6.8

CVE-2025-40071: linux

CVSS: 6.8v4.0MediumDeferred
AliasesUBUNTU-CVE-2025-40071DEBIAN-CVE-2025-40071
Published 28-10-2025Last modified 23-05-2026
Open JSON

Vulnerability summary

CVE-2025-40071 is a medium (CVSS 6.8) vulnerability in linux. EPSS estimates a 0.20% chance of exploitation in the next 30 days, higher than 9.4% of scored vulnerabilities.

Overall risk
27/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.8/10
010
Medium · v4.0 (OSV · Ubuntu), selected by version preference
EPSS score
0.20%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 34 · Related 32
MGASA-2025-0309MGASA-2025-0310OPENSUSE-SU-2025:15702-1OPENSUSE-SU-2025:20091-1OPENSUSE-SU-2026:10301-1SUSE-SU-2025:21040-1

Timeline

  1. 28-10-2025
    PublishedVulnerability first disclosed.
  2. 23-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: tty: n_gsm: Don't block input queue by waiting MSC Currently gsm_queue() processes incoming frames and when opening a DLC channel it calls gsm_dlci_open() which calls gsm_modem_update(). If basic mode is used it calls gsm_modem_upd_via_msc() and it cannot block the input queue by waiting the response to come into the same input queue. Instead allow sending Modem Status Command without waiting for remote end to respond. Define a new function gsm_modem_send_initial_msc() for this purpose. As MSC is only valid for basic encoding, it does not do anything for advanced or when convergence layer type 2 is used.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

0.20%

Chance of exploitation in the next 30 days

Percentile

9%

Versus all other CVEs

30-day change

+0.01 pp

From 0.19% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.20%

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

Ubuntu142 products
  • linuxAll versions (No fix recorded) | < 6.8.0-106.106 | < 6.17.0-14.14
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 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
  • linuxAll versions (No fix recorded) | < 6.12.57-1 | < 6.17.6-1
Linux1 product
  • linux≥ 48473802506d2d6151f59e0e764932b33b53cb3b, < c36785f9de03df56ff9b8eca30fa681a12b2310d | ≥ 48473802506d2d6151f59e0e764932b33b53cb3b, < 5416e89b81b00443cb03c88df8da097ae091a141 | ≥ 48473802506d2d6151f59e0e764932b33b53cb3b, < c5a2791a7f11939f05f95c01f0aec0c55bbf28d5 | ≥ 48473802506d2d6151f59e0e764932b33b53cb3b, < 3cf0b3c243e56bc43be560617416c1d9f301f44c | 920e849b7d23ced84c9d11e11e2449e34973cfb8 | e83b4e1540469babeffcfd44a605cf8a61542598 | ≥ 5.15.54, < 5.16 | ≥ 5.17.6, < 5.18 | 5.18

3 vendors · 144 products

References

24 links
Show all 24 references