CVE-2026-63948

{"id": "CVE-2026-63948", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "06acb75e7ed600d0bbf7bff5628aa8f24a97978c", "lessThan": "50f1bcaaaa3a80bb1c3472044bc146e8d49d51ee", "versionType": "git"}, {"status": "affected", "version": "e97e16433eb4533083b096a3824b93a5ca3aee79", "lessThan": "b5c59a5b469e2a809a2d57eda4ded94235971060", "versionType": "git"}, {"status": "affected", "version": "8960ff650aec70485b40771cd8e6e8c4cb467d33", "lessThan": "8894c2010435a56ce7c6c2a8785860c13554df2f", "versionType": "git"}, {"status": "affected", "version": "955b5b6c54d95b5e7444dfc81c95c8e013f27ac0", "lessThan": "63cd225cc13d782a85e2a73c04d0d350153eada1", "versionType": "git"}, {"status": "affected", "version": "adf0398cee86643b8eacde95f17d073d022f782c", "lessThan": "107c826e4ef9ec5ad8f60e6fe64d8d5325ba508f", "versionType": "git"}, {"status": "affected", "version": "adf0398cee86643b8eacde95f17d073d022f782c", "lessThan": "e8a5baff5be273ca07771fd2b9bb1f2a4152917b", "versionType": "git"}, {"status": "affected", "version": "adf0398cee86643b8eacde95f17d073d022f782c", "lessThan": "08d81fe96f80a8e20c7acb573b6a45d901fcf2cd", "versionType": "git"}, {"status": "affected", "version": "adf0398cee86643b8eacde95f17d073d022f782c", "lessThan": "9dbd84990394c51f5cee1e8871bb5ff8af5ed939", "versionType": "git"}, {"status": "affected", "version": "e137e2ba96e51902dc2878131823a96bf8e638ae", "versionType": "git"}, {"status": "affected", "version": "6466ee65e5b27161c846c73ef407f49dfa1bd1d9", "versionType": "git"}, {"status": "affected", "version": "eb86f955488c39526534211f2610e48a5cf8ead4", "versionType": "git"}, {"status": "affected", "version": "5.10.217", "lessThan": "5.10.259", "versionType": "semver"}, {"status": "affected", "version": "5.15.159", "lessThan": "5.15.210", "versionType": "semver"}, {"status": "affected", "version": "6.1.91", "lessThan": "6.1.176", "versionType": "semver"}, {"status": "affected", "version": "6.6.31", "lessThan": "6.6.143", "versionType": "semver"}, {"status": "affected", "version": "4.19.314", "lessThan": "4.20", "versionType": "semver"}, {"status": "affected", "version": "5.4.276", "lessThan": "5.5", "versionType": "semver"}, {"status": "affected", "version": "6.8.10", "lessThan": "6.9", "versionType": "semver"}], "programFiles": ["net/bluetooth/l2cap_core.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.9"}, {"status": "unaffected", "version": "0", "lessThan": "6.9", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.259", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.210", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.176", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.143", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.93", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.35", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.12", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/bluetooth/l2cap_core.c"], "defaultStatus": "affected"}]}], "published": "2026-07-19T16:17:13.460", "references": [{"url": "https://git.kernel.org/stable/c/08d81fe96f80a8e20c7acb573b6a45d901fcf2cd", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/107c826e4ef9ec5ad8f60e6fe64d8d5325ba508f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/50f1bcaaaa3a80bb1c3472044bc146e8d49d51ee", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/63cd225cc13d782a85e2a73c04d0d350153eada1", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/8894c2010435a56ce7c6c2a8785860c13554df2f", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9dbd84990394c51f5cee1e8871bb5ff8af5ed939", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b5c59a5b469e2a809a2d57eda4ded94235971060", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e8a5baff5be273ca07771fd2b9bb1f2a4152917b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: fix chan ref leak in l2cap_chan_timeout() on !conn\n\n__set_chan_timer() takes a l2cap_chan reference via l2cap_chan_hold()\nbefore scheduling the delayed work. The normal path in\nl2cap_chan_timeout() drops this reference with l2cap_chan_put() at the\nend, but the early return when chan->conn is NULL skips the put,\nleaking the reference.\n\nAdd the missing l2cap_chan_put() before the early return."}], "lastModified": "2026-10-30T14:27:52.857", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DA53C90A-2AD6-4274-B06B-05352CEF255E", "versionEndExcluding": "4.20", "versionStartIncluding": "4.19.314"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "813E002B-D913-4D17-A6BE-8E160B9025FD", "versionEndExcluding": "5.5", "versionStartIncluding": "5.4.276"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C63D9AC0-E49E-46E1-A36C-1F22481217DD", "versionEndExcluding": "5.10.259", "versionStartIncluding": "5.10.217"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F52EC896-64A5-4CEB-B74B-0C51EEA66331", "versionEndExcluding": "5.15.210", "versionStartIncluding": "5.15.159"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6EE1921C-D07D-4E62-A40D-22FD979BD383", "versionEndExcluding": "6.1.176", "versionStartIncluding": "6.1.91"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0E50B1C5-60DF-4ED7-806A-E7E47AA5E41E", "versionEndExcluding": "6.6.143", "versionStartIncluding": "6.6.31"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DD26A649-FB0B-4A7B-A16B-A9D27807D7E9", "versionEndExcluding": "6.9", "versionStartIncluding": "6.8.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A50D644F-080A-47DE-B4D0-2409755F71B0", "versionEndExcluding": "6.12.93", "versionStartIncluding": "6.9.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0FCCB23A-7629-4386-93B6-B119237C4382", "versionEndExcluding": "6.18.35", "versionStartIncluding": "6.13"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9161A938-0FA8-44BC-95FE-C5A271601AB3", "versionEndExcluding": "7.0.12", "versionStartIncluding": "6.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.9:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3F2A4A3D-068A-4CF2-A09F-9C7937DDB0A5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "0D38F0BF-A728-4133-A358-D44A2F7EE6D6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EC732D08-5F7B-46D9-B154-E60C7F4F0A97"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E5910A9D-F60A-409A-B486-FE66BFEBA9B9"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "81DFF19E-9CF8-49C6-8C36-1E4038622933"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}