CVE-2024-26831

In the Linux kernel, the following vulnerability has been resolved:
net/handshake: Fix handshake_req_destroy_test1 Recently,
handshake_req_destroy_test1 started failing: Expected
handshake_req_destroy_test == req, but handshake_req_destroy_test ==
0000000000000000 req == 0000000060f99b40 not ok 11 req_destroy works This
is because “sock_release(sock)” was replaced with “fput(filp)” to address a
memory leak. Note that sock_release() is synchronous but fput() usually
delays the final close and clean-up. The delay is not consequential in the
other cases that were changed but handshake_req_destroy_test1 is testing
that handshake_req_cancel() followed by closing the file actually does call
the ->hp_destroy method. Thus the PTR_EQ test at the end has to be sure
that the final close is complete before it checks the pointer. We cannot
use a completion here because if ->hp_destroy is never called (ie, there is
an API bug) then the test will hang. Reported by: Guenter Roeck
<[email protected]>