Vulnerability · Published Dec 29, 2024 · Assigned by Linux

CVE-2024-56709io_uring: check if iowq is killed before queuing

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 0.3% (higher than 19% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.3%top 80.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: io_uring: check if iowq is killed before queuing task work can be executed after the task has gone through io_uring termination, whether it's the final task_work run or the fallback path. In this case, task work will find ->io_wq being already killed and null'ed, which is a problem if it then tries to forward the request to io_queue_iowq(). Make io_queue_iowq() fail requests in this case. Note that it also checks PF_KTHREAD, because the user can first close a DEFER_TASKRUN ring and shortly after kill the task, in which case ->iowq check would race.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:9kernel5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-64k5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-64k-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-64k-debug5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-64k-debug-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-64k-debug-devel5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-64k-debug-devel-matched5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-64k-debug-modules5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-64k-debug-modules-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-64k-debug-modules-extra5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-64k-devel5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-64k-devel-matched5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-64k-modules5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-64k-modules-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-64k-modules-extra5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-abi-stablelists5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-cross-headers5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-debug5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-debug-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-debug-devel5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-debug-devel-matched5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-debug-modules5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-debug-modules-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-debug-modules-extra5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-debug-uki-virt5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-devel5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-devel-matched5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-doc5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-headers5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-modules5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-modules-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-modules-extra5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-64k5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-64k-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-64k-debug5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-64k-debug-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-64k-debug-devel5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-64k-debug-modules5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-64k-debug-modules-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-64k-debug-modules-extra5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-64k-devel5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-64k-modules5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-64k-modules-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-64k-modules-extra5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-debug5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-debug-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-debug-devel5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-debug-modules5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-debug-modules-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-debug-modules-extra5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-devel5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-modules5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-modules-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-rt-modules-extra5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-tools5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-tools-libs5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-tools-libs-devel5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-uki-virt5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-uki-virt-addons5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-zfcpdump5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-zfcpdump-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-zfcpdump-devel5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-zfcpdump-devel-matched5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-zfcpdump-modules5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-zfcpdump-modules-core5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9kernel-zfcpdump-modules-extra5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9libperf5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9perf5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9python3-perf5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9rtla5.14.0-611.5.1.el9_7ALSA-2025:20518
AlmaLinux:9rv5.14.0-611.5.1.el9_7ALSA-2025:20518
Debian:12linux6.1.123-1DEBIAN-CVE-2024-56709
Debian:13linuxno fix listedDEBIAN-CVE-2024-56709
Debian:14linuxno fix listedDEBIAN-CVE-2024-56709
Rocky Linux:9kernel0:5.14.0-611.5.1.el9_7RLSA-2025:20518
Ubuntu:22.04:LTSlinuxno fix listedUBUNTU-CVE-2024-56709
Ubuntu:24.04:LTSlinux6.8.0-60.63USN-7513-1
Ubuntu:24.04:LTSlinux6.8.0-60.63UBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-awsno fix listedUBUNTU-CVE-2024-56709
Ubuntu:24.04:LTSlinux-aws6.8.0-1029.31UBUNTU-CVE-2024-56709
Ubuntu:24.04:LTSlinux-aws6.8.0-1029.31USN-7513-1
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1029.31~22.04.1UBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-aws-6.86.8.0-1029.31~22.04.1USN-7513-1
Ubuntu:22.04:LTSlinux-azureno fix listedUBUNTU-CVE-2024-56709
Ubuntu:24.04:LTSlinux-azure6.8.0-1029.34USN-7513-3
Ubuntu:24.04:LTSlinux-azure6.8.0-1029.34UBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2024-56709
Ubuntu:24.04:LTSlinux-azure-6.116.11.0-1012.12~24.04.1UBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1029.34~22.04.1UBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-azure-6.86.8.0-1029.34~22.04.1USN-7513-3
Ubuntu:22.04:LTSlinux-azure-fdeno fix listedUBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2024-56709
Ubuntu:24.04:LTSlinux-azure-nvidia6.8.0-1016.17USN-7522-1
Ubuntu:24.04:LTSlinux-azure-nvidia6.8.0-1016.17UBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-gcpno fix listedUBUNTU-CVE-2024-56709
Ubuntu:24.04:LTSlinux-gcp6.8.0-1030.32USN-7515-2
Ubuntu:24.04:LTSlinux-gcp6.8.0-1030.32UBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2024-56709
Ubuntu:24.04:LTSlinux-gcp-6.116.11.0-1011.11~24.04.1UBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1030.32~22.04.1USN-7515-2
Ubuntu:22.04:LTSlinux-gcp-6.86.8.0-1030.32~22.04.1UBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-gkeno fix listedUBUNTU-CVE-2024-56709
Ubuntu:24.04:LTSlinux-gke6.8.0-1025.29UBUNTU-CVE-2024-56709
Ubuntu:24.04:LTSlinux-gke6.8.0-1025.29USN-7515-1
Ubuntu:22.04:LTSlinux-gkeopno fix listedUBUNTU-CVE-2024-56709
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1012.14UBUNTU-CVE-2024-56709
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1012.14USN-7515-2
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2024-56709
Ubuntu:24.04:LTSlinux-hwe-6.116.11.0-21.21~24.04.1UBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-60.63~22.04.1USN-7513-4
Ubuntu:22.04:LTSlinux-hwe-6.86.8.0-60.63~22.04.1UBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-ibmno fix listedUBUNTU-CVE-2024-56709
Ubuntu:24.04:LTSlinux-ibm6.8.0-1026.26USN-7513-1
Ubuntu:24.04:LTSlinux-ibm6.8.0-1026.26UBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-ibm-6.86.8.0-1026.26~22.04.1UBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-intel-iotgno fix listedUBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-kvmno fix listedUBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-lowlatencyno fix listedUBUNTU-CVE-2024-56709
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-60.63.1USN-7513-1
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-60.63.1UBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-60.63.1~22.04.1USN-7513-1
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.86.8.0-60.63.1~22.04.1UBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2024-56709
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1028.31UBUNTU-CVE-2024-56709
Ubuntu:24.04:LTSlinux-nvidia6.8.0-1028.31USN-7514-1
Ubuntu:24.04:LTSlinux-nvidia-6.116.11.0-1007.7UBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1028.31~22.04.1USN-7514-1
Ubuntu:22.04:LTSlinux-nvidia-6.86.8.0-1028.31~22.04.1UBUNTU-CVE-2024-56709
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1028.31.1UBUNTU-CVE-2024-56709
Ubuntu:24.04:LTSlinux-nvidia-lowlatency6.8.0-1028.31.1USN-7514-1
Ubuntu:22.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2024-56709
Ubuntu:24.04:LTSlinux-nvidia-tegra6.8.0-1008.8UBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-nvidia-tegra-igxno fix listedUBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2024-56709
Ubuntu:24.04:LTSlinux-oem-6.116.11.0-1017.17UBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2024-56709
Ubuntu:24.04:LTSlinux-oem-6.86.8.0-1028.28USN-7513-3
Ubuntu:24.04:LTSlinux-oem-6.86.8.0-1028.28UBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-oracleno fix listedUBUNTU-CVE-2024-56709
Ubuntu:24.04:LTSlinux-oracle6.8.0-1026.27USN-7513-1
Ubuntu:24.04:LTSlinux-oracle6.8.0-1026.27UBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1026.27~22.04.1UBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-oracle-6.86.8.0-1026.27~22.04.1USN-7513-5
Ubuntu:22.04:LTSlinux-raspino fix listedUBUNTU-CVE-2024-56709
Ubuntu:24.04:LTSlinux-raspi6.8.0-1028.32UBUNTU-CVE-2024-56709
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-56709
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2024-56709
Ubuntu:24.04:LTSlinux-riscv6.8.0-60.63.1UBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-riscv-6.86.8.0-62.65~22.04.1UBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2024-56709
Ubuntu:24.04:LTSlinux-xilinx6.8.0-1017.18UBUNTU-CVE-2024-56709
Ubuntu:22.04:LTSlinux-xilinx-zynqmpno fix listedUBUNTU-CVE-2024-56709

Affected products (as reported)

VendorProductVersions
Linux Linux 773af69121ecc6c53d192661af8d53bb3db028ae – before 534d59ab38010aada88390db65985e65d0de7d9e773af69121ecc6c53d192661af8d53bb3db028ae – before 2ca94c8de36091067b9ce7527ae8db3812d38781773af69121ecc6c53d192661af8d53bb3db028ae – before 4f95a2186b7f2af09331e1e8069bcaf34fe019cf773af69121ecc6c53d192661af8d53bb3db028ae – before dbd2ca9367eb19bc5e269b8c58b0b1514ada9156
Linux Linux 5.14

References