173 lines
8.7 KiB
JSON
173 lines
8.7 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-23189",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-01-13T15:37:45.985Z",
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"datePublished": "2026-02-14T16:27:17.549Z",
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"dateUpdated": "2026-05-23T16:04:05.037Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-05-23T16:04:05.037Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nceph: fix NULL pointer dereference in ceph_mds_auth_match()\n\nThe CephFS kernel client has regression starting from 6.18-rc1.\nWe have issue in ceph_mds_auth_match() if fs_name == NULL:\n\n const char fs_name = mdsc->fsc->mount_options->mds_namespace;\n ...\n if (auth->match.fs_name && strcmp(auth->match.fs_name, fs_name)) {\n / fsname mismatch, try next one */\n return 0;\n }\n\nPatrick Donnelly suggested that: In summary, we should definitely start\ndecoding `fs_name` from the MDSMap and do strict authorizations checks\nagainst it. Note that the `-o mds_namespace=foo` should only be used for\nselecting the file system to mount and nothing else. It's possible\nno mds_namespace is specified but the kernel will mount the only\nfile system that exists which may have name \"foo\".\n\nThis patch reworks ceph_mdsmap_decode() and namespace_equals() with\nthe goal of supporting the suggested concept. Now struct ceph_mdsmap\ncontains m_fs_name field that receives copy of extracted FS name\nby ceph_extract_encoded_string(). For the case of \"old\" CephFS file\nsystems, it is used \"cephfs\" name.\n\n[ idryomov: replace redundant %*pE with %s in ceph_mdsmap_decode(),\n get rid of a series of strlen() calls in ceph_namespace_match(),\n drop changes to namespace_equals() body to avoid treating empty\n mds_namespace as equal, drop changes to ceph_mdsc_handle_fsmap()\n as namespace_equals() isn't an equivalent substitution there ]"
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"fs/ceph/mds_client.c",
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"fs/ceph/mdsmap.c",
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"fs/ceph/mdsmap.h",
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"fs/ceph/super.h",
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"include/linux/ceph/ceph_fs.h"
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],
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"versions": [
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{
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"version": "07640d34a781bb2e39020a39137073c03c4aa932",
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"lessThan": "c6f8326f26bd20d648d9a55afd68148d1b6afe28",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "22c73d52a6d05c5a2053385c0d6cd9984732799d",
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"lessThan": "57b36ffc8881dd455d875f85c105901974af2130",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "22c73d52a6d05c5a2053385c0d6cd9984732799d",
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"lessThan": "7987cce375ac8ce98e170a77aa2399f2cf6eb99f",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "ca3da8b27ab9a0923ad477447cfb8fc7f4b4c523",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "6.12.58",
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"lessThan": "6.12.70",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "6.17.8",
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"lessThan": "6.18",
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"status": "affected",
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"versionType": "semver"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"fs/ceph/mds_client.c",
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"fs/ceph/mdsmap.c",
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"fs/ceph/mdsmap.h",
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"fs/ceph/super.h",
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"include/linux/ceph/ceph_fs.h"
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],
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"versions": [
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{
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"version": "6.18",
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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": "6.18",
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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": "6.12.70",
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"lessThanOrEqual": "6.12.*",
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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": "6.18.10",
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"lessThanOrEqual": "6.18.*",
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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": "6.19",
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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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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.12.58",
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"versionEndExcluding": "6.12.70"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.18",
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"versionEndExcluding": "6.18.10"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.18",
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"versionEndExcluding": "6.19"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.17.8"
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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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{
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"url": "https://git.kernel.org/stable/c/c6f8326f26bd20d648d9a55afd68148d1b6afe28"
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},
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{
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"url": "https://git.kernel.org/stable/c/57b36ffc8881dd455d875f85c105901974af2130"
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},
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{
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"url": "https://git.kernel.org/stable/c/7987cce375ac8ce98e170a77aa2399f2cf6eb99f"
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}
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],
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"title": "ceph: fix NULL pointer dereference in ceph_mds_auth_match()",
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"x_generator": {
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"engine": "bippy-1.2.0"
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} |