CVE-2025-68191: linux

CVSS: UnknownDeferred
AliasesUBUNTU-CVE-2025-68191DEBIAN-CVE-2025-68191
Published 16-12-2025Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2025-68191 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.21% chance of exploitation in the next 30 days, higher than 10.1% of scored vulnerabilities.

Overall risk
0/100
0100
Minimal · default modelHow is this calculated?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
0.21%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 28 · Related 25
DLA-4436-1MGASA-2026-0017MGASA-2026-0018USN-8029-1USN-8029-2USN-8029-3

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: udp_tunnel: use netdev_warn() instead of netdev_WARN() netdev_WARN() uses WARN/WARN_ON to print a backtrace along with file and line information. In this case, udp_tunnel_nic_register() returning an error is just a failed operation, not a kernel bug. udp_tunnel_nic_register() can fail due to a memory allocation failure (kzalloc() or udp_tunnel_nic_alloc()). This is a normal runtime error and not a kernel bug. Replace netdev_WARN() with netdev_warn() accordingly.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.21%

Chance of exploitation in the next 30 days

Percentile

10%

Versus all other CVEs

30-day change

0.00 pp

From 0.21% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.21%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu154 products
  • linuxAll versions (No fix recorded) | < 5.15.0-173.183 | < 6.8.0-106.106 | < 6.17.0-14.14
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1103.110 | < 6.8.0-1050.53 | < 6.17.0-1007.7
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.1.159-1 | < 6.12.63-1 | < 6.17.8-1
Linux1 product
  • linux≥ cc4e3835eff474aa274d6e1d18f69d9d296d3b76, < 087f1ed450dc6e7e49ffbbbe5b78be1218c6d5e0 | ≥ cc4e3835eff474aa274d6e1d18f69d9d296d3b76, < 45e4e4a8772fa1c5f6f38e82b732b3a9d8137af4 | ≥ cc4e3835eff474aa274d6e1d18f69d9d296d3b76, < 7758ec35ff3e9a31558eda4f0f9eb0ddfa78a8ba | ≥ cc4e3835eff474aa274d6e1d18f69d9d296d3b76, < c018a87942bf1607aeebf8dba5a210ca9a09a0fd | ≥ cc4e3835eff474aa274d6e1d18f69d9d296d3b76, < 51b3033088f0420b19027e3d54cd989b6ebd987e | ≥ cc4e3835eff474aa274d6e1d18f69d9d296d3b76, < 3c3b148bf8384c8a787753cf20abde1c5731f97f | ≥ cc4e3835eff474aa274d6e1d18f69d9d296d3b76, < dc2f650f7e6857bf384069c1a56b2937a1ee370d | 5.9

3 vendors · 156 products

References

36 links
Show all 36 references