Description
In the Linux kernel, the following vulnerability has been resolved:
net: fix possible store tearing in neigh_periodic_work()
While looking at a related syzbot report involving neigh_periodic_work(),
I found that I forgot to add an annotation when deleting an
RCU protected item from a list.
Readers use rcu_deference(*np), we need to use either
rcu_assign_pointer() or WRITE_ONCE() on writer side
to prevent store tearing.
I use rcu_assign_pointer() to have lockdep support,
this was the choice made in neigh_flush_dev().
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 2.6.37 | 5.4.258 |
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 | 6.5.8-1 | — |
| Debian 13 | linux | 6.5.8-1 | — |
| Debian 12 | linux | 6.1.64-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Nvidia-BlueField 22.04 LTS | linux-bluefield | 5.15.0-1035.37 | — |
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux +1 | 5.15.0-94.104 | — |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1053.58 | — |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1056.64 | — |
| Ubuntu 22.04 LTS | linux-azure-fde | 5.15.0-1056.64.1 | — |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1051.59 | — |
| Ubuntu 22.04 LTS | linux-gke +1 | 5.15.0-1050.55 | — |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1036.42 | — |
| Ubuntu 22.04 LTS | linux-ibm +1 | 5.15.0-1046.49 | — |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1047.53 | — |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1044.44 | — |
| Ubuntu 22.04 LTS | linux-nvidia-6.5 | 6.5.0-1014.14 | — |
| Ubuntu 22.04 LTS | linux-nvidia-tegra | 5.15.0-1022.22 | — |
| Ubuntu 22.04 LTS | linux-nvidia-tegra-igx | 5.15.0-1009.9 | — |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1051.57 | — |
| Ubuntu 22.04 LTS | linux-riscv +28 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-xilinx-zynqmp | 5.15.0-1027.31 | — |
| Ubuntu 20.04 LTS | linux | 5.4.0-171.189 | — |
| Ubuntu 20.04 LTS | linux-aws | 5.4.0-1118.128 | — |
| Ubuntu 20.04 LTS | linux-aws-5.15 | 5.15.0-1053.58~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1123.130 | — |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1056.64~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-bluefield | 5.4.0-1078.84 | — |
| Ubuntu 20.04 LTS | linux-gcp | 5.4.0-1122.131 | — |
| Ubuntu 20.04 LTS | linux-gcp-5.15 | 5.15.0-1051.59~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-gke +26 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gkeop | 5.4.0-1085.89 | — |
| Ubuntu 20.04 LTS | linux-gkeop-5.15 | 5.15.0-1036.42~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-hwe-5.15 +1 | 5.15.0-94.104~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-ibm | 5.4.0-1065.70 | — |
| Ubuntu 20.04 LTS | linux-ibm-5.15 | 5.15.0-1046.49~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1048.54~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-iot | 5.4.0-1030.31 | — |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1106.113 | — |
| Ubuntu 20.04 LTS | linux-nvidia-tegra-5.15 | 5.15.0-1022.22~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-oracle | 5.4.0-1117.126 | — |
| Ubuntu 20.04 LTS | linux-oracle-5.15 | 5.15.0-1051.57~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1102.114 | — |
| Ubuntu 20.04 LTS | linux-riscv-5.15 | 5.15.0-1049.53~20.04.2 | — |
| Ubuntu 20.04 LTS | linux-xilinx-zynqmp | 5.4.0-1037.41 | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
Show 13 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-intel-iot-realtime | 5.15.0-1046.48 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1054.60 | — |
