7.8
HIGH
CVSS 3.1
CVE-2026-74471
tracing: Check return value of __register_event() in trace_module_add_events()
Overview
Description
In the Linux kernel, the following vulnerability has been resolved: tracing: Check return value of __register_event() in trace_module_add_events() trace_module_add_events() ignores the return value of __register_event() and unconditionally calls __add_event_to_tracers() for each event. If __register_event() fails (for example, if event_init() fails), the trace_event_call is not added to ftrace_events list, but __add_event_to_tracers() still creates a trace_event_file pointing to it. If module loading subsequently fails and module memory is freed, tracing state retains a stale trace_event_call pointer in trace_event_file, leading to a use-after-free when tracefs or tracing subsystem operations are later executed. Fix this by checking the return value of __register_event() and only calling __add_event_to_tracers() if event registration succeeded.
Details
INFO
Published Date :
Aug. 15, 2026, 1:17 p.m.
Last Modified :
Aug. 19, 2026, 5:21 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework
for assessing the severity of vulnerabilities in software and systems.
We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
Apply the kernel patch to check registration success before adding trace events.
- Apply the Linux kernel patch.
- Verify event registration success.
- Ensure tracing subsystem operates correctly.
References
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-74471.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-74471 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-74471
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-74471 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-74471 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 19, 2026
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/3bf965a2827c44f03294107703e7ba53fbd0a69a Added Reference https://git.kernel.org/stable/c/54b7a358f6399c1242d2fb7f4f96085af34baa5e Added Reference https://git.kernel.org/stable/c/9d6d79744f01eacaf3d5522f4fcd59939581abfd Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'ae63b31e4d0e2ec09c569306ea46f664508ef717', 'lessThan': 'd61ee2a27dfd5eb43ddc18af40168f5b9eb1cea5', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae63b31e4d0e2ec09c569306ea46f664508ef717', 'lessThan': '22f954f7a8afe975e85517aff41b35defe05144b', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae63b31e4d0e2ec09c569306ea46f664508ef717', 'lessThan': 'cbb5ed3be9cae70e1c12b1991009b4e12bf4a4ca', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae63b31e4d0e2ec09c569306ea46f664508ef717', 'lessThan': '000765dcdc3edf128990762790543adc4b868f6c', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae63b31e4d0e2ec09c569306ea46f664508ef717', 'lessThan': 'ac8719969e6c3c54e939834df812bc41f25453cf', 'versionType': 'git'}], 'programFiles': ['kernel/trace/trace_events.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.10'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.10', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.151', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['kernel/trace/trace_events.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'ae63b31e4d0e2ec09c569306ea46f664508ef717', 'lessThan': '3bf965a2827c44f03294107703e7ba53fbd0a69a', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae63b31e4d0e2ec09c569306ea46f664508ef717', 'lessThan': '9d6d79744f01eacaf3d5522f4fcd59939581abfd', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae63b31e4d0e2ec09c569306ea46f664508ef717', 'lessThan': '54b7a358f6399c1242d2fb7f4f96085af34baa5e', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae63b31e4d0e2ec09c569306ea46f664508ef717', 'lessThan': 'd61ee2a27dfd5eb43ddc18af40168f5b9eb1cea5', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae63b31e4d0e2ec09c569306ea46f664508ef717', 'lessThan': '22f954f7a8afe975e85517aff41b35defe05144b', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae63b31e4d0e2ec09c569306ea46f664508ef717', 'lessThan': 'cbb5ed3be9cae70e1c12b1991009b4e12bf4a4ca', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae63b31e4d0e2ec09c569306ea46f664508ef717', 'lessThan': '000765dcdc3edf128990762790543adc4b868f6c', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae63b31e4d0e2ec09c569306ea46f664508ef717', 'lessThan': 'ac8719969e6c3c54e939834df812bc41f25453cf', 'versionType': 'git'}], 'programFiles': ['kernel/trace/trace_events.