CVE-2023-53509 (GCVE-0-2023-53509)
Vulnerability from cvelistv5
Published
2025-10-01 11:45
Modified
2025-10-01 11:45
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: qed: allow sleep in qed_mcp_trace_dump() By default, qed_mcp_cmd_and_union() delays 10us at a time in a loop that can run 500K times, so calls to qed_mcp_nvm_rd_cmd() may block the current thread for over 5s. We observed thread scheduling delays over 700ms in production, with stacktraces pointing to this code as the culprit. qed_mcp_trace_dump() is called from ethtool, so sleeping is permitted. It already can sleep in qed_mcp_halt(), which calls qed_mcp_cmd(). Add a "can sleep" parameter to qed_find_nvram_image() and qed_nvram_read() so they can sleep during qed_mcp_trace_dump(). qed_mcp_trace_get_meta_info() and qed_mcp_trace_read_meta(), called only by qed_mcp_trace_dump(), allow these functions to sleep. I can't tell if the other caller (qed_grc_dump_mcp_hw_dump()) can sleep, so keep b_can_sleep set to false when it calls these functions. An example stacktrace from a custom warning we added to the kernel showing a thread that has not scheduled despite long needing resched: [ 2745.362925,17] ------------[ cut here ]------------ [ 2745.362941,17] WARNING: CPU: 23 PID: 5640 at arch/x86/kernel/irq.c:233 do_IRQ+0x15e/0x1a0() [ 2745.362946,17] Thread not rescheduled for 744 ms after irq 99 [ 2745.362956,17] Modules linked in: ... [ 2745.363339,17] CPU: 23 PID: 5640 Comm: lldpd Tainted: P O 4.4.182+ #202104120910+6d1da174272d.61x [ 2745.363343,17] Hardware name: FOXCONN MercuryB/Quicksilver Controller, BIOS H11P1N09 07/08/2020 [ 2745.363346,17] 0000000000000000 ffff885ec07c3ed8 ffffffff8131eb2f ffff885ec07c3f20 [ 2745.363358,17] ffffffff81d14f64 ffff885ec07c3f10 ffffffff81072ac2 ffff88be98ed0000 [ 2745.363369,17] 0000000000000063 0000000000000174 0000000000000074 0000000000000000 [ 2745.363379,17] Call Trace: [ 2745.363382,17] <IRQ> [<ffffffff8131eb2f>] dump_stack+0x8e/0xcf [ 2745.363393,17] [<ffffffff81072ac2>] warn_slowpath_common+0x82/0xc0 [ 2745.363398,17] [<ffffffff81072b4c>] warn_slowpath_fmt+0x4c/0x50 [ 2745.363404,17] [<ffffffff810d5a8e>] ? rcu_irq_exit+0xae/0xc0 [ 2745.363408,17] [<ffffffff817c99fe>] do_IRQ+0x15e/0x1a0 [ 2745.363413,17] [<ffffffff817c7ac9>] common_interrupt+0x89/0x89 [ 2745.363416,17] <EOI> [<ffffffff8132aa74>] ? delay_tsc+0x24/0x50 [ 2745.363425,17] [<ffffffff8132aa04>] __udelay+0x34/0x40 [ 2745.363457,17] [<ffffffffa04d45ff>] qed_mcp_cmd_and_union+0x36f/0x7d0 [qed] [ 2745.363473,17] [<ffffffffa04d5ced>] qed_mcp_nvm_rd_cmd+0x4d/0x90 [qed] [ 2745.363490,17] [<ffffffffa04e1dc7>] qed_mcp_trace_dump+0x4a7/0x630 [qed] [ 2745.363504,17] [<ffffffffa04e2556>] ? qed_fw_asserts_dump+0x1d6/0x1f0 [qed] [ 2745.363520,17] [<ffffffffa04e4ea7>] qed_dbg_mcp_trace_get_dump_buf_size+0x37/0x80 [qed] [ 2745.363536,17] [<ffffffffa04ea881>] qed_dbg_feature_size+0x61/0xa0 [qed] [ 2745.363551,17] [<ffffffffa04eb427>] qed_dbg_all_data_size+0x247/0x260 [qed] [ 2745.363560,17] [<ffffffffa0482c10>] qede_get_regs_len+0x30/0x40 [qede] [ 2745.363566,17] [<ffffffff816c9783>] ethtool_get_drvinfo+0xe3/0x190 [ 2745.363570,17] [<ffffffff816cc152>] dev_ethtool+0x1362/0x2140 [ 2745.363575,17] [<ffffffff8109bcc6>] ? finish_task_switch+0x76/0x260 [ 2745.363580,17] [<ffffffff817c2116>] ? __schedule+0x3c6/0x9d0 [ 2745.363585,17] [<ffffffff810dbd50>] ? hrtimer_start_range_ns+0x1d0/0x370 [ 2745.363589,17] [<ffffffff816c1e5b>] ? dev_get_by_name_rcu+0x6b/0x90 [ 2745.363594,17] [<ffffffff816de6a8>] dev_ioctl+0xe8/0x710 [ 2745.363599,17] [<ffffffff816a58a8>] sock_do_ioctl+0x48/0x60 [ 2745.363603,17] [<ffffffff816a5d87>] sock_ioctl+0x1c7/0x280 [ 2745.363608,17] [<ffffffff8111f393>] ? seccomp_phase1+0x83/0x220 [ 2745.363612,17] [<ffffffff811e3503>] do_vfs_ioctl+0x2b3/0x4e0 [ 2745.363616,17] [<ffffffff811e3771>] SyS_ioctl+0x41/0x70 [ 2745.363619,17] [<ffffffff817c6ffe>] entry_SYSCALL_64_fastpath+0x1e/0x79 [ 2745.363622,17] ---[ end trace f6954aa440266421 ]---
References
Impacted products
Vendor Product Version
Linux Linux Version: c965db44462919f613973aa618271f6c3f5a1e64
Version: c965db44462919f613973aa618271f6c3f5a1e64
Version: c965db44462919f613973aa618271f6c3f5a1e64
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/qlogic/qed/qed_debug.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e0387f4f39a8d92302273ac356d1f6b2a38160d8",
              "status": "affected",
              "version": "c965db44462919f613973aa618271f6c3f5a1e64",
              "versionType": "git"
            },
            {
              "lessThan": "50c81b35df01db12b348c5cbf4b1917dc9a7db54",
              "status": "affected",
              "version": "c965db44462919f613973aa618271f6c3f5a1e64",
              "versionType": "git"
            },
            {
              "lessThan": "5401c3e0992860b11fb4b25796e4c4f1921740df",
              "status": "affected",
              "version": "c965db44462919f613973aa618271f6c3f5a1e64",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/qlogic/qed/qed_debug.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.9"
            },
            {
              "lessThan": "4.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.19",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.19",
                  "versionStartIncluding": "4.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.5",
                  "versionStartIncluding": "4.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2",
                  "versionStartIncluding": "4.9",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nqed: allow sleep in qed_mcp_trace_dump()\n\nBy default, qed_mcp_cmd_and_union() delays 10us at a time in a loop\nthat can run 500K times, so calls to qed_mcp_nvm_rd_cmd()\nmay block the current thread for over 5s.\nWe observed thread scheduling delays over 700ms in production,\nwith stacktraces pointing to this code as the culprit.\n\nqed_mcp_trace_dump() is called from ethtool, so sleeping is permitted.\nIt already can sleep in qed_mcp_halt(), which calls qed_mcp_cmd().\nAdd a \"can sleep\" parameter to qed_find_nvram_image() and\nqed_nvram_read() so they can sleep during qed_mcp_trace_dump().