| Ubuntu Pro FIPS 20.04 LTS | linux-fips +3 | 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 | 5.15.0-1053.58+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-fips | 5.15.0-94.104+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-gcp-fips | 5.15.0-1055.63+fips2 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-aws-fips | 5.4.0-1118.128+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-azure-fips | 5.4.0-1123.130+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-fips | 5.4.0-1092.102 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-gcp-fips | 5.4.0-1122.131+fips1 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-aws-fips | 4.15.0-2116.122 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2095.101 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips | 4.15.0-1133.144 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-gcp-fips | 4.15.0-2079.85 | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1111.118 | — |
| Ubuntu Pro FIPS-preview 22.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | linux | 4.15.0-235.247 | USN-7342-1 |
| Ubuntu Pro 18.04 LTS | linux-aws | 4.15.0-1178.191 | USN-7344-1 |
| Ubuntu Pro 18.04 LTS | linux-aws-5.4 | 5.4.0-1118.128~18.04.1 | — |
| Ubuntu Pro 18.04 LTS | linux-azure-4.15 | 4.15.0-1186.201 | USN-7344-2 |
| Ubuntu Pro 18.04 LTS | linux-azure-5.4 | 5.4.0-1123.130~18.04.1 | — |
| Ubuntu Pro 18.04 LTS | linux-gcp-4.15 | 4.15.0-1171.188 | USN-7344-1 |
| Ubuntu Pro 18.04 LTS | linux-gcp-5.4 | 5.4.0-1122.131~18.04.1 | — |
| Ubuntu Pro 18.04 LTS | linux-hwe-5.4 | 5.4.0-171.189~18.04.1 | — |
| Ubuntu Pro 18.04 LTS | linux-ibm-5.4 | 5.4.0-1065.70~18.04.1 | — |
| Ubuntu Pro 18.04 LTS | linux-kvm | 4.15.0-1161.166 | USN-7344-1 |
| Ubuntu Pro 18.04 LTS | linux-oracle | 4.15.0-1140.151 | USN-7344-1 |
| Ubuntu Pro 18.04 LTS | linux-oracle-5.4 | 5.4.0-1117.126~18.04.1 | — |
| Ubuntu Pro 18.04 LTS | linux-raspi-5.4 | 5.4.0-1102.114~18.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux | 4.4.0-266.300 | USN-7332-1 |
| Ubuntu Pro 16.04 LTS | linux-aws | 4.4.0-1179.194 | USN-7332-1 |
| Ubuntu Pro 16.04 LTS | linux-aws-hwe | 4.15.0-1178.191~16.04.1 | USN-7344-1 |
| Ubuntu Pro 16.04 LTS | linux-azure | 4.15.0-1186.201~16.04.1 | USN-7344-2 |
| Ubuntu Pro 16.04 LTS | linux-gcp | 4.15.0-1171.188~16.04.1 | USN-7344-1 |
| Ubuntu Pro 16.04 LTS | linux-hwe | 4.15.0-235.247~16.04.1 | USN-7342-1 |
| Ubuntu Pro 16.04 LTS | linux-kvm | 4.4.0-1142.153 | USN-7332-2 |
| Ubuntu Pro 16.04 LTS | linux-oracle | 4.15.0-1140.151~16.04.1 | USN-7344-1 |
| Ubuntu Pro 14.04 LTS | linux | No fix yet | — |
| Ubuntu Pro 14.04 LTS | linux-aws | 4.4.0-1141.147 | USN-7332-1 |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1186.201~14.04.1 | USN-7344-2 |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-266.300~14.04.1 | USN-7332-3 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | bpftool | 7.3.0-427.13.1.el9_4 | RHSA-2024:2394 |
| RHEL 9 | rv +64 | 5.14.0-427.13.1.el9_4 | RHSA-2024:2394 |
| RHEL 8 | kernel-rt +12 | 4.18.0-553.22.1.rt7.363.el8_10 | RHSA-2024:7001 |
| RHEL 8 | perf +26 | 4.18.0-553.22.1.el8_10 | RHSA-2024:7000 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.2 EUS | bpftool | 7.0.0-284.92.1.el9_2 | RHSA-2024:9497 |
| RHEL 9.2 EUS | kernel-rt +14 | 5.14.0-284.92.1.rt14.377.el9_2 | RHSA-2024:9498 |
| RHEL 9.2 EUS | perf +47 | 5.14.0-284.92.1.el9_2 | RHSA-2024:9497 |
| RHEL 8.8 EUS | perf +26 | 4.18.0-477.74.1.el8_8 | RHSA-2024:6993 |
| RHEL 8.6 TUS | perf +17 | 4.18.0-372.124.1.el8_6 | RHSA-2024:6998 |
| RHEL 8.6 E4S | perf +25 | 4.18.0-372.124.1.el8_6 | RHSA-2024:6998 |
