Tracker / CVE-2022-49053
CVE-2022-49053
High 7.8
In the Linux kernel, the following vulnerability has been resolved: scsi: target: tcmu: Fix possible page UAF tcmu_try_get_data_page() looks up pages under cmdr_lock, but it does not take refcount properly and just returns page pointer. When tcmu_try_get_data_page() returns, the returned page may have been freed by tcmu_blocks_release(). We need to get_page() under cmdr_lock to avoid concurrent tcmu_blocks_release().
Affected products and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · … → 4.14.276 |
| linux | linux_kernel · 4.15 → 4.19.239 |
| linux | linux_kernel · 4.20 → 5.4.190 |
| linux | linux_kernel · 5.11 → 5.15.35 |
| linux | linux_kernel · 5.16 → 5.17.4 |
| linux | linux_kernel · 5.5 → 5.10.112 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.