High · published May 19, 2024
In the Linux kernel, the following vulnerability has been resolved:
nfc: nci: Fix uninit-value in nci_dev_up and nci_ntf_packet
syzbot reported the following uninit-value access issue [1][2]:
nci_rx_work() parses and processes received packet. When the payload
length is zero, each message type handler reads uninitialized payload
and KMSAN detects this issue. The receipt of a packet with a zero-size
payload is considered unexpected, and therefore, such packets should be
silently discarded.
This patch resolved this issue by checking payload size before calling
each message type handler codes.
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≥ 3.2, < 4.19.312 | 4.19.312 |
| linux/linux_kernel | ≥ 4.20, < 5.4.274 | 5.4.274 |
| linux/linux_kernel | ≥ 5.5, < 5.10.215 | 5.10.215 |
| linux/linux_kernel | ≥ 5.11, < 5.15.154 | 5.15.154 |
| linux/linux_kernel | ≥ 5.16, < 6.1.85 | 6.1.85 |
| linux/linux_kernel | ≥ 6.2, < 6.6.26 | 6.6.26 |
| linux/linux_kernel | ≥ 6.7, < 6.8.5 | 6.8.5 |
| linux/linux_kernel | all versions | — |
| debian/debian_linux | all versions | — |