7.8

CVE-2026-46189: RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path

Modified
AliasesUBUNTU-CVE-2026-46189DEBIAN-CVE-2026-46189
Published 28-05-2026Last modified 09-09-2026

Vulnerability summary

CVE-2026-46189 is a high (CVSS 7.8) Double Free vulnerability in linux. EPSS estimates a 0.14% chance of exploitation in the next 30 days, higher than 3.6% 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
7.8/10
010
High · 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 71 · Related 52
OPENSUSE-SU-2026:10954-1OPENSUSE-SU-2026:21555-1RHSA-2026:30848RHSA-2026:33685RHSA-2026:33743RHSA-2026:35904

Timeline

  1. 28-05-2026
    PublishedVulnerability first disclosed.
  2. 09-09-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path Sashiko points out that pvrdma_uar_free() is already called within pvrdma_dealloc_ucontext(), so calling it before triggers a double free.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.14%

Chance of exploitation in the next 30 days

Percentile

4%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.14% 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.

Ubuntu165 products
  • linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-136.136 | < 7.0.0-28.28
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1061.64 | < 7.0.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1, < 269967d7693304e1f06ed2dff4ebbbeeb397cda4 | ≥ 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1, < 1df5711121cdc11e76b889408fdbe459feba1d39 | ≥ 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1, < 3a231c34c5bc3d3cfc850b877758ec9fdaa8a483 | ≥ 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1, < ecc36a82ecfcfdf3c6606d209f22ec5543c410e0 | ≥ 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1, < 45d25e3ec17900bf5a9d6876ff16ceee31c4c0e0 | ≥ 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1, < 0c63333ff97bd1275294fd12840a0efe9d7a4c59 | ≥ 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1, < 935ee27d0904aa944cbcc979094c20e5ef62eead | ≥ 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1, < e38e86995df27f1f854063dab1f0c6a513db3faf | 4.10
  • linux_kernel≥ 4.10, < 5.10.258 | ≥ 5.11, < 5.15.209 | ≥ 5.16, < 6.1.175 | ≥ 6.2, < 6.6.140 | ≥ 6.7, < 6.12.88 | ≥ 6.13, < 6.18.30 | ≥ 6.19, < 7.0.7 | 7.1:rc1 | 7.1:rc2
Debian1 product
  • linux< 6.1.176-1 | < 6.12.88-1 | < 7.0.7-1

3 vendors · 168 products

References

65 links
Show all 65 references