mmc: mtk-sd: Cancel request timeout work on remove
In the Linux kernel, the following vulnerability has been resolved: mmc: mtk-sd: Cancel request timeout work on remove The driver queues req_timeout while a request is active. msdc_request_done() uses cancel_delayed_work(), which does not wait for a timeout callback that has already started. The timeout callback calls mmc_request_done(), which wakes the request waiter, and then continues to use host->dev_comp and check the SDIO IRQ. During unbind, msdc_drv_remove() can return and the managed mmc_host can be freed before the callback finishes. KASAN reported use-after-free accesses in msdc_request_done() and msdc_recheck_sdio_irq() in each of three unbind tests. The same tests completed without a kernel diagnostic after this change. Call cancel_delayed_work_sync() after mmc_remove_host() has stopped new requests and before the driver releases the host resources.
CVE-2026-99035
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-99035
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "208489032bdd8d4a7de50f3057c175058f271956",
"lessThan": "9e799f25c420e759641eb25102967ea091fc758f",
"versionType": "git"
},
{
"status": "affected",
"version": "208489032bdd8d4a7de50f3057c175058f271956",
"lessThan": "f37e0367ad6f2147a0b37564b442b7a25bec0d23",
"versionType": "git"
},
{
"status": "affected",
"version": "208489032bdd8d4a7de50f3057c175058f271956",
"lessThan": "46e75703ca3f00fb8c935b3ce35b90836e34e8af",
"versionType": "git"
},
{
"status": "affected",
"version": "208489032bdd8d4a7de50f3057c175058f271956",
"lessThan": "edef1355224c0799a502a46b71d3649fa0dd218e",
"versionType": "git"
},
{
"status": "affected",
"version": "208489032bdd8d4a7de50f3057c175058f271956",
"lessThan": "b38af5386a74416e898955443f2e26547b358cb2",
"versionType": "git"
}
],
"programFiles": [
"drivers/mmc/host/mtk-sd.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.2"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.2",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.113",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.57",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.11",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/mmc/host/mtk-sd.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-99035
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #52868 · Revision 1
- Added to Heist Feed
- Publisher date