Kernel crash via zero-length pinmux dereference
Published Jun 26, 2026 · Updated Jun 26, 2026
NULL pointer dereference in the Linux Kernel pinctrl parser allows local users to crash the kernel through an empty Device Tree pinmux property. pinconf_generic_parse_dt_pinmux() treats the allocator's non-NULL zero-size sentinel as a valid array after accepting a zero-length property and dereferences its first element. Reachability requires local low-privileged access and a Device Tree path that parses the malformed property; the bounded consequence is a kernel crash.
Summary
What happened
NULL pointer dereference in the Linux Kernel pinctrl parser allows local users to crash the kernel through an empty Device Tree pinmux property. pinconf_generic_parse_dt_pinmux() treats the allocator's non-NULL zero-size sentinel as a valid array after accepting a zero-length property and dereferences its first element. Reachability requires local low-privileged access and a Device Tree path that parses the malformed property; the bounded consequence is a kernel crash.
The record
- CVE
- CVE-2026-53307
- Published
- Jun 26, 2026
- Updated
- Jun 26, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux Kernel
- Classifications
- CWE-476, T1499
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 26, 2026CVE publishedPublication date reported by the CVE source.
- Jun 26, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=6.15
- Affected versionversion=7112c05fff83e15726dd60a10248b76474e3cdf9 <6476aac13805721e16439bd71f0e1703a4154517
- Affected versionversion=7112c05fff83e15726dd60a10248b76474e3cdf9 <b7842b722169359e7ffe4b838d2496e9e72ac996
- Affected versionversion=7112c05fff83e15726dd60a10248b76474e3cdf9 <c98324ea7849b6e5baa1774f71709b375a2c2f9e
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
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Public exploit references
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Technologies
Your stack
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Your stack
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