CVE-2026-46185
Published: May 29, 2026Last modified: June 24, 2026
Description
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 9.1 |
| Attack Vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.175-r0) |
| 25 LTS | linux-lts | Fixed (6.12.92-r0) | |
| Stream | linux-lts | Fixed (6.18.35-r1) |
References
- https://git.kernel.org/stable/c/15dc0a4de743a1aaa7b859b3aea79f08c695396c
- https://git.kernel.org/stable/c/2be11faf79e49fb8250a181ff0b4d2b2f084af83
- https://git.kernel.org/stable/c/b8c8a704f0bc133deb171f6aeb6f3a684203e212
- https://git.kernel.org/stable/c/b9561402489d41149f63e001a74384863b7b30a6
- https://git.kernel.org/stable/c/d62b8d236fab503c6fec1d3e9a38bea71feaca20
- https://git.kernel.org/stable/c/ef6495d4df6e7af8f3de67e65150881c880f696c