Vulnerability · Published May 24, 2021 · Assigned by mitre
CVE-2020-26555
Medium 5.4
In plain English
A medium-severity security flaw in the bpftool package (AlmaLinux). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 59% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.4Medium
Exploit odds (30 days)0.9%top 40.5% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Bluetooth legacy BR/EDR PIN code pairing in Bluetooth Core Specification 1.0B through 5.2 may permit an unauthenticated nearby device to spoof the BD_ADDR of the peer device to complete pairing without knowledge of the PIN.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | bpftool | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:9 | bpftool | 7.3.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:9 | kernel | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:9 | kernel-64k | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:9 | kernel-64k-core | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:9 | kernel-64k-debug | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:9 | kernel-64k-debug-core | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:9 | kernel-64k-debug-devel | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:9 | kernel-64k-debug-devel-matched | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:9 | kernel-64k-debug-modules | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:9 | kernel-64k-debug-modules-core | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:9 | kernel-64k-debug-modules-extra | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:9 | kernel-64k-devel | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:9 | kernel-64k-devel-matched | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:9 | kernel-64k-modules | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:9 | kernel-64k-modules-core | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:9 | kernel-64k-modules-extra | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-abi-stablelists | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:9 | kernel-abi-stablelists | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-core | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:9 | kernel-core | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-cross-headers | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:9 | kernel-cross-headers | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-debug | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:9 | kernel-debug | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-debug-core | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:9 | kernel-debug-core | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-debug-devel | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:9 | kernel-debug-devel | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:9 | kernel-debug-devel-matched | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-debug-modules | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:9 | kernel-debug-modules | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:9 | kernel-debug-modules-core | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-debug-modules-extra | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:9 | kernel-debug-modules-extra | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:9 | kernel-debug-uki-virt | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-devel | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:9 | kernel-devel | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:9 | kernel-devel-matched | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-doc | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:9 | kernel-doc | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-headers | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:9 | kernel-headers | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-modules | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:9 | kernel-modules | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:9 | kernel-modules-core | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-modules-extra | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:9 | kernel-modules-extra | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-rt | 4.18.0-553.8.1.rt7.349.el8_10 | ALSA-2024:4352 |
| AlmaLinux:9 | kernel-rt | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-rt-core | 4.18.0-553.8.1.rt7.349.el8_10 | ALSA-2024:4352 |
| AlmaLinux:9 | kernel-rt-core | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-rt-debug | 4.18.0-553.8.1.rt7.349.el8_10 | ALSA-2024:4352 |
| AlmaLinux:9 | kernel-rt-debug | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-rt-debug-core | 4.18.0-553.8.1.rt7.349.el8_10 | ALSA-2024:4352 |
| AlmaLinux:9 | kernel-rt-debug-core | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-rt-debug-devel | 4.18.0-553.8.1.rt7.349.el8_10 | ALSA-2024:4352 |
| AlmaLinux:9 | kernel-rt-debug-devel | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-rt-debug-kvm | 4.18.0-553.8.1.rt7.349.el8_10 | ALSA-2024:4352 |
| AlmaLinux:8 | kernel-rt-debug-modules | 4.18.0-553.8.1.rt7.349.el8_10 | ALSA-2024:4352 |
| AlmaLinux:9 | kernel-rt-debug-modules | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:9 | kernel-rt-debug-modules-core | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-rt-debug-modules-extra | 4.18.0-553.8.1.rt7.349.el8_10 | ALSA-2024:4352 |
| AlmaLinux:9 | kernel-rt-debug-modules-extra | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-rt-devel | 4.18.0-553.8.1.rt7.349.el8_10 | ALSA-2024:4352 |
| AlmaLinux:9 | kernel-rt-devel | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-rt-kvm | 4.18.0-553.8.1.rt7.349.el8_10 | ALSA-2024:4352 |
| AlmaLinux:8 | kernel-rt-modules | 4.18.0-553.8.1.rt7.349.el8_10 | ALSA-2024:4352 |
| AlmaLinux:9 | kernel-rt-modules | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:9 | kernel-rt-modules-core | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-rt-modules-extra | 4.18.0-553.8.1.rt7.349.el8_10 | ALSA-2024:4352 |
| AlmaLinux:9 | kernel-rt-modules-extra | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-tools | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:9 | kernel-tools | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-tools-libs | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:9 | kernel-tools-libs | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-tools-libs-devel | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:9 | kernel-tools-libs-devel | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:9 | kernel-uki-virt | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-zfcpdump | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:9 | kernel-zfcpdump | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-zfcpdump-core | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:9 | kernel-zfcpdump-core | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-zfcpdump-devel | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:9 | kernel-zfcpdump-devel | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:9 | kernel-zfcpdump-devel-matched | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-zfcpdump-modules | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:9 | kernel-zfcpdump-modules | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:9 | kernel-zfcpdump-modules-core | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | kernel-zfcpdump-modules-extra | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:9 | kernel-zfcpdump-modules-extra | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:9 | libperf | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | perf | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:9 | perf | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:8 | python3-perf | 4.18.0-553.8.1.el8_10 | ALSA-2024:4211 |
| AlmaLinux:9 | python3-perf | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:9 | rtla | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux:9 | rv | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| Rocky Linux:8 | kernel | 0:4.18.0-553.8.1.el8_10 | RLSA-2024:4211 |
| Rocky Linux:8 | kernel-rt | 0:4.18.0-553.8.1.rt7.349.el8_10 | RLSA-2024:4352 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2020-26555 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2020-26555 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2020-26555 |
Affected products (as reported)
References
- https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security/ x_refsource_MISC
- https://kb.cert.org/vuls/id/799380 x_refsource_MISC
- FEDORA-2021-a35b44fd9f vendor-advisory, x_refsource_FEDORA
- https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00520.html x_refsource_CONFIRM
- https://www.kb.cert.org/vuls/id/799380