{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "25518e024e3a6e5715d672f1daa91e1d100f7436"
            },
            {
              "fixed": "96612bf2712cd961dbd9b52f3a9b4ab668f57628"
            },
            {
              "fixed": "581ac2ad001ff1128931191f249a7f2074672b7a"
            },
            {
              "fixed": "e244cd8b51001ba480f274c44dba9002813a4739"
            },
            {
              "fixed": "19d63fd528719ce7d06d9aeb88d25b7d6478198a"
            },
            {
              "fixed": "6112fba4150039ccd90e29f2d1b788c73ad7b3dd"
            },
            {
              "fixed": "4750909a40da9016185e0ac991510a278cecb1e7"
            },
            {
              "fixed": "5c3c9ec1172a4c3384b8b800b3a8896cc2c1b20e"
            },
            {
              "fixed": "90f0109019e6817eb40a486671b7722d1544ae29"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.17.0"
            },
            {
              "fixed": "5.10.261"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.212"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.178"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.96"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.39"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64429.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: eic-sprd: use raw_spinlock_t in the irq startup path\n\nsprd_eic_irq_unmask() enables the GPIO IRQ and then updates controller\nstate through sprd_eic_update(), which takes sprd_eic-\u003elock with\nspin_lock_irqsave().  The callback can be reached from irq_startup()\nwhile setting up a requested IRQ.  That path is not sleepable, but on\nPREEMPT_RT a regular spinlock_t becomes a sleeping lock.\n\nThis issue was found by our static analysis tool and then manually\nreviewed against the current tree.\n\nThe grounded PoC kept the request_threaded_irq() -\u003e __setup_irq() -\u003e\nirq_startup() -\u003e sprd_eic_irq_unmask() -\u003e sprd_eic_update() carrier and\nused the original spin_lock_irqsave(\u0026sprd_eic-\u003elock) edge.  Lockdep\n\n  BUG: sleeping function called from invalid context\n  hardirqs last disabled at ... __setup_irq.constprop.0 ... [vuln_msv]\n  sprd_rt_spin_lock_irqsave+0x1c/0x30 [vuln_msv]\n  sprd_eic_update.constprop.0+0x48/0x90 [vuln_msv]\n  sprd_eic_irq_unmask.constprop.0+0x35/0x50 [vuln_msv]\n  __setup_irq.constprop.0+0xd/0x30 [vuln_msv]\n\nConvert the Spreadtrum EIC controller lock to raw_spinlock_t.  The\nlocked section only serializes MMIO register updates and does not contain\nsleepable operations, so keeping it non-sleeping is appropriate for the\nirqchip callbacks.",
  "id": "CVE-2026-64429",
  "modified": "2026-07-27T03:56:34.937556770Z",
  "published": "2026-07-25T08:51:06.016Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/19d63fd528719ce7d06d9aeb88d25b7d6478198a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4750909a40da9016185e0ac991510a278cecb1e7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/581ac2ad001ff1128931191f249a7f2074672b7a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5c3c9ec1172a4c3384b8b800b3a8896cc2c1b20e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6112fba4150039ccd90e29f2d1b788c73ad7b3dd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/90f0109019e6817eb40a486671b7722d1544ae29"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/96612bf2712cd961dbd9b52f3a9b4ab668f57628"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e244cd8b51001ba480f274c44dba9002813a4739"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64429.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64429"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "gpio: eic-sprd: use raw_spinlock_t in the irq startup path"
}