7.8
HIGH
CVSS 3.1
CVE-2026-72314
regulator: core: regulator_lock_two() should test for EDEADLK not EDEADLOCK
Overview
Description
In the Linux kernel, the following vulnerability has been resolved: regulator: core: regulator_lock_two() should test for EDEADLK not EDEADLOCK Compare against -EDEADLK, which is what ww_mutex_lock() actually returns and what every other deadlock check in this file already uses. Function regulator_lock_two() acquires two regulators via regulator_lock_nested() -> ww_mutex_lock(). On contention, ww_mutex_lock() returns -EDEADLK, which is the caller's signal to drop the lock it holds and retry the acquisition in the canonical order. However, regulator_lock_two() tests the return value against -EDEADLOCK rather than -EDEADLK. On most architectures, EDEADLK and EDEADLOCK are the same value, so the comparison happens to be correct and the bug is invisible. But on MIPS, SPARC, and PowerPC, those two errors have different values. The test is wrong: a genuine -EDEADLK backoff no longer matches -EDEADLOCK, so instead of unlocking and retrying, the code falls into WARN_ON(ret) and returns with only one of the two regulators locked. In practice, this is a bug only on MIPS, because the regulator core is not built or used on the other two platforms. In general, EDEADLK is preferred over EDEADLOCK for new code.
Details
INFO
Published Date :
Aug. 15, 2026, 6:22 a.m.
Last Modified :
Aug. 17, 2026, 6:18 a.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
Update the Linux kernel to correct regulator lock handling and prevent partial lock acquisition.
- Update the Linux kernel to the latest version.
- Ensure regulator lock comparisons use EDEADLK.
- Test regulator lock behavior on affected architectures.
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-2026-72314.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72314 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-2026-72314
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-2026-72314 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72314 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. 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': '06140d6dfe720d80566f792b4e28a9cd60a67970', 'lessThan': 'dc804f390fddd9c389edf0976356942e16878d8f', 'versionType': 'git'}, {'status': 'affected', 'version': '1e3056b8067c2e9b7741c4e588f0acacbe4bdafc', 'lessThan': '8e39aa63798ea0a797fd9341419f12ef91df3238', 'versionType': 'git'}, {'status': 'affected', 'version': '849ab4cf182b38e562ffcc1b494d510e948822dd', 'lessThan': '0c305eac40470a224671858a215963b070f9b2a9', 'versionType': 'git'}, {'status': 'affected', 'version': 'cba6cfdc7c3f1516f0d08ddfb24e689af0932573', 'lessThan': '29a7953e9adea6c7f9e64947745b79158e7cea7f', 'versionType': 'git'}, {'status': 'affected', 'version': 'cba6cfdc7c3f1516f0d08ddfb24e689af0932573', 'lessThan': 'e2063307ea3b6da74585129ba7b588e8243e2ef0', 'versionType': 'git'}, {'status': 'affected', 'version': 'cba6cfdc7c3f1516f0d08ddfb24e689af0932573', 'lessThan': '346e2d666a29ae7233c56b356a0487eb1d42589b', 'versionType': 'git'}, {'status': 'affected', 'version': 'cba6cfdc7c3f1516f0d08ddfb24e689af0932573', 'lessThan': '153d1b8b5bc30847eb70ad535f62f289aa9217e6', 'versionType': 'git'}, {'status': 'affected', 'version': 'cba6cfdc7c3f1516f0d08ddfb24e689af0932573', 'lessThan': 'd38f8bd771c4999b797d7074b348cf201414bd34', 'versionType': 'git'}, {'status': 'affected', 'version': '5224ea575196db11c0a909a78ea426ccdb92f064', 'versionType': 'git'}, {'status': 'affected', 'version': '435c65af581a61ca249bd8f717c3a147dc119f11', 'versionType': 'git'}, {'status': 'affected', 'version': 'cdc042430ea9e07f77ce05a9d29e227dbdecc733', 'versionType': 'git'}, {'status': 'affected', 'version': '5.10.180', 'lessThan': '5.10.261', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.15.111', 'lessThan': '5.15.212', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.1.28', 'lessThan': '6.1.178', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.4.243', 'lessThan': '5.5', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.2.15', 'lessThan': '6.3', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.3.2', 'lessThan': '6.4', 'versionType': 'semver'}], 'programFiles': ['drivers/regulator/core.