cve-2021-46904
Vulnerability from cvelistv5
Published
2024-02-25 14:03
Modified
2024-08-04 05:17
Severity
Summary
net: hso: fix null-ptr-deref during tty device unregistration
References
SourceURLTags
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/145c89c441d27696961752bf51b323f347601beePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/388d05f70f1ee0cac4a2068fd295072f1a44152aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4a2933c88399c0ebc738db39bbce3ae89786d723Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8a12f8836145ffe37e9c8733dce18c22fb668b66Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/92028d7a31e55d53e41cff679156b9432cffcb36Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a462067d7c8e6953a733bf5ade8db947b1bb5449Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/caf5ac93b3b5d5fac032fc11fbea680e115421b4Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dc195928d7e4ec7b5cfc6cd10dc4c8d87a7c72acPatch
Impacted products
VendorProduct
LinuxLinux
LinuxLinux
Show details on NVD website

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But before this assignment, calls to get_free_serial_index()\\nwould return the same minor number.\\n\\nFix this by modifying get_free_serial_index to assign the minor number\\nimmediately after one is found to be and rename it to obtain_minor()\\nto better reflect what it does. Similary, rename set_serial_by_index()\\nto release_minor() and modify it to free up the minor number of the\\ngiven hso_serial. Every obtain_minor() should have corresponding\\nrelease_minor() call.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: net: hso: corrige null-ptr-deref durante la cancelaci\u00f3n del registro del dispositivo tty. M\u00faltiples ttys intentan reclamar el mismo n\u00famero menor, lo que provoca una doble cancelaci\u00f3n del registro del mismo dispositivo. La primera cancelaci\u00f3n del registro se realiza correctamente, pero la siguiente genera un null-ptr-deref. 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