by Kastro
Paper/Archive/CVE-2025-38075

CVE-2025-38075

Linux Linux — scsi: target: iscsi: Fix timeout on deleted connection

EPSS 0.5%CVSS 9.8
critical.is priorityof 100
37
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 39.9.399 × 208.0No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Linuxe48354ce078c079996f89d715dfa44814b4eba01 – < 571ce6b6f5cbaf7d24af03cad592fc0e2a54de35571ce6b6f5cbaf7d24af03cad592fc0e2a54de35CNA
Linuxe48354ce078c079996f89d715dfa44814b4eba01 – < 2c5081439c7ab8da08427befe427f0d732ebc9f92c5081439c7ab8da08427befe427f0d732ebc9f9CNA
Linuxe48354ce078c079996f89d715dfa44814b4eba01 – < 019ca2804f3fb49a7f8e56ea6aeaa1ff32724c27019ca2804f3fb49a7f8e56ea6aeaa1ff32724c27CNA
Linuxe48354ce078c079996f89d715dfa44814b4eba01 – < 6815846e0c3a62116a7da9740e3a7c10edc5c7e96815846e0c3a62116a7da9740e3a7c10edc5c7e9CNA
Linuxe48354ce078c079996f89d715dfa44814b4eba01 – < fe8421e853ef289e1324fcda004751c89dd9c18afe8421e853ef289e1324fcda004751c89dd9c18aCNA
Linuxe48354ce078c079996f89d715dfa44814b4eba01 – < 87389bff743c55b6b85282de91109391f43e081487389bff743c55b6b85282de91109391f43e0814CNA
Linuxe48354ce078c079996f89d715dfa44814b4eba01 – < 3e6429e3707943078240a2c0c0b3ee99ea9b0d9c3e6429e3707943078240a2c0c0b3ee99ea9b0d9cCNA
Linuxe48354ce078c079996f89d715dfa44814b4eba01 – < 7f533cc5ee4c4436cee51dc58e81dfd9c33844187f533cc5ee4c4436cee51dc58e81dfd9c3384418CNA
Linux3.1–CNA

Scores by source

Linux (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refgit.kernel.org/stable/c/571ce6b6f5cbaf7d24af03cad592fc0e2a54de35refgit.kernel.org/stable/c/2c5081439c7ab8da08427befe427f0d732ebc9f9refgit.kernel.org/stable/c/019ca2804f3fb49a7f8e56ea6aeaa1ff32724c27refgit.kernel.org/stable/c/6815846e0c3a62116a7da9740e3a7c10edc5c7e9refgit.kernel.org/stable/c/fe8421e853ef289e1324fcda004751c89dd9c18arefgit.kernel.org/stable/c/87389bff743c55b6b85282de91109391f43e0814refgit.kernel.org/stable/c/3e6429e3707943078240a2c0c0b3ee99ea9b0d9crefgit.kernel.org/stable/c/7f533cc5ee4c4436cee51dc58e81dfd9c3384418reflists.debian.org/debian-lts-announce/2025/10/msg00008.htmlreflists.debian.org/debian-lts-announce/2025/10/msg00007.html