\nqed_mcp_trace_get_meta_info() and qed_mcp_trace_read_meta(),\ncalled only by qed_mcp_trace_dump(), allow these functions to sleep.\nI can\u0027t tell if the other caller (qed_grc_dump_mcp_hw_dump()) can sleep,\nso keep b_can_sleep set to false when it calls these functions.\n\nAn example stacktrace from a custom warning we added to the kernel\nshowing a thread that has not scheduled despite long needing resched:\n[ 2745.362925,17] ------------[ cut here ]------------\n[ 2745.362941,17] WARNING: CPU: 23 PID: 5640 at arch/x86/kernel/irq.c:233 do_IRQ+0x15e/0x1a0()\n[ 2745.362946,17] Thread not rescheduled for 744 ms after irq 99\n[ 2745.362956,17] Modules linked in: ...\n[ 2745.363339,17] CPU: 23 PID: 5640 Comm: lldpd Tainted: P           O    4.4.182+ #202104120910+6d1da174272d.61x\n[ 2745.363343,17] Hardware name: FOXCONN MercuryB/Quicksilver Controller, BIOS H11P1N09 07/08/2020\n[ 2745.363346,17]  0000000000000000 ffff885ec07c3ed8 ffffffff8131eb2f ffff885ec07c3f20\n[ 2745.363358,17]  ffffffff81d14f64 ffff885ec07c3f10 ffffffff81072ac2 ffff88be98ed0000\n[ 2745.363369,17]  0000000000000063 0000000000000174 0000000000000074 0000000000000000\n[ 2745.363379,17] Call Trace:\n[ 2745.363382,17]  \u003cIRQ\u003e  [\u003cffffffff8131eb2f\u003e] dump_stack+0x8e/0xcf\n[ 2745.363393,17]  [\u003cffffffff81072ac2\u003e] warn_slowpath_common+0x82/0xc0\n[ 2745.363398,17]  [\u003cffffffff81072b4c\u003e] warn_slowpath_fmt+0x4c/0x50\n[ 2745.363404,17]  [\u003cffffffff810d5a8e\u003e] ? rcu_irq_exit+0xae/0xc0\n[ 2745.363408,17]  [\u003cffffffff817c99fe\u003e] do_IRQ+0x15e/0x1a0\n[ 2745.363413,17]  [\u003cffffffff817c7ac9\u003e] common_interrupt+0x89/0x89\n[ 2745.363416,17]  \u003cEOI\u003e  [\u003cffffffff8132aa74\u003e] ? delay_tsc+0x24/0x50\n[ 2745.363425,17]  [\u003cffffffff8132aa04\u003e] __udelay+0x34/0x40\n[ 2745.363457,17]  [\u003cffffffffa04d45ff\u003e] qed_mcp_cmd_and_union+0x36f/0x7d0 [qed]\n[ 2745.363473,17]  [\u003cffffffffa04d5ced\u003e] qed_mcp_nvm_rd_cmd+0x4d/0x90 [qed]\n[ 2745.363490,17]  [\u003cffffffffa04e1dc7\u003e] qed_mcp_trace_dump+0x4a7/0x630 [qed]\n[ 2745.363504,17]  [\u003cffffffffa04e2556\u003e] ? qed_fw_asserts_dump+0x1d6/0x1f0 [qed]\n[ 2745.363520,17]  [\u003cffffffffa04e4ea7\u003e] qed_dbg_mcp_trace_get_dump_buf_size+0x37/0x80 [qed]\n[ 2745.363536,17]  [\u003cffffffffa04ea881\u003e] qed_dbg_feature_size+0x61/0xa0 [qed]\n[ 2745.363551,17]  [\u003cffffffffa04eb427\u003e] qed_dbg_all_data_size+0x247/0x260 [qed]\n[ 2745.363560,17]  [\u003cffffffffa0482c10\u003e] qede_get_regs_len+0x30/0x40 [qede]\n[ 2745.363566,17]  [\u003cffffffff816c9783\u003e] ethtool_get_drvinfo+0xe3/0x190\n[ 2745.363570,17]  [\u003cffffffff816cc152\u003e] dev_ethtool+0x1362/0x2140\n[ 2745.363575,17]  [\u003cffffffff8109bcc6\u003e] ? finish_task_switch+0x76/0x260\n[ 2745.363580,17]  [\u003cffffffff817c2116\u003e] ? __schedule+0x3c6/0x9d0\n[ 2745.363585,17]  [\u003cffffffff810dbd50\u003e] ? hrtimer_start_range_ns+0x1d0/0x370\n[ 2745.363589,17]  [\u003cffffffff816c1e5b\u003e] ? dev_get_by_name_rcu+0x6b/0x90\n[ 2745.363594,17]  [\u003cffffffff816de6a8\u003e] dev_ioctl+0xe8/0x710\n[ 2745.363599,17]  [\u003cffffffff816a58a8\u003e] sock_do_ioctl+0x48/0x60\n[ 2745.363603,17]  [\u003cffffffff816a5d87\u003e] sock_ioctl+0x1c7/0x280\n[ 2745.363608,17]  [\u003cffffffff8111f393\u003e] ? seccomp_phase1+0x83/0x220\n[ 2745.363612,17]  [\u003cffffffff811e3503\u003e] do_vfs_ioctl+0x2b3/0x4e0\n[ 2745.363616,17]  [\u003cffffffff811e3771\u003e] SyS_ioctl+0x41/0x70\n[ 2745.363619,17]  [\u003cffffffff817c6ffe\u003e] entry_SYSCALL_64_fastpath+0x1e/0x79\n[ 2745.363622,17] ---[ end trace f6954aa440266421 ]---"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-01T11:45:58.762Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/e0387f4f39a8d92302273ac356d1f6b2a38160d8"
        },
        {
          "url": "https://git.kernel.org/stable/c/50c81b35df01db12b348c5cbf4b1917dc9a7db54"
        },
        {
          "url": "https://git.kernel.org/stable/c/5401c3e0992860b11fb4b25796e4c4f1921740df"
        }
      ],
      "title": "qed: allow sleep in qed_mcp_trace_dump()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53509",
    "datePublished": "2025-10-01T11:45:58.762Z",
    "dateReserved": "2025-10-01T11:39:39.405Z",
    "dateUpdated": "2025-10-01T11:45:58.762Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-53509\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-10-01T12:15:54.730\",\"lastModified\":\"2025-10-02T19:11:46.753\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nqed: allow sleep in qed_mcp_trace_dump()\\n\\nBy default, qed_mcp_cmd_and_union() delays 10us at a time in a loop\\nthat can run 500K times, so calls to qed_mcp_nvm_rd_cmd()\\nmay block the current thread for over 5s.\\nWe observed thread scheduling delays over 700ms in production,\\nwith stacktraces pointing to this code as the culprit.\\n\\nqed_mcp_trace_dump() is called from ethtool, so sleeping is permitted.\\nIt already can sleep in qed_mcp_halt(), which calls qed_mcp_cmd().\\nAdd a \\\"can sleep\\\" parameter to qed_find_nvram_image() and\\nqed_nvram_read() so they can sleep during qed_mcp_trace_dump().\\nqed_mcp_trace_get_meta_info() and qed_mcp_trace_read_meta(),\\ncalled only by qed_mcp_trace_dump(), allow these functions to sleep.\\nI can\u0027t tell if the other caller (qed_grc_dump_mcp_hw_dump()) can sleep,\\nso keep b_can_sleep set to false when it calls these functions.\\n\\nAn example stacktrace from a custom warning we added to the kernel\\nshowing a thread that has not scheduled despite long needing resched:\\n[ 2745.362925,17] ------------[ cut here ]------------\\n[ 2745.362941,17] WARNING: CPU: 23 PID: 5640 at arch/x86/kernel/irq.c:233 do_IRQ+0x15e/0x1a0()\\n[ 2745.362946,17] Thread not rescheduled for 744 ms after irq 99\\n[ 2745.362956,17] Modules linked in: ...