Description
Improper buffer restrictions in BlueZ may allow an unauthenticated user to potentially enable denial of service via adjacent access. This affects all Linux kernel versions that support BlueZ.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | BlueZ Advisory | all Linux kernel versions that support BlueZ | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 5.7.17-1 | — |
| Debian 13 | linux | 5.7.17-1 | — |
| Debian 12 | linux | 5.7.17-1 | — |
| Debian 9 | linux | 4.9.240-1 | DLA-2420-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Nvidia-BlueField 22.04 LTS | linux-bluefield | 5.15.0-1058.60 | — |
| Ubuntu 24.04 LTS | linux | 6.8.0-35.35 | — |
| Ubuntu 24.04 LTS | linux-aws | 6.8.0-1009.9 | — |
| Ubuntu 24.04 LTS | linux-azure | 6.8.0-1008.8 | — |
| Ubuntu 24.04 LTS | linux-gcp | 6.8.0-1008.9 | — |
| Ubuntu 24.04 LTS | linux-gke | 6.8.0-1004.7 | — |
| Ubuntu 24.04 LTS | linux-ibm +2 | 6.8.0-1006.6 | — |
| Ubuntu 24.04 LTS | linux-raspi | 6.8.0-1005.5 | — |
| Ubuntu 24.04 LTS | linux-riscv +1 | 6.8.0-35.35.1 | — |
| Ubuntu 22.04 LTS | linux | 5.15.0-130.140 | USN-7179-1 |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1076.83 | USN-7179-2 |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1078.87 | USN-7186-2 |
| Ubuntu 22.04 LTS | linux-azure-fde | 5.15.0-1078.87.1 | — |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1074.83 | USN-7179-2 |
| Ubuntu 22.04 LTS | linux-gke | 5.15.0-1072.78 | USN-7179-3 |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1057.64 | USN-7179-1 |
| Ubuntu 22.04 LTS | linux-ibm | 5.15.0-1067.70 | USN-7179-1 |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1071.77 | USN-7186-1 |
| Ubuntu 22.04 LTS | linux-kvm | 5.15.0-1071.76 | USN-7179-1 |
| Ubuntu 22.04 LTS | linux-lowlatency | 5.15.0-128.138 | USN-7179-1 |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1070.71 | USN-7179-2 |
| Ubuntu 22.04 LTS | linux-nvidia-tegra | 5.15.0-1032.32 | — |
| Ubuntu 22.04 LTS | linux-nvidia-tegra-igx | 5.15.0-1020.20 | — |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1073.79 | USN-7179-2 |
| Ubuntu 22.04 LTS | linux-raspi | 5.15.0-1070.73 | USN-7179-2 |
| Ubuntu 22.04 LTS | linux-riscv +1 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-xilinx-zynqmp | 5.15.0-1041.45 | USN-7179-4 |
| Ubuntu 20.04 LTS | linux | 5.4.0-52.57 | — |
| Ubuntu 20.04 LTS | linux-aws-5.15 | 5.15.0-1075.82~20.04.1 | USN-7179-2 |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1078.87~20.04.1 | USN-7194-1 |
| Ubuntu 20.04 LTS | linux-gcp-5.15 | 5.15.0-1074.83~20.04.1 | USN-7179-2 |
| Ubuntu 20.04 LTS | linux-gke +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-hwe-5.15 | 5.15.0-130.140~20.04.1 | USN-7179-2 |
| Ubuntu 20.04 LTS | linux-ibm-5.15 | 5.15.0-1067.70~20.04.1 | USN-7179-1 |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1071.77~20.04.1 | USN-7186-2 |
| Ubuntu 20.04 LTS | linux-lowlatency-hwe-5.15 | 5.15.0-128.138~20.04.1 | USN-7179-1 |
| Ubuntu 20.04 LTS | linux-nvidia-tegra-5.15 | 5.15.0-1032.32~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-oem-5.6 | 5.6.0-1048.52 | USN-4752-1 |
| Ubuntu 20.04 LTS | linux-oracle-5.15 | 5.15.0-1072.78~20.04.1 | USN-7179-1 |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1022.25 | — |
| Ubuntu 20.04 LTS | linux-riscv | 5.4.0-34.38 | — |
| Ubuntu 20.04 LTS | linux-riscv-5.15 | 5.15.0-1070.74~20.04.1 | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-122.124 | — |
| Ubuntu 18.04 LTS | linux-hwe +1 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-hwe-5.4 | 5.4.0-52.57~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-oem-osp1 | 5.0.0-1071.77 | USN-4592-1 |
