CVE-2022-48803 (GCVE-0-2022-48803)

Vulnerability from cvelistv5 – Published: 2024-07-16 11:43 – Updated: 2026-08-05 08:52
VLAI
Title
phy: ti: Fix missing sentinel for clk_div_table
Summary
In the Linux kernel, the following vulnerability has been resolved: phy: ti: Fix missing sentinel for clk_div_table _get_table_maxdiv() tries to access "clk_div_table" array out of bound defined in phy-j721e-wiz.c. Add a sentinel entry to prevent the following global-out-of-bounds error reported by enabling KASAN. [ 9.552392] BUG: KASAN: global-out-of-bounds in _get_maxdiv+0xc0/0x148 [ 9.558948] Read of size 4 at addr ffff8000095b25a4 by task kworker/u4:1/38 [ 9.565926] [ 9.567441] CPU: 1 PID: 38 Comm: kworker/u4:1 Not tainted 5.16.0-116492-gdaadb3bd0e8d-dirty #360 [ 9.576242] Hardware name: Texas Instruments J721e EVM (DT) [ 9.581832] Workqueue: events_unbound deferred_probe_work_func [ 9.587708] Call trace: [ 9.590174] dump_backtrace+0x20c/0x218 [ 9.594038] show_stack+0x18/0x68 [ 9.597375] dump_stack_lvl+0x9c/0xd8 [ 9.601062] print_address_description.constprop.0+0x78/0x334 [ 9.606830] kasan_report+0x1f0/0x260 [ 9.610517] __asan_load4+0x9c/0xd8 [ 9.614030] _get_maxdiv+0xc0/0x148 [ 9.617540] divider_determine_rate+0x88/0x488 [ 9.622005] divider_round_rate_parent+0xc8/0x124 [ 9.626729] wiz_clk_div_round_rate+0x54/0x68 [ 9.631113] clk_core_determine_round_nolock+0x124/0x158 [ 9.636448] clk_core_round_rate_nolock+0x68/0x138 [ 9.641260] clk_core_set_rate_nolock+0x268/0x3a8 [ 9.645987] clk_set_rate+0x50/0xa8 [ 9.649499] cdns_sierra_phy_init+0x88/0x248 [ 9.653794] phy_init+0x98/0x108 [ 9.657046] cdns_pcie_enable_phy+0xa0/0x170 [ 9.661340] cdns_pcie_init_phy+0x250/0x2b0 [ 9.665546] j721e_pcie_probe+0x4b8/0x798 [ 9.669579] platform_probe+0x8c/0x108 [ 9.673350] really_probe+0x114/0x630 [ 9.677037] __driver_probe_device+0x18c/0x220 [ 9.681505] driver_probe_device+0xac/0x150 [ 9.685712] __device_attach_driver+0xec/0x170 [ 9.690178] bus_for_each_drv+0xf0/0x158 [ 9.694124] __device_attach+0x184/0x210 [ 9.698070] device_initial_probe+0x14/0x20 [ 9.702277] bus_probe_device+0xec/0x100 [ 9.706223] deferred_probe_work_func+0x124/0x180 [ 9.710951] process_one_work+0x4b0/0xbc0 [ 9.714983] worker_thread+0x74/0x5d0 [ 9.718668] kthread+0x214/0x230 [ 9.721919] ret_from_fork+0x10/0x20 [ 9.725520] [ 9.727032] The buggy address belongs to the variable: [ 9.732183] clk_div_table+0x24/0x440
Severity
7.3 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 16:58 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 091876cc355d6739e393efa4b3d07f451a6a035c , < 3c75d1017cb362b6a4e0935746ef5da28250919f (git)
Affected: 091876cc355d6739e393efa4b3d07f451a6a035c , < 7a360e546ad9e7c3fd53d6bb60348c660cd28f54 (git)
Affected: 091876cc355d6739e393efa4b3d07f451a6a035c , < 5b0c9569135a37348c1267c81e8b0274b21a86ed (git)
Affected: 091876cc355d6739e393efa4b3d07f451a6a035c , < 6d1e6bcb31663ee83aaea1f171f3dbfe95dd4a69 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.6
Unaffected: 0 , < 5.6 (semver)
Unaffected: 5.10.101 , ≤ 5.10.* (semver)
Unaffected: 5.15.24 , ≤ 5.15.* (semver)
Unaffected: 5.16.10 , ≤ 5.16.* (semver)
Unaffected: 5.17 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nphy: ti: Fix missing sentinel for clk_div_table\n\n_get_table_maxdiv() tries to access \"clk_div_table\" array out of bound\ndefined in phy-j721e-wiz.c. Add a sentinel entry to prevent\nthe following global-out-of-bounds error reported by enabling KASAN.\n\n[    9.552392] BUG: KASAN: global-out-of-bounds in _get_maxdiv+0xc0/0x148\n[    9.558948] Read of size 4 at addr ffff8000095b25a4 by task kworker/u4:1/38\n[    9.565926]\n[    9.567441] CPU: 1 PID: 38 Comm: kworker/u4:1 Not tainted 5.16.0-116492-gdaadb3bd0e8d-dirty #360\n[    9.576242] Hardware name: Texas Instruments J721e EVM (DT)\n[    9.581832] Workqueue: events_unbound deferred_probe_work_func\n[    9.587708] Call trace:\n[    9.590174]  dump_backtrace+0x20c/0x218\n[    9.594038]  show_stack+0x18/0x68\n[    9.597375]  dump_stack_lvl+0x9c/0xd8\n[    9.601062]  print_address_description.constprop.0+0x78/0x334\n[    9.606830]  kasan_report+0x1f0/0x260\n[    9.610517]  __asan_load4+0x9c/0xd8\n[    9.614030]  _get_maxdiv+0xc0/0x148\n[    9.617540]  