CVE-2023-34324
Vulnerability from cvelistv5
Published
2024-01-05 16:30
Modified
2024-08-02 16:10
Severity ?
EPSS score ?
Summary
Possible deadlock in Linux kernel event handling
References
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-02T16:10:06.472Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
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"references": [
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"tags": [
"x_transferred"
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"url": "https://xenbits.xenproject.org/xsa/advisory-441.html"
},
{
"tags": [
"x_transferred"
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"url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html"
},
{
"tags": [
"x_transferred"
],
"url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html"
}
],
"title": "CVE Program Container"
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],
"cna": {
"affected": [
{
"defaultStatus": "unknown",
"product": "Linux",
"vendor": "Linux",
"versions": [
{
"status": "unknown",
"version": "consult Xen advisory XSA-441"
}
]
}
],
"configurations": [
{
"lang": "en",
"value": "All unprivileged guests running a Linux kernel of version 5.10 and later,\nor with the fixes for XSA-332, are vulnerable.\n\nAll guest types are vulnerable.\n\nOnly x86- and 64-bit Arm-guests are vulnerable.\n\nArm-guests running in 32-bit mode are not vulnerable.\n\nGuests not using paravirtualized drivers are not vulnerable.\n"
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "This issue was discovered as a bug by Marek Marczykowski-G\u00f3recki of\nInvisible Things Lab; the security impact was recognised by J\u00fcrgen\nGro\u00df of SUSE.\n"
}
],
"datePublic": "2023-10-10T11:26:00Z",
"descriptions": [
{
"lang": "en",
"value": "Closing of an event channel in the Linux kernel can result in a deadlock.\nThis happens when the close is being performed in parallel to an unrelated\nXen console action and the handling of a Xen console interrupt in an\nunprivileged guest.\n\nThe closing of an event channel is e.g. triggered by removal of a\nparavirtual device on the other side. As this action will cause console\nmessages to be issued on the other side quite often, the chance of\ntriggering the deadlock is not neglectable.\n\nNote that 32-bit Arm-guests are not affected, as the 32-bit Linux kernel\non Arm doesn\u0027t use queued-RW-locks, which are required to trigger the\nissue (on Arm32 a waiting writer doesn\u0027t block further readers to get\nthe lock).\n"
}
],
"impacts": [
{
"descriptions": [
{
"lang": "en",
"value": "A (malicious) guest administrator could cause a denial of service (DoS)\nin a backend domain (other than dom0) by disabling a paravirtualized\ndevice.\n\nA malicious backend could cause DoS in a guest running a Linux kernel by\ndisabling a paravirtualized device.\n"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-01-05T16:30:45.807Z",
"orgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
"shortName": "XEN"
},
"references": [
{
"url": "https://xenbits.xenproject.org/xsa/advisory-441.html"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html"
}
],
"title": "Possible deadlock in Linux kernel event handling",
"workarounds": [
{
"lang": "en",
"value": "There is no known mitigation.\n"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
"assignerShortName": "XEN",
"cveId": "CVE-2023-34324",
"datePublished": "2024-01-05T16:30:45.807Z",
"dateReserved": "2023-06-01T10:44:17.065Z",
"dateUpdated": "2024-08-02T16:10:06.472Z",
"state": "PUBLISHED"
},
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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.
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- 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.