03 pp

From 0.15% 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

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu142 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian2 products
  • linuxAll versions (No fix recorded) | < 6.12.111-1 | < 7.2.6-1
  • linux-6.12< 6.12.111-1~deb12u1
Linux1 product
  • linux≥ 155055771704f8cbb5c176a4309b7dc30a50450c, < 4f5cd6a2081ec956db25b8e9f71d052f68d522c7 | ≥ 155055771704f8cbb5c176a4309b7dc30a50450c, < 3886d944b506e0cc681646beb03c3024cb375a68 | ≥ 155055771704f8cbb5c176a4309b7dc30a50450c, < 5fcfc988ecf3e2bbe308b95c2c0d2f011d9afabe | ≥ 155055771704f8cbb5c176a4309b7dc30a50450c, < ce7d205c264665517c25e8a3231cf2d0c2443e3c | ≥ 155055771704f8cbb5c176a4309b7dc30a50450c, < 334145d683ad3e31d052247f10807f2ebc950351 | ≥ 155055771704f8cbb5c176a4309b7dc30a50450c, < 652befcba956ef357f480525ccbe25c59bc81d4d | 6.0

3 vendors · 145 products

References

10 links