CVE-2025-39963
In the Linux kernel, the following vulnerability has been resolved:
io_uring: fix incorrect io_kiocb reference in io_link_skb
In io_link_skb function, there is a bug where prev_notif is incorrectly assigned using 'nd' instead of 'prev_nd'. This causes the context validation check to compare the current notification with itself instead of comparing it with the previous notification.
Fix by using the correct prev_nd parameter when obtaining prev_notif.
| Software | From | Fixed in |
|---|---|---|
| linux / linux_kernel | 6.10 | 6.12.49 |
| linux / linux_kernel | 6.13 | 6.16.9 |
| linux / linux_kernel | 6.17-rc1 | 6.17-rc1.x |
| linux / linux_kernel | 6.17-rc2 | 6.17-rc2.x |
| linux / linux_kernel | 6.17-rc3 | 6.17-rc3.x |
| linux / linux_kernel | 6.17-rc4 | 6.17-rc4.x |
| linux / linux_kernel | 6.17-rc5 | 6.17-rc5.x |
| linux / linux_kernel | 6.17-rc6 | 6.17-rc6.x |
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