CVE-2024-50193
Vulnerability from cvelistv5
Published
2024-11-08 05:54
Modified
2024-12-19 09:35
Severity ?
EPSS score ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
x86/entry_32: Clear CPU buffers after register restore in NMI return
CPU buffers are currently cleared after call to exc_nmi, but before
register state is restored. This may be okay for MDS mitigation but not for
RDFS. Because RDFS mitigation requires CPU buffers to be cleared when
registers don't have any sensitive data.
Move CLEAR_CPU_BUFFERS after RESTORE_ALL_NMI.
References
Impacted products
| Vendor | Product | Version | |||||
|---|---|---|---|---|---|---|---|
| ▼ | Linux | Linux |
Version: 50f021f0b985629accf10481a6e89af8b9700583 Version: d54de9f2a127090f2017184e8257795b487d5312 Version: 2e3087505ddb8ba2d3d4c81306cca11e868fcdb9 Version: ca13d8cd8dac25558da4ee8df4dc70e8e7f9d762 Version: a0e2dab44d22b913b4c228c8b52b2a104434b0b3 Version: a0e2dab44d22b913b4c228c8b52b2a104434b0b3 |
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|
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{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"arch/x86/entry/entry_32.S"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
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"versionType": "git"
},
{
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"versionType": "git"
},
{
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"versionType": "git"
},
{
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]
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{
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"programFiles": [
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],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
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"version": "6.8"
},
{
"lessThan": "6.8",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"version": "5.10.228",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.169",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.114",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.58",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.11.*",
"status": "unaffected",
"version": "6.11.5",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.12",
"versionType": "original_commit_for_fix"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/entry_32: Clear CPU buffers after register restore in NMI return\n\nCPU buffers are currently cleared after call to exc_nmi, but before\nregister state is restored. This may be okay for MDS mitigation but not for\nRDFS. Because RDFS mitigation requires CPU buffers to be cleared when\nregisters don\u0027t have any sensitive data.\n\nMove CLEAR_CPU_BUFFERS after RESTORE_ALL_NMI."
}
],
"providerMetadata": {
"dateUpdated": "2024-12-19T09:35:11.006Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/6f44a5fc15b5cece0785bc07453db77d99b0a6de"
},
{
"url": "https://git.kernel.org/stable/c/b6400eb0b347821efc57760221f8fb6d63b9548a"
},
{
"url": "https://git.kernel.org/stable/c/43778de19d2ef129636815274644b9c16e78c66b"
},
{
"url": "https://git.kernel.org/stable/c/227358e89703c344008119be7e8ffa3fdb5b92de"
},
{
"url": "https://git.kernel.org/stable/c/64adf22c4bc73ede920baca5defefb70f190cdbc"
},
{
"url": "https://git.kernel.org/stable/c/48a2440d0f20c826b884e04377ccc1e4696c84e9"
}
],
"title": "x86/entry_32: Clear CPU buffers after register restore in NMI return",
"x_generator": {
"engine": "bippy-5f407fcff5a0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2024-50193",
"datePublished": "2024-11-08T05:54:08.464Z",
"dateReserved": "2024-10-21T19:36:19.967Z",
"dateUpdated": "2024-12-19T09:35:11.006Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
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}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.