Vulnerability-Lookup

FKIE_CVE-2025-21821

Vulnerability from fkie_nvd - Published: 2025-02-27 20:16 - Updated: 2026-06-17 08:44

Severity

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: fbdev: omap: use threaded IRQ for LCD DMA When using touchscreen and framebuffer, Nokia 770 crashes easily with: BUG: scheduling while atomic: irq/144-ads7846/82/0x00010000 Modules linked in: usb_f_ecm g_ether usb_f_rndis u_ether libcomposite configfs omap_udc ohci_omap ohci_hcd CPU: 0 UID: 0 PID: 82 Comm: irq/144-ads7846 Not tainted 6.12.7-770 #2 Hardware name: Nokia 770 Call trace: unwind_backtrace from show_stack+0x10/0x14 show_stack from dump_stack_lvl+0x54/0x5c dump_stack_lvl from __schedule_bug+0x50/0x70 __schedule_bug from __schedule+0x4d4/0x5bc __schedule from schedule+0x34/0xa0 schedule from schedule_preempt_disabled+0xc/0x10 schedule_preempt_disabled from __mutex_lock.constprop.0+0x218/0x3b4 __mutex_lock.constprop.0 from clk_prepare_lock+0x38/0xe4 clk_prepare_lock from clk_set_rate+0x18/0x154 clk_set_rate from sossi_read_data+0x4c/0x168 sossi_read_data from hwa742_read_reg+0x5c/0x8c hwa742_read_reg from send_frame_handler+0xfc/0x300 send_frame_handler from process_pending_requests+0x74/0xd0 process_pending_requests from lcd_dma_irq_handler+0x50/0x74 lcd_dma_irq_handler from __handle_irq_event_percpu+0x44/0x130 __handle_irq_event_percpu from handle_irq_event+0x28/0x68 handle_irq_event from handle_level_irq+0x9c/0x170 handle_level_irq from generic_handle_domain_irq+0x2c/0x3c generic_handle_domain_irq from omap1_handle_irq+0x40/0x8c omap1_handle_irq from generic_handle_arch_irq+0x28/0x3c generic_handle_arch_irq from call_with_stack+0x1c/0x24 call_with_stack from __irq_svc+0x94/0xa8 Exception stack(0xc5255da0 to 0xc5255de8) 5da0: 00000001 c22fc620 00000000 00000000 c08384a8 c106fc00 00000000 c240c248 5dc0: c113a600 c3f6ec30 00000001 00000000 c22fc620 c5255df0 c22fc620 c0279a94 5de0: 60000013 ffffffff __irq_svc from clk_prepare_lock+0x4c/0xe4 clk_prepare_lock from clk_get_rate+0x10/0x74 clk_get_rate from uwire_setup_transfer+0x40/0x180 uwire_setup_transfer from spi_bitbang_transfer_one+0x2c/0x9c spi_bitbang_transfer_one from spi_transfer_one_message+0x2d0/0x664 spi_transfer_one_message from __spi_pump_transfer_message+0x29c/0x498 __spi_pump_transfer_message from __spi_sync+0x1f8/0x2e8 __spi_sync from spi_sync+0x24/0x40 spi_sync from ads7846_halfd_read_state+0x5c/0x1c0 ads7846_halfd_read_state from ads7846_irq+0x58/0x348 ads7846_irq from irq_thread_fn+0x1c/0x78 irq_thread_fn from irq_thread+0x120/0x228 irq_thread from kthread+0xc8/0xe8 kthread from ret_from_fork+0x14/0x28 As a quick fix, switch to a threaded IRQ which provides a stable system.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/7bbbd311dd503653a2cc86d9226740883051dc92	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/8392ea100f0b86c234c739c6662f39f0ccc0cefd	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/aa8e22cbedeb626f2a6bda0aea362353d627cd0a	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e4b6b665df815b4841e71b72f06446884e8aad40	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/fb6a5edb60921887d7d10619fcdcbee9759552cb	Patch
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/video/fbdev/omap/lcd_dma.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "7bbbd311dd503653a2cc86d9226740883051dc92",
              "status": "affected",
              "version": "c73b9099da4fb5703abaa804a0377850eea66cb5",
              "versionType": "git"
            },
            {
              "lessThan": "fb6a5edb60921887d7d10619fcdcbee9759552cb",
              "status": "affected",
              "version": "c73b9099da4fb5703abaa804a0377850eea66cb5",
              "versionType": "git"
            },
            {
              "lessThan": "aa8e22cbedeb626f2a6bda0aea362353d627cd0a",
              "status": "affected",
              "version": "c73b9099da4fb5703abaa804a0377850eea66cb5",
