{"cve":"CVE-2026-31748","nvd":{"published":"2026-05-01T15:16:37.593","modified":"2026-06-17T10:34:23.397","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncomedi: me_daq: Fix potential overrun of firmware buffer\n\n`me2600_xilinx_download()` loads the firmware that was requested by\n`request_firmware()`.  It is possible for it to overrun the source\nbuffer because it blindly trusts the file format.  It reads a data\nstream length from the first 4 bytes into variable `file_length` and\nreads the data stream contents of length `file_length` from offset 16\nonwards.  Although it checks that the supplied firmware is at least 16\nbytes long, it does not check that it is long enough to contain the data\nstream.\n\nAdd a test to ensure that the supplied firmware is long enough to\ncontain the header and the data stream.  On failure, log an error and\nreturn `-EINVAL`.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-787"],"references":["https://git.kernel.org/stable/c/1bf8761eb59e94bf7b8c17b2a1ee48f14378b172","https://git.kernel.org/stable/c/2fc25a4c2e055cd42ea39a1b42c89bfef70e0319","https://git.kernel.org/stable/c/9f39fa07259eb342908e4aa0271dee038a8ce4f8","https://git.kernel.org/stable/c/a47ae40339c1048f519df33ff8840731720f57cb","https://git.kernel.org/stable/c/c16ac4e173a05011437a2d868f70cc415339065a"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:33:09.003606135+00:00"},"epss":{"cve":"CVE-2026-31748","score":0.00129,"percentile":0.02541,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}