mirror of
https://github.com/CVEProject/cvelist.git
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122 lines
6.6 KiB
JSON
122 lines
6.6 KiB
JSON
{
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"data_version": "4.0",
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"data_type": "CVE",
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"data_format": "MITRE",
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"CVE_data_meta": {
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"ID": "CVE-2023-52909",
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"ASSIGNER": "cve@kernel.org",
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"STATE": "PUBLIC"
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},
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"description": {
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"description_data": [
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{
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"lang": "eng",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: fix handling of cached open files in nfsd4_open codepath\n\nCommit fb70bf124b05 (\"NFSD: Instantiate a struct file when creating a\nregular NFSv4 file\") added the ability to cache an open fd over a\ncompound. There are a couple of problems with the way this currently\nworks:\n\nIt's racy, as a newly-created nfsd_file can end up with its PENDING bit\ncleared while the nf is hashed, and the nf_file pointer is still zeroed\nout. Other tasks can find it in this state and they expect to see a\nvalid nf_file, and can oops if nf_file is NULL.\n\nAlso, there is no guarantee that we'll end up creating a new nfsd_file\nif one is already in the hash. If an extant entry is in the hash with a\nvalid nf_file, nfs4_get_vfs_file will clobber its nf_file pointer with\nthe value of op_file and the old nf_file will leak.\n\nFix both issues by making a new nfsd_file_acquirei_opened variant that\ntakes an optional file pointer. If one is present when this is called,\nwe'll take a new reference to it instead of trying to open the file. If\nthe nfsd_file already has a valid nf_file, we'll just ignore the\noptional file and pass the nfsd_file back as-is.\n\nAlso rework the tracepoints a bit to allow for an \"opened\" variant and\ndon't try to avoid counting acquisitions in the case where we already\nhave a cached open file."
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}
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]
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},
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"problemtype": {
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"problemtype_data": [
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{
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"description": [
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{
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"lang": "eng",
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"value": "n/a"
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}
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]
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}
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]
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},
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"affects": {
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"vendor": {
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"vendor_data": [
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{
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"vendor_name": "Linux",
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"product": {
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"product_data": [
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{
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"product_name": "Linux",
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"version": {
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"version_data": [
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{
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"version_affected": "<",
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"version_name": "c20097329d2c",
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"version_value": "45c08a752982"
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},
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{
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"version_affected": "<",
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"version_name": "106331a12b0f",
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"version_value": "0b778361998d"
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},
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{
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"version_affected": "<",
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"version_name": "fb70bf124b05",
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"version_value": "973acfdfe90c"
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},
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{
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"version_value": "not down converted",
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"x_cve_json_5_version_data": {
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"versions": [
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{
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"version": "5.19",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "5.19",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.7",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.2",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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],
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"defaultStatus": "affected"
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}
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}
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]
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}
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}
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]
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}
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}
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]
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}
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},
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"references": {
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"reference_data": [
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{
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"url": "https://git.kernel.org/stable/c/45c08a752982116f3287afcd1bd9c50f4fab0c28",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/45c08a752982116f3287afcd1bd9c50f4fab0c28"
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},
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{
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"url": "https://git.kernel.org/stable/c/0b778361998d6c6356b8d2fc7ddf025fb3224654",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/0b778361998d6c6356b8d2fc7ddf025fb3224654"
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},
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{
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"url": "https://git.kernel.org/stable/c/973acfdfe90c8a4e58ade97ff0653a498531ff2e",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/973acfdfe90c8a4e58ade97ff0653a498531ff2e"
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},
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{
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"url": "https://git.kernel.org/stable/c/0b3a551fa58b4da941efeb209b3770868e2eddd7",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/0b3a551fa58b4da941efeb209b3770868e2eddd7"
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}
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]
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},
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"generator": {
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"engine": "bippy-9e1c9544281a"
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}
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} |