CVE-2026-97565
CVE CVE-2026-97565EUVD EUVD-2026-86873Published 2026-09-25T10:21:52.000Z
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: smb: client: reject short READ responses in CIFSSMBRead() CIFSSMBRead() reads DataLengthHigh, DataLength and DataOffset out of the READ_RSP returned by the server without first checking that a whole READ_RSP was actually received. The length of the response is recorded in rsp_iov.iov_len, but nothing constrains it to be at least read_rsp_size before those fields are dereferenced. A malicious or compromised SMB1 server can return a response shorter than the READ_RSP header, so that parsing the header itself reads past the end of the receive buffer. SMB1 is not negotiated by default; reaching this code requires an explicit vers=1.0 mount. Reject the response unless it is at least read_rsp_size bytes long.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux patch: 6.18.53; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e6142a8bfc230c7263eb8b0475249c958ce49367; 2.6.12; patch: 0; patch: 7.2.7; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <aaa221c1b1d288845b55e9c366e5ef608dfff49d; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0f1f77b821506a4dacab6ce7d29cf9e0c26f14cd; patch: 7.3-rc3
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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