Description
An issue was discovered in the Linux kernel before 5.8.1. net/bluetooth/hci_event.c has a slab out-of-bounds read in hci_extended_inquiry_result_evt, aka CID-51c19bf3d5cf.
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 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux-realtime +1 | No fix yet | — |
| Ubuntu 20.04 LTS | linux | 5.4.0-48.52 | — |
| Ubuntu 20.04 LTS | linux-aws +2 | 5.4.0-1025.25 | — |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1026.26 | — |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1024.24 | — |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1019.21 | — |
| Ubuntu 20.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-118.119 | — |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1083.87 | — |
| Ubuntu 18.04 LTS | linux-aws-5.4 +2 | 5.4.0-1025.25~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-azure-4.15 | 4.15.0-1096.106 | — |
| Ubuntu 18.04 LTS | linux-azure-5.4 | 5.4.0-1026.26~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp +13 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp-4.15 | 4.15.0-1084.95 | — |
| Ubuntu 18.04 LTS | linux-hwe-5.4 | 5.4.0-48.52~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1075.76 | — |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1054.58 | — |
| Ubuntu 18.04 LTS | linux-raspi-5.4 | 5.4.0-1019.21~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1071.75 | — |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1087.95 | — |
| Ubuntu 16.04 LTS | linux | 4.4.0-190.220 | — |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1114.127 | — |
| Ubuntu 16.04 LTS | linux-aws-hwe | 4.15.0-1083.87~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1096.106~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1084.95~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-118.119~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1080.87 | — |
| Ubuntu 16.04 LTS | linux-oracle | 4.15.0-1054.58~16.04.1 | — |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| 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 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 | 4.15.0-2027.27 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2009.10 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips | 4.15.0-1041.46 | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1046.51 | — |
| Ubuntu Pro 14.04 LTS | linux | No fix yet | — |
| Ubuntu Pro 14.04 LTS | linux-aws | 4.4.0-1078.82 | — |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1096.106~14.04.1 | — |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-190.220~14.04.1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | kernel-rt +12 | 4.18.0-348.rt7.130.el8 | RHSA-2021:4140 |
| RHEL 8 | perf +26 | 4.18.0-348.el8 | RHSA-2021:4356 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | kernel-tools-libs-devel | 4.18.0-348.el8 | ALSA-2021:4356 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | kernel-64kb +7 | 5.3.18-59.10.1 | SUSE-SU-2021:2184-1 |
| SLES 15 SP3 | kernel-azure +2 | 5.3.18-38.8.1 | SUSE-SU-2021:2202-1 |
| SLES 15 SP3 | kernel-default-base | 5.3.18-59.10.1.18.4.2 | SUSE-SU-2021:2184-1 |
| SLES 15 SP2 | kernel-azure +2 | 5.3.18-18.53.1 | SUSE-SU-2021:2303-1 |
| SLES 15 SP2 | kernel-default-base | 5.3.18-24.70.1.9.32.1 | SUSE-SU-2021:2325-1 |
| SLES 15 SP2 | kernel-docs +5 | 5.3.18-24.70.1 | SUSE-SU-2021:2325-1 |
| SLES 15 SP1 | kernel-docs +5 | 4.12.14-197.99.1 | SUSE-SU-2021:2427-1 |
