CVE-2026-64429 (GCVE-0-2026-64429)

Vulnerability from cvelistv5 – Published: 2026-07-25 08:51 – Updated: 2026-07-25 08:51
VLAI
Title
gpio: eic-sprd: use raw_spinlock_t in the irq startup path
Summary
In the Linux kernel, the following vulnerability has been resolved: gpio: eic-sprd: use raw_spinlock_t in the irq startup path sprd_eic_irq_unmask() enables the GPIO IRQ and then updates controller state through sprd_eic_update(), which takes sprd_eic->lock with spin_lock_irqsave(). The callback can be reached from irq_startup() while setting up a requested IRQ. That path is not sleepable, but on PREEMPT_RT a regular spinlock_t becomes a sleeping lock. This issue was found by our static analysis tool and then manually reviewed against the current tree. The grounded PoC kept the request_threaded_irq() -> __setup_irq() -> irq_startup() -> sprd_eic_irq_unmask() -> sprd_eic_update() carrier and used the original spin_lock_irqsave(&sprd_eic->lock) edge. Lockdep BUG: sleeping function called from invalid context hardirqs last disabled at ... __setup_irq.constprop.0 ... [vuln_msv] sprd_rt_spin_lock_irqsave+0x1c/0x30 [vuln_msv] sprd_eic_update.constprop.0+0x48/0x90 [vuln_msv] sprd_eic_irq_unmask.constprop.0+0x35/0x50 [vuln_msv] __setup_irq.constprop.0+0xd/0x30 [vuln_msv] Convert the Spreadtrum EIC controller lock to raw_spinlock_t. The locked section only serializes MMIO register updates and does not contain sleepable operations, so keeping it non-sleeping is appropriate for the irqchip callbacks.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 25518e024e3a6e5715d672f1daa91e1d100f7436 , < 96612bf2712cd961dbd9b52f3a9b4ab668f57628 (git)
Affected: 25518e024e3a6e5715d672f1daa91e1d100f7436 , < 581ac2ad001ff1128931191f249a7f2074672b7a (git)
Affected: 25518e024e3a6e5715d672f1daa91e1d100f7436 , < e244cd8b51001ba480f274c44dba9002813a4739 (git)
Affected: 25518e024e3a6e5715d672f1daa91e1d100f7436 , < 19d63fd528719ce7d06d9aeb88d25b7d6478198a (git)
Affected: 25518e024e3a6e5715d672f1daa91e1d100f7436 , < 6112fba4150039ccd90e29f2d1b788c73ad7b3dd (git)
Affected: 25518e024e3a6e5715d672f1daa91e1d100f7436 , < 4750909a40da9016185e0ac991510a278cecb1e7 (git)
Affected: 25518e024e3a6e5715d672f1daa91e1d100f7436 , < 5c3c9ec1172a4c3384b8b800b3a8896cc2c1b20e (git)
Affected: 25518e024e3a6e5715d672f1daa91e1d100f7436 , < 90f0109019e6817eb40a486671b7722d1544ae29 (git)
Create a notification for this product.
Linux Linux Affected: 4.17
Unaffected: 0 , < 4.17 (semver)
Unaffected: 5.10.261 , ≤ 5.10.* (semver)
Unaffected: 5.15.212 , ≤ 5.15.* (semver)
Unaffected: 6.1.178 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.96 , ≤ 6.12.* (semver)
Unaffected: 6.18.39 , ≤ 6.18.* (semver)
Unaffected: 7.1.4 , ≤ 7.1.* (semver)
Unaffected: 7.2-rc1 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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          "programFiles": [
            "drivers/gpio/gpio-eic-sprd.c"
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              "versionType": "original_commit_for_fix"
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      "cpeApplicability": [
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          "nodes": [
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                  "versionEndExcluding": "5.10.261",
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                  "vulnerable": true
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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\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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-25T08:51:06.016Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/96612bf2712cd961dbd9b52f3a9b4ab668f57628"
        },
        {
          "url": "https://git.kernel.org/stable/c/581ac2ad001ff1128931191f249a7f2074672b7a"
        },
        {
          "url": "https://git.kernel.org/stable/c/e244cd8b51001ba480f274c44dba9002813a4739"
        },
        {
          "url": "https://git.kernel.org/stable/c/19d63fd528719ce7d06d9aeb88d25b7d6478198a"
        },
        {
          "url": "https://git.kernel.org/stable/c/6112fba4150039ccd90e29f2d1b788c73ad7b3dd"
        },
        {
          "url": "https://git.kernel.org/stable/c/4750909a40da9016185e0ac991510a278cecb1e7"
        },
        {
          "url": "https://git.kernel.org/stable/c/5c3c9ec1172a4c3384b8b800b3a8896cc2c1b20e"
        },
        {
          "url": "https://git.kernel.org/stable/c/90f0109019e6817eb40a486671b7722d1544ae29"
        }
      ],
      "title": "gpio: eic-sprd: use raw_spinlock_t in the irq startup path",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64429",
    "datePublished": "2026-07-25T08:51:06.016Z",
    "dateReserved": "2026-07-19T15:36:31.787Z",
    "dateUpdated": "2026-07-25T08:51:06.016Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-64429",
      "date": "2026-07-26",
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      "percentile": "0.07458"
    },
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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.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/gpio/gpio-eic-sprd.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"25518e024e3a6e5715d672f1daa91e1d100f7436\",\"lessThan\":\"96612bf2712cd961dbd9b52f3a9b4ab668f57628\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"25518e024e3a6e5715d672f1daa91e1d100f7436\",\"lessThan\":\"581ac2ad001ff1128931191f249a7f2074672b7a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"25518e024e3a6e5715d672f1daa91e1d100f7436\",\"lessThan\":\"e244cd8b51001ba480f274c44dba9002813a4739\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"25518e024e3a6e5715d672f1daa91e1d100f7436\",\"lessThan\":\"19d63fd528719ce7d06d9aeb88d25b7d6478198a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"25518e024e3a6e5715d672f1daa91e1d100f7436\",\"lessThan\":\"6112fba4150039ccd90e29f2d1b788c73ad7b3dd\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"25518e024e3a6e5715d672f1daa91e1d100f7436\",\"lessThan\":\"4750909a40da9016185e0ac991510a278cecb1e7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"25518e024e3a6e5715d672f1daa91e1d100f7436\",\"lessThan\":\"5c3c9ec1172a4c3384b8b800b3a8896cc2c1b20e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"25518e024e3a6e5715d672f1daa91e1d100f7436\",\"lessThan\":\"90f0109019e6817eb40a486671b7722d1544ae29\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/gpio/gpio-eic-sprd.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.17\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.17\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.261\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.212\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.178\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.145\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.96\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.39\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.4\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2-rc1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/19d63fd528719ce7d06d9aeb88d25b7d6478198a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4750909a40da9016185e0ac991510a278cecb1e7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/581ac2ad001ff1128931191f249a7f2074672b7a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5c3c9ec1172a4c3384b8b800b3a8896cc2c1b20e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6112fba4150039ccd90e29f2d1b788c73ad7b3dd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/90f0109019e6817eb40a486671b7722d1544ae29\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/96612bf2712cd961dbd9b52f3a9b4ab668f57628\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e244cd8b51001ba480f274c44dba9002813a4739\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "suse_vex": {
      "aggregate_severity": "not set",
      "current_release_date": "2026-07-25T15:59:30Z",
      "cve": "CVE-2026-64429",
      "id": "CVE-2026-64429",
      "initial_release_date": "2026-07-25T15:59:30Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64429",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64429.json",
      "version": "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.

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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