Vulnerability · Published Oct 9, 2024 · Assigned by Linux
CVE-2024-47668lib/generic-radix-tree.c: Fix rare race in __genradix_ptr_alloc()
High 7.8
In plain English
A high-severity security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.2%top 93.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
In the Linux kernel, the following vulnerability has been resolved: lib/generic-radix-tree.c: Fix rare race in __genradix_ptr_alloc() If we need to increase the tree depth, allocate a new node, and then race with another thread that increased the tree depth before us, we'll still have a preallocated node that might be used later. If we then use that node for a new non-root node, it'll still have a pointer to the old root instead of being zeroed - fix this by zeroing it in the cmpxchg failure path.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | bpftool | 4.18.0-553.27.1.el8_10 | ALSA-2024:8856 |
| AlmaLinux:8 | kernel | 4.18.0-553.27.1.el8_10 | ALSA-2024:8856 |
| AlmaLinux:8 | kernel-abi-stablelists | 4.18.0-553.27.1.el8_10 | ALSA-2024:8856 |
| AlmaLinux:8 | kernel-core | 4.18.0-553.27.1.el8_10 | ALSA-2024:8856 |
| AlmaLinux:8 | kernel-cross-headers | 4.18.0-553.27.1.el8_10 | ALSA-2024:8856 |
| AlmaLinux:8 | kernel-debug | 4.18.0-553.27.1.el8_10 | ALSA-2024:8856 |
| AlmaLinux:8 | kernel-debug-core | 4.18.0-553.27.1.el8_10 | ALSA-2024:8856 |
| AlmaLinux:8 | kernel-debug-devel | 4.18.0-553.27.1.el8_10 | ALSA-2024:8856 |
| AlmaLinux:8 | kernel-debug-modules | 4.18.0-553.27.1.el8_10 | ALSA-2024:8856 |
| AlmaLinux:8 | kernel-debug-modules-extra | 4.18.0-553.27.1.el8_10 | ALSA-2024:8856 |
| AlmaLinux:8 | kernel-devel | 4.18.0-553.27.1.el8_10 | ALSA-2024:8856 |
| AlmaLinux:8 | kernel-doc | 4.18.0-553.27.1.el8_10 | ALSA-2024:8856 |
| AlmaLinux:8 | kernel-headers | 4.18.0-553.27.1.el8_10 | ALSA-2024:8856 |
| AlmaLinux:8 | kernel-modules | 4.18.0-553.27.1.el8_10 | ALSA-2024:8856 |
| AlmaLinux:8 | kernel-modules-extra | 4.18.0-553.27.1.el8_10 | ALSA-2024:8856 |
| AlmaLinux:8 | kernel-rt | 4.18.0-553.27.1.rt7.368.el8_10 | ALSA-2024:8870 |
| AlmaLinux:8 | kernel-rt-core | 4.18.0-553.27.1.rt7.368.el8_10 | ALSA-2024:8870 |
| AlmaLinux:8 | kernel-rt-debug | 4.18.0-553.27.1.rt7.368.el8_10 | ALSA-2024:8870 |
| AlmaLinux:8 | kernel-rt-debug-core | 4.18.0-553.27.1.rt7.368.el8_10 | ALSA-2024:8870 |
| AlmaLinux:8 | kernel-rt-debug-devel | 4.18.0-553.27.1.rt7.368.el8_10 | ALSA-2024:8870 |
| AlmaLinux:8 | kernel-rt-debug-modules | 4.18.0-553.27.1.rt7.368.el8_10 | ALSA-2024:8870 |
| AlmaLinux:8 | kernel-rt-debug-modules-extra | 4.18.0-553.27.1.rt7.368.el8_10 | ALSA-2024:8870 |
| AlmaLinux:8 | kernel-rt-devel | 4.18.0-553.27.1.rt7.368.el8_10 | ALSA-2024:8870 |
| AlmaLinux:8 | kernel-rt-modules | 4.18.0-553.27.1.rt7.368.el8_10 | ALSA-2024:8870 |
| AlmaLinux:8 | kernel-rt-modules-extra | 4.18.0-553.27.1.rt7.368.el8_10 | ALSA-2024:8870 |
| AlmaLinux:8 | kernel-tools | 4.18.0-553.27.1.el8_10 | ALSA-2024:8856 |
| AlmaLinux:8 | kernel-tools-libs | 4.18.0-553.27.1.el8_10 | ALSA-2024:8856 |
| AlmaLinux:8 | kernel-tools-libs-devel | 4.18.0-553.27.1.el8_10 | ALSA-2024:8856 |
| AlmaLinux:8 | kernel-zfcpdump | 4.18.0-553.27.1.el8_10 | ALSA-2024:8856 |
| AlmaLinux:8 | kernel-zfcpdump-core | 4.18.0-553.27.1.el8_10 | ALSA-2024:8856 |
| AlmaLinux:8 | kernel-zfcpdump-devel | 4.18.0-553.27.1.el8_10 | ALSA-2024:8856 |
