CVE-2022-50764
Description
In the Linux kernel, the following vulnerability has been resolved: ipv6/sit: use DEV_STATS_INC() to avoid data-races syzbot/KCSAN reported that multiple cpus are updating dev->stats.tx_error concurrently. This is because sit tunnels are NETIF_F_LLTX, meaning their ndo_start_xmit() is not protected by a spinlock. While original KCSAN report was about tx path, rx path has the same issue.
How to fix
- Linux Linux222cc04356984f3f98acfa756a69d4bed7c501ac, 4eed93bb3e57b8cc78d17166a14e40a73276015a, 207501a986831174df09a36a8cb62a28f92f0dc8, cb34b7cf17ecf33499c9298943f85af247abc1e9 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 8df40d1033d64597dcf1efd4f7547e817f7a953b ≤ v < 222cc04356984f3f98acfa756a69d4bed7c501ac, 8df40d1033d64597dcf1efd4f7547e817f7a953b ≤ v < 4eed93bb3e57b8cc78d17166a14e40a73276015a, 8df40d1033d64597dcf1efd4f7547e817f7a953b ≤ v < 207501a986831174df09a36a8cb62a28f92f0dc8, 8df40d1033d64597dcf1efd4f7547e817f7a953b ≤ v < cb34b7cf17ecf33499c9298943f85af247abc1e9, 2.6.37 | 222cc04356984f3f98acfa756a69d4bed7c501ac, 4eed93bb3e57b8cc78d17166a14e40a73276015a, 207501a986831174df09a36a8cb62a28f92f0dc8, cb34b7cf17ecf33499c9298943f85af247abc1e9 |
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