Description
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 products
linux: linux kernel
References8
- git.kernel.org/stable/c/0f37d1e65c6d71ad94ccfb5c602163c525db789d Patch
- git.kernel.org/stable/c/257cdb960d8ff6d60bb6461b03c814b6cf0c9e64 Patch
- git.kernel.org/stable/c/40ba329e8b4cd2fb11b0caf5e6a543ceaebb6009 Patch
- git.kernel.org/stable/c/50fb64defa72a3fecd0af1ca7c6b47b5c5c2b257 Patch
- git.kernel.org/stable/c/82f342b3b006ca1d65f4890c05f2ec32fcb808b6 Patch
- git.kernel.org/stable/c/b8dbe9648d69059cfe3a28917bfbf7e61efd7f15 Patch
- git.kernel.org/stable/c/c34577f517b556fb6ca173d45bf7e766ae2564ce Patch
- git.kernel.org/stable/c/f71695e81f4cb428f3c7e2138eae88199005b52c Patch
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 3 · as of 13 November 2026
- CWE
- CWE-787
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.