CVE-2025-38399 scsi: target: Fix NULL pointer dereference in core_scsi3_decode_spec_i_port()
A NULL pointer dereference in the Linux kernel SCSI target module allows attackers to cause a system crash via crafted SCSI commands.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-38399?
CVE-2025-38399 is a high-severity vulnerability in Debian Debian Linux, published on 25 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
scsi: target: Fix NULL pointer dereference in core_scsi3_decode_spec_i_port()
The function core_scsi3_decode_spec_i_port(), in its error code path, unconditionally calls core_scsi3_lunacl_undepend_item() passing the dest_se_deve pointer, which may be NULL.
This can lead to a NULL pointer dereference if dest_se_deve remains unset.
SPC-3 PR SPEC_I_PT: Unable to locate dest_tpg Unable to handle kernel paging request at virtual address dfff800000000012 Call trace: core_scsi3_lunacl_undepend_item+0x2c/0xf0 [target_core_mod] (P) core_scsi3_decode_spec_i_port+0x120c/0x1c30 [target_core_mod] core_scsi3_emulate_pro_register+0x6b8/0xcd8 [target_core_mod] target_scsi3_emulate_pr_out+0x56c/0x840 [target_core_mod]
Fix this by adding a NULL check before calling core_scsi3_lunacl_undepend_item()
Weakness: CWE-476
Which versions are affected by CVE-2025-38399?
It affects 2 products.
Products include Debian Debian Linux, Linux kernel.
How do I fix CVE-2025-38399?
Apply the vendor's patch.
Is CVE-2025-38399 being exploited?
There is no known exploitation of CVE-2025-38399 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as AZL-65720, AZL-73016, BELL-CVE-2025-38399, DEBIAN-CVE-2025-38399, GHSA-73j2-c6c6-cr45, ROOT-OS-DEBIAN-11-CVE-2025-38399 and 4 more.