IT

Tracker / CVE-2023-53106

CVE-2023-53106

High 7.8

In the Linux kernel, the following vulnerability has been resolved: nfc: st-nci: Fix use after free bug in ndlc_remove due to race condition This bug influences both st_nci_i2c_remove and st_nci_spi_remove. Take st_nci_i2c_remove as an example. In st_nci_i2c_probe, it called ndlc_probe and bound &ndlc->sm_work with llt_ndlc_sm_work. When it calls ndlc_recv or timeout handler, it will finally call schedule_work to start the work. When we call st_nci_i2c_remove to remove the driver, there may be a sequence as follows: Fix it by finishing the work before cleanup in ndlc_remove CPU0 CPU1 |llt_ndlc_sm_work st_nci_i2c_remove | ndlc_remove | st_nci_remove | nci_free_device| kfree(ndev) | //free ndlc->ndev | |llt_ndlc_rcv_queue |nci_recv_frame |//use ndlc->ndev

Affected products and versions

linux linux_kernel
linux linux_kernel · 3.17 → 4.14.311
linux linux_kernel · 4.15 → 4.19.279
linux linux_kernel · 4.20 → 5.4.238
linux linux_kernel · 5.11 → 5.15.104
linux linux_kernel · 5.16 → 6.1.21
linux linux_kernel · 5.5 → 5.10.176
linux linux_kernel · 6.2 → 6.2.8

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.

References