liveupdate: fix TOCTOU race in luo_session_retrieve()
Summary
| CVE | CVE-2026-74370 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-15 06:22:38 UTC |
| Updated | 2026-08-17 06:19:31 UTC |
| 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. |
Risk And Classification
EPSS: 0.001550000 probability, percentile 0.051870000 (date 2026-08-17)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected 0153094d03df5a2e834a19c59b255649a258ae46 d944170607b872a1f93713c555ad3f0efde3a9b8 git | Not specified |
| CNA | Linux | Linux | affected 0153094d03df5a2e834a19c59b255649a258ae46 d3ae9e7fddb4036f50003d7fa1ef52801fdb961b git | Not specified |
| CNA | Linux | Linux | affected 6.19 | Not specified |
| CNA | Linux | Linux | unaffected 6.19 semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1.5 7.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/d944170607b872a1f93713c555ad3f0efde3a9b8 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/d3ae9e7fddb4036f50003d7fa1ef52801fdb961b | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.