divider_determine_rate+0x88/0x488\n[    9.622005]  divider_round_rate_parent+0xc8/0x124\n[    9.626729]  wiz_clk_div_round_rate+0x54/0x68\n[    9.631113]  clk_core_determine_round_nolock+0x124/0x158\n[    9.636448]  clk_core_round_rate_nolock+0x68/0x138\n[    9.641260]  clk_core_set_rate_nolock+0x268/0x3a8\n[    9.645987]  clk_set_rate+0x50/0xa8\n[    9.649499]  cdns_sierra_phy_init+0x88/0x248\n[    9.653794]  phy_init+0x98/0x108\n[    9.657046]  cdns_pcie_enable_phy+0xa0/0x170\n[    9.661340]  cdns_pcie_init_phy+0x250/0x2b0\n[    9.665546]  j721e_pcie_probe+0x4b8/0x798\n[    9.669579]  platform_probe+0x8c/0x108\n[    9.673350]  really_probe+0x114/0x630\n[    9.677037]  __driver_probe_device+0x18c/0x220\n[    9.681505]  driver_probe_device+0xac/0x150\n[    9.685712]  __device_attach_driver+0xec/0x170\n[    9.690178]  bus_for_each_drv+0xf0/0x158\n[    9.694124]  __device_attach+0x184/0x210\n[    9.698070]  device_initial_probe+0x14/0x20\n[    9.702277]  bus_probe_device+0xec/0x100\n[    9.706223]  deferred_probe_work_func+0x124/0x180\n[    9.710951]  process_one_work+0x4b0/0xbc0\n[    9.714983]  worker_thread+0x74/0x5d0\n[    9.718668]  kthread+0x214/0x230\n[    9.721919]  ret_from_fork+0x10/0x20\n[    9.725520]\n[    9.727032] The buggy address belongs to the variable:\n[    9.732183]  clk_div_table+0x24/0x440"
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: phy: ti: corrige el centinela faltante para clk_div_table _get_table_maxdiv() intenta acceder a la matriz \"clk_div_table\" fuera del l\u00edmite definido en phy-j721e-wiz.c. Agregue una entrada centinela para evitar el siguiente error global fuera de los l\u00edmites informado al habilitar KASAN. [9.552392] ERROR: KASAN: global fuera de los l\u00edmites en _get_maxdiv+0xc0/0x148 [9.558948] Lectura de tama\u00f1o 4 en la direcci\u00f3n ffff8000095b25a4 por tarea kworker/u4:1/38 [9.565926] [9.567441] CPU: 1 PID: 38 Comm: kworker/u4:1 No contaminado 5.16.0-116492-gdaadb3bd0e8d-dirty #360 [ 9.576242] Nombre de hardware: Texas Instruments J721e EVM (DT) [ 9.581832] Cola de trabajo: events_unbound deferred_probe_work_func [ 9.587708] Seguimiento de llamadas: [ 9.590174] dump_backtrace+0x20c/0x218 [ 9.594038] show_stack+0x18/0x68 [ 9.597375] dump_stack_lvl+0x9c/0xd8 [ 9.601062] print_address_description.constprop.0+0x78/0x334 [ 9.606830] 0x1f0/0x260 [9.610517] __asan_load4+0x9c/0xd8 [ 9.614030] _get_maxdiv+0xc0/0x148 [ 9.617540] divider_determinate_rate+0x88/0x488 [ 9.622005] divider_round_rate_parent+0xc8/0x124 [ 9.626729] wiz_clk_div_round_rate+0x54/0x68 [ 9.6 31113] clk_core_determine_round_nolock+0x124/0x158 [ 9.636448] clk_core_round_rate_nolock+0x68/0x138 [ 9.641260] clk_core_set_rate_nolock+0x268/0x3a8 [ 9.645987] clk_set_rate+0x50/0xa8 [ 9.649499] cdns_sierra_phy_init+0x88/0x248 [ 9.653794] phy_init+0x98/0x108 [ 9.657046] cdns_pcie_enable_phy+0xa0/0x170 [ 9.661340] cdns_pcie_init_phy+0x250/0x2b0 [ 9.665546] j721e_pcie_probe+ 0x4b8/0x798 [ 9.669579] platform_probe+0x8c/0x108 [ 9.673350] very_probe+0x114/0x630 [ 9.677037] __driver_probe_device+0x18c/0x220 [ 9.681505] driver_probe_device+0xac/0x 150 [9.685712] __device_attach_driver+0xec/0x170 [9.690178] bus_for_each_drv+0xf0/ 0x158 [ 9.694124] __device_attach+0x184/0x210 [ 9.698070] device_initial_probe+0x14/0x20 [ 9.702277] bus_probe_device+0xec/0x100 [ 9.706223] deferred_probe_work_func+0x124/0x1 80 [ 9.710951] proceso_un_trabajo+0x4b0/0xbc0 [ 9.714983] hilo_trabajador+0x74/0x5d0 [ 9.718668] kthread+0x214/0x230 [ 9.721919] ret_from_fork+0x10/0x20 [ 9.725520] [ 9.727032] La direcci\u00f3n del error pertenece a la variable: [ 9.732183] clk_div_table+0x24/0x440"
          }
        ],
        "id": "CVE-2022-48803",
        "lastModified": "2026-08-04T10:17:22.427",
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                "scope": "UNCHANGED",
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                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
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      "current_release_date": "2026-08-04T23:00:52+00:00",
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      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: phy: ti: Fix missing sentinel for clk_div_table",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-48803.json",
