27 matches found
CVE-2026-68100
A flaw was found in ksmbd in the Linux kernel. An authenticated client can provide a crafted security descriptor that is not properly validated when copying Access Control Entries ACEs in the setntacldacl function. This improper validation leads to an out-of-bounds heap read, allowing the client ...
CVE-2026-68097
In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate ACE size against SID sub-authorities setntacldacl validates sid.numsubauth before copying an ACE, but does not verify that the declared ACE size contains all sub-authorities described by that field. An undersized...
CVE-2026-68100
The CVE-2026-68100 issue affects ksmbd in the Linux kernel. A flaw in set_ntacl_dacl() copies ACEs from an attacker-controlled security descriptor without validating sid.num_subauth, allowing an authenticated SMB2 client to trigger an out-of-bounds heap read (~1 KB) when building a POSIX ACL in a...
CVE-2026-68097 ksmbd: validate ACE size against SID sub-authorities
In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate ACE size against SID sub-authorities setntacldacl validates sid.numsubauth before copying an ACE, but does not verify that the declared ACE size contains all sub-authorities described by that field. An undersized...
CVE-2026-53390
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix out-of-bounds read in smbcheckpermdacl The permission-check ACE walk in smbcheckpermdacl validates the ACE header size and caps sid.numsubauth at SIDMAXSUBAUTHORITIES, but it never checks that ace-size is actually larg...
EUVD-2026-45512
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix out-of-bounds read in smbcheckpermdacl The permission-check ACE walk in smbcheckpermdacl validates the ACE header size and caps sid.numsubauth at SIDMAXSUBAUTHORITIES, but it never checks that ace-size is actually larg...
CVE-2026-53390 ksmbd: fix out-of-bounds read in smb_check_perm_dacl()
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix out-of-bounds read in smbcheckpermdacl The permission-check ACE walk in smbcheckpermdacl validates the ACE header size and caps sid.numsubauth at SIDMAXSUBAUTHORITIES, but it never checks that ace-size is actually larg...
PT-2026-61226
Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An out-of-bounds read exists in the smb check perm dacl function within the ksmbd module. This issue occurs during ACE-walk loops when a transposed bounds check fails to properly validat...
Astra Linux – Vulnerability in Linux 5.10
In the Linux kernel, the following vulnerability has been resolved: ksmbd: Use checkaddoverflow to prevent overflow of the u16 DACL size. The functions setposixaclentriesdacl and setntacldacl accumulate the ACE sizes in u16 variables. When a file has many POSIX ACL entries, the accumulated size c...
CVE-2026-43350
In the Linux kernel, the following vulnerability has been resolved: smb: client: require a full NFS mode SID before reading mode bits parsedacl treats an ACE SID matching sidunixNFSmode as an NFS mode SID and reads sid.subauth2 to recover the mode bits. That assumes the ACE carries three...
CVE-2026-43350 smb: client: require a full NFS mode SID before reading mode bits
In the Linux kernel, the following vulnerability has been resolved: smb: client: require a full NFS mode SID before reading mode bits parsedacl treats an ACE SID matching sidunixNFSmode as an NFS mode SID and reads sid.subauth2 to recover the mode bits. That assumes the ACE carries three...
CVE-2026-43350
In the Linux kernel, the following vulnerability has been resolved: smb: client: require a full NFS mode SID before reading mode bits parsedacl treats an ACE SID matching sidunixNFSmode as an NFS mode SID and reads sid.subauth2 to recover the mode bits. That assumes the ACE carries three...
CVE-2026-43350
In the Linux kernel, a vulnerability in the SMB client path can allow a malicious server to exploit an ACE with sid_unix_NFS_mode by providing an ACE with only two subauthorities. parse_dacl() would treat this as an NFS mode SID and read sub_auth[2], potentially reading four bytes past the end of...
PT-2026-39001
Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A flaw exists in the SMB client where the parse dacl function incorrectly handles Access Control Entry ACE SIDs. The function treats an ACE SID matching sid unix NFS mode as an NFS mode...
CVE-2026-31712
In the Linux kernel, the following vulnerability has been resolved: ksmbd: require minimum ACE size in smbcheckpermdacl Both ACE-walk loops in smbcheckpermdacl only guard against an under-sized remaining buffer, not against an ACE whose declared ace-size is smaller than the struct it claims to...
CVE-2026-31712 ksmbd: require minimum ACE size in smb_check_perm_dacl()
In the Linux kernel, the following vulnerability has been resolved: ksmbd: require minimum ACE size in smbcheckpermdacl Both ACE-walk loops in smbcheckpermdacl only guard against an under-sized remaining buffer, not against an ACE whose declared ace-size is smaller than the struct it claims to...
Linux kernel 安全漏洞
Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. The Linux kernel suffers from an out-of-bounds read vulnerability. The vulnerability stems from insufficient ACE size validation in the smbcheckpermdacl function of ksmbd, whic...
PT-2026-36339
Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the SMB client where the system fails to fully validate the Discretionary Access Control List DACL before rewriting it in cifsacl. The functions build sec desc and id...