\\n[ 2745.363339,17] CPU: 23 PID: 5640 Comm: lldpd Tainted: P           O    4.4.182+ #202104120910+6d1da174272d.61x\\n[ 2745.363343,17] Hardware name: FOXCONN MercuryB/Quicksilver Controller, BIOS H11P1N09 07/08/2020\\n[ 2745.363346,17]  0000000000000000 ffff885ec07c3ed8 ffffffff8131eb2f ffff885ec07c3f20\\n[ 2745.363358,17]  ffffffff81d14f64 ffff885ec07c3f10 ffffffff81072ac2 ffff88be98ed0000\\n[ 2745.363369,17]  0000000000000063 0000000000000174 0000000000000074 0000000000000000\\n[ 2745.363379,17] Call Trace:\\n[ 2745.363382,17]  \u003cIRQ\u003e  [\u003cffffffff8131eb2f\u003e] dump_stack+0x8e/0xcf\\n[ 2745.363393,17]  [\u003cffffffff81072ac2\u003e] warn_slowpath_common+0x82/0xc0\\n[ 2745.363398,17]  [\u003cffffffff81072b4c\u003e] warn_slowpath_fmt+0x4c/0x50\\n[ 2745.363404,17]  [\u003cffffffff810d5a8e\u003e] ? rcu_irq_exit+0xae/0xc0\\n[ 2745.363408,17]  [\u003cffffffff817c99fe\u003e] do_IRQ+0x15e/0x1a0\\n[ 2745.363413,17]  [\u003cffffffff817c7ac9\u003e] common_interrupt+0x89/0x89\\n[ 2745.363416,17]  \u003cEOI\u003e  [\u003cffffffff8132aa74\u003e] ? delay_tsc+0x24/0x50\\n[ 2745.363425,17]  [\u003cffffffff8132aa04\u003e] __udelay+0x34/0x40\\n[ 2745.363457,17]  [\u003cffffffffa04d45ff\u003e] qed_mcp_cmd_and_union+0x36f/0x7d0 [qed]\\n[ 2745.363473,17]  [\u003cffffffffa04d5ced\u003e] qed_mcp_nvm_rd_cmd+0x4d/0x90 [qed]\\n[ 2745.363490,17]  [\u003cffffffffa04e1dc7\u003e] qed_mcp_trace_dump+0x4a7/0x630 [qed]\\n[ 2745.363504,17]  [\u003cffffffffa04e2556\u003e] ? qed_fw_asserts_dump+0x1d6/0x1f0 [qed]\\n[ 2745.363520,17]  [\u003cffffffffa04e4ea7\u003e] qed_dbg_mcp_trace_get_dump_buf_size+0x37/0x80 [qed]\\n[ 2745.363536,17]  [\u003cffffffffa04ea881\u003e] qed_dbg_feature_size+0x61/0xa0 [qed]\\n[ 2745.363551,17]  [\u003cffffffffa04eb427\u003e] qed_dbg_all_data_size+0x247/0x260 [qed]\\n[ 2745.363560,17]  [\u003cffffffffa0482c10\u003e] qede_get_regs_len+0x30/0x40 [qede]\\n[ 2745.363566,17]  [\u003cffffffff816c9783\u003e] ethtool_get_drvinfo+0xe3/0x190\\n[ 2745.363570,17]  [\u003cffffffff816cc152\u003e] dev_ethtool+0x1362/0x2140\\n[ 2745.363575,17]  [\u003cffffffff8109bcc6\u003e] ? finish_task_switch+0x76/0x260\\n[ 2745.363580,17]  [\u003cffffffff817c2116\u003e] ? __schedule+0x3c6/0x9d0\\n[ 2745.363585,17]  [\u003cffffffff810dbd50\u003e] ? hrtimer_start_range_ns+0x1d0/0x370\\n[ 2745.363589,17]  [\u003cffffffff816c1e5b\u003e] ? dev_get_by_name_rcu+0x6b/0x90\\n[ 2745.363594,17]  [\u003cffffffff816de6a8\u003e] dev_ioctl+0xe8/0x710\\n[ 2745.363599,17]  [\u003cffffffff816a58a8\u003e] sock_do_ioctl+0x48/0x60\\n[ 2745.363603,17]  [\u003cffffffff816a5d87\u003e] sock_ioctl+0x1c7/0x280\\n[ 2745.363608,17]  [\u003cffffffff8111f393\u003e] ? seccomp_phase1+0x83/0x220\\n[ 2745.363612,17]  [\u003cffffffff811e3503\u003e] do_vfs_ioctl+0x2b3/0x4e0\\n[ 2745.363616,17]  [\u003cffffffff811e3771\u003e] SyS_ioctl+0x41/0x70\\n[ 2745.363619,17]  [\u003cffffffff817c6ffe\u003e] entry_SYSCALL_64_fastpath+0x1e/0x79\\n[ 2745.363622,17] ---[ end trace f6954aa440266421 ]---\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/50c81b35df01db12b348c5cbf4b1917dc9a7db54\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5401c3e0992860b11fb4b25796e4c4f1921740df\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e0387f4f39a8d92302273ac356d1f6b2a38160d8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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