              "versionType": "git"
            },
            {
              "lessThan": "8392ea100f0b86c234c739c6662f39f0ccc0cefd",
              "status": "affected",
              "version": "c73b9099da4fb5703abaa804a0377850eea66cb5",
              "versionType": "git"
            },
            {
              "lessThan": "e4b6b665df815b4841e71b72f06446884e8aad40",
              "status": "affected",
              "version": "c73b9099da4fb5703abaa804a0377850eea66cb5",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/video/fbdev/omap/lcd_dma.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.19"
            },
            {
              "lessThan": "5.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.129",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.79",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.13.*",
              "status": "unaffected",
              "version": "6.13.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.14",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "18BF0B0B-D95C-472C-A99F-DE209F253F6F",
              "versionEndExcluding": "6.1.129",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B16AADE5-B2FD-4C14-B4E4-85E8EDAFE775",
              "versionEndExcluding": "6.6.79",
              "versionStartIncluding": "6.2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "13C8DB18-FC60-425F-84E5-3EDDEC61B2FC",
              "versionEndExcluding": "6.12.16",
              "versionStartIncluding": "6.7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "2A2093ED-74A9-43F9-AC72-50030F374EA4",
              "versionEndExcluding": "6.13.4",
              "versionStartIncluding": "6.13",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: omap: use threaded IRQ for LCD DMA\n\nWhen using touchscreen and framebuffer, Nokia 770 crashes easily with:\n\n    BUG: scheduling while atomic: irq/144-ads7846/82/0x00010000\n    Modules linked in: usb_f_ecm g_ether usb_f_rndis u_ether libcomposite configfs omap_udc ohci_omap ohci_hcd\n    CPU: 0 UID: 0 PID: 82 Comm: irq/144-ads7846 Not tainted 6.12.7-770 #2\n    Hardware name: Nokia 770\n    Call trace:\n     unwind_backtrace from show_stack+0x10/0x14\n     show_stack from dump_stack_lvl+0x54/0x5c\n     dump_stack_lvl from __schedule_bug+0x50/0x70\n     __schedule_bug from __schedule+0x4d4/0x5bc\n     __schedule from schedule+0x34/0xa0\n     schedule from schedule_preempt_disabled+0xc/0x10\n     schedule_preempt_disabled from __mutex_lock.constprop.0+0x218/0x3b4\n     __mutex_lock.constprop.0 from clk_prepare_lock+0x38/0xe4\n     clk_prepare_lock from clk_set_rate+0x18/0x154\n     clk_set_rate from sossi_read_data+0x4c/0x168\n     sossi_read_data from hwa742_read_reg+0x5c/0x8c\n     hwa742_read_reg from send_frame_handler+0xfc/0x300\n     send_frame_handler from process_pending_requests+0x74/0xd0\n     process_pending_requests from lcd_dma_irq_handler+0x50/0x74\n     lcd_dma_irq_handler from __handle_irq_event_percpu+0x44/0x130\n     __handle_irq_event_percpu from handle_irq_event+0x28/0x68\n     handle_irq_event from handle_level_irq+0x9c/0x170\n     handle_level_irq from generic_handle_domain_irq+0x2c/0x3c\n     generic_handle_domain_irq from omap1_handle_irq+0x40/0x8c\n     omap1_handle_irq from generic_handle_arch_irq+0x28/0x3c\n     generic_handle_arch_irq from call_with_stack+0x1c/0x24\n     call_with_stack from __irq_svc+0x94/0xa8\n    Exception stack(0xc5255da0 to 0xc5255de8)\n    5da0: 00000001 c22fc620 00000000 00000000 c08384a8 c106fc00 00000000 c240c248\n    5dc0: c113a600 c3f6ec30 00000001 00000000 c22fc620 c5255df0 c22fc620 c0279a94\n    5de0: 60000013 ffffffff\n     __irq_svc from clk_prepare_lock+0x4c/0xe4\n     clk_prepare_lock from clk_get_rate+0x10/0x74\n     clk_get_rate from uwire_setup_transfer+0x40/0x180\n     uwire_setup_transfer from spi_bitbang_transfer_one+0x2c/0x9c\n     spi_bitbang_transfer_one