CVE-2025-38700
published 2025-09-04CVE-2025-38700: 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…
medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
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
39 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | linux | < linux 6.1.153-1 (bookworm) | linux 6.1.153-1 (bookworm) |
| debian | linux-6.1 | < linux 6.1.153-1 (bookworm) | linux 6.1.153-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 5d91e209fb21fb9cc765729d4c6a85a9fb6c9187 < f53af99f441ee79599d8df6113a7144d74cf9153 | f53af99f441ee79599d8df6113a7144d74cf9153 |
| linux | linux | >= 5d91e209fb21fb9cc765729d4c6a85a9fb6c9187 < 9ea6d961566c7d762ed0204b06db05756fdda3b6 | 9ea6d961566c7d762ed0204b06db05756fdda3b6 |
| linux | linux | >= 5d91e209fb21fb9cc765729d4c6a85a9fb6c9187 < fd5aad080edb501ab5c84b7623d612d0e3033403 | fd5aad080edb501ab5c84b7623d612d0e3033403 |
| linux | linux | >= 5d91e209fb21fb9cc765729d4c6a85a9fb6c9187 < a145c269dc5380c063a20a0db7e6df2995962e9d | a145c269dc5380c063a20a0db7e6df2995962e9d |
| linux | linux | >= 5d91e209fb21fb9cc765729d4c6a85a9fb6c9187 < 66a373f50b4249d57f5a88c7be9676f9d5884865 | 66a373f50b4249d57f5a88c7be9676f9d5884865 |
| linux | linux | >= 5d91e209fb21fb9cc765729d4c6a85a9fb6c9187 < 35782c32528d82aa21f84cb5ceb2abd3526a8159 | 35782c32528d82aa21f84cb5ceb2abd3526a8159 |
| linux | linux | >= 5d91e209fb21fb9cc765729d4c6a85a9fb6c9187 < a33d42b7fc24fe03f239fbb0880dd5b4b4b97c19 | a33d42b7fc24fe03f239fbb0880dd5b4b4b97c19 |
| linux | linux | >= 5d91e209fb21fb9cc765729d4c6a85a9fb6c9187 < 2b242ea14386a510010eabfbfc3ce81a101f3802 | 2b242ea14386a510010eabfbfc3ce81a101f3802 |
| linux | linux | >= 5d91e209fb21fb9cc765729d4c6a85a9fb6c9187 < 3ea3a256ed81f95ab0f3281a0e234b01a9cae605 | 3ea3a256ed81f95ab0f3281a0e234b01a9cae605 |
| linux | linux_kernel | >= 0 < 5.10.244-1 | 5.10.244-1 |
| linux | linux_kernel | >= 0 < 6.1.153-1 | 6.1.153-1 |
| linux | linux_kernel | >= 0 < 6.12.43-1 | 6.12.43-1 |
| linux | linux_kernel | >= 0 < 6.16.3-1 | 6.16.3-1 |
| linux | linux_kernel | >= 0 < 5.15.0-163.173 | 5.15.0-163.173 |
| linux | linux_kernel | >= 0 < 6.8.0-100.100 | 6.8.0-100.100 |
| linux | linux_kernel | >= 2.6.27 < 5.4.297 | 5.4.297 |
| linux | linux_kernel | >= 5.11 < 5.15.190 | 5.15.190 |
| linux | linux_kernel | >= 5.16 < 6.1.149 | 6.1.149 |
| linux | linux_kernel | >= 5.5 < 5.10.241 | 5.10.241 |
| linux | linux_kernel | >= 6.13 < 6.15.11 | 6.15.11 |
| linux | linux_kernel | >= 6.16 < 6.16.2 | 6.16.2 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM