CVE-2023-53106
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.20%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.20% probability · 10th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/2156490c4b7cacda9a18ec99929940b8376dc0e3Patch
- https://git.kernel.org/stable/c/3405eb641dafcc8b28d174784b203c1622c121bfPatch
- https://git.kernel.org/stable/c/43aa468df246175207a7d5d7d6d31b231f15b49cPatch
- https://git.kernel.org/stable/c/5000fe6c27827a61d8250a7e4a1d26c3298ef4f6Patch
- https://git.kernel.org/stable/c/5e331022b448fbc5e76f24349cd0246844dcad25Patch
- https://git.kernel.org/stable/c/84dd9cc34014e3a3dcce0eb6d54b8a067e97676bPatch
- https://git.kernel.org/stable/c/b0c202a8dc63008205a5d546559736507a9aae66Patch
- https://git.kernel.org/stable/c/f589e5b56c562d99ea74e05b1c3f0eab78aa17a3Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.