      "version": "3"
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    "vulnrichment": {
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                "url": "https://git.kernel.org/stable/c/6d1e6bcb31663ee83aaea1f171f3dbfe95dd4a69"
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            "title": "CVE Program Container"
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              {
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                    "id": "CVE-2022-48803",
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            "title": "CISA ADP Vulnrichment"
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        "cna": {
          "affected": [
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              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
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              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
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                {
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              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
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                {
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                  "version": "0",
                  "versionType": "semver"
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                  "version": "5.10.101",
                  "versionType": "semver"
                },
                {
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                  "status": "unaffected",
                  "version": "5.15.24",
                  "versionType": "semver"
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                  "status": "unaffected",
                  "version": "5.16.10",
                  "versionType": "semver"
                },
                {
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                  "status": "unaffected",
                  "version": "5.17",
                  "versionType": "original_commit_for_fix"
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            }
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                      "versionEndExcluding": "5.10.101",
                      "versionStartIncluding": "5.6",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.24",
                      "versionStartIncluding": "5.6",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.16.10",
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                      "vulnerable": true
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                    {
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                  "negate": false,
                  "operator": "OR"
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          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nphy: ti: Fix missing sentinel for clk_div_table\n\n_get_table_maxdiv() tries to access \"clk_div_table\" array out of bound\ndefined in phy-j721e-wiz.c. Add a sentinel entry to prevent\nthe following global-out-of-bounds error reported by enabling KASAN.\n\n[    9.552392] BUG: KASAN: global-out-of-bounds in _get_maxdiv+0xc0/0x148\n[    9.558948] Read of size 4 at addr ffff8000095b25a4 by task kworker/u4:1/38\n[    9.565926]\n[    9.567441] CPU: 1 PID: 38 Comm: kworker/u4:1 Not tainted 5.16.0-116492-gdaadb3bd0e8d-dirty #360\n[    9.576242] Hardware name: Texas Instruments J721e EVM (DT)\n[    9.581832] Workqueue: events_unbound deferred_probe_work_func\n[    9.587708] Call trace:\n[    9.590174]  dump_backtrace+0x20c/0x218\n[    9.594038]  show_stack+0x18/0x68\n[    9.597375]  dump_stack_lvl+0x9c/0xd8\n[    9.601062]  print_address_description.constprop.0+0x78/0x334\n[    9.606830]  kasan_report+0x1f0/0x260\n[    9.610517]  __asan_load4+0x9c/0xd8\n[    9.614030]  _get_maxdiv+0xc0/0x148\n[    9.617540]  divider_determine_rate+0x88/0x488\n[    9.622005]  divider_round_rate_parent+0xc8/0x124\n[    9.626729]  wiz_clk_div_round_rate+0x54/0x68\n[    9.631113]  clk_core_determine_round_nolock+0x124/0x158\n[    9.636448]  