CVE-2023-52974 Information

Description

In the Linux kernel the following vulnerability has been resolved:

scsi: iscsi_tcp: Fix UAF during login when accessing the shost ipaddress

If during iscsi_sw_tcp_session_create() iscsi_tcp_r2tpool_alloc() fails userspace could be accessing the host’s ipaddress attr. If we then free the session via iscsi_session_teardown() while userspace is still accessing the session we will hit a use after free bug.

Set the tcp_sw_host->session after we have completed session creation and can no longer fail.

Reference

https://git.kernel.org/stable/c/0aaabdb900c7415caa2006ef580322f7eac5f6b6 https://git.kernel.org/stable/c/496af9d3682ed4c28fb734342a09e6cc0c056ea4 https://git.kernel.org/stable/c/61e43ebfd243bcbad11be26bd921723027b77441 https://git.kernel.org/stable/c/6abd4698f4c8a78e7bbfc421205c060c199554a0 https://git.kernel.org/stable/c/9758ffe1c07b86aefd7ca8e40d9a461293427ca0 https://git.kernel.org/stable/c/d4d765f4761f9e3a2d62992f825aeee593bcb6b9 https://git.kernel.org/stable/c/f484a794e4ee2a9ce61f52a78e810ac45f3fe3b3