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CVE-2025-39963

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CVE-2025-39963

Published: Oct 9, 2025

Modified: May 11, 2026

PUBLISHED

Description

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.

VendorProductVersions

Linux

Linux

affected
6fe4220912d19152a26ce19713ab232f4263018d - < a89c34babc2e5834aa0905278f26f4dbe4b26b76
affected
6fe4220912d19152a26ce19713ab232f4263018d - < 50a98ce1ea694f1ff8e87bc2f8f84096d1736f6a
affected
6fe4220912d19152a26ce19713ab232f4263018d - < 2c139a47eff8de24e3350dadb4c9d5e3426db826

Linux

Linux

affected
6.10
unaffected
0 - < 6.10
unaffected
6.12.49 - <= 6.12.*
unaffected
6.16.9 - <= 6.16.*
unaffected
6.17 - <= *

References

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