fbdev: omap: use threaded IRQ for LCD DMA

{
  "id": "a9bab15acbb45810b412480a44bea3aeb2391e75da85cbde4d7c7accf0efc5ca",
  "url": "https://osv.dev/vulnerability/CVE-2025-21821",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "fbdev: omap: use threaded IRQ for LCD DMA",
    "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",
    "evidence": "osv:CVE-2025-21821",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.129",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.79",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.16",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.13.4",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2025-21821",
      "aliases": [
        "CVE-2025-21821"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "c73b9099da4fb5703abaa804a0377850eea66cb5"
                },
                {
                  "fixed": "7bbbd311dd503653a2cc86d9226740883051dc92"
                },
                {
                  "fixed": "fb6a5edb60921887d7d10619fcdcbee9759552cb"
                },
                {
                  "fixed": "aa8e22cbedeb626f2a6bda0aea362353d627cd0a"
                },
                {
                  "fixed": "8392ea100f0b86c234c739c6662f39f0ccc0cefd"
                },
                {
                  "fixed": "e4b6b665df815b4841e71b72f06446884e8aad40"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-21821.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.19.0"
                },
                {
                  "fixed": "6.1.129"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.79"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.16"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.13.4"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-21821.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:40.529367618Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/7bbbd311dd503653a2cc86d9226740883051dc92",
        "https://git.kernel.org/stable/c/8392ea100f0b86c234c739c6662f39f0ccc0cefd",
        "https://git.kernel.org/stable/c/aa8e22cbedeb626f2a6bda0aea362353d627cd0a",
        "https://git.kernel.org/stable/c/e4b6b665df815b4841e71b72f06446884e8aad40",
        "https://git.kernel.org/stable/c/fb6a5edb60921887d7d10619fcdcbee9759552cb",
        "https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21821.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-21821",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21821.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-21821",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 507853,
  "published_at": "2025-02-27T20:06:12.722+00:00"
}