310 lines
17 KiB
JSON
310 lines
17 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-2026-72014",
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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": "2026-08-09T03:40:39.899Z",
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"datePublished": "2026-08-15T05:51:42.741Z",
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"dateUpdated": "2026-10-19T21:09:12.925Z"
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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": "2026-08-17T05:39:26.031Z"
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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\ndrbd: reject data replies with an out-of-range payload size\n\nrecv_dless_read() receives a P_DATA_REPLY from a peer into the bio of an\noutstanding read request. The peer-supplied payload length reaches it as\nthe signed int data_size, and two peer-controlled inputs can make it\nnegative. With a negotiated data-integrity-alg the digest length is\nsubtracted first, so a reply whose payload is smaller than the digest\nunderflows data_size. With no integrity algorithm (the default) data_size\nis assigned from the unsigned h95/h100 wire length and drbdd() never\nbounds it for a payload-carrying command, so a length above INT_MAX casts\nit negative; this path needs no non-default feature. The bio receive loop\nthen computes expect = min_t(int, data_size, bv_len), which is negative,\nand drbd_recv_all_warn(mapped, expect) receives with a size_t of SIZE_MAX\ninto the first mapped page.\n\nThe sibling receive path read_in_block() is not affected: it uses an\nunsigned size and rejects it against DRBD_MAX_BIO_SIZE before receiving.\nReject a data reply whose size is negative after the optional digest\nsubtraction, covering both triggers.\n\nImpact: a malicious or man-in-the-middle DRBD peer copies attacker-chosen\nbytes past a bio page in the receiver, corrupting kernel memory. A node\nthat reads from its peer (a diskless node, or read-balancing to the peer)\nis exposed in the default configuration; data-integrity-alg is not\nrequired."
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}
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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 - Exploitation is delivered over the DRBD replication TCP protocol when a victim node receives a malicious P_DATA_REPLY from its peer or a man-in-the-middle on that link; recv_dless_read() is reached from drbdd() without any local syscall or ioctl on the victim.\nAC:L - The peer fully controls the wire length in the P_DATA_REPLY header, and two independent triggers (unsigned-to-signed overflow or digest subtraction underflow) deterministically force expect negative so drbd_recv_all_warn() receives SIZE_MAX bytes whenever the victim issues a remote read.\nPR:N - No account, capability, or administrative access on the victim host is required; a malicious DRBD peer or network man-in-the-middle on the replication link can send the crafted reply after connection setup, and cram-hmac-alg peer authentication is optional.\nUI:N - No end-user action is needed because diskless-primary and read-balancing configurations automatically send P_DATA_REQUEST packets to the peer, and the malicious P_DATA_REPLY is processed in the kernel receiver thread during normal I/O.\nS:U - The out-of-bounds socket receive corrupts kernel memory on the same host that runs DRBD; successful exploitation yields kernel compromise on that node but does not by itself cross a VM, container, or IOMMU security boundary.\nC:H - Receiving up to SIZE_MAX attacker-controlled bytes past the mapped bio page is an out-of-bounds kernel write that can corrupt adjacent heap or page data and be leveraged for arbitrary kernel memory disclosure, not merely a bounded leak.\nI:H - The bug copies attacker-chosen network data beyond the allocated bio buffer boundary, providing a kernel out-of-bounds write primitive that can corrupt kernel structures and enable arbitrary code execution or privilege escalation.\nA:H - Writing gigabytes past a bio page can immediately corrupt critical kernel memory and cause oops or panic, and repeated malicious replies can keep the node unavailable even before full exploitation."
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}
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]
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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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"drivers/block/drbd/drbd_receiver.c"
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],
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"versions": [
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{
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"version": "b411b3637fa71fce9cf2acf0639009500f5892fe",
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"lessThan": "bca33f5442c3094511719d9db792ce3165d87e76",
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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": "b411b3637fa71fce9cf2acf0639009500f5892fe",
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"lessThan": "741a682535deffe9ab7e5c89caf83571efbc9dd9",
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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": "b411b3637fa71fce9cf2acf0639009500f5892fe",
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"lessThan": "f14e87d7b166490bceb9603b39310e51595d05b9",
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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": "b411b3637fa71fce9cf2acf0639009500f5892fe",
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"lessThan": "f16866c62656865854106b79bcf6e4ca97a51a92",
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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": "b411b3637fa71fce9cf2acf0639009500f5892fe",
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"lessThan": "5f59a8142000f0b8f75c432209ead73c424a745d",
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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": "b411b3637fa71fce9cf2acf0639009500f5892fe",
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"lessThan": "38cc4867540ae8beedfe41a1a1a6ed37052c77d6",
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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": "b411b3637fa71fce9cf2acf0639009500f5892fe",
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"lessThan": "648d4317326e6aa3f8c05cbf0fd14cc2eba6ca99",
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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": "b411b3637fa71fce9cf2acf0639009500f5892fe",
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"lessThan": "bd910a7660d280595ef94cb6d193951d855d330f",
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"status": "affected",
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"versionType": "git"
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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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"drivers/block/drbd/drbd_receiver.c"
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],
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"versions": [
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{
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"version": "2.6.33",
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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": "2.6.33",
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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": "5.10.261",
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"lessThanOrEqual": "5.10.*",
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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": "5.15.212",
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"lessThanOrEqual": "5.15.*",
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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": "6.1.178",
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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": "6.6.145",
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"lessThanOrEqual": "6.6.*",
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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": "6.12.97",
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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": "6.18.40",
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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": "7.1.5",
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"lessThanOrEqual": "7.1.*",
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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": "7.2",
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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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}
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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": "2.6.33",
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"versionEndExcluding": "5.10.261"
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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/bca33f5442c3094511719d9db792ce3165d87e76"
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},
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{
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"url": "https://git.kernel.org/stable/c/741a682535deffe9ab7e5c89caf83571efbc9dd9"
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},
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{
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"url": "https://git.kernel.org/stable/c/f14e87d7b166490bceb9603b39310e51595d05b9"
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},
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{
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"url": "https://git.kernel.org/stable/c/f16866c62656865854106b79bcf6e4ca97a51a92"
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},
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{
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"url": "https://git.kernel.org/stable/c/5f59a8142000f0b8f75c432209ead73c424a745d"
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},
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{
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"url": "https://git.kernel.org/stable/c/38cc4867540ae8beedfe41a1a1a6ed37052c77d6"
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},
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{
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"url": "https://git.kernel.org/stable/c/648d4317326e6aa3f8c05cbf0fd14cc2eba6ca99"
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},
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{
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"url": "https://git.kernel.org/stable/c/bd910a7660d280595ef94cb6d193951d855d330f"
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}
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],
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"title": "drbd: reject data replies with an out-of-range payload size",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2026-72014",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "yes"
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},
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{
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"Technical Impact": "total"
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}
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],
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"version": "2.0.3",
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"timestamp": "2026-10-16T15:49:59.402934Z"
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}
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-190",
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"description": "CWE-190 Integer Overflow or Wraparound"
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}
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]
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-10-19T21:09:12.925Z"
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}
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}
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]
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}
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} |