{"id":"CVE-2026-63975","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-63975","generatedAt":"2026-10-28T00:28:29.004Z","title":"In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix possible crash on l2cap_ecred_conn_rsp If dcid is received for an already-assigned destination CID the spec requires that both channels to be discarded, but…","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: Fix possible crash on l2cap_ecred_conn_rsp\n\nIf dcid is received for an already-assigned destination CID the spec\nrequires that both channels to be discarded, but calling l2cap_chan_del\nmay invalidate the tmp cursor created by list_for_each_entry_safe and\nin fact it is the wrong procedure as the chan->dcid may be assigned\npreviously it really needs to be disconnected.\n\nCalling l2cap_chan_clone directly may still lead to l2cap_chan_del so\ninstead schedule l2cap_chan_timeout with delay 0 to close the channel\nasynchronously.","published":"2026-07-19T16:17:17.000Z","lastModified":"2026-10-19T21:17:15.000Z","status":"Modified","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":{"version":"3.1","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-416","CWE-667"],"affected":["linux/linux kernel"],"epss":{"score":0.00274,"percentile":0.19662,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.27%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://git.kernel.org/stable/c/291eec1041c918c460dc9702e44edd17794b4a4b","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3c8eaa91eb433c450426539290be4ffe282e9f00","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/41c2713b204e6cb6a94587bc6bf6935107df5479","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/41e29548b5e8b5e5fcf708786b3bea67cab107fa","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6319b38fe69f56ed95680ade485b957a53fff642","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d153b8898c0051eb8b6a083b35cbe304a5886bd5","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e6833e737a51db1e5ea0401322acf5e22abd8be6","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ecfed1e0d8efecad6737a0d83e21d2fd021d8c48","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-63975","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}