CVE-2025-68173: ftrace: Fix softlockup in ftrace_module_enable

Deferred
AliasesUBUNTU-CVE-2025-68173DEBIAN-CVE-2025-68173
Published 16-12-2025Last modified 11-05-2026

Vulnerability summary

CVE-2025-68173 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.20% chance of exploitation in the next 30 days, higher than 10% 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
0.20%
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 22 · Related 19
DLA-4436-1MGASA-2026-0017MGASA-2026-0018OPENSUSE-SU-2026:20416-1SUSE-SU-2026:20838-1SUSE-SU-2026:20873-1

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: ftrace: Fix softlockup in ftrace_module_enable A soft lockup was observed when loading amdgpu module. If a module has a lot of tracable functions, multiple calls to kallsyms_lookup can spend too much time in RCU critical section and with disabled preemption, causing kernel panic. This is the same issue that was fixed in commit d0b24b4e91fc ("ftrace: Prevent RCU stall on PREEMPT_VOLUNTARY kernels") and commit 42ea22e754ba ("ftrace: Add cond_resched() to ftrace_graph_set_hash()"). Fix it the same way by adding cond_resched() in ftrace_module_enable.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.20%

Chance of exploitation in the next 30 days

Percentile

10%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.20% 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.

Ubuntu154 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
  • linux< 6.1.159-1 | < 6.12.63-1 | < 6.17.8-1
Linux1 product
  • linux≥ b7ffffbb46f205e7727a18bcc7a46c3c2b534f7c, < a1dd0abd741a8111260676da729825d6c1461a71 | ≥ b7ffffbb46f205e7727a18bcc7a46c3c2b534f7c, < e81e6d6d99b16dae11adbeda5c996317942a940c | ≥ b7ffffbb46f205e7727a18bcc7a46c3c2b534f7c, < 40c8ee40e48a2c82c762539952ed8fc0571db5bf | ≥ b7ffffbb46f205e7727a18bcc7a46c3c2b534f7c, < 7e3c96010ade29bb340a5bdce8675f50c7f59001 | ≥ b7ffffbb46f205e7727a18bcc7a46c3c2b534f7c, < 4099b98203d6b33d990586542fa5beee408032a3 | 4.5

3 vendors · 156 products

References

24 links
Show all 24 references