ALT-PU-2023-8591-4

Package update kernel-image-un-def in branch sisyphus

Version6.4.15-alt1

Published2026-10-14

Max severityCRITICAL

Severity:

Closed issues (4)

CRITICAL10.0

Уязвимость функции ksmbd_decode_ntlmssp_auth_blob() модуля ksmbd ядра операционных систем Linux, позволяющая нарушителю выполнить произвольный код

Published: 2024-02-28Modified: 2025-10-23

CVSS 3.xCRITICAL 10.0

CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS 2.0CRITICAL 10.0

CVSS:2.0/AV:N/AC:L/Au:N/C:C/I:C/A:C

References

MEDIUM4.0

Уязвимость функции smb2_find_context_vals модуля fs/smb/server/oplock.c подсистемы SMB ядра операционной системы Linux, позволяющая удаленному нарушителю получить доступ к защищаемой информации

Published: 2025-12-07Modified: 2026-10-07

CVSS 3.xMEDIUM 4.0

CVSS:3.x/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N

CVSS 2.0LOW 2.6

CVSS:2.0/AV:N/AC:H/Au:N/C:P/I:N/A:N

References

HIGH7.5

A flaw was found within the parsing of extended attributes in the kernel ksmbd module. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this to disclose sensitive information on affected installations of Linux. Only systems with ksmbd enabled are vulnerable to this CVE.

Published: 2024-11-14Modified: 2026-10-02

CVSS 3.xHIGH 7.5

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

HIGH7.8

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix slub overflow in ksmbd_decode_ntlmssp_auth_blob() If authblob->SessionKey.Length is bigger than session key size(CIFS_KEY_SIZE), slub overflow can happen in key exchange codes. cifs_arc4_crypt copy to session key array from SessionKey from client.

Published: 2024-02-21Modified: 2026-08-15

CVSS 3.xHIGH 7.8

CVSS:3.x/CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References