CVE-2026-43017 (GCVE-0-2026-43017)

Vulnerability from cvelistv5 – Published: 2026-05-01 14:15 – Updated: 2026-05-01 14:15
VLAI?
Title
Bluetooth: MGMT: validate mesh send advertising payload length
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: validate mesh send advertising payload length mesh_send() currently bounds MGMT_OP_MESH_SEND by total command length, but it never verifies that the bytes supplied for the flexible adv_data[] array actually match the embedded adv_data_len field. MGMT_MESH_SEND_SIZE only covers the fixed header, so a truncated command can still pass the existing 20..50 byte range check and later drive the async mesh send path past the end of the queued command buffer. Keep rejecting zero-length and oversized advertising payloads, but validate adv_data_len explicitly and require the command length to exactly match the flexible array size before queueing the request.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: b338d91703fae6f6afd67f3f75caa3b8f36ddef3 , < 24fa32369cf15d8fc918bdfe94097b12e6acada0 (git)
Affected: b338d91703fae6f6afd67f3f75caa3b8f36ddef3 , < 244b639e6a3a8e26241e201004a3a9f764476631 (git)
Affected: b338d91703fae6f6afd67f3f75caa3b8f36ddef3 , < 0b706fb2294aff3adfd54653bda1b5e356ad4566 (git)
Affected: b338d91703fae6f6afd67f3f75caa3b8f36ddef3 , < edb5898cfa91afe7e8f83eda18d93034c953d632 (git)
Affected: b338d91703fae6f6afd67f3f75caa3b8f36ddef3 , < 562ed1954f0c1bff3422b7b752bd3dacf185edbf (git)
Affected: b338d91703fae6f6afd67f3f75caa3b8f36ddef3 , < bda93eec78cdbfe5cda00785cefebd443e56b88b (git)
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    Linux Linux Affected: 6.1
Unaffected: 0 , < 6.1 (semver)
Unaffected: 6.1.168 , ≤ 6.1.* (semver)
Unaffected: 6.6.134 , ≤ 6.6.* (semver)
Unaffected: 6.12.81 , ≤ 6.12.* (semver)
Unaffected: 6.18.22 , ≤ 6.18.* (semver)
Unaffected: 6.19.12 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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