Vulnerability · Published Aug 15, 2026 · Assigned by Linux
CVE-2026-74370liveupdate: fix TOCTOU race in luo_session_retrieve()
Unrated
In plain English
A 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 10% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS )–Not rated
Exploit odds (30 days)0.2%top 90.4% 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: liveupdate: fix TOCTOU race in luo_session_retrieve() Extend the scope of the rwsem_read lock in luo_session_retrieve() to overlap with the acquisition of the session mutex. This prevents a concurrent thread from releasing and freeing the session between the lookup and the mutex lock.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:14 | linux | 7.1.5-1 | DEBIAN-CVE-2026-74370 |
| Ubuntu:26.04:LTS | linux | 7.0.0-38.38 | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-allwinner-5.19 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:26.04:LTS | linux-aws | 7.0.0-1014.14 | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-aws-5.19 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-aws-6.14 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-aws-6.17 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-aws-6.2 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-aws-6.5 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-aws-7.0 | 7.0.0-1014.14~24.04.1 | UBUNTU-CVE-2026-74370 |
| Ubuntu:26.04:LTS | linux-azure | 7.0.0-1017.17 | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-azure-5.19 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-azure-6.11 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-azure-6.14 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-azure-6.17 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-azure-6.2 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-azure-6.5 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-azure-7.0 | 7.0.0-1017.17~24.04.1 | UBUNTU-CVE-2026-74370 |
| Ubuntu:26.04:LTS | linux-azure-fde | 7.0.0-1016.16 | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-azure-fde-5.19 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-azure-fde-6.14 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-azure-fde-6.17 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.2 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-azure-fde-7.0 | 7.0.0-1016.16~24.04.1 | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-azure-nvidia-6.14 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:26.04:LTS | linux-gcp | 7.0.0-1014.14 | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-gcp-5.19 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-gcp-6.11 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-gcp-6.14 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-gcp-6.2 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-gcp-6.5 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-gcp-7.0 | 7.0.0-1014.14~24.04.1 | UBUNTU-CVE-2026-74370 |
| Ubuntu:26.04:LTS | linux-gke | 7.0.0-1008.9 | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-hwe-6.11 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-hwe-6.14 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-hwe-6.2 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-hwe-6.5 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-hwe-7.0 | 7.0.0-38.38~24.04.4 | UBUNTU-CVE-2026-74370 |
| Ubuntu:26.04:LTS | linux-ibm | 7.0.0-1015.15 | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-5.19 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-lowlatency-hwe-6.11 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.2 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.5 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:26.04:LTS | linux-nvidia | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-nvidia-6.11 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-nvidia-6.2 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-nvidia-6.5 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-nvidia-7.0 | 7.0.0-1024.25~24.04.1 | UBUNTU-CVE-2026-74370 |
| Ubuntu:26.04:LTS | linux-nvidia-bos | 7.0.0-2022.23 | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-oem-6.1 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-oem-6.11 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-oem-6.14 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-oem-6.5 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-oem-6.8 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:26.04:LTS | linux-oem-7.0 | 7.0.0-1015.15 | UBUNTU-CVE-2026-74370 |
| Ubuntu:26.04:LTS | linux-oracle | 7.0.0-1013.13 | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-oracle-6.14 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-oracle-6.5 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-oracle-7.0 | 7.0.0-1013.13~24.04.1 | UBUNTU-CVE-2026-74370 |
| Ubuntu:26.04:LTS | linux-raspi | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:26.04:LTS | linux-realtime | 7.0.0-38.38.1 | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:26.04:LTS | linux-riscv | 7.0.0-38.38.1 | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-riscv-5.19 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-riscv-6.14 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-riscv-6.17 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-riscv-6.5 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:24.04:LTS | linux-riscv-7.0 | 7.0.0-38.38.1~24.04.1 | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-starfive-5.19 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-starfive-6.2 | no fix listed | UBUNTU-CVE-2026-74370 |
| Ubuntu:22.04:LTS | linux-starfive-6.5 | no fix listed | UBUNTU-CVE-2026-74370 |