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CVE-2026-97907

Linux: Bluetooth: btrtl: Don't leak return code when parsing firmware format v2

Linux LinuxOperating systems
Open in ThreatlineRecord JSON
CVSS
NoneNot scored
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.20%Chance of exploitation activity in the next 30 days, higher than 9% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in90f3a142b5f8596a565b8e080d18a8050be6edefAlso 422f6547259654bae690713614c794dd1e2c0a0b, 83e3e515fd261600ed8491fb0a8bcdfb115c904eCVE List
Published25 Sep 2026Updated 19 Oct 2026CVE List

What fixes it

  • 90f3a142b5f8596a565b8e080d18a8050be6edefLinuxCVE List
  • 422f6547259654bae690713614c794dd1e2c0a0bLinuxCVE List
  • 83e3e515fd261600ed8491fb0a8bcdfb115c904eLinuxCVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: btrtl: Don't leak return code when parsing firmware format v2

When key_id from chip is zero, rtlbt_parse_firmware_v2() intentionally ignores all security headers. However, the implementation simply breaks from a switch statement and leaks uninitialized return code rc' (if the first section is a security one) or the previous section's rc'.

Fix it by really skipping a loop with `continue'. For consistency and readability, also do the same for the default case.

Text from CVE List

Affected versions 12

  • Linuxaffected: 9a24ce5e29b15c4c6b0c89c04f9df6ce14addefa before ba96047bba4a6101267cf4f6b3057cbc58e6c554CVE List
  • Linuxaffected: 9a24ce5e29b15c4c6b0c89c04f9df6ce14addefa before 90f3a142b5f8596a565b8e080d18a8050be6edefCVE List
  • Linuxaffected: 9a24ce5e29b15c4c6b0c89c04f9df6ce14addefa before 422f6547259654bae690713614c794dd1e2c0a0bCVE List
  • Linuxaffected: 9a24ce5e29b15c4c6b0c89c04f9df6ce14addefa before c4249cf6e80b1bd62a6a409aaabe760fe025dac3CVE List
  • Linuxaffected: 9a24ce5e29b15c4c6b0c89c04f9df6ce14addefa before 83e3e515fd261600ed8491fb0a8bcdfb115c904eCVE List
  • Linuxaffected: 6.4CVE List
  • Linuxunaffected: all versions before 6.4CVE List
  • Linuxunaffected: 6.6.158 through 6.6.*CVE List
  • Linuxunaffected: 6.12.111 through 6.12.*CVE List
  • Linuxunaffected: 6.18.53 through 6.18.*CVE List
  • Linuxunaffected: 7.2.7 through 7.2.*CVE List
  • Linuxunaffected: 7.3CVE List

References 5