from spi_transfer_one_message+0x2d0/0x664\n     spi_transfer_one_message from __spi_pump_transfer_message+0x29c/0x498\n     __spi_pump_transfer_message from __spi_sync+0x1f8/0x2e8\n     __spi_sync from spi_sync+0x24/0x40\n     spi_sync from ads7846_halfd_read_state+0x5c/0x1c0\n     ads7846_halfd_read_state from ads7846_irq+0x58/0x348\n     ads7846_irq from irq_thread_fn+0x1c/0x78\n     irq_thread_fn from irq_thread+0x120/0x228\n     irq_thread from kthread+0xc8/0xe8\n     kthread from ret_from_fork+0x14/0x28\n\nAs a quick fix, switch to a threaded IRQ which provides a stable system."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: fbdev: omap: usar IRQ enhebrado para DMA de LCD Al usar la pantalla t\u00e1ctil y el framebuffer, Nokia 770 se bloquea f\u00e1cilmente con: ERROR: scheduling while atomic: irq/144-ads7846/82/0x00010000 Modules linked in: usb_f_ecm g_ether usb_f_rndis u_ether libcomposite configfs omap_udc ohci_omap ohci_hcd CPU: 0 UID: 0 PID: 82 Comm: irq/144-ads7846 Not tainted 6.12.7-770 #2 Hardware name: Nokia 770 Call trace: unwind_backtrace from show_stack+0x10/0x14 show_stack from dump_stack_lvl+0x54/0x5c dump_stack_lvl from __schedule_bug+0x50/0x70 __schedule_bug from __schedule+0x4d4/0x5bc __schedule from schedule+0x34/0xa0 schedule from schedule_preempt_disabled+0xc/0x10 schedule_preempt_disabled from __mutex_lock.constprop.0+0x218/0x3b4 __mutex_lock.constprop.0 from clk_prepare_lock+0x38/0xe4 clk_prepare_lock from clk_set_rate+0x18/0x154 clk_set_rate from sossi_read_data+0x4c/0x168 sossi_read_data from hwa742_read_reg+0x5c/0x8c hwa742_read_reg from send_frame_handler+0xfc/0x300 send_frame_handler from process_pending_requests+0x74/0xd0 process_pending_requests from lcd_dma_irq_handler+0x50/0x74 lcd_dma_irq_handler from __handle_irq_event_percpu+0x44/0x130 __handle_irq_event_percpu from handle_irq_event+0x28/0x68 handle_irq_event from handle_level_irq+0x9c/0x170 handle_level_irq from generic_handle_domain_irq+0x2c/0x3c generic_handle_domain_irq from omap1_handle_irq+0x40/0x8c omap1_handle_irq from generic_handle_arch_irq+0x28/0x3c generic_handle_arch_irq from call_with_stack+0x1c/0x24 call_with_stack from __irq_svc+0x94/0xa8 Exception stack(0xc5255da0 to 0xc5255de8) 5da0: 00000001 c22fc620 00000000 00000000 c08384a8 c106fc00 00000000 c240c248 5dc0: c113a600 c3f6ec30 00000001 00000000 c22fc620 c5255df0 c22fc620 c0279a94 5de0: 60000013 ffffffff __irq_svc from clk_prepare_lock+0x4c/0xe4 clk_prepare_lock from clk_get_rate+0x10/0x74 clk_get_rate from uwire_setup_transfer+0x40/0x180 uwire_setup_transfer from spi_bitbang_transfer_one+0x2c/0x9c spi_bitbang_transfer_one from spi_transfer_one_message+0x2d0/0x664 spi_transfer_one_message from __spi_pump_transfer_message+0x29c/0x498 __spi_pump_transfer_message from __spi_sync+0x1f8/0x2e8 __spi_sync from spi_sync+0x24/0x40 spi_sync from ads7846_halfd_read_state+0x5c/0x1c0 ads7846_halfd_read_state from ads7846_irq+0x58/0x348 ads7846_irq from irq_thread_fn+0x1c/0x78 irq_thread_fn from irq_thread+0x120/0x228 irq_thread from kthread+0xc8/0xe8 kthread from ret_from_fork+0x14/0x28 Como soluci\u00f3n r\u00e1pida, cambie a una IRQ con subprocesos que proporcione un sistema estable."
    }
  ],
  "id": "CVE-2025-21821",
  "lastModified": "2026-06-17T08:44:22.720",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-02-27T20:16:04.613",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/7bbbd311dd503653a2cc86d9226740883051dc92"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/8392ea100f0b86c234c739c6662f39f0ccc0cefd"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/aa8e22cbedeb626f2a6bda0aea362353d627cd0a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/e4b6b665df815b4841e71b72f06446884e8aad40"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/fb6a5edb60921887d7d10619fcdcbee9759552cb"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2025-21821 (GCVE-0-2025-21821)

