{"cve":"CVE-2024-36016","nvd":{"published":"2024-05-29T19:15:48.297","modified":"2026-08-04T11:18:22.827","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntty: n_gsm: fix possible out-of-bounds in gsm0_receive()\n\nAssuming the following:\n- side A configures the n_gsm in basic option mode\n- side B sends the header of a basic option mode frame with data length 1\n- side A switches to advanced option mode\n- side B sends 2 data bytes which exceeds gsm->len\n  Reason: gsm->len is not used in advanced option mode.\n- side A switches to basic option mode\n- side B keeps sending until gsm0_receive() writes past gsm->buf\n  Reason: Neither gsm->state nor gsm->len have been reset after\n  reconfiguration.\n\nFix this by changing gsm->count to gsm->len comparison from equal to less\nthan. Also add upper limit checks against the constant MAX_MRU in\ngsm0_receive() and gsm1_receive() to harden against memory corruption of\ngsm->len and gsm->mru.\n\nAll other checks remain as we still need to limit the data according to the\nuser configuration and actual payload size.","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-125"],"references":["https://git.kernel.org/stable/c/0fb736c9931e02dbc7d9a75044c8e1c039e50f04","https://git.kernel.org/stable/c/46f52c89a7e7d2691b97a9728e4591d071ca8abc","https://git.kernel.org/stable/c/47388e807f85948eefc403a8a5fdc5b406a65d5a","https://git.kernel.org/stable/c/4c267110fc110390704cc065edb9817fdd10ff54","https://git.kernel.org/stable/c/774d83b008eccb1c48c14dc5486e7aa255731350"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:51:20.603330631+00:00"},"epss":{"cve":"CVE-2024-36016","score":0.00265,"percentile":0.18497,"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."]}