CVE-2025-68816: linux

CVSS: UnknownDeferred
AliasesUBUNTU-CVE-2025-68816DEBIAN-CVE-2025-68816
Published 13-01-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2025-68816 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 13.3% 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
0.23%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 47 · Related 43
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: net/mlx5: fw_tracer, Validate format string parameters Add validation for format string parameters in the firmware tracer to prevent potential security vulnerabilities and crashes from malformed format strings received from firmware. The firmware tracer receives format strings from the device firmware and uses them to format trace messages. Without proper validation, bad firmware could provide format strings with invalid format specifiers (e.g., %s, %p, %n) that could lead to crashes, or other undefined behavior. Add mlx5_tracer_validate_params() to validate that all format specifiers in trace strings are limited to safe integer/hex formats (%x, %d, %i, %u, %llx, %lx, etc.). Reject strings containing other format types that could be used to access arbitrary memory or cause crashes. Invalid format strings are added to the trace output for visibility with "BAD_FORMAT: " prefix.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.23%

Chance of exploitation in the next 30 days

Percentile

13%

Versus all other CVEs

30-day change

+0.03 pp

From 0.21% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.23%

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

Affected systems

Ubuntu152 products
  • linuxAll versions (No fix recorded) | < 5.15.0-173.183 | < 6.8.0-110.110 | < 6.17.0-22.22
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 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)
Debian1 product
  • linux< 6.1.162-1 | < 6.12.69-1 | < 6.18.3-1
Linux1 product
  • linux≥ 70dd6fdb8987b14f7b6105f6be0617299e459398, < 95624b731c490a4b849844269193a233d6d556a0 | ≥ 70dd6fdb8987b14f7b6105f6be0617299e459398, < 768d559f466cdd72849110a7ecd76a21d52dcfe3 | ≥ 70dd6fdb8987b14f7b6105f6be0617299e459398, < 38ac688b52ef26a88f8bc4fe26d24fdd0ff91e5d | ≥ 70dd6fdb8987b14f7b6105f6be0617299e459398, < 8ac688c0e430dab19f6a9b70df94b1f635612c1a | ≥ 70dd6fdb8987b14f7b6105f6be0617299e459398, < 45bd283b1d69e2c97cddcb9956f0e0261fc4efd7 | ≥ 70dd6fdb8987b14f7b6105f6be0617299e459398, < 8c35c2448086870509ede43947845be0833251f0 | ≥ 70dd6fdb8987b14f7b6105f6be0617299e459398, < b35966042d20b14e2d83330049f77deec5229749 | 4.19

3 vendors · 154 products

References

44 links
Show all 44 references