fkie_cve-2025-68224
Vulnerability from fkie_nvd
Published
2025-12-16 14:15
Modified
2025-12-18 15:08
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: core: Fix a regression triggered by scsi_host_busy() Commit 995412e23bb2 ("blk-mq: Replace tags->lock with SRCU for tag iterators") introduced the following regression: Call trace: __srcu_read_lock+0x30/0x80 (P) blk_mq_tagset_busy_iter+0x44/0x300 scsi_host_busy+0x38/0x70 ufshcd_print_host_state+0x34/0x1bc ufshcd_link_startup.constprop.0+0xe4/0x2e0 ufshcd_init+0x944/0xf80 ufshcd_pltfrm_init+0x504/0x820 ufs_rockchip_probe+0x2c/0x88 platform_probe+0x5c/0xa4 really_probe+0xc0/0x38c __driver_probe_device+0x7c/0x150 driver_probe_device+0x40/0x120 __driver_attach+0xc8/0x1e0 bus_for_each_dev+0x7c/0xdc driver_attach+0x24/0x30 bus_add_driver+0x110/0x230 driver_register+0x68/0x130 __platform_driver_register+0x20/0x2c ufs_rockchip_pltform_init+0x1c/0x28 do_one_initcall+0x60/0x1e0 kernel_init_freeable+0x248/0x2c4 kernel_init+0x20/0x140 ret_from_fork+0x10/0x20 Fix this regression by making scsi_host_busy() check whether the SCSI host tag set has already been initialized. tag_set->ops is set by scsi_mq_setup_tags() just before blk_mq_alloc_tag_set() is called. This fix is based on the assumption that scsi_host_busy() and scsi_mq_setup_tags() calls are serialized. This is the case in the UFS driver.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/143257917b836bd5fc434063030fda199e249624
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/47c8b35a1f1d53aac156480cea0a0c5c82919f03
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5d778778b40bcdfd9f8817fea1ec6ebcbec69c0a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/804b5b8e3545445450387ae6891262c421c49304
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a0b7780602b1b196f47e527fec82166a7e67c4d0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d579f496681c5136d63cb4fbb685511227e73602
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e208fb1660c4a43f06b7b66c3ff22dde84ec3990
Impacted products
Vendor Product Version


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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: core: Fix a regression triggered by scsi_host_busy()\n\nCommit 995412e23bb2 (\"blk-mq: Replace tags-\u003elock with SRCU for tag\niterators\") introduced the following regression:\n\nCall trace:\n __srcu_read_lock+0x30/0x80 (P)\n blk_mq_tagset_busy_iter+0x44/0x300\n scsi_host_busy+0x38/0x70\n ufshcd_print_host_state+0x34/0x1bc\n ufshcd_link_startup.constprop.0+0xe4/0x2e0\n ufshcd_init+0x944/0xf80\n ufshcd_pltfrm_init+0x504/0x820\n ufs_rockchip_probe+0x2c/0x88\n platform_probe+0x5c/0xa4\n really_probe+0xc0/0x38c\n __driver_probe_device+0x7c/0x150\n driver_probe_device+0x40/0x120\n __driver_attach+0xc8/0x1e0\n bus_for_each_dev+0x7c/0xdc\n driver_attach+0x24/0x30\n bus_add_driver+0x110/0x230\n driver_register+0x68/0x130\n __platform_driver_register+0x20/0x2c\n ufs_rockchip_pltform_init+0x1c/0x28\n do_one_initcall+0x60/0x1e0\n kernel_init_freeable+0x248/0x2c4\n kernel_init+0x20/0x140\n ret_from_fork+0x10/0x20\n\nFix this regression by making scsi_host_busy() check whether the SCSI\nhost tag set has already been initialized. tag_set-\u003eops is set by\nscsi_mq_setup_tags() just before blk_mq_alloc_tag_set() is called. This\nfix is based on the assumption that scsi_host_busy() and\nscsi_mq_setup_tags() calls are serialized. This is the case in the UFS\ndriver."
    }
  ],
  "id": "CVE-2025-68224",
  "lastModified": "2025-12-18T15:08:06.237",
  "metrics": {},
  "published": "2025-12-16T14:15:55.767",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/143257917b836bd5fc434063030fda199e249624"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/47c8b35a1f1d53aac156480cea0a0c5c82919f03"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5d778778b40bcdfd9f8817fea1ec6ebcbec69c0a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/804b5b8e3545445450387ae6891262c421c49304"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a0b7780602b1b196f47e527fec82166a7e67c4d0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d579f496681c5136d63cb4fbb685511227e73602"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e208fb1660c4a43f06b7b66c3ff22dde84ec3990"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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