| AlmaLinux:8 | kernel-zfcpdump-modules | 4.18.0-553.27.1.el8_10 | ALSA-2024:8856 |
| AlmaLinux:8 | kernel-zfcpdump-modules-extra | 4.18.0-553.27.1.el8_10 | ALSA-2024:8856 |
| AlmaLinux:8 | perf | 4.18.0-553.27.1.el8_10 | ALSA-2024:8856 |
| AlmaLinux:8 | python3-perf | 4.18.0-553.27.1.el8_10 | ALSA-2024:8856 |
| Debian:12 | linux | 6.1.112-1 | DEBIAN-CVE-2024-47668 |
| Debian:13 | linux | 6.10.11-1 | DEBIAN-CVE-2024-47668 |
| Debian:14 | linux | 6.10.11-1 | DEBIAN-CVE-2024-47668 |
| Rocky Linux:8 | kernel | 0:4.18.0-553.27.1.el8_10 | RLSA-2024:8856 |
| Rocky Linux:8 | kernel-rt | 0:4.18.0-553.27.1.rt7.368.el8_10 | RLSA-2024:8870 |
| Ubuntu:22.04:LTS | linux | 5.15.0-125.135 | UBUNTU-CVE-2024-47668 |
| Ubuntu:24.04:LTS | linux | 6.8.0-50.51 | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-allwinner-5.19 | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1072.78 | UBUNTU-CVE-2024-47668 |
| Ubuntu:24.04:LTS | linux-aws | 6.8.0-1020.22 | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-aws-5.19 | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-aws-6.2 | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-aws-6.5 | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-aws-6.8 | 6.8.0-1020.22~22.04.1 | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1075.84 | UBUNTU-CVE-2024-47668 |
| Ubuntu:24.04:LTS | linux-azure | 6.8.0-1020.23 | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-azure-5.19 | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-azure-6.2 | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-azure-6.5 | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-azure-6.8 | 6.8.0-1020.23~22.04.1 | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1076.85.1 | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-azure-fde-5.19 | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.2 | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1071.79 | UBUNTU-CVE-2024-47668 |
| Ubuntu:24.04:LTS | linux-gcp | 6.8.0-1019.21 | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-gcp-5.19 | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-gcp-6.2 | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-gcp-6.5 | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-gcp-6.8 | 6.8.0-1019.21~22.04.1 | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1069.75 | UBUNTU-CVE-2024-47668 |
| Ubuntu:24.04:LTS | linux-gke | 6.8.0-1015.19 | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1055.62 | UBUNTU-CVE-2024-47668 |
| Ubuntu:24.04:LTS | linux-gkeop | 6.8.0-1002.4 | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-hwe-6.2 | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-hwe-6.5 | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-hwe-6.8 | 6.8.0-50.51~22.04.1 | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1065.68 | UBUNTU-CVE-2024-47668 |
| Ubuntu:24.04:LTS | linux-ibm | 6.8.0-1017.17 | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-ibm-6.8 | 6.8.0-1017.17~22.04.1 | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1067.73 | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1069.74 | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-125.135 | UBUNTU-CVE-2024-47668 |
| Ubuntu:24.04:LTS | linux-lowlatency | 6.8.0-50.51.1 | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-5.19 | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.2 | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.5 | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.8 | 6.8.0-50.51.1~22.04.1 | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1067.68 | UBUNTU-CVE-2024-47668 |
