CVE-2022-50886 (GCVE-0-2022-50886)
Vulnerability from cvelistv5 – Published: 2025-12-30 12:34 – Updated: 2025-12-30 12:34
VLAI?
Title
mmc: toshsd: fix return value check of mmc_add_host()
Summary
In the Linux kernel, the following vulnerability has been resolved:
mmc: toshsd: fix return value check of mmc_add_host()
mmc_add_host() may return error, if we ignore its return value, the memory
that allocated in mmc_alloc_host() will be leaked and it will lead a kernel
crash because of deleting not added device in the remove path.
So fix this by checking the return value and goto error path which will call
mmc_free_host(), besides, free_irq() also needs be called.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux |
Affected:
a5eb8bbd66ccf9f169419f9652544aec771b7c57 , < 34ae492f8d172f0bd193c24cad588b35419ea47a
(git)
Affected: a5eb8bbd66ccf9f169419f9652544aec771b7c57 , < 3329e7b7132ca727263fb0ee214cf52cc6dcaaad (git) Affected: a5eb8bbd66ccf9f169419f9652544aec771b7c57 , < 4f6cb1c685f9e20a4a9fa565e442f5af4dad70ff (git) Affected: a5eb8bbd66ccf9f169419f9652544aec771b7c57 , < 3dbb69a0242c31ea4c9eee22b1c41b515fe509a0 (git) Affected: a5eb8bbd66ccf9f169419f9652544aec771b7c57 , < aabbedcb6c9a72d12d35dc672e83f0c8064d8a61 (git) Affected: a5eb8bbd66ccf9f169419f9652544aec771b7c57 , < 6444079767b68b1fbed0e7668081146e80dcb719 (git) Affected: a5eb8bbd66ccf9f169419f9652544aec771b7c57 , < 647e370dd0ef7e212d8d014bda748e461eab2e8c (git) Affected: a5eb8bbd66ccf9f169419f9652544aec771b7c57 , < bfd77b194c94aefbde4efc30ddf8607dd9244672 (git) Affected: a5eb8bbd66ccf9f169419f9652544aec771b7c57 , < f670744a316ea983113a65313dcd387b5a992444 (git) |
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{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/mmc/host/toshsd.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
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},
{
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"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/mmc/host/toshsd.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "3.19"
},
{
"lessThan": "3.19",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.9.*",
"status": "unaffected",
"version": "4.9.337",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.14.*",
"status": "unaffected",
"version": "4.14.303",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"version": "4.19.270",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"version": "5.4.229",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.163",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.86",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.0.*",
"status": "unaffected",
"version": "6.0.16",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.2",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
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"vulnerable": true
},
{
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{
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}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmmc: toshsd: fix return value check of mmc_add_host()\n\nmmc_add_host() may return error, if we ignore its return value, the memory\nthat allocated in mmc_alloc_host() will be leaked and it will lead a kernel\ncrash because of deleting not added device in the remove path.\n\nSo fix this by checking the return value and goto error path which will call\nmmc_free_host(), besides, free_irq() also needs be called."
}
],
"providerMetadata": {
"dateUpdated": "2025-12-30T12:34:12.782Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/34ae492f8d172f0bd193c24cad588b35419ea47a"
},
{
"url": "https://git.kernel.org/stable/c/3329e7b7132ca727263fb0ee214cf52cc6dcaaad"
},
{
"url": "https://git.kernel.org/stable/c/4f6cb1c685f9e20a4a9fa565e442f5af4dad70ff"
},
{
"url": "https://git.kernel.org/stable/c/3dbb69a0242c31ea4c9eee22b1c41b515fe509a0"
},
{
"url": "https://git.kernel.org/stable/c/aabbedcb6c9a72d12d35dc672e83f0c8064d8a61"
},
{
"url": "https://git.kernel.org/stable/c/6444079767b68b1fbed0e7668081146e80dcb719"
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{
"url": "https://git.kernel.org/stable/c/647e370dd0ef7e212d8d014bda748e461eab2e8c"
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{
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{
"url": "https://git.kernel.org/stable/c/f670744a316ea983113a65313dcd387b5a992444"
}
],
"title": "mmc: toshsd: fix return value check of mmc_add_host()",
"x_generator": {
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}
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"cveId": "CVE-2022-50886",
"datePublished": "2025-12-30T12:34:12.782Z",
"dateReserved": "2025-12-30T12:26:05.425Z",
"dateUpdated": "2025-12-30T12:34:12.782Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
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}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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