| RHEL 8.6 AUS | perf +17 | 4.18.0-372.124.1.el8_6 | RHSA-2024:6998 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | bpftool | 7.3.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux 9 | rv +60 | 5.14.0-427.13.1.el9_4 | ALSA-2024:2394 |
| AlmaLinux 8 | kernel-rt +11 | 4.18.0-553.22.1.rt7.363.el8_10 | ALSA-2024:7001 |
| AlmaLinux 8 | perf +24 | 4.18.0-553.22.1.el8_10 | ALSA-2024:7000 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | kernel | 4.18.0-553.22.1.el8_10 | RLSA-2024:7000 |
| Rocky Linux 8 | kernel-rt | 4.18.0-553.22.1.rt7.363.el8_10 | RLSA-2024:7001 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | kernel-livepatch-6.1.59-84.139 | 1.0-0.amzn2023 | ALAS2023-2023-422 |
| Amazon Linux 2023 | perf +13 | 6.1.59-84.139.amzn2023 | ALAS2023-2023-422 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | bpftool | 7.3.0-427.13.1.el9_4 | ELSA-2024-2394 |
| Oracle Linux 9 | rv +27 | 5.14.0-427.13.1.el9_4 | ELSA-2024-2394 |
| Oracle Linux 8 | perf +19 | 4.18.0-553.22.1.el8_10 | ELSA-2024-7000 |
Advisories 23
- RHSA-2024:6993 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2024:6998 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2024:7000 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2024:7001 Red Hat Security Advisory: kernel-rt security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- USN-7332-1 linux, linux-aws vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7344-1 linux-aws, linux-aws-hwe, linux-gcp, linux-gcp-4.15, linux-kvm, linux-oracle vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7344-2 linux-azure, linux-azure-4.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7342-1 linux, linux-hwe vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7332-2 linux-kvm vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7332-3 linux-lts-xenial vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- ALSA-2024:2394 Important: kernel security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2024:7001 Important: kernel-rt security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2024:7000 Important: kernel security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2024:9498 Red Hat Security Advisory: kernel-rt security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2024:9497 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2024:2394 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- WID-SEC-2024-0534 Linux Kernel: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 3, 2026
- WID-SEC-2024-1226 Red Hat OpenShift: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 11, 2026
- RLSA-2024:7001 Important: kernel-rt security update Rocky Linux Security Advisories · Feb 5, 2026
- RLSA-2024:7000 Important: kernel security update Rocky Linux Security Advisories · May 7, 2025
- ELSA-2024-7000 Important: kernel security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Sep 24, 2024
- ALAS2023-2023-422 Important: kernel security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Jul 3, 2024
- ELSA-2024-2394 Important: kernel security, bug fix, and enhancement update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · May 2, 2024
References
- https://git.kernel.org/stable/c/95eabb075a5902f4c0834ab1fb12dc35730c05af
- https://git.kernel.org/stable/c/2ea52a2fb8e87067e26bbab4efb8872639240eb0
- https://git.kernel.org/stable/c/147d89ee41434b97043c2dcb17a97dc151859baa
- https://git.kernel.org/stable/c/f82aac8162871e87027692b36af335a2375d4580
- https://git.kernel.org/stable/c/a75152d233370362eebedb2643592e7c883cc9fc
- https://git.kernel.org/stable/c/25563b581ba3a1f263a00e8c9a97f5e7363be6fd