CVE-2024-57804 (GCVE-0-2024-57804)

Vulnerability from cvelistv5 – Published: 2025-01-11 12:39 – Updated: 2026-08-05 11:46
VLAI
Title
scsi: mpi3mr: Fix corrupt config pages PHY state is switched in sysfs
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: mpi3mr: Fix corrupt config pages PHY state is switched in sysfs The driver, through the SAS transport, exposes a sysfs interface to enable/disable PHYs in a controller/expander setup. When multiple PHYs are disabled and enabled in rapid succession, the persistent and current config pages related to SAS IO unit/SAS Expander pages could get corrupted. Use separate memory for each config request.
Severity
7.3 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 32d457d5a2af9bf5ddbe28297eabf1fc93451665 , < 869fdc6f0606060301aef648231e186c7c542f5a (git)
Affected: 32d457d5a2af9bf5ddbe28297eabf1fc93451665 , < 711201a8b8334a397440ac0b859df0054e174bc9 (git)
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Linux Linux Affected: 6.1
Unaffected: 0 , < 6.1 (semver)
Unaffected: 6.12.8 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)
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              "value": "AV:L - The vulnerable code is reached only through local sysfs attributes under /sys/class/sas_phy/ (phy error counters, enable, link rate) and the bsg device; there is no network-facing path into mpi3mr config-page processing.\nAC:L - The attacker controls both sides of the race by concurrently reading the world-readable phy error-counter attributes across multiple phys/threads, each of which memsets and reuses the shared mrioc-\u003ecfg_page outside cfg_cmds.mutex; the commit itself notes the corruption occurs on operations \"in rapid succession\", with no attacker-uncontrollable precondition.\nPR:L - The SAS transport exports invalid_dword_count, running_disparity_error_count, loss_of_dword_sync_count and phy_reset_problem_count with S_IRUGO (0444), and reading them invokes mpi3mr_transport_get_linkerrors() -\u003e mpi3mr_cfg_get_sas_phy_pg1() -\u003e mpi3mr_process_cfg_req(), so an unprivileged local user can drive the racy shared-buffer path and corrupt config requests issued by any other context, including a privileged WRITE_PERSISTENT.\nUI:N - The attacker\u0027s own concurrent sysfs reads race each other and race the driver\u0027s internal discovery/reset config-page reads; no victim action is required to trigger the corruption.\nS:U - The corrupted state is the HBA driver\u0027s DMA buffer and the controller configuration it manages, all within the kernel\u0027s own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:L - A thread\u0027s post-mutex read-out memcpy can return a different config page\u0027s contents (device SAS addresses/WWNs, enclosure identifiers, expander topology, driver page settings), which are then surfaced to unprivileged userspace through the world-readable phy sysfs attributes; the leak is bounded to the 1024-byte shared config buffer rather than arbitrary kernel memory.\nI:H - mpi3mr_cfg_set_sas_io_unit_pg1() performs WRITE_CURRENT and WRITE_PERSISTENT with a payload staged in the unlocked shared buffer, so a racing reader causes zeroed/foreign data to be DMA\u0027d into the controller\u0027s non-volatile SAS IO Unit / SAS Expander configuration, and garbled reads poison the driver\u0027s SAS topology state (device handles, SAS addresses, port IDs) used for I/O routing \u2014 a direct and serious integrity loss.\nA:H - A corrupted persistent SAS IO Unit Page 1 leaves PHYs disabled or with invalid link rates, so storage behind the HBA fails to come back and the misconfiguration survives reboot; additionally a botched config request drives mpi3mr_check_rh_fault_ioc(MPI3MR_RESET_FROM_CFG_REQ_TIMEOUT), diag-faulting and resetting the controller and potentially marking it unrecoverable, stalling all attached I/O."
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    "datePublished": "2025-01-11T12:39:50.958Z",
    "dateReserved": "2025-01-09T09:50:31.793Z",
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}



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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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