CVE-2025-68320 (GCVE-0-2025-68320)
Vulnerability from cvelistv5
Published
2025-12-16 15:44
Modified
2025-12-16 15:44
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: lan966x: Fix sleeping in atomic context The following warning was seen when we try to connect using ssh to the device. BUG: sleeping function called from invalid context at kernel/locking/mutex.c:575 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 104, name: dropbear preempt_count: 1, expected: 0 INFO: lockdep is turned off. CPU: 0 UID: 0 PID: 104 Comm: dropbear Tainted: G W 6.18.0-rc2-00399-g6f1ab1b109b9-dirty #530 NONE Tainted: [W]=WARN Hardware name: Generic DT based system Call trace: unwind_backtrace from show_stack+0x10/0x14 show_stack from dump_stack_lvl+0x7c/0xac dump_stack_lvl from __might_resched+0x16c/0x2b0 __might_resched from __mutex_lock+0x64/0xd34 __mutex_lock from mutex_lock_nested+0x1c/0x24 mutex_lock_nested from lan966x_stats_get+0x5c/0x558 lan966x_stats_get from dev_get_stats+0x40/0x43c dev_get_stats from dev_seq_printf_stats+0x3c/0x184 dev_seq_printf_stats from dev_seq_show+0x10/0x30 dev_seq_show from seq_read_iter+0x350/0x4ec seq_read_iter from seq_read+0xfc/0x194 seq_read from proc_reg_read+0xac/0x100 proc_reg_read from vfs_read+0xb0/0x2b0 vfs_read from ksys_read+0x6c/0xec ksys_read from ret_fast_syscall+0x0/0x1c Exception stack(0xf0b11fa8 to 0xf0b11ff0) 1fa0: 00000001 00001000 00000008 be9048d8 00001000 00000001 1fc0: 00000001 00001000 00000008 00000003 be905920 0000001e 00000000 00000001 1fe0: 0005404c be9048c0 00018684 b6ec2cd8 It seems that we are using a mutex in a atomic context which is wrong. Change the mutex with a spinlock.
References
Impacted products
Vendor Product Version
Linux Linux Version: 12c2d0a5b8e2a1afc8c7738e19a0d1dd7f3d4007
Version: 12c2d0a5b8e2a1afc8c7738e19a0d1dd7f3d4007
Version: 12c2d0a5b8e2a1afc8c7738e19a0d1dd7f3d4007
Version: 12c2d0a5b8e2a1afc8c7738e19a0d1dd7f3d4007
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/microchip/lan966x/lan966x_ethtool.c",
            "drivers/net/ethernet/microchip/lan966x/lan966x_main.c",
            "drivers/net/ethernet/microchip/lan966x/lan966x_main.h",
            "drivers/net/ethernet/microchip/lan966x/lan966x_vcap_impl.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5a5d2f7727752b64d13263eacd9f8d08a322e662",
              "status": "affected",
              "version": "12c2d0a5b8e2a1afc8c7738e19a0d1dd7f3d4007",
              "versionType": "git"
            },
            {
              "lessThan": "c8ab03aa5bd9fd8bfe5d9552d8605826759fdd4d",
              "status": "affected",
              "version": "12c2d0a5b8e2a1afc8c7738e19a0d1dd7f3d4007",
              "versionType": "git"
            },
            {
              "lessThan": "3ac743c60ec502163c435712d527eeced8d83348",
              "status": "affected",
              "version": "12c2d0a5b8e2a1afc8c7738e19a0d1dd7f3d4007",
              "versionType": "git"
            },
            {
              "lessThan": "0216721ce71252f60d89af49c8dff613358058d3",
              "status": "affected",
              "version": "12c2d0a5b8e2a1afc8c7738e19a0d1dd7f3d4007",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/microchip/lan966x/lan966x_ethtool.c",
            "drivers/net/ethernet/microchip/lan966x/lan966x_main.c",
            "drivers/net/ethernet/microchip/lan966x/lan966x_main.h",
            "drivers/net/ethernet/microchip/lan966x/lan966x_vcap_impl.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.17"
            },
            {
              "lessThan": "5.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.117",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.58",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.117",
                  "versionStartIncluding": "5.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.58",
                  "versionStartIncluding": "5.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.8",
                  "versionStartIncluding": "5.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18",
