CVE-2026-46185
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.51%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- EPSS
- 0.51% probability · 42th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/15dc0a4de743a1aaa7b859b3aea79f08c695396cPatch
- https://git.kernel.org/stable/c/2be11faf79e49fb8250a181ff0b4d2b2f084af83Patch
- https://git.kernel.org/stable/c/b8c8a704f0bc133deb171f6aeb6f3a684203e212Patch
- https://git.kernel.org/stable/c/b9561402489d41149f63e001a74384863b7b30a6Patch
- https://git.kernel.org/stable/c/d62b8d236fab503c6fec1d3e9a38bea71feaca20Patch
- https://git.kernel.org/stable/c/ef6495d4df6e7af8f3de67e65150881c880f696cPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.