GHSA-Q4VM-JRGJ-PMVW
Vulnerability from github – Published: 2026-10-06 09:31 – Updated: 2026-10-06 09:31In the Linux kernel, the following vulnerability has been resolved:
mmc: core: Cancel SDIO IRQ work before freeing host
A host controller that uses sdio_signal_irq() schedules host->sdio_irq_work from its interrupt handler. That work is only cancelled on the suspend path (mmc_sdio_suspend()), not on the remove/free path, so a worker armed just before the controller freed its IRQ can run after mmc_host_classdev_release() has freed the host and dereference it through container_of().
Cancel host->sdio_irq_work in mmc_free_host(), like the existing host->detect drain added by commit 1036f69e2513 ("mmc: core: Cancel delayed work before releasing host").
This issue was found by an in-house static analysis tool.
{
"affected": [],
"aliases": [
"CVE-2026-98213"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-06T09:18:07Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmmc: core: Cancel SDIO IRQ work before freeing host\n\nA host controller that uses sdio_signal_irq() schedules host-\u003esdio_irq_work\nfrom its interrupt handler. That work is only cancelled on the suspend\npath (mmc_sdio_suspend()), not on the remove/free path, so a worker armed\njust before the controller freed its IRQ can run after\nmmc_host_classdev_release() has freed the host and dereference it through\ncontainer_of().\n\nCancel host-\u003esdio_irq_work in mmc_free_host(), like the existing\nhost-\u003edetect drain added by commit 1036f69e2513 (\"mmc: core: Cancel\ndelayed work before releasing host\").\n\nThis issue was found by an in-house static analysis tool.",
"id": "GHSA-q4vm-jrgj-pmvw",
"modified": "2026-10-06T09:31:30Z",
"published": "2026-10-06T09:31:30Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98213"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0bf3d168a2cc20b120d6b50f0a8ac5b40ff4d589"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1d6e7315ee1c992b4ca42c9b11c5ed0e925a00e0"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2a863458828ade0671c2bc2e469bbd7f2340eb03"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4553b5004eca9c9eae29a421f1a9c4d5db2c9114"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6feadbecdae60a6324c967f3b1493741083793a3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/bae1cf4f9902b2065bd78b759c7fe6312855f05e"
}
],
"schema_version": "1.4.0",
"severity": []
}
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