CVE-2025-38700

MEDIUM EPSS 5.6%
Published Sep 4, 20259mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Sep 4, 2025 9mo ago
Last Modified Jun 17, 2026 1w ago

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

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
5.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 9

VendorProductVersionRange
linuxlinux_kernel*≥2.6.27  –  <5.4.297
linuxlinux_kernel*≥5.5  –  <5.10.241
linuxlinux_kernel*≥5.11  –  <5.15.190
linuxlinux_kernel*≥5.16  –  <6.1.149
linuxlinux_kernel*≥6.2  –  <6.6.103
linuxlinux_kernel*≥6.7  –  <6.12.43
linuxlinux_kernel*≥6.13  –  <6.15.11
linuxlinux_kernel*≥6.16  –  <6.16.2
debiandebian_linux11.0any

References 12

  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-032379.html
  • git.kernel.org https://git.kernel.org/stable/c/2b242ea14386a510010eabfbfc3ce81a101f3802
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/35782c32528d82aa21f84cb5ceb2abd3526a8159
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3ea3a256ed81f95ab0f3281a0e234b01a9cae605
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/66a373f50b4249d57f5a88c7be9676f9d5884865
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9ea6d961566c7d762ed0204b06db05756fdda3b6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a145c269dc5380c063a20a0db7e6df2995962e9d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a33d42b7fc24fe03f239fbb0880dd5b4b4b97c19
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f53af99f441ee79599d8df6113a7144d74cf9153
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fd5aad080edb501ab5c84b7623d612d0e3033403
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
    Mailing ListThird Party Advisory
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
    Mailing ListThird Party Advisory

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/2b242ea14386a510010eabfbfc3ce81a101f3802
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/35782c32528d82aa21f84cb5ceb2abd3526a8159
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3ea3a256ed81f95ab0f3281a0e234b01a9cae605
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/66a373f50b4249d57f5a88c7be9676f9d5884865
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/9ea6d961566c7d762ed0204b06db05756fdda3b6
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a145c269dc5380c063a20a0db7e6df2995962e9d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/a33d42b7fc24fe03f239fbb0880dd5b4b4b97c19
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f53af99f441ee79599d8df6113a7144d74cf9153
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fd5aad080edb501ab5c84b7623d612d0e3033403
    Patch