| SLES 15 | kernel-docs +6 | 4.12.14-150.75.1 | SUSE-SU-2021:2421-1 |
| SLES 12 SP5 | kernel-azure +2 | 4.12.14-16.62.1 | SUSE-SU-2021:2644-1, SUSE-SU-2021:2321-1 |
| SLES 12 SP5 | kernel-docs +4 | 4.12.14-122.77.1 | SUSE-SU-2021:2647-1, SUSE-SU-2021:2324-1 |
Show 29 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP4 | kernel-syms +2 | 4.12.14-95.80.1 | SUSE-SU-2021:2422-1 |
| SLES 12 SP3 | kernel-syms +2 | 4.4.180-94.147.1 | SUSE-SU-2021:2451-1 |
| SLES 12 SP3 | kgraft-patch-SLE12-SP3_Update_40 | 1-4.3.1 | SUSE-SU-2021:2451-1 |
| SLES 12 SP2 | kernel-syms +2 | 4.4.121-92.158.1 | SUSE-SU-2021:2406-1 |
| SLES 11 SP4 | kernel-ec2 +8 | 3.0.101-108.129.1 | SUSE-SU-2021:14764-1 |
| SLES for SAP 15 SP1 | kernel-docs +4 | 4.12.14-197.99.1 | SUSE-SU-2021:2427-1 |
| SLES for SAP 15 | kernel-docs +5 | 4.12.14-150.75.1 | SUSE-SU-2021:2421-1 |
| SLES for SAP 12 SP5 | kernel-azure +2 | 4.12.14-16.62.1 | SUSE-SU-2021:2644-1, SUSE-SU-2021:2321-1 |
| SLES for SAP 12 SP5 | kernel-syms +2 | 4.12.14-122.77.1 | SUSE-SU-2021:2647-1, SUSE-SU-2021:2324-1 |
| SLES for SAP 12 SP4 | kernel-syms +2 | 4.12.14-95.80.1 | SUSE-SU-2021:2422-1 |
| SLES for SAP 12 SP3 | kernel-syms +2 | 4.4.180-94.147.1 | SUSE-SU-2021:2451-1 |
| SLES for SAP 12 SP3 | kgraft-patch-SLE12-SP3_Update_40 | 1-4.3.1 | SUSE-SU-2021:2451-1 |
| SLE Real Time 12 SP5 | kernel-rt +3 | 4.12.14-10.49.1 | SUSE-SU-2021:2643-1, SUSE-SU-2021:2349-1 |
| SLE Micro 5.0 | kernel-default | 5.3.18-24.70.1 | SUSE-SU-2021:2325-1 |
| SLE Micro 5.0 | kernel-default-base | 5.3.18-24.70.1.9.32.1 | SUSE-SU-2021:2325-1 |
| SLE Micro 5.0 | kernel-rt | 4.12.14-10.49.1 | SUSE-SU-2021:2349-1 |
| SLE Live Patching 15 SP3 | kernel-default | 5.3.18-59.10.1 | SUSE-SU-2021:2184-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_2 | 1-7.5.1 | SUSE-SU-2021:2184-1 |
| SLE Live Patching 15 SP2 | kernel-default | 5.3.18-24.70.1 | SUSE-SU-2021:2325-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_16 | 1-5.3.1 | SUSE-SU-2021:2325-1 |
| SLE Live Patching 15 SP1 | kernel-default | 4.12.14-197.99.1 | SUSE-SU-2021:2427-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_26 | 1-3.3.3 | SUSE-SU-2021:2427-1 |
| SLE Live Patching 15 | kernel-default | 4.12.14-150.75.1 | SUSE-SU-2021:2421-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_25 | 1-1.3.1 | SUSE-SU-2021:2421-1 |
| SLE Live Patching 12 SP5 | kernel-default | 4.12.14-122.77.1 | SUSE-SU-2021:2647-1, SUSE-SU-2021:2324-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_20 +1 | 1-8.3.1 | SUSE-SU-2021:2647-1, SUSE-SU-2021:2324-1 |
| SLE Live Patching 12 SP4 | kernel-default | 4.12.14-95.80.1 | SUSE-SU-2021:2422-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_22 | 1-6.3.1 | SUSE-SU-2021:2422-1 |
| SLE HPC 15 SP1 | kernel-docs +4 | 4.12.14-197.99.1 | SUSE-SU-2021:2427-1 |
| SLE HPC 15 | kernel-docs +5 | 4.12.14-150.75.1 | SUSE-SU-2021:2421-1 |
| SUSE Real Time Module 15 SP2 | kernel-rt +1 | 5.3.18-42.2 | SUSE-SU-2021:2426-1 |
| SUSE Real Time Module 15 SP2 | kernel-syms-rt +1 | 5.3.18-42.1 | SUSE-SU-2021:2426-1 |
| SUSE Real Time Module 15 SP2 | lttng-modules | 2.10.10-1.5.1 | SUSE-SU-2021:2426-1 |
| SUSE Real Time Module 15 SP2 | oracleasm | 2.0.8-1.3.1 | SUSE-SU-2021:2426-1 |
| SUSE OpenStack Cloud Crowbar 9 | kernel-syms +2 | 4.12.14-95.80.1 | SUSE-SU-2021:2422-1 |
| SUSE OpenStack Cloud Crowbar 8 | kernel-syms +2 | 4.4.180-94.147.1 | SUSE-SU-2021:2451-1 |
| SUSE OpenStack Cloud Crowbar 8 | kgraft-patch-SLE12-SP3_Update_40 | 1-4.3.1 | SUSE-SU-2021:2451-1 |