Vulnerability from cvelistv5 – Published: 2025-02-27 20:06 – Updated: 2026-05-11 21:07

Title

fbdev: omap: use threaded IRQ for LCD DMA

Summary

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6667 records in the last 180 days details

References

6 references

URL	Tags
https://git.kernel.org/stable/c/7bbbd311dd503653a…
https://git.kernel.org/stable/c/fb6a5edb60921887d…
https://git.kernel.org/stable/c/aa8e22cbedeb626f2…
https://git.kernel.org/stable/c/8392ea100f0b86c23…
https://git.kernel.org/stable/c/e4b6b665df815b484…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: c73b9099da4fb5703abaa804a0377850eea66cb5 , < 7bbbd311dd503653a2cc86d9226740883051dc92 (git) Affected: c73b9099da4fb5703abaa804a0377850eea66cb5 , < fb6a5edb60921887d7d10619fcdcbee9759552cb (git) Affected: c73b9099da4fb5703abaa804a0377850eea66cb5 , < aa8e22cbedeb626f2a6bda0aea362353d627cd0a (git) Affected: c73b9099da4fb5703abaa804a0377850eea66cb5 , < 8392ea100f0b86c234c739c6662f39f0ccc0cefd (git) Affected: c73b9099da4fb5703abaa804a0377850eea66cb5 , < e4b6b665df815b4841e71b72f06446884e8aad40 (git)
Linux	Linux	Affected: 5.19 Unaffected: 0 , < 5.19 (semver) Unaffected: 6.1.129 , ≤ 6.1.* (semver) Unaffected: 6.6.79 , ≤ 6.6.* (semver) Unaffected: 6.12.16 , ≤ 6.12.* (semver) Unaffected: 6.13.4 , ≤ 6.13.* (semver) Unaffected: 6.14 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T20:59:54.582Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/video/fbdev/omap/lcd_dma.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "7bbbd311dd503653a2cc86d9226740883051dc92",
              "status": "affected",
              "version": "c73b9099da4fb5703abaa804a0377850eea66cb5",
              "versionType": "git"
            },
            {
              "lessThan": "fb6a5edb60921887d7d10619fcdcbee9759552cb",
              "status": "affected",
              "version": "c73b9099da4fb5703abaa804a0377850eea66cb5",
              "versionType": "git"
            },
            {
              "lessThan": "aa8e22cbedeb626f2a6bda0aea362353d627cd0a",
              "status": "affected",
              "version": "c73b9099da4fb5703abaa804a0377850eea66cb5",
              "versionType": "git"
            },
            {
              "lessThan": "8392ea100f0b86c234c739c6662f39f0ccc0cefd",
              "status": "affected",
              "version": "c73b9099da4fb5703abaa804a0377850eea66cb5",
              "versionType": "git"
            },
            {
              "lessThan": "e4b6b665df815b4841e71b72f06446884e8aad40",
              "status": "affected",
              "version": "c73b9099da4fb5703abaa804a0377850eea66cb5",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/video/fbdev/omap/lcd_dma.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.19"
            },
            {
              "lessThan": "5.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.129",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.79",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.13.*",
              "status": "unaffected",
              "version": "6.13.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.14",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.129",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.79",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.16",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13.4",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.14",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: omap: use threaded IRQ for LCD DMA\n\nWhen using touchscreen and framebuffer, Nokia 770 crashes easily with:\n\n    BUG: scheduling while