CVE-2023-53586
Estado: ModificadaMedia (4.7)—
In the Linux kernel, the following vulnerability has been resolved:
scsi: target: Fix multiple LUN_RESET handling
This fixes a bug where an initiator thinks a LUN_RESET has cleaned up running commands when it hasn't. The bug was added in commit 51ec502a3266 ("target: Delete tmr from list before processing").
The problem occurs when:
1. We have N I/O cmds running in the target layer spread over 2 sessions.
2. The initiator sends a LUN_RESET for each session.
5. sessions2's LUN_RESET will then complete with a successful response.
Fix the bug by reverting the patch, and serialize the execution of LUN_RESETs and Preempt and Aborts.
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Also prevent us from waiting on LUN_RESETs in core_tmr_drain_tmr_list, because it turns out the original patch fixed a bug that was not mentioned. For LUN_RESET1 core_tmr_drain_tmr_list can see a second LUN_RESET and wait on it. Then the second reset will run core_tmr_drain_tmr_list and see the first reset and wait on it resulting in a deadlock.
Detalles técnicos trazas, registros y código del informe original
3. session1's LUN_RESET loops over all the running commands from both
sessions and moves them to its local drain_task_list.
4. session2's LUN_RESET does not see the LUN_RESET from session1 because
the commit above has it remove itself. session2 also does not see any
commands since the other reset moved them off the state lists.
6. sessions2's inititor believes the running commands on its session are
now cleaned up due to the successful response and cleans up the running
commands from its side. It then restarts them.
7. The commands do eventually complete on the backend and the target
starts to return aborted task statuses for them. The initiator will
either throw a invalid ITT error or might accidentally lookup a new
task if the ITT has been reallocated already.CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 4.7
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.45%
- Percentil entre todas las CVEs puntuadas: 37
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- CWE-415
Referencias
- https://git.kernel.org/stable/c/2c43de56f9220dca3e28c774d1c5e2cab574223a
- https://git.kernel.org/stable/c/673db054d7a2b5a470d7a25baf65956d005ad729
- https://git.kernel.org/stable/c/9158c86fd3237acaea8f0181c7836d90fd6eea10
- https://git.kernel.org/stable/c/e1f59cd18a10969d08a082264b557876ca38766e
- https://git.kernel.org/stable/c/eacfe32c3650bfd0e54224d160c431013d7f6998
- https://git.kernel.org/stable/c/ed18526289b5603bf2253dee50f1d7ec245cf397
JSON original (NVD)
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