| Ubuntu:24.04:LTS | linux-nvidia | 6.8.0-1019.21 | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-nvidia-6.2 | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-nvidia-6.5 | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-nvidia-6.8 | 6.8.0-1019.21~22.04.1 | UBUNTU-CVE-2024-47668 |
| Ubuntu:24.04:LTS | linux-nvidia-lowlatency | 6.8.0-1019.21.1 | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra | 5.15.0-1032.32 | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra-igx | 5.15.0-1020.20 | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-oem-6.1 | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-oem-6.5 | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:24.04:LTS | linux-oem-6.8 | 6.8.0-1018.18 | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1070.76 | UBUNTU-CVE-2024-47668 |
| Ubuntu:24.04:LTS | linux-oracle | 6.8.0-1017.18 | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-oracle-6.5 | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-oracle-6.8 | 6.8.0-1017.18~22.04.1 | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1065.68 | UBUNTU-CVE-2024-47668 |
| Ubuntu:24.04:LTS | linux-raspi | 6.8.0-1016.18 | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:24.04:LTS | linux-riscv | 6.8.0-50.51.1 | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-riscv-5.19 | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-riscv-6.5 | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-riscv-6.8 | 6.8.0-50.51.1~22.04.1 | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-starfive-5.19 | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-starfive-6.2 | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-starfive-6.5 | no fix listed | UBUNTU-CVE-2024-47668 |
| Ubuntu:24.04:LTS | linux-xilinx | 6.8.0-1017.18 | UBUNTU-CVE-2024-47668 |
| Ubuntu:22.04:LTS | linux-xilinx-zynqmp | 5.15.0-1038.42 | UBUNTU-CVE-2024-47668 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | ba20ba2e3743bac786dff777954c11930256075e – before 0f27f4f445390cb7f73d4209cb2bf32834dc53daba20ba2e3743bac786dff777954c11930256075e – before 99418ec776a39609f50934720419e0b464ca2283ba20ba2e3743bac786dff777954c11930256075e – before ad5ee9feebc2eb8cfc76ed74a2d6e55343b0e169ba20ba2e3743bac786dff777954c11930256075e – before ebeff038744c498a036e7a92eb8e433ae0a386d7ba20ba2e3743bac786dff777954c11930256075e – before d942e855324a60107025c116245095632476613eba20ba2e3743bac786dff777954c11930256075e – before 0f078f8ca93b28a34e20bd050f12cd4efeee7c0fba20ba2e3743bac786dff777954c11930256075e – before b2f11c6f3e1fc60742673b8675c95b78447f3dae |
| Linux | Linux | 5.1 |
References
- https://git.kernel.org/stable/c/0f27f4f445390cb7f73d4209cb2bf32834dc53da
- https://git.kernel.org/stable/c/99418ec776a39609f50934720419e0b464ca2283
- https://git.kernel.org/stable/c/ad5ee9feebc2eb8cfc76ed74a2d6e55343b0e169
- https://git.kernel.org/stable/c/ebeff038744c498a036e7a92eb8e433ae0a386d7
- https://git.kernel.org/stable/c/d942e855324a60107025c116245095632476613e
- https://git.kernel.org/stable/c/0f078f8ca93b28a34e20bd050f12cd4efeee7c0f
- https://git.kernel.org/stable/c/b2f11c6f3e1fc60742673b8675c95b78447f3dae
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html