{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-31512","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-03-09T15:48:24.107Z","datePublished":"2026-04-22T13:54:30.171Z","dateUpdated":"2026-05-11T22:10:13.614Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-05-11T22:10:13.614Z"},"descriptions":[{"lang":"en","value":"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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/l2cap_core.c"],"versions":[{"version":"aac23bf636593cc2d67144aed373a46a1a5f76b1","lessThan":"cef09691cfb61f6c91cc27c3d69634f81c8ab949","status":"affected","versionType":"git"},{"version":"aac23bf636593cc2d67144aed373a46a1a5f76b1","lessThan":"3340be2bafdcc806f048273ea6d8e82a6597aa1b","status":"affected","versionType":"git"},{"version":"aac23bf636593cc2d67144aed373a46a1a5f76b1","lessThan":"e47315b84d0eb188772c3ff5cf073cdbdefca6b4","status":"affected","versionType":"git"},{"version":"aac23bf636593cc2d67144aed373a46a1a5f76b1","lessThan":"477ad4976072056c348937e94f24583321938df4","status":"affected","versionType":"git"},{"version":"aac23bf636593cc2d67144aed373a46a1a5f76b1","lessThan":"40c7f7eea2f4d9cb0b3e924254c8c9053372168f","status":"affected","versionType":"git"},{"version":"aac23bf636593cc2d67144aed373a46a1a5f76b1","lessThan":"8c96f3bd4ae0802db90630be8e9851827e9c9209","status":"affected","versionType":"git"},{"version":"aac23bf636593cc2d67144aed373a46a1a5f76b1","lessThan":"5ad981249be52f5e4e92e0e97b436b569071cb86","status":"affected","versionType":"git"},{"version":"aac23bf636593cc2d67144aed373a46a1a5f76b1","lessThan":"c65bd945d1c08c3db756821b6bf9f1c4a77b29c6","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/bluetooth/l2cap_core.c"],"versions":[{"version":"3.14","status":"affected"},{"version":"0","lessThan":"3.14","status":"unaffected","versionType":"semver"},{"version":"5.10.253","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.203","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.168","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.131","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.80","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.21","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"6.19.11","lessThanOrEqual":"6.19.*","status":"unaffected","versionType":"semver"},{"version":"7.0","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.14","versionEndExcluding":"5.10.253"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.14","versionEndExcluding":"5.15.203"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.14","versionEndExcluding":"6.1.168"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.14","versionEndExcluding":"6.6.131"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.14","versionEndExcluding":"6.12.80"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.14","versionEndExcluding":"6.18.21"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.14","versionEndExcluding":"6.19.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.14","versionEndExcluding":"7.0"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/cef09691cfb61f6c91cc27c3d69634f81c8ab949"},{"url":"https://git.kernel.org/stable/c/3340be2bafdcc806f048273ea6d8e82a6597aa1b"},{"url":"https://git.kernel.org/stable/c/e47315b84d0eb188772c3ff5cf073cdbdefca6b4"},{"url":"https://git.kernel.org/stable/c/477ad4976072056c348937e94f24583321938df4"},{"url":"https://git.kernel.org/stable/c/40c7f7eea2f4d9cb0b3e924254c8c9053372168f"},{"url":"https://git.kernel.org/stable/c/8c96f3bd4ae0802db90630be8e9851827e9c9209"},{"url":"https://git.kernel.org/stable/c/5ad981249be52f5e4e92e0e97b436b569071cb86"},{"url":"https://git.kernel.org/stable/c/c65bd945d1c08c3db756821b6bf9f1c4a77b29c6"}],"title":"Bluetooth: L2CAP: Validate PDU length before reading SDU length in l2cap_ecred_data_rcv()","x_generator":{"engine":"bippy-1.2.0"}}}}