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CVE PROGRAM SOURCE RECORDUnscored

CVE-2025-38700

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

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Status
Published
Published
Updated
Assigning organization
Linux

Description

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 products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 5d91e209fb21fb9cc765729d4c6a85a9fb6c9187 to < f53af99f441ee79599d8df6113a7144d74cf9153affected
  • 5d91e209fb21fb9cc765729d4c6a85a9fb6c9187 to < 9ea6d961566c7d762ed0204b06db05756fdda3b6affected
  • 5d91e209fb21fb9cc765729d4c6a85a9fb6c9187 to < fd5aad080edb501ab5c84b7623d612d0e3033403affected
  • 5d91e209fb21fb9cc765729d4c6a85a9fb6c9187 to < a145c269dc5380c063a20a0db7e6df2995962e9daffected
  • 5d91e209fb21fb9cc765729d4c6a85a9fb6c9187 to < 66a373f50b4249d57f5a88c7be9676f9d5884865affected
  • 5d91e209fb21fb9cc765729d4c6a85a9fb6c9187 to < 35782c32528d82aa21f84cb5ceb2abd3526a8159affected
  • 5d91e209fb21fb9cc765729d4c6a85a9fb6c9187 to < a33d42b7fc24fe03f239fbb0880dd5b4b4b97c19affected
  • 5d91e209fb21fb9cc765729d4c6a85a9fb6c9187 to < 2b242ea14386a510010eabfbfc3ce81a101f3802affected
  • 5d91e209fb21fb9cc765729d4c6a85a9fb6c9187 to < 3ea3a256ed81f95ab0f3281a0e234b01a9cae605affected

Linux Linux

Default version status: affected

  • 2.6.27affected
  • 0 to < 2.6.27unaffected
  • 5.4.297 to ≤ 5.4.*unaffected
  • 5.10.241 to ≤ 5.10.*unaffected
  • 5.15.190 to ≤ 5.15.*unaffected
  • 6.1.149 to ≤ 6.1.*unaffected
  • 6.6.103 to ≤ 6.6.*unaffected
  • 6.12.43 to ≤ 6.12.*unaffected
  • 6.15.11 to ≤ 6.15.*unaffected
  • 6.16.2 to ≤ 6.16.*unaffected
  • 6.17 to ≤ *unaffected

References