5.5

CVE-2025-71084: RDMA/cm: Fix leaking the multicast GID table reference

Modified
AliasesUBUNTU-CVE-2025-71084DEBIAN-CVE-2025-71084
Published 13-01-2026Last modified 19-10-2026

Vulnerability summary

CVE-2025-71084 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.14% chance of exploitation in the next 30 days, higher than 3.1% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.14%
0%100%
Low · 0.00 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 46 · Related 42
DLA-4475-1DLA-4476-1DSA-6126-1DSA-6127-1MGASA-2026-0017MGASA-2026-0018

Timeline

  1. 13-01-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/cm: Fix leaking the multicast GID table reference If the CM ID is destroyed while the CM event for multicast creating is still queued the cancel_work_sync() will prevent the work from running which also prevents destroying the ah_attr. This leaks a refcount and triggers a WARN: GID entry ref leak for dev syz1 index 2 ref=573 WARNING: CPU: 1 PID: 655 at drivers/infiniband/core/cache.c:809 release_gid_table drivers/infiniband/core/cache.c:806 [inline] WARNING: CPU: 1 PID: 655 at drivers/infiniband/core/cache.c:809 gid_table_release_one+0x284/0x3cc drivers/infiniband/core/cache.c:886 Destroy the ah_attr after canceling the work, it is safe to call this twice.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.14%

Chance of exploitation in the next 30 days

Percentile

3%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.13% 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: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu144 products
  • linux< 5.15.0-173.183 | < 6.8.0-110.110 | < 6.17.0-22.22
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 5.15.0-1103.110 | < 6.8.0-1052.55 | < 6.17.0-1012.12
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 60d613b39e8d0c9f3b526e9c96445422b4562d76, < d5ce588a9552878859a4d44b70b724216c188a5f | ≥ fe454dc31e84f8c14cb8942fcb61666c9f40745b, < abf38398724ecc888f62c678d288da40d11878af | ≥ fe454dc31e84f8c14cb8942fcb61666c9f40745b, < ab668a58c4a2ccb6d54add7a76f2f955d15d0196 | ≥ fe454dc31e84f8c14cb8942fcb61666c9f40745b, < c0acdee513239e1d6e1b490f56be0e6837dfd162 | ≥ fe454dc31e84f8c14cb8942fcb61666c9f40745b, < 5cb34bb5fd726491b809efbeb5cfd63ae5bf9cf3 | ≥ fe454dc31e84f8c14cb8942fcb61666c9f40745b, < 3ba6d01c4b3c584264dc733c6a2ecc5bbc8e0bb5 | ≥ fe454dc31e84f8c14cb8942fcb61666c9f40745b, < 57f3cb6c84159d12ba343574df2115fb18dd83ca | a3262b3884dd67b4c5632ce7cdf9cff9d1a575d4 | ≥ 5.10.20, < 5.10.248 | ≥ 5.11.3, < 5.12 | 5.12
  • linux_kernelEOL≥ 5.10.20, < 5.10.248 | ≥ 5.11.3, < 5.12 | ≥ 5.12.1, < 5.15.198 | ≥ 5.16, < 6.1.160 | ≥ 6.2, < 6.6.120 | ≥ 6.7, < 6.12.64 | ≥ 6.13, < 6.18.4 | 5.12 | 6.19:rc1 | 6.19:rc2 | 6.19:rc3 | 6.19:rc4 | 6.19:rc5 | 6.19:rc6 | 6.19:rc7 | 6.19:rc8
Debian1 product
  • linux< 6.1.162-1 | < 6.12.69-1 | < 6.18.5-1

3 vendors · 147 products

References

42 links
Show all 42 references