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.10'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.10', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.265', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.216', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.183', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.151', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['kernel/trace/trace_events.c'], 'defaultStatus': 'affected'}] -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'ae63b31e4d0e2ec09c569306ea46f664508ef717', 'lessThan': 'd61ee2a27dfd5eb43ddc18af40168f5b9eb1cea5', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae63b31e4d0e2ec09c569306ea46f664508ef717', 'lessThan': '22f954f7a8afe975e85517aff41b35defe05144b', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae63b31e4d0e2ec09c569306ea46f664508ef717', 'lessThan': 'cbb5ed3be9cae70e1c12b1991009b4e12bf4a4ca', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae63b31e4d0e2ec09c569306ea46f664508ef717', 'lessThan': '000765dcdc3edf128990762790543adc4b868f6c', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae63b31e4d0e2ec09c569306ea46f664508ef717', 'lessThan': 'ac8719969e6c3c54e939834df812bc41f25453cf', 'versionType': 'git'}], 'programFiles': ['kernel/trace/trace_events.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.10'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.10', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.151', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc6', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['kernel/trace/trace_events.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'ae63b31e4d0e2ec09c569306ea46f664508ef717', 'lessThan': 'd61ee2a27dfd5eb43ddc18af40168f5b9eb1cea5', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae63b31e4d0e2ec09c569306ea46f664508ef717', 'lessThan': '22f954f7a8afe975e85517aff41b35defe05144b', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae63b31e4d0e2ec09c569306ea46f664508ef717', 'lessThan': 'cbb5ed3be9cae70e1c12b1991009b4e12bf4a4ca', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae63b31e4d0e2ec09c569306ea46f664508ef717', 'lessThan': '000765dcdc3edf128990762790543adc4b868f6c', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae63b31e4d0e2ec09c569306ea46f664508ef717', 'lessThan': 'ac8719969e6c3c54e939834df812bc41f25453cf', 'versionType': 'git'}], 'programFiles': ['kernel/trace/trace_events.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.10'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.10', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.151', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['kernel/trace/trace_events.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 15, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'ae63b31e4d0e2ec09c569306ea46f664508ef717', 'lessThan': 'd61ee2a27dfd5eb43ddc18af40168f5b9eb1cea5', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae63b31e4d0e2ec09c569306ea46f664508ef717', 'lessThan': '22f954f7a8afe975e85517aff41b35defe05144b', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae63b31e4d0e2ec09c569306ea46f664508ef717', 'lessThan': 'cbb5ed3be9cae70e1c12b1991009b4e12bf4a4ca', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae63b31e4d0e2ec09c569306ea46f664508ef717', 'lessThan': '000765dcdc3edf128990762790543adc4b868f6c', 'versionType': 'git'}, {'status': 'affected', 'version': 'ae63b31e4d0e2ec09c569306ea46f664508ef717', 'lessThan': 'ac8719969e6c3c54e939834df812bc41f25453cf', 'versionType': 'git'}], 'programFiles': ['kernel/trace/trace_events.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.10'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.10', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.151', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.103', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.44', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.8', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc6', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['kernel/trace/trace_events.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: tracing: Check return value of __register_event() in trace_module_add_events() trace_module_add_events() ignores the return value of __register_event() and unconditionally calls __add_event_to_tracers() for each event. If __register_event() fails (for example, if event_init() fails), the trace_event_call is not added to ftrace_events list, but __add_event_to_tracers() still creates a trace_event_file pointing to it. If module loading subsequently fails and module memory is freed, tracing state retains a stale trace_event_call pointer in trace_event_file, leading to a use-after-free when tracefs or tracing subsystem operations are later executed. Fix this by checking the return value of __register_event() and only calling __add_event_to_tracers() if event registration succeeded. Added Reference https://git.kernel.org/stable/c/000765dcdc3edf128990762790543adc4b868f6c Added Reference https://git.kernel.org/stable/c/22f954f7a8afe975e85517aff41b35defe05144b Added Reference https://git.kernel.org/stable/c/ac8719969e6c3c54e939834df812bc41f25453cf Added Reference https://git.kernel.org/stable/c/cbb5ed3be9cae70e1c12b1991009b4e12bf4a4ca Added Reference https://git.kernel.org/stable/c/d61ee2a27dfd5eb43ddc18af40168f5b9eb1cea5
EPSS is a daily estimate of the probability of exploitation activity
being observed over the next 30 days. Following chart shows the EPSS
score history of the vulnerability.