194 lines
9.2 KiB
JSON
194 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-2021-47614",
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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": "2024-06-19T14:55:32.795Z",
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"datePublished": "2024-06-19T14:58:02.467Z",
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"dateUpdated": "2026-08-05T08:48:38.472Z"
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},
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"dateUpdated": "2026-08-05T08:48:38.472Z"
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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\nRDMA/irdma: Fix a user-after-free in add_pble_prm\n\nWhen irdma_hmc_sd_one fails, 'chunk' is freed while its still on the PBLE\ninfo list.\n\nAdd the chunk entry to the PBLE info list only after successful setting of\nthe SD in irdma_hmc_sd_one."
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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:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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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:L - The bug is reached through local RDMA verbs (reg_user_mr/alloc_mr → irdma_get_pble → add_pble_prm) via /dev/infiniband/uverbs*, not by parsing remote RDMA/iWARP packets.\nAC:L - An attacker can exhaust the PBLE pool with large MR registrations to force add_pble_prm, then induce irdma_hmc_sd_one failure via CQP request GFP_ATOMIC exhaustion or concurrent CQP load; once planted, subsequent get_pbles walks the freed chunk deterministically.\nPR:L - uverbs nodes default to mode 0666 and REG_MR/alloc_mr require no capability; InfiniBand verbs are intentionally usable by unprivileged processes once an irdma device is present.\nUI:N - The attacker opens uverbs and issues memory-registration verbs themselves; no separate victim action is required.\nS:U - Impact is host-kernel heap corruption / privilege escalation within the same OS security authority, with no VM escape, IOMMU bypass, or other cross-boundary effect.\nC:H - The freed irdma_chunk remains on pinfo.clist and is later used by irdma_prm_get_pbles (bitmapbuf/vaddr), yielding a classic slab UAF that enables arbitrary kernel memory disclosure.\nI:H - The same reclaimable chunk UAF (and destroy-path double-free) enables heap spraying and arbitrary write/control-flow hijack primitives consistent with UAF scoring guidance.\nA:H - Walking or freeing the dangling chunk list entry causes kernel oops/panic even without a full exploit, so availability impact is High."
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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/hw/irdma/pble.c"
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],
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"versions": [
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{
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"programFiles": [
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"drivers/infiniband/hw/irdma/pble.c"
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],
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"versions": [
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{
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"version": "5.14",
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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": "5.14",
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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": "5.15.10",
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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": "5.16",
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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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"url": "https://git.kernel.org/stable/c/11eebcf63e98fcf047a876a51d76afdabc3b8b9b"
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}
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"title": "RDMA/irdma: Fix a user-after-free in add_pble_prm",
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"content": {
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"id": "CVE-2021-47614",
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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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"Technical Impact": "partial"
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"version": "2.0.3",
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"timestamp": "2024-09-10T17:11:52.033975Z"
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"title": "CISA ADP Vulnrichment",
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