182 lines
9.2 KiB
JSON
182 lines
9.2 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-2026-64068",
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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": "2026-07-19T07:54:57.030Z",
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"datePublished": "2026-07-19T15:39:45.306Z",
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"dateUpdated": "2026-10-21T12:43:00.243Z"
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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": "2026-10-21T12:43:00.243Z"
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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\nnetfs: Fix missing locking around retry adding new subreqs\n\nFix netfs_retry_read_subrequests() and netfs_retry_write_stream() to take\nthe appropriate lock when adding extra subrequests into\nstream->subrequests."
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}
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 9.8,
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"baseSeverity": "CRITICAL"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:N - The bug is in netfs client retry logic reached when CIFS, Ceph, AFS, or fscache-backed NFS processes I/O responses from a remote server; a malicious or MITM server can trigger retries and race the collector via crafted protocol replies.\nAC:L - An attacker controlling the remote server can force NEED_RETRY conditions and time fast completions during subrequest splitting; they control both sides of the race by sending concurrent responses while the client retries.\nPR:N - Exploitation requires no privileges on the victim host; a remote attacker only needs the client to have an active mount and any process to perform normal reads or writes against it.\nUI:N - No victim interaction beyond routine filesystem access on an already-mounted share; readahead, writeback, and daemon I/O can trigger the race without deliberate user action.\nS:U - Impact is kernel memory corruption and potential privilege escalation within the kernel; it does not cross a VM, container, or IOMMU security boundary.\nC:H - Concurrent unsynchronized list manipulation of refcounted subrequest objects can cause use-after-free, enabling arbitrary kernel memory disclosure.\nI:H - List corruption and use-after-free on heap-allocated subrequests can be leveraged for arbitrary kernel writes and control-flow hijacking.\nA:H - The race can corrupt the subrequest list and trigger kernel oops, panic, or use-after-free crashes during normal network filesystem I/O retries."
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}
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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": "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/netfs/read_retry.c",
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"fs/netfs/write_retry.c"
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],
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"versions": [
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{
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"lessThan": "f59c4ec86ef3a9ac99706ae163a38ec28129fd76",
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"status": "affected",
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"status": "affected",
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"lessThan": "cce18c263e9623872327ba3c956012f73c1179cc",
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"status": "affected",
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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/netfs/read_retry.c",
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"fs/netfs/write_retry.c"
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],
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"versions": [
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{
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"version": "6.10",
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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": "6.10",
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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": "6.12.114",
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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": "6.18.50",
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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": "7.0.11",
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"lessThanOrEqual": "7.0.*",
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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": "7.1",
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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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"cpeApplicability": [
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "6.10",
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"versionEndExcluding": "6.12.114"
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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/f59c4ec86ef3a9ac99706ae163a38ec28129fd76"
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},
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{
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"url": "https://git.kernel.org/stable/c/d5c9d19b0ff2f7153532ac238a5e96fed2df315c"
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},
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{
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"url": "https://git.kernel.org/stable/c/393f3f0d7353a94b1e0bc4ca89c683fe983e5fd2"
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},
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{
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"url": "https://git.kernel.org/stable/c/cce18c263e9623872327ba3c956012f73c1179cc"
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}
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],
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"title": "netfs: Fix missing locking around retry adding new subreqs",
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