| Ubuntu 18.04 LTS | linux-raspi-5.4 | 5.4.0-1022.25~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-raspi2-5.3 | 5.3.0-1036.38 | USN-4592-1 |
Show 15 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-122.124~16.04.1 | — |
| Ubuntu Pro Realtime 24.04 LTS | linux-raspi-realtime | 6.8.0-2004.4 | — |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime | 6.8.1-1002.2 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-intel-iot-realtime | 5.15.0-1071.73 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1075.83 | — |
| Ubuntu Pro FIPS 20.04 LTS | linux-aws-fips +2 | No fix yet | — |
| Ubuntu Pro FIPS 18.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS 16.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-aws-fips | 5.15.0-1076.83+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-azure-fips | 5.15.0-1078.87+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-fips | 5.15.0-128.138+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-gcp-fips | 5.15.0-1073.81+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-aws-fips | 5.4.0-1069.73+fips2 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-azure-fips | 5.4.0-1073.76+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-gcp-fips | 5.4.0-1067.71~20.04.1 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-aws-fips | 4.15.0-2031.32 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2013.15 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips | 4.15.0-1045.52 | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1108.115 | — |
| Ubuntu Pro FIPS-preview 22.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro 20.04 LTS | linux | 5.4.0-52.57 | LSN-0073-1 |
| Ubuntu Pro 20.04 LTS | linux-aws +2 | No fix yet | LSN-0073-1 |
| Ubuntu Pro 18.04 LTS | linux | 4.15.0-122.124 | LSN-0073-1 |
| Ubuntu Pro 18.04 LTS | linux-aws | No fix yet | LSN-0073-1 |
| Ubuntu Pro 18.04 LTS | linux-oem | 4.15.0-1100.110 | LSN-0073-1 |
| Ubuntu Pro 16.04 LTS | linux | 4.4.0-262.296 | USN-7183-1 |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-262.296~14.04.1 | USN-7183-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | kernel-rt +12 | 4.18.0-240.1.1.rt7.55.el8_3 | RHSA-2020:4686 |
| RHEL 8 | perf +26 | 4.18.0-240.1.1.el8_3 | RHSA-2020:4685 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | sca-patterns-base | 1.5.0-150300.10.3.1 | SUSE-FU-2022:4496-1 |
| SLES 15 SP3 | sca-patterns-hae | 1.5.1-150300.10.3.1 | SUSE-FU-2022:4496-1 |
| SLES 15 SP3 | sca-patterns-sle11 | 1.5.1-150300.18.3.1 | SUSE-FU-2022:4496-1 |
| SLES 15 SP3 | sca-patterns-sle12 | 1.5.1-150300.3.3.1 | SUSE-FU-2022:4496-1 |
| SLES 15 SP3 | sca-patterns-sle15 | 1.5.1-150300.14.3.1 | SUSE-FU-2022:4496-1 |
| SLES 15 SP3 | sca-patterns-suma | 1.5.0-150300.9.3.1 | SUSE-FU-2022:4496-1 |
| SLES 15 SP3 | sca-server-report | 1.5.1-150300.11.3.1 | SUSE-FU-2022:4496-1 |
| SLES 15 SP2 | kernel-azure +2 | 5.3.18-18.24.1 | SUSE-SU-2020:3491-1 |
| SLES 15 SP2 | kernel-default-base | 5.3.18-24.29.2.9.9.3 | SUSE-SU-2020:2980-1 |
| SLES 15 SP2 | kernel-docs +5 | 5.3.18-24.29.2 | SUSE-SU-2020:2980-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLE Live Patching 15 SP2 | kernel-default | 5.3.18-24.29.2 | SUSE-SU-2020:2980-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_0 | 4-11.2 | SUSE-SU-2020:3389-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_1 | 4-2.1 | SUSE-SU-2020:3389-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_5 | 1-5.3.3 | SUSE-SU-2020:2980-1 |
| SUSE Real Time Module 15 SP2 | kernel-rt +3 | 5.3.18-16.1 | SUSE-SU-2020:3522-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.3 | sca-patterns-base | 1.5.0-150300.10.3.1 | SUSE-FU-2022:4496-1 |
