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CVE-2026-63893

In the Linux kernel, the following vulnerability has been resolved: thunderbolt: property: Reject u32 wrap in tb_property_entry_valid() entry->value is u32 and entry->length is u16; the sum is performed in u32 and wraps. A malicious XDomain peer can pick value = 0xffffff00, length = 0x100 so the sum 0x100000000 wraps to 0 and passes the > block_len check. tb_property_parse() then passes entry->value to parse_dwdata() as a dword offset into the property block, reading attacker-directed memory
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:8297ecf2d5b2cb7e9402baee9b9ea788bc1cc9ef2814a471961936ddab958c83
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":["drivers/thunderbolt/property.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.15"},{"lessThan":"4.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.259","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.210","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.176","versionType":"semver"},…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7736c3acbc9a5e5d64520ad7c89e813a5874565d0e90dffcb3be20d7416c8dfa · sha256:d9527696e6cfcb0d… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/thunderbolt/property.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"6a63623621639acbb39bc2d9fb09559681716695","status":"affected","version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","versionType":"git"},{"lessThan":"e8a0b0a93a6ef958e70b1dd4930beb6dc0026b36","status":"affected","version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","versionType":"git"},{"lessThan":"9fee50c4e1e42f6d3cbe30df584f9f648f626071","status":"affected","version":"cdae7c07e3e3509…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7736c3acbc9a5e5d64520ad7c89e813a5874565d0e90dffcb3be20d7416c8dfa · sha256:d9527696e6cfcb0d… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/thunderbolt/property.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.15"},{"lessThan":"4.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.259","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.210","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.176","versionType":"semver"},…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7736c3acbc9a5e5d64520ad7c89e813a5874565d0e90dffcb3be20d7416c8dfa · sha256:d9527696e6cfcb0d… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/thunderbolt/property.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"6a63623621639acbb39bc2d9fb09559681716695","status":"affected","version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","versionType":"git"},{"lessThan":"e8a0b0a93a6ef958e70b1dd4930beb6dc0026b36","status":"affected","version":"cdae7c07e3e3509eaabc18c1640a55dc5b99c179","versionType":"git"},{"lessThan":"9fee50c4e1e42f6d3cbe30df584f9f648f626071","status":"affected","version":"cdae7c07e3e3509…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7736c3acbc9a5e5d64520ad7c89e813a5874565d0e90dffcb3be20d7416c8dfa · sha256:d9527696e6cfcb0d… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":8.1,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:7736c3acbc9a5e5d64520ad7c89e813a5874565d0e90dffcb3be20d7416c8dfa · sha256:d9527696e6cfcb0d… · /containers/cna/metrics/0/cvssV3_1

Source references

8 source assertions
{"url":"https://git.kernel.org/stable/c/01deda0152066c6c955f0619114ea6afa070aaec"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7736c3acbc9a5e5d64520ad7c89e813a5874565d0e90dffcb3be20d7416c8dfa · sha256:d9527696e6cfcb0d… · /containers/cna/references/7
{"url":"https://git.kernel.org/stable/c/31b98e503ecca8077e5247253dd5425ab84bc96d"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7736c3acbc9a5e5d64520ad7c89e813a5874565d0e90dffcb3be20d7416c8dfa · sha256:d9527696e6cfcb0d… · /containers/cna/references/5
{"url":"https://git.kernel.org/stable/c/5c06a3043ad944f087bb2ae0aae28d820bb9f460"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7736c3acbc9a5e5d64520ad7c89e813a5874565d0e90dffcb3be20d7416c8dfa · sha256:d9527696e6cfcb0d… · /containers/cna/references/4
{"url":"https://git.kernel.org/stable/c/6a63623621639acbb39bc2d9fb09559681716695"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7736c3acbc9a5e5d64520ad7c89e813a5874565d0e90dffcb3be20d7416c8dfa · sha256:d9527696e6cfcb0d… · /containers/cna/references/0
{"url":"https://git.kernel.org/stable/c/8d4a758b407ab3de3be86d1ceadfa35d717d30c7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7736c3acbc9a5e5d64520ad7c89e813a5874565d0e90dffcb3be20d7416c8dfa · sha256:d9527696e6cfcb0d… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/9fee50c4e1e42f6d3cbe30df584f9f648f626071"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7736c3acbc9a5e5d64520ad7c89e813a5874565d0e90dffcb3be20d7416c8dfa · sha256:d9527696e6cfcb0d… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/a47784aee77f33f786dc5d7375db821bdae68792"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7736c3acbc9a5e5d64520ad7c89e813a5874565d0e90dffcb3be20d7416c8dfa · sha256:d9527696e6cfcb0d… · /containers/cna/references/6
{"url":"https://git.kernel.org/stable/c/e8a0b0a93a6ef958e70b1dd4930beb6dc0026b36"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7736c3acbc9a5e5d64520ad7c89e813a5874565d0e90dffcb3be20d7416c8dfa · sha256:d9527696e6cfcb0d… · /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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