138 lines
7.7 KiB
JSON
138 lines
7.7 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-2025-38287",
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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": "2025-04-16T04:51:24.000Z",
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"datePublished": "2025-07-10T07:42:04.056Z",
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"dateUpdated": "2026-08-05T12:00:59.136Z"
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},
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T12:00:59.136Z"
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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\nIB/cm: Drop lockdep assert and WARN when freeing old msg\n\nThe send completion handler can run after cm_id has advanced to another\nmessage. The cm_id lock is not needed in this case, but a recent change\nre-used cm_free_priv_msg(), which asserts that the lock is held and\nWARNs if the cm_id's currently outstanding msg is different than the one\nbeing freed."
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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:N/I:N/A:H",
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"baseScore": 7.5,
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"baseSeverity": "HIGH"
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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 vulnerable path is entered from `cm_send_handler()`, driven by CM MADs received from a remote RDMA peer (RTU/REP/REJ/DREQ/DREP cancel the outstanding private MAD), against in-kernel RDMA listeners such as nvmet-rdma, nfsd/RDMA or SMB Direct. Under RoCEv2 these CM MADs are carried in IP-routable UDP/4791 traffic, so the attacker need not share an L2 segment.\nAC:L - The attacker controls both halves of the race — the `ib_cancel_mad()` that defers the flush completion (by sending RTU/DREP/REJ) and the subsequent private-MAD allocation (by forcing a disconnect/DREQ) — and can open many parallel connections to saturate the MAD workqueue and retry indefinitely until the ordering inverts.\nPR:N - IB CM connection establishment (REQ/REP/RTU/DREQ) completes entirely before any ULP-level authentication such as NVMe-oF or SMB, so an unauthenticated peer on the fabric can drive the victim cm_id through the required state transitions.\nUI:N - The state transitions are performed by the kernel CM state machine in response to attacker-supplied MADs and workqueue-deferred send completions; no action by any local user is required.\nS:U - The WARN and lockdep assert fire inside the kernel's own IB CM code and affect only the kernel's security authority; no VM, IOMMU or sandbox boundary is crossed.\nC:N - The buggy path frees the message identically to the fixed path — no out-of-bounds read, no use-after-free, no uninitialized data exposure. The WARN backtrace goes only to dmesg with hashed pointers, which the triggering remote attacker cannot observe.\nI:N - The `WARN_ON()` guard suppresses the erroneous `cm_id_priv->msg = NULL` store, and the AH destroy, cm_id deref and MAD free are all correct, so no kernel state or memory is corrupted.\nA:H - Each occurrence emits a `WARN_ON()` splat (plus a lockdep splat on PROVE_LOCKING kernels) that taints the kernel and is a full panic on the many hardened deployments running `panic_on_warn=1`; the attacker can trigger it repeatedly at will."
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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/infiniband/core/cm.c"
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],
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"versions": [
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{
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"version": "1e5159219076ddb2e44338c667c83fd1bd43dfef",
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"lessThan": "fc096a0cd2017cb0aa1e7fb83131410af9283910",
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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": "1e5159219076ddb2e44338c667c83fd1bd43dfef",
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"lessThan": "7590649ee7af381a9d1153143026dec124c5798e",
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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/infiniband/core/cm.c"
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],
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"versions": [
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{
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"version": "6.13",
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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": "6.13",
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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": "6.15.3",
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"lessThanOrEqual": "6.15.*",
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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": "6.16",
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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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"versionStartIncluding": "6.13",
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"versionEndExcluding": "6.15.3"
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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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]
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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/fc096a0cd2017cb0aa1e7fb83131410af9283910"
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},
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{
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"url": "https://git.kernel.org/stable/c/7590649ee7af381a9d1153143026dec124c5798e"
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}
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],
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"title": "IB/cm: Drop lockdep assert and WARN when freeing old msg",
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