CVE-2026-43020
N/A
N/A
Summary
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: MGMT: validate LTK enc_size on load
Load Long Term Keys stores the user-provided enc_size and later uses it to size fixed-size stack operations when replying to LE LTK requests. An enc_size larger than the 16-byte key buffer can therefore overflow the reply stack buffer.
Reject oversized enc_size values while validating the management LTK record so invalid keys never reach the stored key state.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 346af67b8d116f01ef696fd47959a55deb2db8b6 < 0f37d1e65c6d71ad94ccfb5c602163c525db789d | affected |
| Linux | Linux | 346af67b8d116f01ef696fd47959a55deb2db8b6 < 257cdb960d8ff6d60bb6461b03c814b6cf0c9e64 | affected |
| Linux | Linux | 346af67b8d116f01ef696fd47959a55deb2db8b6 < c34577f517b556fb6ca173d45bf7e766ae2564ce | affected |
| Linux | Linux | 346af67b8d116f01ef696fd47959a55deb2db8b6 < f71695e81f4cb428f3c7e2138eae88199005b52c | affected |
| Linux | Linux | 346af67b8d116f01ef696fd47959a55deb2db8b6 < 82f342b3b006ca1d65f4890c05f2ec32fcb808b6 | affected |
| Linux | Linux | 346af67b8d116f01ef696fd47959a55deb2db8b6 < 50fb64defa72a3fecd0af1ca7c6b47b5c5c2b257 | affected |
| Linux | Linux | 346af67b8d116f01ef696fd47959a55deb2db8b6 < 40ba329e8b4cd2fb11b0caf5e6a543ceaebb6009 | affected |
| Linux | Linux | 346af67b8d116f01ef696fd47959a55deb2db8b6 < b8dbe9648d69059cfe3a28917bfbf7e61efd7f15 | affected |
| Linux | Linux | 3.4 | affected |
| Linux | Linux | 0 < 3.4 | unaffected |
| Linux | Linux | 5.10.253 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.203 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.168 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.134 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.81 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.22 <= 6.18.* | unaffected |
| Linux | Linux | 6.19.12 <= 6.19.* | unaffected |
| Linux | Linux | 7.0 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/0f37d1e65c6d71ad94ccfb5c602163c525db789d
- https://git.kernel.org/stable/c/257cdb960d8ff6d60bb6461b03c814b6cf0c9e64
- https://git.kernel.org/stable/c/c34577f517b556fb6ca173d45bf7e766ae2564ce
- https://git.kernel.org/stable/c/f71695e81f4cb428f3c7e2138eae88199005b52c
- https://git.kernel.org/stable/c/82f342b3b006ca1d65f4890c05f2ec32fcb808b6
- https://git.kernel.org/stable/c/50fb64defa72a3fecd0af1ca7c6b47b5c5c2b257
- https://git.kernel.org/stable/c/40ba329e8b4cd2fb11b0caf5e6a543ceaebb6009
- https://git.kernel.org/stable/c/b8dbe9648d69059cfe3a28917bfbf7e61efd7f15
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