Denial of service via premature device release
Published May 1, 2025 · Updated May 11, 2026
Denial of service in affected Linux kernel mISDN versions allows local users to disrupt the kernel through failed device registration. In mISDN_register_device(), a get_free_devid() failure reaches an error path that calls put_device() before device_initialize() initializes the embedded device. The flaw requires local low-privileged access and the mISDN device-registration failure path; the reported consequence is limited to service interruption.
Summary
What happened
Denial of service in affected Linux kernel mISDN versions allows local users to disrupt the kernel through failed device registration. In mISDN_register_device(), a get_free_devid() failure reaches an error path that calls put_device() before device_initialize() initializes the embedded device. The flaw requires local low-privileged access and the mISDN device-registration failure path; the reported consequence is limited to service interruption.
The record
- CVE
- CVE-2022-49818
- Published
- May 1, 2025
- Updated
- May 11, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- T1499.004
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- May 1, 2025CVE publishedPublication date reported by the CVE source.
- May 11, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=029d5b7688a2f3a86f2a3be5a6ba9cc968c80e41 <596230471da3415e92ae6b9d2a4e26f4a81cac5a
- Affected versionversion=080aabfb29b2ee9cbb8894a1d039651943d3773e <81db4f182744acd004f17d7cc52dde9ea53467e6
- Affected versionversion=0d4e91efcaee081e919b3c50e875ecbb84290e41 <87b336aa158201dc30a318431e63e8c5b26c4156
- Affected versionversion=2ff6b669523d3b3d253a044fa9636a67d0694995 <83672c1b83d107b0d4fe0accf1bf64d8988398e6
- Affected versionversion=4.14.299 <4.14.300
- Affected versionversion=4.19.265 <4.19.267
- Affected versionversion=4.9.333 <4.9.334
- Affected versionversion=5.10.154 <5.10.156
- Affected versionversion=5.15.78 <5.15.80
- Affected versionversion=5.4.224 <5.4.225
- Affected versionversion=6.0.8 <6.0.10
- Affected versionversion=a636fc5a7cabd05699b5692ad838c2c7a3abec7b <d40b35a7922f4df3767ad6fb8ef3dc86e31d7ba3
- Affected versionversion=d1d1aede313eb2b9a84afd60ff6cfb7c33631e0e <44658d65f6b3118f595a1229d7eed74845a5e2ac
- Affected versionversion=e77d213843e67b4373285712699b692f9c743f61 <709aa1f73d3e9e9ea16e2c4e44f2874c5d2c382c
- Affected versionversion=e7d1d4d9ac0dfa40be4c2c8abd0731659869b297 <2d25107e111a85c56f601a5470f1780ec054e6ac
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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