CVE-2025-68300: fs/namespace: fix reference leak in grab_requested_mnt_ns

Deferred
AliasesUBUNTU-CVE-2025-68300DEBIAN-CVE-2025-68300
Published 16-12-2025Last modified 11-05-2026

Vulnerability summary

CVE-2025-68300 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.18% chance of exploitation in the next 30 days, higher than 8% of scored vulnerabilities.

Priority
Insufficient evidence

No CVSS vector published; no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
0.18%
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 6 · Related 6
USN-8094-1USN-8094-2USN-8094-3USN-8094-4USN-8094-5USN-8152-1

Timeline

  1. 16-12-2025
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: fs/namespace: fix reference leak in grab_requested_mnt_ns lookup_mnt_ns() already takes a reference on mnt_ns. grab_requested_mnt_ns() doesn't need to take an extra reference.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.18%

Chance of exploitation in the next 30 days

Percentile

8%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.18% 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: not stated in public data.

Ubuntu97 products
  • linux< 6.17.0-19.19
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 6.17.0-1009.9
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.17.11-1
Linux1 product
  • linux≥ ba306daa7fa8ae0be5d64c215e9d43a88b4bc8bf, < 4a16b2a0c1f033f95f5d0b98b9e40e8bf7c4c2c5 | ≥ 8ff97ade912dcfc5ac1783c4b8d615aacd26fd17, < fe256e59b8e7f126b2464ee32bd9fee131f0a883 | ≥ 78f0e33cd6c939a555aa80dbed2fec6b333a7660, < 7b6dcd9bfd869eee7693e45b1817dac8c56e5f86 | ≥ 6.12.59, < 6.12.61 | ≥ 6.17.9, < 6.17.11

3 vendors · 99 products

References

13 links
Show all 13 references