libsmb2 through 6.2 contains an integer underflow vulnerability in decode_acl that allows malicious SMB servers to trigger heap out-of-bounds reads vi...

原文の説明

取得元が公開している説明をそのまま載せています (多くは英語)。

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.

出典: OSV.dev (Open Source Vulnerabilities) OSV

影響パッケージ

Ubuntu:26.10 libsmb2

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Ubuntu:26.04:LTS libsmb2

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

参照URL

report ubuntu.com
report cve.org
report github.com
report github.com
report github.com
report hackmd.io
report vulncheck.com