| openSUSE Leap 15.3 | sca-patterns-hae | 1.5.1-150300.10.3.1 | SUSE-FU-2022:4496-1 |
| openSUSE Leap 15.3 | sca-patterns-sle11 | 1.5.1-150300.18.3.1 | SUSE-FU-2022:4496-1 |
| openSUSE Leap 15.3 | sca-patterns-sle12 | 1.5.1-150300.3.3.1 | SUSE-FU-2022:4496-1 |
| openSUSE Leap 15.3 | sca-patterns-sle15 | 1.5.1-150300.14.3.1 | SUSE-FU-2022:4496-1 |
| openSUSE Leap 15.3 | sca-patterns-suma | 1.5.0-150300.9.3.1 | SUSE-FU-2022:4496-1 |
| openSUSE Leap 15.3 | sca-server-report | 1.5.1-150300.11.3.1 | SUSE-FU-2022:4496-1 |
| openSUSE Leap 15.2 | kernel-debug +5 | 5.3.18-lp152.47.2 | openSUSE-SU-2020:1698-1 |
| openSUSE Leap 15.2 | kernel-default-base | 5.3.18-lp152.50.1.lp152.8.10.1 | openSUSE-SU-2020:2112-1 |
| openSUSE Leap 15.2 | kernel-docs +2 | 5.3.18-lp152.47.1 | openSUSE-SU-2020:1698-1 |
| openSUSE Leap 15.2 | kernel-rt +3 | 5.3.18-lp152.3.5.1 | openSUSE-SU-2021:0242-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | kernel-livepatch-4.14.203-156.332 | 1.0-0.amzn2 | ALAS2-2020-1556 |
| Amazon Linux 2 | perf +8 | 4.14.203-156.332.amzn2 | ALAS2-2020-1556 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | perf +19 | 4.18.0-240.1.1.el8_3 | ELSA-2020-4685 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 2 repositories
-
AbrarKhan/Linux-4.19.72_CVE-2020-24490 ★ 0 · Apr 29, 2024
-
AbrarKhan/linux_CVE-2020-24490-beforePatch ★ 0 · Apr 29, 2024
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 25
- LSN-0073-1 Kernel Live Patch Security Notice Ubuntu Security Notices (USN) · Nov 10, 2026
- USN-7183-1 linux, linux-lts-xenial vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7186-2 linux-azure, linux-intel-iotg-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7194-1 linux-azure-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7186-1 linux-intel-iotg vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7179-1 linux, linux-gkeop, linux-ibm, linux-ibm-5.15, linux-kvm, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-oracle-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7179-2 linux-aws, linux-aws-5.15, linux-gcp, linux-gcp-5.15, linux-hwe-5.15, linux-nvidia, linux-oracle, linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7179-3 linux-gke vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7179-4 linux-xilinx-zynqmp vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- RHSA-2020:4686 Red Hat Security Advisory: kernel-rt security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2020:4685 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- USN-4752-1 linux-oem-5.6 vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-4592-1 linux-oem-osp1, linux-raspi2-5.3 vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- DLA-2420-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2021:0242-1 Security update for RT kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:2980-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3522-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-FU-2022:4496-1 Feature update for SCA patterns SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3491-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3389-1 Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:1698-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:2112-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 7, 2025
- WID-SEC-2024-3745 Linux Kernel - BlueZ: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 27, 2025
- ELSA-2020-4685 Important: kernel security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Nov 13, 2020
- ALAS2-2020-1556 Important: kernel security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Nov 11, 2020