🛡️ AZL-66905 — kernel

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

CVE-2025-38700 affecting package kernel for versions less than 6.6.104.2-1

In the Linux kernel, the following vulnerability has been resolved:

scsi: libiscsi: Initialize iscsi_conn->dd_data only if memory is allocated

In case of an ib_fast_reg_mr allocation failure during iSER setup, the

machine hits a panic because iscsi_conn->dd_data is initialized

unconditionally, even when no memory is allocated (dd_size == 0). This

leads invalid pointer dereference during connection teardown.

Fix by setting iscsi_conn->dd_data only if memory is actually allocated.

Panic trace:

------------

iser: iser_create_fastreg_desc: Failed to allocate ib_fast_reg_mr err=-12

iser: iser_alloc_rx_descriptors: failed allocating rx descriptors / data buffers

BUG: unable to handle page fault for address: fffffffffffffff8

RIP: 0010:swake_up_locked.part.5+0xa/0x40

Call Trace:

complete+0x31/0x40

iscsi_iser_conn_stop+0x88/0xb0 [ib_iser]

iscsi_stop_conn+0x66/0xc0 [scsi_transport_iscsi]

iscsi_if_stop_conn+0x14a/0x150 [scsi_transport_iscsi]

iscsi_if_rx+0x1135/0x1834 [scsi_transport_iscsi]

? netlink_lookup+0x12f/0x1b0

? netlink_deliver_tap+0x2c/0x200

netlink_unicast+0x1ab/0x280

netlink_sendmsg+0x257/0x4f0

? _copy_from_user+0x29/0x60

sock_sendmsg+0x5f/0x70

Affected software

AZL-66905 is recorded against 1 package.

  • kernel (fixed in 6.6.104.2-1)

Timeline and source

Published on 4 September 2025 and last revised on 21 April 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Web)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2025-09-04
Updated 2026-08-12
Modified 2026-04-21
Fix URL N/A

Affected Packages

Software From version Fixed in
kernel — 6.6.104.2-1

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