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CVE-2026-64403

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: validate option length before reading conf opt value l2cap_get_conf_opt() derives the option length from the attacker-controlled opt->len field and immediately dereferences opt->val (as u8, get_unaligned_le16() or get_unaligned_le32(), or a raw pointer for the default case) before any caller has confirmed that opt->len bytes are present in the buffer. The callers (l2cap_parse_conf_req(), l2cap_parse_conf_rsp(
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ba02670320a7d6ec97565cbc9fc4a568b3d5d2b3b5a53f10f41956e8efc61d0e
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"affected","product":"Linux","programFiles":["net/bluetooth/l2cap_core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.1"},{"lessThan":"5.1","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.261","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.212","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionType":"semver"},{"less…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bb6b62ecd385550dc8545bf1043fee5cba8c543b4273c20e3510ea51692f6fbe · sha256:106af0ed464ef8fe… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/bluetooth/l2cap_core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"cca81b4bc672604a84f6d224a55cc77ec7dee619","status":"affected","version":"7c9cbd0b5e38a1672fcd137894ace3b042dfbf69","versionType":"git"},{"lessThan":"f70d4aa88068096f35d73e3a05eff33c0a16b9cd","status":"affected","version":"7c9cbd0b5e38a1672fcd137894ace3b042dfbf69","versionType":"git"},{"lessThan":"7d871e969b941ce25653f7716203a0ea4d07ad4b","status":"affected","version":"7c9cbd0b5e38a1672fc…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bb6b62ecd385550dc8545bf1043fee5cba8c543b4273c20e3510ea51692f6fbe · sha256:106af0ed464ef8fe… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["net/bluetooth/l2cap_core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.1"},{"lessThan":"5.1","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.261","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.212","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionType":"semver"},{"less…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bb6b62ecd385550dc8545bf1043fee5cba8c543b4273c20e3510ea51692f6fbe · sha256:106af0ed464ef8fe… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/bluetooth/l2cap_core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"cca81b4bc672604a84f6d224a55cc77ec7dee619","status":"affected","version":"7c9cbd0b5e38a1672fcd137894ace3b042dfbf69","versionType":"git"},{"lessThan":"f70d4aa88068096f35d73e3a05eff33c0a16b9cd","status":"affected","version":"7c9cbd0b5e38a1672fcd137894ace3b042dfbf69","versionType":"git"},{"lessThan":"7d871e969b941ce25653f7716203a0ea4d07ad4b","status":"affected","version":"7c9cbd0b5e38a1672fc…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:bb6b62ecd385550dc8545bf1043fee5cba8c543b4273c20e3510ea51692f6fbe · sha256:106af0ed464ef8fe… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":7.1,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:bb6b62ecd385550dc8545bf1043fee5cba8c543b4273c20e3510ea51692f6fbe · sha256:106af0ed464ef8fe… · /containers/cna/metrics/0/cvssV3_1

Source references

8 source assertions
{"url":"https://git.kernel.org/stable/c/687617555cedfb74c9e3cb85d759b908dcb17856"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:bb6b62ecd385550dc8545bf1043fee5cba8c543b4273c20e3510ea51692f6fbe · sha256:106af0ed464ef8fe… · /containers/cna/references/7
{"url":"https://git.kernel.org/stable/c/6b47bdaacfd0045687880177e0987055d8f4765a"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:bb6b62ecd385550dc8545bf1043fee5cba8c543b4273c20e3510ea51692f6fbe · sha256:106af0ed464ef8fe… · /containers/cna/references/6
{"url":"https://git.kernel.org/stable/c/73abbaf91aa33da87c008fb62c148ade561bb606"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:bb6b62ecd385550dc8545bf1043fee5cba8c543b4273c20e3510ea51692f6fbe · sha256:106af0ed464ef8fe… · /containers/cna/references/5
{"url":"https://git.kernel.org/stable/c/7d871e969b941ce25653f7716203a0ea4d07ad4b"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:bb6b62ecd385550dc8545bf1043fee5cba8c543b4273c20e3510ea51692f6fbe · sha256:106af0ed464ef8fe… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/98d93c226bdfaa79bbdd86981921d7f106374225"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:bb6b62ecd385550dc8545bf1043fee5cba8c543b4273c20e3510ea51692f6fbe · sha256:106af0ed464ef8fe… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/996d3da39899aceb8f4910911a3f19a45a7d9d1b"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:bb6b62ecd385550dc8545bf1043fee5cba8c543b4273c20e3510ea51692f6fbe · sha256:106af0ed464ef8fe… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/cca81b4bc672604a84f6d224a55cc77ec7dee619"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:bb6b62ecd385550dc8545bf1043fee5cba8c543b4273c20e3510ea51692f6fbe · sha256:106af0ed464ef8fe… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/f70d4aa88068096f35d73e3a05eff33c0a16b9cd"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:bb6b62ecd385550dc8545bf1043fee5cba8c543b4273c20e3510ea51692f6fbe · sha256:106af0ed464ef8fe… · /containers/cna/references/1

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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