CVE-2026-68130: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: ksmbd: defer destroy_previous_session() until after NTLM authentication In ntlm_authenticate(), destroy_previous_session() is called using a user pointer resolved from the client-supplied NTLM blob username field before the NTLMv2 response is validated. An authenticated attacker can set the NTLM blob username to match a victim account and set PreviousSessionId to the victim's session ID; destroy_previous_session() destroys the victim's session while ksmbd_decode_ntlmssp_auth_blob() subsequently rejects the request with -EPERM. Move destroy_previous_session() and the prev_id assignment to after ksmbd_decode_ntlmssp_auth_blob() returns success and use sess->user rather than the pre-authentication lookup result. This matches the ordering already used by krb5_authenticate(), where destroy_previous_session() is called only after ksmbd_krb5_authenticate() returns success.

Засегнати продукти

• Linux Linux: e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 преди ab0230257ebdf48b07eaa679a8c92bc842fe3498; e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 преди 370b0ec8822b69c9073265e16b7daaa8201c9a4f; e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 преди 5c833074b549e5db125436a6f681af682261f785; e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 преди 243f1614ef2aca2d62a744575f1c24b07cd42757; e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 преди 18705cace0619fd2123737dcd028147774f38181; e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 преди 0ff12308c8a6c16ab68f0a487ffa93d69001dc18; e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 преди c74801ee524f477c174a1899782b6c3b6918d407
• Linux Linux: 5.15; преди 5.15; 5.15.217 до 5.15.*; 6.1.183 до 6.1.*; 6.6.148 до 6.6.*; 6.12.101 до 6.12.*; 6.18.42 до 6.18.*; 7.1.6 до 7.1.*; от 7.2 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-68130
• https://nvd.nist.gov/vuln/detail/CVE-2026-68130
• https://git.kernel.org/stable/c/ab0230257ebdf48b07eaa679a8c92bc842fe3498
• https://git.kernel.org/stable/c/370b0ec8822b69c9073265e16b7daaa8201c9a4f
• https://git.kernel.org/stable/c/5c833074b549e5db125436a6f681af682261f785
• https://git.kernel.org/stable/c/243f1614ef2aca2d62a744575f1c24b07cd42757
• https://git.kernel.org/stable/c/18705cace0619fd2123737dcd028147774f38181
• https://git.kernel.org/stable/c/0ff12308c8a6c16ab68f0a487ffa93d69001dc18
• https://git.kernel.org/stable/c/c74801ee524f477c174a1899782b6c3b6918d407