Bug 2355469 (CVE-2023-52974)

Summary: CVE-2023-52974 kernel: scsi: iscsi_tcp: Fix UAF during login when accessing the shost ipaddress
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Doc Text:
A vulnerability was found in the Linux kernel's iscsi tcp drivers. Improper resource allocation management can lead to a use-after-free scenario, triggered when the userspace attempts to access the session host's `ipaddress` attribute while the kernel is performing a session teardown via `iscsi_session_teardown()`.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description OSIDB Bzimport 2025-03-27 17:03:01 UTC 
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.
Comment 1 Robb Gatica 2025-03-27 23:29:43 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025032704-CVE-2023-52974-0aa2@gregkh/T