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CVE-2026-98111: Bluetooth: btintel: validate version TLV value lengths

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-25 · updated 2026-10-28
• Weakness: CWE-125

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btintel: validate version TLV value lengths btintel_parse_version_tlv() verifies that a complete TLV is present in the response, but it does not ensure that the value is long enough for the specific TLV type. A short value can therefore cause an out-of-bounds read through get_unaligned_le16(), get_unaligned_le32(), or memcpy(). Reject values shorter than the minimum required by each known TLV type. Also reject responses that do not contain the Command Complete Status field.

Affected products

• Linux kernel: from 5.10 before 6.6.158; from 6.7 before 6.12.111; from 6.13 before 6.18.53; from 6.19 before 7.2.7; 7.3-rc1 — fixed in 6.6.158, 6.12.111, 6.18.53, 7.2.7
• Linux kernel: 5.10 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 6.6.158, 6.12.111, 6.18.53, 7.2.7; Linux kernel 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/5ec43df2830b73e004147303bf7914ca884d6770
• https://git.kernel.org/stable/c/76948d207d0978a613ce06a05cba07284a5578a7
• https://git.kernel.org/stable/c/83499ac3ca62e43ed40f7574b13ed398a6891511
• https://git.kernel.org/stable/c/a086c0892969bf8a0151b0f12bd14a68827c88b2
• https://git.kernel.org/stable/c/e9cf7f175c00d36b060828f4eac8d2e246ee079b

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