| SUSE OpenStack Cloud 9 | kernel-syms +2 | 4.12.14-95.80.1 | SUSE-SU-2021:2422-1 |
| SUSE OpenStack Cloud 8 | kernel-syms +2 | 4.4.180-94.147.1 | SUSE-SU-2021:2451-1 |
| SUSE OpenStack Cloud 8 | kgraft-patch-SLE12-SP3_Update_40 | 1-4.3.1 | SUSE-SU-2021:2451-1 |
| SUSE Manager Server 4.0 | kernel-docs +5 | 4.12.14-197.99.1 | SUSE-SU-2021:2427-1 |
| SUSE Manager Retail Branch Server 4.0 | kernel-docs +4 | 4.12.14-197.99.1 | SUSE-SU-2021:2427-1 |
| SUSE Manager Proxy 4.0 | kernel-docs +4 | 4.12.14-197.99.1 | SUSE-SU-2021:2427-1 |
| SUSE HPE Helion OpenStack 8 | kernel-syms +2 | 4.4.180-94.147.1 | SUSE-SU-2021:2451-1 |
| SUSE HPE Helion OpenStack 8 | kgraft-patch-SLE12-SP3_Update_40 | 1-4.3.1 | SUSE-SU-2021:2451-1 |
| SUSE Enterprise Storage 6 | kernel-docs +4 | 4.12.14-197.99.1 | SUSE-SU-2021:2427-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.3 | kernel-64kb +6 | 5.3.18-59.10.1 | openSUSE-SU-2021:2184-1 |
| openSUSE Leap 15.3 | kernel-azure +2 | 5.3.18-38.8.1 | openSUSE-SU-2021:2202-1 |
| openSUSE Leap 15.3 | kernel-debug +4 | 4.12.14-197.99.1 | openSUSE-SU-2021:2427-1, openSUSE-SU-2021:2184-1 |
| openSUSE Leap 15.3 | kernel-default-base | 5.3.18-59.10.1.18.4.2 | openSUSE-SU-2021:2184-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | perf +19 | 4.18.0-348.el8 | ELSA-2021-4356 |
| Oracle Linux 7 | kernel-uek +5 | 4.1.12-124.52.4.el7uek | ELSA-2021-9346 |
Advisories 25
- ALSA-2021:4356 Moderate: kernel security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2021:4356 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 2, 2026
- RHSA-2021:4140 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Aug 14, 2026
- SUSE-SU-2021:2451-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2426-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2422-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2647-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2325-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2644-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2202-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2643-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2421-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2349-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2321-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:2184-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2324-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2303-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2184-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:2427-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2406-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:2427-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:2202-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 7, 2025
- SUSE-SU-2021:14764-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2021-4356 Moderate: kernel security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Nov 16, 2021
- ELSA-2021-9346 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jul 2, 2021
References
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.1
- https://syzkaller.appspot.com/text?tag=ReproC&x=15ca2f46900000
- https://sites.google.com/view/syzscope/kasan-slab-out-of-bounds-read-in-hci_extended_inquiry_result_evt
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=51c19bf3d5cfaa66571e4b88ba2a6f6295311101
- https://syzkaller.appspot.com/bug?id=4bf11aa05c4ca51ce0df86e500fce486552dc8d2