227 lines
11 KiB
JSON
227 lines
11 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-64428",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-07-19T15:36:31.787Z",
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"datePublished": "2026-07-25T08:51:05.460Z",
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"dateUpdated": "2026-08-17T04:55:28.748Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-17T04:55:28.748Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: sch: use raw_spinlock_t in the irq startup path\n\nsch_irq_unmask() enables the GPIO IRQ and then updates the controller\nstate through sch_irq_mask_unmask(), which takes sch->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() -> sch_irq_unmask() -> sch_irq_mask_unmask() carrier and\nused the original spin_lock_irqsave(&sch->lock) edge. Lockdep reported:\n\n BUG: sleeping function called from invalid context\n hardirqs last disabled at ... __setup_irq.constprop.0 ... [vuln_msv]\n sch_rt_spin_lock_irqsave+0x1c/0x30 [vuln_msv]\n sch_irq_mask_unmask.constprop.0+0x31/0x70 [vuln_msv]\n __setup_irq.constprop.0+0xd/0x30 [vuln_msv]\n\nConvert the SCH controller lock to raw_spinlock_t. The same lock is\nalso used by the GPIO direction and value callbacks, but those critical\nsections only update MMIO-backed GPIO registers and do not contain\nsleepable operations. Keeping this register lock non-sleeping is\ntherefore appropriate for the irqchip callbacks and does not change the\nGPIO-side locking contract."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/gpio/gpio-sch.c"
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],
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"versions": [
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{
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"version": "7a81638485c1a62a87b4c391ecc9c651a4a9dc19",
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"lessThan": "3b1aa05ec27eeccc889ecaa3f2d9baa9f453e50d",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7a81638485c1a62a87b4c391ecc9c651a4a9dc19",
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"lessThan": "4f03a15cc73c83740fc355ee22b336492d17b4da",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7a81638485c1a62a87b4c391ecc9c651a4a9dc19",
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"lessThan": "7a550256d68bbdfa0903ab1c4595c04a6815493a",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7a81638485c1a62a87b4c391ecc9c651a4a9dc19",
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"lessThan": "a235cec779bb39ec8f961a935b28a2ce278c6c64",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7a81638485c1a62a87b4c391ecc9c651a4a9dc19",
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"lessThan": "4508366ab7dd0c2917a51a9c2e23cc1b9d35157a",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7a81638485c1a62a87b4c391ecc9c651a4a9dc19",
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"lessThan": "41cad91a09d69e8fff4e936db29b1054b4e9f9f7",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "7a81638485c1a62a87b4c391ecc9c651a4a9dc19",
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"lessThan": "286533cb14a3c8a8bd39ff64ea2fc8e1aa0f638b",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/gpio/gpio-sch.c"
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],
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"versions": [
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{
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"version": "5.13",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "5.13",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.212",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.178",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.145",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.97",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.39",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.1.4",
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"lessThanOrEqual": "7.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.13",
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"versionEndExcluding": "5.15.212"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.13",
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"versionEndExcluding": "6.1.178"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.13",
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"versionEndExcluding": "6.6.145"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.13",
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"versionEndExcluding": "6.12.97"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.13",
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"versionEndExcluding": "6.18.39"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.13",
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"versionEndExcluding": "7.1.4"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.13",
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"versionEndExcluding": "7.2"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/3b1aa05ec27eeccc889ecaa3f2d9baa9f453e50d"
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},
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{
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"url": "https://git.kernel.org/stable/c/4f03a15cc73c83740fc355ee22b336492d17b4da"
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},
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{
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"url": "https://git.kernel.org/stable/c/7a550256d68bbdfa0903ab1c4595c04a6815493a"
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},
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{
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"url": "https://git.kernel.org/stable/c/a235cec779bb39ec8f961a935b28a2ce278c6c64"
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},
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{
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"url": "https://git.kernel.org/stable/c/4508366ab7dd0c2917a51a9c2e23cc1b9d35157a"
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},
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{
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"url": "https://git.kernel.org/stable/c/41cad91a09d69e8fff4e936db29b1054b4e9f9f7"
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},
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{
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"url": "https://git.kernel.org/stable/c/286533cb14a3c8a8bd39ff64ea2fc8e1aa0f638b"
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}
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],
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"title": "gpio: sch: use raw_spinlock_t in the irq startup path",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |