CVE Explorer

CVE-2026-63944

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: fix UAF in hci_le_create_cis_sync hci_le_create_cis_sync() dereferences conn->conn_timeout after releasing both rcu_read_lock() and hci_dev_lock(hdev). The conn pointer was obtained from an RCU-protected iteration over hdev->conn_hash.list and is not valid once these locks are dropped. A concurrent disconnect can free the hci_conn between the unlock and the dereference, causing a use-after-free read. Th

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:fad9539c464200356dd882753c05c3f3b532d31b1ad187676634060068971f4f

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/bluetooth/hci_sync.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"a55618c0f4cead9e59c63f5ee030d393fd70d861","status":"affected","version":"c09b80be6ffc338634b2f5f8cfa12b6843410834","versionType":"git"},{"lessThan":"a921957d39290143629eb38c4f74b9bef8035d0a","status":"affected","version":"c09b80be6ffc338634b2f5f8cfa12b6843410834","versionType":"git"},{"lessThan":"d9019210c8c30d40eb20094274cc647e352f48f7","status":"affected","version":"c09b80be6ffc338634b2f…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:dd10670f9eaa91ccf1de68a93dd3adc1a30b34e5e0be6d88d584a5626da15f9a · sha256:88d441c5c72b7b0b… · /containers/cna/affected/0

{"defaultStatus":"affected","product":"Linux","programFiles":["net/bluetooth/hci_sync.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.4"},{"lessThan":"6.4","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.143","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.93","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.35","versionType":"semver"},{"lessThan…

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:dd10670f9eaa91ccf1de68a93dd3adc1a30b34e5e0be6d88d584a5626da15f9a · sha256:88d441c5c72b7b0b… · /containers/cna/affected/1

Affected products and versions

2 source assertions

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:dd10670f9eaa91ccf1de68a93dd3adc1a30b34e5e0be6d88d584a5626da15f9a · sha256:88d441c5c72b7b0b… · /containers/cna/affected/0

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:dd10670f9eaa91ccf1de68a93dd3adc1a30b34e5e0be6d88d584a5626da15f9a · sha256:88d441c5c72b7b0b… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion

{"metric":{"baseScore":8.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:dd10670f9eaa91ccf1de68a93dd3adc1a30b34e5e0be6d88d584a5626da15f9a · sha256:88d441c5c72b7b0b… · /containers/cna/metrics/0/cvssV3_1

Source references

5 source assertions

{"url":"https://git.kernel.org/stable/c/380e67b1794a9a281a0cb592b4e62077fbd0c8ca"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:dd10670f9eaa91ccf1de68a93dd3adc1a30b34e5e0be6d88d584a5626da15f9a · sha256:88d441c5c72b7b0b… · /containers/cna/references/3

{"url":"https://git.kernel.org/stable/c/a55618c0f4cead9e59c63f5ee030d393fd70d861"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:dd10670f9eaa91ccf1de68a93dd3adc1a30b34e5e0be6d88d584a5626da15f9a · sha256:88d441c5c72b7b0b… · /containers/cna/references/0

{"url":"https://git.kernel.org/stable/c/a921957d39290143629eb38c4f74b9bef8035d0a"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:dd10670f9eaa91ccf1de68a93dd3adc1a30b34e5e0be6d88d584a5626da15f9a · sha256:88d441c5c72b7b0b… · /containers/cna/references/1

{"url":"https://git.kernel.org/stable/c/bfea6091e0fffb270c20e74384b660910277eb6c"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:dd10670f9eaa91ccf1de68a93dd3adc1a30b34e5e0be6d88d584a5626da15f9a · sha256:88d441c5c72b7b0b… · /containers/cna/references/4

{"url":"https://git.kernel.org/stable/c/d9019210c8c30d40eb20094274cc647e352f48f7"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:dd10670f9eaa91ccf1de68a93dd3adc1a30b34e5e0be6d88d584a5626da15f9a · sha256:88d441c5c72b7b0b… · /containers/cna/references/2

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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