CVE-2024-56729

In the Linux kernel, the following vulnerability has been resolved: smb: Initialize cfid->tcon before performing network ops Avoid leaking a tcon ref when a lease break races with opening the cached directory. Processing the leak break might take a reference to the tcon in cached_dir_lease_break() and then fail to release the ref in cached_dir_offload_close, since cfid->tcon is still NULL.

CVSS v3 4.7 MEDIUM

4.7^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.0 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/1b9ab6b648f89441c8a13cb3fd8ca83ffebc5262	Patch
https://git.kernel.org/stable/c/269ff24a5b2b58600151e04e964d2043bfe1843c
https://git.kernel.org/stable/c/4b216c8f9c7d84ef7de33ca60b97e08e03ef3292	Patch
https://git.kernel.org/stable/c/625e2357c8fcfae6e66dcc667dc656fe390bab15	Patch
https://git.kernel.org/stable/c/c353ee4fb119a2582d0e011f66a76a38f5cf984d	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

30 Oct 2026, 13:17

Type	Values Removed	Values Added
References		() https://git.kernel.org/stable/c/269ff24a5b2b58600151e04e964d2043bfe1843c -

Information

Published : 2024-12-29 12:15

Updated : 2026-10-30 13:17

NVD link : CVE-2024-56729

Mitre link : CVE-2024-56729

CVE.ORG link : CVE-2024-56729

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-401

Missing Release of Memory after Effective Lifetime

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Processing the leak break might take a reference to\nthe tcon in cached_dir_lease_break() and then fail to release the ref in\ncached_dir_offload_close, since cfid->tcon is still NULL."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: smb: inicializar cfid->tcon antes de realizar operaciones de red Evitar la fuga de una referencia tcon cuando una interrupci\u00f3n de arrendamiento se ejecuta con la apertura del directorio en cach\u00e9. El procesamiento de la interrupci\u00f3n de la fuga puede tomar una referencia al tcon en cached_dir_lease_break() y luego no liberar la referencia en cached_dir_offload_close, ya que cfid->tcon sigue siendo NULL."}], "lastModified": "2026-10-30T13:17:48.570", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7081676E-4D8A-48BF-AAF4-73B8F49078AE", "versionEndExcluding": "6.6.64", "versionStartIncluding": "6.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "21434379-192D-472F-9B54-D45E3650E893", "versionEndExcluding": "6.11.11", "versionStartIncluding": "6.7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D8882B1B-2ABC-4838-AC1D-DBDBB5764776", "versionEndExcluding": "6.12.2", "versionStartIncluding": "6.12"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}