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Linux Kernel CVE-2026-72314

| EUVDEUVD-2026-59213 HIGH
2026-08-15 Linux GHSA-g74q-qxv8-58hq
High
Disputed · 7.8 Vendor: Linux
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Severity by source

Sources disagree (Low–High)
Vendor (Linux) PRIMARY
7.8 HIGH
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
vuln.today AI
7.0 HIGH

Race-condition timing on MIPS-only path makes AC:H; PR:L required for local trigger; full kernel impact justified by corrupted locking state.

3.1 AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
4.0 AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SUSE
2.5 MEDIUM
AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
Red Hat
5.5 LOW
qualitative

vuln.today treats the vendor’s rating as authoritative. A higher third-party CVSS (e.g. CISA-ADP) is shown for transparency but does not drive the headline severity.

CVSS VectorVendor: Linux

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

5
Analysis Generated
Aug 17, 2026 - 08:22 vuln.today
CVSS changed
Aug 17, 2026 - 06:22 NVD
7.8 (HIGH)
Patch available
Aug 15, 2026 - 07:20 EUVD
CVE Published
Aug 15, 2026 - 05:55 cve.org
HIGH 7.8
CVE Published
Aug 15, 2026 - 05:55 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

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.

AnalysisAI

The regulator subsystem in the Linux kernel contains a deadlock-handling defect where regulator_lock_two() compares the return value of ww_mutex_lock() against -EDEADLOCK instead of the correct -EDEADLK constant. On MIPS architecture - the only platform where the regulator core is active and these two error constants carry different numeric values - the mismatch causes the kernel to skip the mandatory unlock-and-retry backoff sequence, fire WARN_ON, and return to the caller with only one of the two regulators locked, producing corrupted locking state. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Persist
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Vulnerability AssessmentAI

Exploitation Exploitation requires a MIPS-architecture Linux kernel with the regulator subsystem compiled in (CONFIG_REGULATOR enabled) - the bug is latent and non-exploitable on x86, ARM, SPARC, and PowerPC. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 score of 7.8 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) is architecturally justified but practically narrower than the raw number implies: the functional impact is confined to MIPS-architecture Linux systems where the regulator subsystem is active, a subset of the broader Linux deployment universe. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation The primary fix is upgrading to a patched Linux kernel stable release: 5.10.261, 5.15.212, 6.1.178, 6.6.145, 6.12.97, 6.18.40, or development branch 7.1.5 and later. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, audit infrastructure inventory to identify any systems running Linux on MIPS architecture-typically embedded systems, networking equipment, and specialized appliances. …

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Threat intelligence, references, and detailed analysis are available after sign-in.

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Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise High Availability Extension 15 SP7 Affected
SUSE Linux Enterprise High Availability Extension 15 SP7 Affected
SUSE Linux Enterprise High Availability Extension 16.0 Not-Affected

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CVE-2026-72314 vulnerability details – vuln.today

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