In the Linux kernel, the following vulnerability has been resolved: smb/client: fix out-of-bounds read in symlink_data() Since smb2_check_message() returns success without length validation for the symlink error response, in symlink_data() it is possible for iov->iov_len to be smaller than sizeof(struct smb2_err_rsp). If the buffer only contains the base SMB2 header (64 bytes), accessing err->ErrorContextCount (at offset 66) or err->ByteCount later in symlink_data() will cause an out-of-bounds read.
| Version | Score | Severity | Vector String |
|---|---|---|---|
| 3.1 | 9.1 | Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
| Product | Vendor | Version |
|---|---|---|
| Linux | Linux | x64-based Systems Service Pack 1 |
| Linux | Linux | 10 Version 1709 for x64-based Systems |
| Linux | Linux | 10 Version 1709 for ARM64-based Systems |
| Linux | Linux | SoMachine Basic prior to v1.6 SP1 |