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4 vulnerabilities found for libsmb2 by sahlberg

CVE-2026-115505 (GCVE-0-2026-115505)
Vulnerability from cvelistv5
Published
2026-10-22 19:14
Modified
2026-10-29 12:22
CWE
  • CWE-190 - Integer Overflow or Wraparound
Summary
libsmb2 before 6.3 contains integer overflow vulnerabilities in the DCE/RPC NDR decoder in lib/dcerpc.c that allow heap out-of-bounds reads and writes. A malicious SMB server or machine-in-the-middle on unsigned connections can send crafted NetrShareEnum replies with wrapping actual_count or max_count values when clients call smb2_share_enum_async(), corrupting heap memory.
Impacted products
Vendor Product Version
sahlberg libsmb2 Version: 0   < 6.3
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CVE-2026-110714 (GCVE-0-2026-110714)
Vulnerability from cvelistv5
Published
2026-10-14 15:01
Modified
2026-10-20 01:29
CWE
  • CWE-191 - Integer Underflow (Wrap or Wraparound)
Summary
libsmb2 through 6.2 contains an integer underflow vulnerability in decode_acl that allows malicious SMB servers to trigger heap out-of-bounds reads via crafted security descriptors. Attackers controlling a server or intercepting unsigned sessions can send an AclSize below 8 in a QUERY_INFO reply, bypassing ACE bounds checks and crashing the client.
Impacted products
Vendor Product Version
sahlberg libsmb2 Version: 0   <
Create a notification for this product.
Show details on NVD website


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CVE-2026-110713 (GCVE-0-2026-110713)
Vulnerability from cvelistv5
Published
2026-10-14 15:01
Modified
2026-10-14 19:49
CWE
Summary
libsmb2 through 6.2 contains a heap out-of-bounds read vulnerability in smb2_decode_file_fs_volume_info and smb2_decode_file_fs_attribute_info that allows malicious SMB servers to read past reply buffers. Attackers controlling a server or intercepting unsigned sessions can send crafted QUERY_INFO replies with missing or oversized name lengths to crash the client.
Impacted products
Vendor Product Version
sahlberg libsmb2 Version: 0   <
Create a notification for this product.
Show details on NVD website


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CVE-2026-110712 (GCVE-0-2026-110712)
Vulnerability from cvelistv5
Published
2026-10-14 15:01
Modified
2026-10-14 17:40
CWE
Summary
libsmb2 through 6.2 contains a heap out-of-bounds read vulnerability in smb2_decode_file_all_info that allows malicious SMB servers to crash clients by sending an unchecked FileNameLength. Attackers controlling the server or performing man-in-the-middle on unsigned sessions can return crafted FileAllInformation replies to smb2_stat or smb2_fstat calls, crashing the client.
Impacted products
Vendor Product Version
sahlberg libsmb2 Version: 0   <
Create a notification for this product.
Show details on NVD website


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