atomic: irq/144-ads7846/82/0x00010000\n    Modules linked in: usb_f_ecm g_ether usb_f_rndis u_ether libcomposite configfs omap_udc ohci_omap ohci_hcd\n    CPU: 0 UID: 0 PID: 82 Comm: irq/144-ads7846 Not tainted 6.12.7-770 #2\n    Hardware name: Nokia 770\n    Call trace:\n     unwind_backtrace from show_stack+0x10/0x14\n     show_stack from dump_stack_lvl+0x54/0x5c\n     dump_stack_lvl from __schedule_bug+0x50/0x70\n     __schedule_bug from __schedule+0x4d4/0x5bc\n     __schedule from schedule+0x34/0xa0\n     schedule from schedule_preempt_disabled+0xc/0x10\n     schedule_preempt_disabled from __mutex_lock.constprop.0+0x218/0x3b4\n     __mutex_lock.constprop.0 from clk_prepare_lock+0x38/0xe4\n     clk_prepare_lock from clk_set_rate+0x18/0x154\n     clk_set_rate from sossi_read_data+0x4c/0x168\n     sossi_read_data from hwa742_read_reg+0x5c/0x8c\n     hwa742_read_reg from send_frame_handler+0xfc/0x300\n     send_frame_handler from process_pending_requests+0x74/0xd0\n     process_pending_requests from lcd_dma_irq_handler+0x50/0x74\n     lcd_dma_irq_handler from __handle_irq_event_percpu+0x44/0x130\n     __handle_irq_event_percpu from handle_irq_event+0x28/0x68\n     handle_irq_event from handle_level_irq+0x9c/0x170\n     handle_level_irq from generic_handle_domain_irq+0x2c/0x3c\n     generic_handle_domain_irq from omap1_handle_irq+0x40/0x8c\n     omap1_handle_irq from generic_handle_arch_irq+0x28/0x3c\n     generic_handle_arch_irq from call_with_stack+0x1c/0x24\n     call_with_stack from __irq_svc+0x94/0xa8\n    Exception stack(0xc5255da0 to 0xc5255de8)\n    5da0: 00000001 c22fc620 00000000 00000000 c08384a8 c106fc00 00000000 c240c248\n    5dc0: c113a600 c3f6ec30 00000001 00000000 c22fc620 c5255df0 c22fc620 c0279a94\n    5de0: 60000013 ffffffff\n     __irq_svc from clk_prepare_lock+0x4c/0xe4\n     clk_prepare_lock from clk_get_rate+0x10/0x74\n     clk_get_rate from uwire_setup_transfer+0x40/0x180\n     uwire_setup_transfer from spi_bitbang_transfer_one+0x2c/0x9c\n     spi_bitbang_transfer_one from spi_transfer_one_message+0x2d0/0x664\n     spi_transfer_one_message from __spi_pump_transfer_message+0x29c/0x498\n     __spi_pump_transfer_message from __spi_sync+0x1f8/0x2e8\n     __spi_sync from spi_sync+0x24/0x40\n     spi_sync from ads7846_halfd_read_state+0x5c/0x1c0\n     ads7846_halfd_read_state from ads7846_irq+0x58/0x348\n     ads7846_irq from irq_thread_fn+0x1c/0x78\n     irq_thread_fn from irq_thread+0x120/0x228\n     irq_thread from kthread+0xc8/0xe8\n     kthread from ret_from_fork+0x14/0x28\n\nAs a quick fix, switch to a threaded IRQ which provides a stable system."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:07:10.276Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/7bbbd311dd503653a2cc86d9226740883051dc92"
        },
        {
          "url": "https://git.kernel.org/stable/c/fb6a5edb60921887d7d10619fcdcbee9759552cb"
        },
        {
          "url": "https://git.kernel.org/stable/c/aa8e22cbedeb626f2a6bda0aea362353d627cd0a"
        },
        {
          "url": "https://git.kernel.org/stable/c/8392ea100f0b86c234c739c6662f39f0ccc0cefd"
        },
        {
          "url": "https://git.kernel.org/stable/c/e4b6b665df815b4841e71b72f06446884e8aad40"
        }
      ],
      "title": "fbdev: omap: use threaded IRQ for LCD DMA",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-21821",
    "datePublished": "2025-02-27T20:06:12.722Z",
    "dateReserved": "2024-12-29T08:45:45.775Z",
    "dateUpdated": "2026-05-11T21:07:10.276Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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