{"api_version":"1","generated_at":"2026-07-26T22:08:26+00:00","cve":"CVE-2026-64429","urls":{"html":"https://cve.report/CVE-2026-64429","api":"https://cve.report/api/cve/CVE-2026-64429.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64429","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64429"},"summary":{"title":"gpio: eic-sprd: use raw_spinlock_t in the irq startup path","description":"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->lock 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() -> __setup_irq() ->\nirq_startup() -> sprd_eic_irq_unmask() -> sprd_eic_update() carrier and\nused the original spin_lock_irqsave(&sprd_eic->lock) 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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-25 10:17:27","updated_at":"2026-07-25 10:17:27"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/90f0109019e6817eb40a486671b7722d1544ae29","name":"https://git.kernel.org/stable/c/90f0109019e6817eb40a486671b7722d1544ae29","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e244cd8b51001ba480f274c44dba9002813a4739","name":"https://git.kernel.org/stable/c/e244cd8b51001ba480f274c44dba9002813a4739","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5c3c9ec1172a4c3384b8b800b3a8896cc2c1b20e","name":"https://git.kernel.org/stable/c/5c3c9ec1172a4c3384b8b800b3a8896cc2c1b20e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/96612bf2712cd961dbd9b52f3a9b4ab668f57628","name":"https://git.kernel.org/stable/c/96612bf2712cd961dbd9b52f3a9b4ab668f57628","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/19d63fd528719ce7d06d9aeb88d25b7d6478198a","name":"https://git.kernel.org/stable/c/19d63fd528719ce7d06d9aeb88d25b7d6478198a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6112fba4150039ccd90e29f2d1b788c73ad7b3dd","name":"https://git.kernel.org/stable/c/6112fba4150039ccd90e29f2d1b788c73ad7b3dd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4750909a40da9016185e0ac991510a278cecb1e7","name":"https://git.kernel.org/stable/c/4750909a40da9016185e0ac991510a278cecb1e7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/581ac2ad001ff1128931191f249a7f2074672b7a","name":"https://git.kernel.org/stable/c/581ac2ad001ff1128931191f249a7f2074672b7a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64429","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64429","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 25518e024e3a6e5715d672f1daa91e1d100f7436 96612bf2712cd961dbd9b52f3a9b4ab668f57628 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 25518e024e3a6e5715d672f1daa91e1d100f7436 581ac2ad001ff1128931191f249a7f2074672b7a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 25518e024e3a6e5715d672f1daa91e1d100f7436 e244cd8b51001ba480f274c44dba9002813a4739 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 25518e024e3a6e5715d672f1daa91e1d100f7436 19d63fd528719ce7d06d9aeb88d25b7d6478198a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 25518e024e3a6e5715d672f1daa91e1d100f7436 6112fba4150039ccd90e29f2d1b788c73ad7b3dd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 25518e024e3a6e5715d672f1daa91e1d100f7436 4750909a40da9016185e0ac991510a278cecb1e7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 25518e024e3a6e5715d672f1daa91e1d100f7436 5c3c9ec1172a4c3384b8b800b3a8896cc2c1b20e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 25518e024e3a6e5715d672f1daa91e1d100f7436 90f0109019e6817eb40a486671b7722d1544ae29 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.17","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.17 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.261 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.212 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.178 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.145 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.96 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.39 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.4 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"64429","cve":"CVE-2026-64429","epss":"0.002200000","percentile":"0.125870000","score_date":"2026-07-25","updated_at":"2026-07-26 00:12:33"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/gpio/gpio-eic-sprd.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"96612bf2712cd961dbd9b52f3a9b4ab668f57628","status":"affected","version":"25518e024e3a6e5715d672f1daa91e1d100f7436","versionType":"git"},{"lessThan":"581ac2ad001ff1128931191f249a7f2074672b7a","status":"affected","version":"25518e024e3a6e5715d672f1daa91e1d100f7436","versionType":"git"},{"lessThan":"e244cd8b51001ba480f274c44dba9002813a4739","status":"affected","version":"25518e024e3a6e5715d672f1daa91e1d100f7436","versionType":"git"},{"lessThan":"19d63fd528719ce7d06d9aeb88d25b7d6478198a","status":"affected","version":"25518e024e3a6e5715d672f1daa91e1d100f7436","versionType":"git"},{"lessThan":"6112fba4150039ccd90e29f2d1b788c73ad7b3dd","status":"affected","version":"25518e024e3a6e5715d672f1daa91e1d100f7436","versionType":"git"},{"lessThan":"4750909a40da9016185e0ac991510a278cecb1e7","status":"affected","version":"25518e024e3a6e5715d672f1daa91e1d100f7436","versionType":"git"},{"lessThan":"5c3c9ec1172a4c3384b8b800b3a8896cc2c1b20e","status":"affected","version":"25518e024e3a6e5715d672f1daa91e1d100f7436","versionType":"git"},{"lessThan":"90f0109019e6817eb40a486671b7722d1544ae29","status":"affected","version":"25518e024e3a6e5715d672f1daa91e1d100f7436","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/gpio/gpio-eic-sprd.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.17"},{"lessThan":"4.17","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.261","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.212","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.145","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.96","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.39","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.261","versionStartIncluding":"4.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.212","versionStartIncluding":"4.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.178","versionStartIncluding":"4.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.145","versionStartIncluding":"4.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.96","versionStartIncluding":"4.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.39","versionStartIncluding":"4.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.4","versionStartIncluding":"4.17","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc1","versionStartIncluding":"4.17","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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->lock 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() -> __setup_irq() ->\nirq_startup() -> sprd_eic_irq_unmask() -> sprd_eic_update() carrier and\nused the original spin_lock_irqsave(&sprd_eic->lock) 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"},"nvd":{"publishedDate":"2026-07-25 10:17:27","lastModifiedDate":"2026-07-25 10:17:27","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64429","Ordinal":"1","Title":"gpio: eic-sprd: use raw_spinlock_t in the irq startup path","CVE":"CVE-2026-64429","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64429","Ordinal":"1","NoteData":"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->lock 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() -> __setup_irq() ->\nirq_startup() -> sprd_eic_irq_unmask() -> sprd_eic_update() carrier and\nused the original spin_lock_irqsave(&sprd_eic->lock) 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.","Type":"Description","Title":"gpio: eic-sprd: use raw_spinlock_t in the irq startup path"}]}}}