CVE-2026-43020
Bluetooth: MGMT: validate LTK enc_size on load
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
3.4
References 8
git.kernel.org
- stable/c/0f37d1e65c6d71ad94ccfb5c602163c525db789d
- stable/c/257cdb960d8ff6d60bb6461b03c814b6cf0c9e64
- stable/c/c34577f517b556fb6ca173d45bf7e766ae2564ce
- stable/c/f71695e81f4cb428f3c7e2138eae88199005b52c
- stable/c/82f342b3b006ca1d65f4890c05f2ec32fcb808b6
- stable/c/50fb64defa72a3fecd0af1ca7c6b47b5c5c2b257
- stable/c/40ba329e8b4cd2fb11b0caf5e6a543ceaebb6009
- stable/c/b8dbe9648d69059cfe3a28917bfbf7e61efd7f15