                  "versionStartIncluding": "5.17",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlan966x: Fix sleeping in atomic context\n\nThe following warning was seen when we try to connect using ssh to the device.\n\nBUG: sleeping function called from invalid context at kernel/locking/mutex.c:575\nin_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 104, name: dropbear\npreempt_count: 1, expected: 0\nINFO: lockdep is turned off.\nCPU: 0 UID: 0 PID: 104 Comm: dropbear Tainted: G        W           6.18.0-rc2-00399-g6f1ab1b109b9-dirty #530 NONE\nTainted: [W]=WARN\nHardware name: Generic DT based system\nCall trace:\n unwind_backtrace from show_stack+0x10/0x14\n show_stack from dump_stack_lvl+0x7c/0xac\n dump_stack_lvl from __might_resched+0x16c/0x2b0\n __might_resched from __mutex_lock+0x64/0xd34\n __mutex_lock from mutex_lock_nested+0x1c/0x24\n mutex_lock_nested from lan966x_stats_get+0x5c/0x558\n lan966x_stats_get from dev_get_stats+0x40/0x43c\n dev_get_stats from dev_seq_printf_stats+0x3c/0x184\n dev_seq_printf_stats from dev_seq_show+0x10/0x30\n dev_seq_show from seq_read_iter+0x350/0x4ec\n seq_read_iter from seq_read+0xfc/0x194\n seq_read from proc_reg_read+0xac/0x100\n proc_reg_read from vfs_read+0xb0/0x2b0\n vfs_read from ksys_read+0x6c/0xec\n ksys_read from ret_fast_syscall+0x0/0x1c\nException stack(0xf0b11fa8 to 0xf0b11ff0)\n1fa0:                   00000001 00001000 00000008 be9048d8 00001000 00000001\n1fc0: 00000001 00001000 00000008 00000003 be905920 0000001e 00000000 00000001\n1fe0: 0005404c be9048c0 00018684 b6ec2cd8\n\nIt seems that we are using a mutex in a atomic context which is wrong.\nChange the mutex with a spinlock."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-16T15:44:18.217Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/5a5d2f7727752b64d13263eacd9f8d08a322e662"
        },
        {
          "url": "https://git.kernel.org/stable/c/c8ab03aa5bd9fd8bfe5d9552d8605826759fdd4d"
        },
        {
          "url": "https://git.kernel.org/stable/c/3ac743c60ec502163c435712d527eeced8d83348"
        },
        {
          "url": "https://git.kernel.org/stable/c/0216721ce71252f60d89af49c8dff613358058d3"
        }
      ],
      "title": "lan966x: Fix sleeping in atomic context",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-68320",
    "datePublished": "2025-12-16T15:44:18.217Z",
    "dateReserved": "2025-12-16T14:48:05.295Z",
    "dateUpdated": "2025-12-16T15:44:18.217Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-68320\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-16T16:16:11.587\",\"lastModified\":\"2025-12-18T15:08:06.237\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nlan966x: Fix sleeping in atomic context\\n\\nThe following warning was seen when we try to connect using ssh to the device.\\n\\nBUG: sleeping function called from invalid context at kernel/locking/mutex.c:575\\nin_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 104, name: dropbear\\npreempt_count: 1, expected: 0\\nINFO: lockdep is turned off.\\nCPU: 0 UID: 0 PID: 104 Comm: dropbear Tainted: G        W           6.18.0-rc2-00399-g6f1ab1b109b9-dirty #530 NONE\\nTainted: [W]=WARN\\nHardware name: Generic DT based system\\nCall trace:\\n unwind_backtrace from show_stack+0x10/0x14\\n show_stack from dump_stack_lvl+0x7c/0xac\\n dump_stack_lvl from __might_resched+0x16c/0x2b0\\n __might_resched from __mutex_lock+0x64/0xd34\\n __mutex_lock from mutex_lock_nested+0x1c/0x24\\n mutex_lock_nested from lan966x_stats_get+0x5c/0x558\\n lan966x_stats_get from dev_get_stats+0x40/0x43c\\n dev_get_stats from dev_seq_printf_stats+0x3c/0x184\\n dev_seq_printf_stats from dev_seq_show+0x10/0x30\\n dev_seq_show from seq_read_iter+0x350/0x4ec\\n seq_read_iter from seq_read+0xfc/0x194\\n seq_read from proc_reg_read+0xac/0x100\\n proc_reg_read from vfs_read+0xb0/0x2b0\\n vfs_read from ksys_read+0x6c/0xec\\n ksys_read from ret_fast_syscall+0x0/0x1c\\nException stack(0xf0b11fa8 to 0xf0b11ff0)\\n1fa0:                   00000001 00001000 00000008 be9048d8 00001000 00000001\\n1fc0: 00000001 00001000 00000008 00000003 be905920 0000001e 00000000 00000001\\n1fe0: 0005404c be9048c0 00018684 b6ec2cd8\\n\\nIt seems that we are using a mutex in a atomic context which is wrong.\\nChange the mutex with a spinlock.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0216721ce71252f60d89af49c8dff613358058d3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3ac743c60ec502163c435712d527eeced8d83348\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5a5d2f7727752b64d13263eacd9f8d08a322e662\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c8ab03aa5bd9fd8bfe5d9552d8605826759fdd4d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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