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.4'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.4', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc3', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/regulator/core.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '06140d6dfe720d80566f792b4e28a9cd60a67970', 'lessThan': 'dc804f390fddd9c389edf0976356942e16878d8f', 'versionType': 'git'}, {'status': 'affected', 'version': '1e3056b8067c2e9b7741c4e588f0acacbe4bdafc', 'lessThan': '8e39aa63798ea0a797fd9341419f12ef91df3238', 'versionType': 'git'}, {'status': 'affected', 'version': '849ab4cf182b38e562ffcc1b494d510e948822dd', 'lessThan': '0c305eac40470a224671858a215963b070f9b2a9', 'versionType': 'git'}, {'status': 'affected', 'version': 'cba6cfdc7c3f1516f0d08ddfb24e689af0932573', 'lessThan': '29a7953e9adea6c7f9e64947745b79158e7cea7f', 'versionType': 'git'}, {'status': 'affected', 'version': 'cba6cfdc7c3f1516f0d08ddfb24e689af0932573', 'lessThan': 'e2063307ea3b6da74585129ba7b588e8243e2ef0', 'versionType': 'git'}, {'status': 'affected', 'version': 'cba6cfdc7c3f1516f0d08ddfb24e689af0932573', 'lessThan': '346e2d666a29ae7233c56b356a0487eb1d42589b', 'versionType': 'git'}, {'status': 'affected', 'version': 'cba6cfdc7c3f1516f0d08ddfb24e689af0932573', 'lessThan': '153d1b8b5bc30847eb70ad535f62f289aa9217e6', 'versionType': 'git'}, {'status': 'affected', 'version': 'cba6cfdc7c3f1516f0d08ddfb24e689af0932573', 'lessThan': 'd38f8bd771c4999b797d7074b348cf201414bd34', 'versionType': 'git'}, {'status': 'affected', 'version': '5224ea575196db11c0a909a78ea426ccdb92f064', 'versionType': 'git'}, {'status': 'affected', 'version': '435c65af581a61ca249bd8f717c3a147dc119f11', 'versionType': 'git'}, {'status': 'affected', 'version': 'cdc042430ea9e07f77ce05a9d29e227dbdecc733', 'versionType': 'git'}, {'status': 'affected', 'version': '5.10.180', 'lessThan': '5.10.261', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.15.111', 'lessThan': '5.15.212', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.1.28', 'lessThan': '6.1.178', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.4.243', 'lessThan': '5.5', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.2.15', 'lessThan': '6.3', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.3.2', 'lessThan': '6.4', 'versionType': 'semver'}], 'programFiles': ['drivers/regulator/core.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.4'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.4', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/regulator/core.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': '06140d6dfe720d80566f792b4e28a9cd60a67970', 'lessThan': 'dc804f390fddd9c389edf0976356942e16878d8f', 'versionType': 'git'}, {'status': 'affected', 'version': '1e3056b8067c2e9b7741c4e588f0acacbe4bdafc', 'lessThan': '8e39aa63798ea0a797fd9341419f12ef91df3238', 'versionType': 'git'}, {'status': 'affected', 'version': '849ab4cf182b38e562ffcc1b494d510e948822dd', 'lessThan': '0c305eac40470a224671858a215963b070f9b2a9', 'versionType': 'git'}, {'status': 'affected', 'version': 'cba6cfdc7c3f1516f0d08ddfb24e689af0932573', 'lessThan': '29a7953e9adea6c7f9e64947745b79158e7cea7f', 