by Kastro
Paper/Archive/CVE-2023-54184

CVE-2023-54184

Linux Linux — scsi: target: iscsit: Free cmds before session free

EPSS 0.6%CVSS 9.8
critical.is priorityof 100
39
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 47.3.473 × 209.5No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsit: Free cmds before session free Commands from recovery entries are freed after session has been closed. That leads to use-after-free at command free or NPE with such call trace: Time2Retain timer expired for SID: 1, cleaning up iSCSI session. BUG: kernel NULL pointer dereference, address: 0000000000000140 RIP: 0010:sbitmap_queue_clear+0x3a/0xa0 Call Trace: target_release_cmd_kref+0xd1/0x1f0 [target_core_mod] transport_generic_free_cmd+0xd1/0x180 [target_core_mod] iscsit_free_cmd+0x53/0xd0 [iscsi_target_mod] iscsit_free_connection_recovery_entries+0x29d/0x320 [iscsi_target_mod] iscsit_close_session+0x13a/0x140 [iscsi_target_mod] iscsit_check_post_dataout+0x440/0x440 [iscsi_target_mod] call_timer_fn+0x24/0x140 Move cleanup of recovery enrties to before session freeing.

Affected

ProductAffectedFixed inSource
Linux988e3a85463d9b6dabc681df3f8f131b23c19953 – < 89f5055f9b0b57c7e7f02e32df95ef401f809b7189f5055f9b0b57c7e7f02e32df95ef401f809b71CNA
Linux988e3a85463d9b6dabc681df3f8f131b23c19953 – < 4621e24c9257c6379343bf0c11b473817cf7edcd4621e24c9257c6379343bf0c11b473817cf7edcdCNA
Linux988e3a85463d9b6dabc681df3f8f131b23c19953 – < 1911cca5916b6e106de7afa3ec0a38447158216c1911cca5916b6e106de7afa3ec0a38447158216cCNA
Linux988e3a85463d9b6dabc681df3f8f131b23c19953 – < a7a4def6c7046e090bb10c6d550fdeb487db98baa7a4def6c7046e090bb10c6d550fdeb487db98baCNA
Linux988e3a85463d9b6dabc681df3f8f131b23c19953 – < 4ce221d295f53e6c6b835ab33181e735482c9aac4ce221d295f53e6c6b835ab33181e735482c9aacCNA
Linux988e3a85463d9b6dabc681df3f8f131b23c19953 – < d8990b5a4d065f38f35d69bcd627ec5a7f8330cad8990b5a4d065f38f35d69bcd627ec5a7f8330caCNA
Linux3.12–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

References

refgit.kernel.org/stable/c/89f5055f9b0b57c7e7f02e32df95ef401f809b71refgit.kernel.org/stable/c/4621e24c9257c6379343bf0c11b473817cf7edcdrefgit.kernel.org/stable/c/1911cca5916b6e106de7afa3ec0a38447158216crefgit.kernel.org/stable/c/a7a4def6c7046e090bb10c6d550fdeb487db98barefgit.kernel.org/stable/c/4ce221d295f53e6c6b835ab33181e735482c9aacrefgit.kernel.org/stable/c/d8990b5a4d065f38f35d69bcd627ec5a7f8330ca