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CVE PROGRAM SOURCE RECORD9.8 Critical

CVE-2026-45972

smb: client: fix potential UAF and double free in smb2_open_file()

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential UAF and double free in smb2_open_file() Zero out @err_iov and @err_buftype before retrying SMB2_open() to prevent an UAF bug if @data != NULL, otherwise a double free.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 743f70406264348c0830f38409eb6c40a42fb2db to < 96e53bb3ee2f354cf6b4ab07bcc56e500f8b3f74affected
  • 3a6d6b332f92990958602c1e35ce0173e2dd62e9 to < 7425453ea16dbc3bbb0f6cac4d60b537e5e4d151affected
  • b64e3b5d8d759dd4333992e4ba4dadf9359952c8 to < 4d339b219004869e96c4ce56b8891f83a38da4c0affected
  • 9ee608a64e37cea5b4b13e436c559dd0fb2ad1b5 to < e66dcf7bb9c4df5582c82bc3582725abcbfbea73affected
  • e3a43633023e3cacaca60d4b8972d084a2b06236 to < 639deb962986ef2f5e2a6d5a600c66f922471e81affected
  • e3a43633023e3cacaca60d4b8972d084a2b06236 to < ebbbc4bfad4cb355d17c671223d0814ee3ef4edaaffected
  • 6.1.163 to < 6.1.165affected
  • 6.6.124 to < 6.6.128affected
  • 6.12.70 to < 6.12.75affected
  • 6.18.10 to < 6.18.14affected

Linux Linux

Default version status: affected

  • 6.19affected
  • 0 to < 6.19unaffected
  • 6.1.165 to ≤ 6.1.*unaffected
  • 6.6.128 to ≤ 6.6.*unaffected
  • 6.12.75 to ≤ 6.12.*unaffected
  • 6.18.14 to ≤ 6.18.*unaffected
  • 6.19.4 to ≤ 6.19.*unaffected
  • 7.0 to ≤ *unaffected

References