'versionType': 'git'}, {'status': 'affected', 'version': 'cba6cfdc7c3f1516f0d08ddfb24e689af0932573', 'lessThan': 'e2063307ea3b6da74585129ba7b588e8243e2ef0', 'versionType': 'git'}, {'status': 'affected', 'version': 'cba6cfdc7c3f1516f0d08ddfb24e689af0932573', 'lessThan': '346e2d666a29ae7233c56b356a0487eb1d42589b', 'versionType': 'git'}, {'status': 'affected', 'version': 'cba6cfdc7c3f1516f0d08ddfb24e689af0932573', 'lessThan': '153d1b8b5bc30847eb70ad535f62f289aa9217e6', 'versionType': 'git'}, {'status': 'affected', 'version': 'cba6cfdc7c3f1516f0d08ddfb24e689af0932573', 'lessThan': 'd38f8bd771c4999b797d7074b348cf201414bd34', 'versionType': 'git'}, {'status': 'affected', 'version': '5224ea575196db11c0a909a78ea426ccdb92f064', 'versionType': 'git'}, {'status': 'affected', 'version': '435c65af581a61ca249bd8f717c3a147dc119f11', 'versionType': 'git'}, {'status': 'affected', 'version': 'cdc042430ea9e07f77ce05a9d29e227dbdecc733', 'versionType': 'git'}, {'status': 'affected', 'version': '5.10.180', 'lessThan': '5.10.261', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.15.111', 'lessThan': '5.15.212', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.1.28', 'lessThan': '6.1.178', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.4.243', 'lessThan': '5.5', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.2.15', 'lessThan': '6.3', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.3.2', 'lessThan': '6.4', 'versionType': 'semver'}], 'programFiles': ['drivers/regulator/core.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.4'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.4', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc3', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/regulator/core.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: regulator: core: regulator_lock_two() should test for EDEADLK not EDEADLOCK Compare against -EDEADLK, which is what ww_mutex_lock() actually returns and what every other deadlock check in this file already uses. Function regulator_lock_two() acquires two regulators via regulator_lock_nested() -> ww_mutex_lock(). On contention, ww_mutex_lock() returns -EDEADLK, which is the caller's signal to drop the lock it holds and retry the acquisition in the canonical order. However, regulator_lock_two() tests the return value against -EDEADLOCK rather than -EDEADLK. On most architectures, EDEADLK and EDEADLOCK are the same value, so the comparison happens to be correct and the bug is invisible. But on MIPS, SPARC, and PowerPC, those two errors have different values. The test is wrong: a genuine -EDEADLK backoff no longer matches -EDEADLOCK, so instead of unlocking and retrying, the code falls into WARN_ON(ret) and returns with only one of the two regulators locked. In practice, this is a bug only on MIPS, because the regulator core is not built or used on the other two platforms. In general, EDEADLK is preferred over EDEADLOCK for new code. Added Reference https://git.kernel.org/stable/c/0c305eac40470a224671858a215963b070f9b2a9 Added Reference https://git.kernel.org/stable/c/153d1b8b5bc30847eb70ad535f62f289aa9217e6 Added Reference https://git.kernel.org/stable/c/29a7953e9adea6c7f9e64947745b79158e7cea7f Added Reference https://git.kernel.org/stable/c/346e2d666a29ae7233c56b356a0487eb1d42589b Added Reference https://git.kernel.org/stable/c/8e39aa63798ea0a797fd9341419f12ef91df3238 Added Reference https://git.kernel.org/stable/c/d38f8bd771c4999b797d7074b348cf201414bd34 Added Reference https://git.kernel.org/stable/c/dc804f390fddd9c389edf0976356942e16878d8f Added Reference https://git.kernel.org/stable/c/e2063307ea3b6da74585129ba7b588e8243e2ef0
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.