{"affected":[{"defaultStatus":"unaffected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"lessThan":"cef09691cfb61f6c91cc27c3d69634f81c8ab949","status":"affected","version":"aac23bf636593cc2d67144aed373a46a1a5f76b1","versionType":"git"},{"lessThan":"3340be2bafdcc806f048273ea6d8e82a6597aa1b","status":"affected","version":"aac23bf636593cc2d67144aed373a46a1a5f76b1","versionType":"git"},{"lessThan":"e47315b84d0eb188772c3ff5cf073cdbdefca6b4","status":"affected","version":"aac23bf636593cc2d67144aed373a46a1a5f76b1","versionType":"git"},{"lessThan":"477ad4976072056c348937e94f24583321938df4","status":"affected","version":"aac23bf636593cc2d67144aed373a46a1a5f76b1","versionType":"git"},{"lessThan":"40c7f7eea2f4d9cb0b3e924254c8c9053372168f","status":"affected","version":"aac23bf636593cc2d67144aed373a46a1a5f76b1","versionType":"git"},{"lessThan":"8c96f3bd4ae0802db90630be8e9851827e9c9209","status":"affected","version":"aac23bf636593cc2d67144aed373a46a1a5f76b1","versionType":"git"},{"lessThan":"5ad981249be52f5e4e92e0e97b436b569071cb86","status":"affected","version":"aac23bf636593cc2d67144aed373a46a1a5f76b1","versionType":"git"},{"lessThan":"c65bd945d1c08c3db756821b6bf9f1c4a77b29c6","status":"affected","version":"aac23bf636593cc2d67144aed373a46a1a5f76b1","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"status":"affected","version":"3.14"},{"lessThan":"3.14","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.253","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.203","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.168","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.131","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.80","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.21","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cveId":"CVE-2026-31512","cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: Validate PDU length before reading SDU length in l2cap_ecred_data_rcv()\n\nl2cap_ecred_data_rcv() reads the SDU length field from skb->data using\nget_unaligned_le16() without first verifying that skb contains at least\nL2CAP_SDULEN_SIZE (2) bytes. When skb->len is less than 2, this reads\npast the valid data in the skb.\n\nThe ERTM reassembly path correctly calls pskb_may_pull() before reading\nthe SDU length (l2cap_reassemble_sdu, L2CAP_SAR_START case). Apply the\nsame validation to the Enhanced Credit Based Flow Control data path.","epss":{"date":"2026-11-05","percentile":0.02027,"score":0.00123},"exploits":[],"kev":null,"metrics":[],"modifiedAt":1793915104404,"publishedAt":1776866070171,"references":[{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/cef09691cfb61f6c91cc27c3d69634f81c8ab949"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/3340be2bafdcc806f048273ea6d8e82a6597aa1b"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/e47315b84d0eb188772c3ff5cf073cdbdefca6b4"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/477ad4976072056c348937e94f24583321938df4"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/40c7f7eea2f4d9cb0b3e924254c8c9053372168f"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/8c96f3bd4ae0802db90630be8e9851827e9c9209"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/5ad981249be52f5e4e92e0e97b436b569071cb86"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/c65bd945d1c08c3db756821b6bf9f1c4a77b29c6"}],"remediation":[],"revision":"83a86bfde5bd9934b25e3950073f3548dc9143ac6adc7dc25b55c4ec4c2ddae7","sources":[{"modifiedAt":1793915104404,"name":"CNA: Linux","retrievedAt":1793917074887,"url":"https://www.cve.org/CVERecord?id=CVE-2026-31512"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793917103787,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-31512"}],"ssvc":{"assessedAt":1793914581853,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Bluetooth: L2CAP: Validate PDU length before reading SDU length in l2cap_ecred_data_rcv()","updatedAt":1793917103787}