clk_core_round_rate_nolock+0x68/0x138\n[    9.641260]  clk_core_set_rate_nolock+0x268/0x3a8\n[    9.645987]  clk_set_rate+0x50/0xa8\n[    9.649499]  cdns_sierra_phy_init+0x88/0x248\n[    9.653794]  phy_init+0x98/0x108\n[    9.657046]  cdns_pcie_enable_phy+0xa0/0x170\n[    9.661340]  cdns_pcie_init_phy+0x250/0x2b0\n[    9.665546]  j721e_pcie_probe+0x4b8/0x798\n[    9.669579]  platform_probe+0x8c/0x108\n[    9.673350]  really_probe+0x114/0x630\n[    9.677037]  __driver_probe_device+0x18c/0x220\n[    9.681505]  driver_probe_device+0xac/0x150\n[    9.685712]  __device_attach_driver+0xec/0x170\n[    9.690178]  bus_for_each_drv+0xf0/0x158\n[    9.694124]  __device_attach+0x184/0x210\n[    9.698070]  device_initial_probe+0x14/0x20\n[    9.702277]  bus_probe_device+0xec/0x100\n[    9.706223]  deferred_probe_work_func+0x124/0x180\n[    9.710951]  process_one_work+0x4b0/0xbc0\n[    9.714983]  worker_thread+0x74/0x5d0\n[    9.718668]  kthread+0x214/0x230\n[    9.721919]  ret_from_fork+0x10/0x20\n[    9.725520]\n[    9.727032] The buggy address belongs to the variable:\n[    9.732183]  clk_div_table+0x24/0x440"
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 7.3,
                "baseSeverity": "HIGH",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H",
                "version": "3.1"
              },
              "scenarios": [
                {
                  "lang": "en",
                  "value": "AV:L - The bug is in the TI J721E WIZ SERDES wrapper clock table and is reached only through local platform driver probe (deferred_probe \u2192 j721e_pcie_probe \u2192 phy_init \u2192 clk_set_rate); it is not reachable via network packets or physical plug-in interfaces.\nAC:L - On affected TI K3/J721E hardware the missing sentinel causes a deterministic out-of-bounds walk of clk_div_table on every clk_set_rate of the dig-div clocks during PHY init, with no race or attacker-uncontrollable memory layout requirement.\nPR:L - The vulnerable path runs automatically during boot/deferred probe (and again on PCIe resume via cdns_pcie_enable_phy), so no elevated capability is required for the defect to manifest; PR:H is not chosen because attacker action or real root is not needed.\nUI:N - Exploitation requires no victim action such as opening a file, mounting a filesystem, or writing a sysfs attribute; probe/resume triggers the OOB read on its own.\nS:U - The out-of-bounds read and any resulting incorrect divider programming stay within the kernel/SoC security authority; there is no VM, IOMMU, or sandbox boundary crossing.\nC:H - This is an unbounded global out-of-bounds read past clk_div_table into adjacent kernel .rodata/.data until a zero div field is found, and those values feed maxdiv used for further rate decisions, so confidentiality impact is High per OOB-read guidance.\nI:L - Corrupted maxdiv can cause incorrect but width-bounded divider values to be programmed via regmap_field_write into SERDES clock registers; that is limited hardware-state modification, not an arbitrary kernel write or control-flow hijack.\nA:H - The defect produces a KASAN global-out-of-bounds condition that panics under panic_on_warn, and a runaway table walk or misprogrammed PHY reference clocks can crash or permanently disrupt PCIe/SERDES bring-up on automotive and industrial J721E platforms."
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-05T08:52:27.780Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/3c75d1017cb362b6a4e0935746ef5da28250919f"
            },
            {
              "url": "https://git.kernel.org/stable/c/7a360e546ad9e7c3fd53d6bb60348c660cd28f54"
            },
            {
              "url": "https://git.kernel.org/stable/c/5b0c9569135a37348c1267c81e8b0274b21a86ed"
            },
            {
              "url": "https://git.kernel.org/stable/c/6d1e6bcb31663ee83aaea1f171f3dbfe95dd4a69"
            }
          ],
          "title": "phy: ti: Fix missing sentinel for clk_div_table",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2022-48803",
        "datePublished": "2024-07-16T11:43:55.616Z",
        "dateReserved": "2024-07-16T11:38:08.896Z",
        "dateUpdated": "2026-08-05T08:52:27.780Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.