{"id":"CVE-2026-98167","published":"2026-10-06T09:17:58.177","lastModified":"2026-10-06T09:17:58.177","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix server->total_read for compound encrypted PDUs\n\nIn receive_encrypted_standard(), server->total_read is left at the\nfull decrypted frame size when walking sub-PDUs of a compound encrypted\nframe. As a result, cifs_handle_standard() passes this full size\nto smb2_check_message(), causing the PDU length guards to incorrectly\nvalidate the entire compound frame instead of the current sub-PDU.\n\nThis allows truncated non-last sub-PDUs to bypass length validation,\nleading to out-of-bounds reads in smb2_get_data_area_len().\n\nFix this by setting server->total_read to the true length of the\ncurrent sub-PDU: next_cmd for non-last sub-PDUs, and the remaining\npdu_length for the last one.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/282b72f9a7ef31296c48366db4128882999cc048","tags":[]},{"url":"https://git.kernel.org/stable/c/8703539d22fdbc13dd2db090ee199c3a427b8ea0","tags":[]},{"url":"https://git.kernel.org/stable/c/a46eb242e9eef3a3897d166748b23303c516e870","tags":[]},{"url":"https://git.kernel.org/stable/c/e78fc1d240b27349b45a0f1c3e3c2c401d7e230d","tags":[]},{"url":"https://git.kernel.org/stable/c/ebb8a075fdc7af3d196a4f158a0e18dbc394c0e3","tags":[]},{"url":"https://git.kernel.org/stable/c/f73726b83e4756fdaa099e1bc1143293bd57ad79","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}