{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-50384", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-09-17T14:53:06.997Z", "datePublished": "2025-09-18T13:33:05.759Z", "dateUpdated": "2026-08-05T08:58:29.333Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:58:29.333Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: vme_user: Fix possible UAF in tsi148_dma_list_add\n\nSmatch report warning as follows:\n\ndrivers/staging/vme_user/vme_tsi148.c:1757 tsi148_dma_list_add() warn:\n '&entry->list' not removed from list\n\nIn tsi148_dma_list_add(), the error path \"goto err_dma\" will not\nremove entry->list from list->entries, but entry will be freed,\nthen list traversal may cause UAF.\n\nFix by removeing it from list->entries before free()." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The UAF is in the TSI148 VME bridge DMA-list builder (`tsi148_dma_list_add`), reached only through the local VME DMA API (`vme_dma_list_add`) used by VME device drivers on systems with the PCI TSI148 bridge—not via network packets or physical attachment alone.\nAC:L - An attacker who can drive DMA-list add/free can induce a `dma_map_single` failure (IOVA/swiotlb exhaustion), leave the freed entry linked, then trigger UAF on the next add (`prev->descriptor` write), `tsi148_dma_list_exec`, or `tsi148_dma_list_empty`; no attacker-uncontrollable race is required.\nPR:L - The VME DMA path has no `capable()`/`CAP_*` gate—only whatever DAC the consuming driver/device node applies. On TSI148 industrial/DAQ deployments (the intended consumers of this EXPORT_SYMBOL API), a non-root service account with VME device access is a reasonable worst case, matching CVE-2026-64449 for this subsystem.\nUI:N - The attacker initiates the DMA-list operations that hit the err_dma path and subsequent list walk themselves; no separate victim action is required.\nS:U - This is a standard in-kernel heap UAF within the host VME bridge driver and does not cross a VM, IOMMU, or other security-authority boundary.\nC:H - Use-after-free of the linked `tsi148_dma_entry` lets an attacker reclaim the object and control contents read on later list traversal/exec, enabling arbitrary kernel memory disclosure per UAF guidance.\nI:H - The same dangling list entry is written via the next-add prev-link update, and `tsi148_dma_list_empty` can double-free/unmap with a garbage `dma_handle`, yielding heap corruption and control-flow hijack primitives.\nA:H - Any subsequent list walk of the freed entry (empty/exec/add) can oops/panic the kernel, so availability impact is High even without full exploitation." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/staging/vme_user/vme_tsi148.c" ], "versions": [ { "version": "b2383c90a9d691201b9aee557776694cde86a935", "lessThan": "5cc4eea715a3fcf4e516662f736dfee63979465f", "status": "affected", "versionType": "git" }, { "version": "b2383c90a9d691201b9aee557776694cde86a935", "lessThan": "51c0ad3b7c5b01f9314758335a13f157b05fa56d", "status": "affected", "versionType": "git" }, { "version": "b2383c90a9d691201b9aee557776694cde86a935", "lessThan": "e6b0adff99edf246ba1f8d464530a0438cb1cbda", "status": "affected", "versionType": "git" }, { "version": "b2383c90a9d691201b9aee557776694cde86a935", "lessThan": "a45ba33d398a821147d7e5f16ead7eb125e331e2", "status": "affected", "versionType": "git" }, { "version": "b2383c90a9d691201b9aee557776694cde86a935", "lessThan": "5d2b286eb034af114f67d9967fc3fbc1829bb712", "status": "affected", "versionType": "git" }, { "version": "b2383c90a9d691201b9aee557776694cde86a935", "lessThan": "1f5661388f43df3ac106ce93e67d8d22b16a78ff", "status": "affected", "versionType": "git" }, { "version": "b2383c90a9d691201b9aee557776694cde86a935", "lessThan": "cf138759a7e92c75cfc1b7ba705e4108fe330edf", "status": "affected", "versionType": "git" }, { "version": "b2383c90a9d691201b9aee557776694cde86a935", "lessThan": "85db68fc901da52314ded80aace99f8b684c7815", "status": "affected", "versionType": "git" }, { "version": "b2383c90a9d691201b9aee557776694cde86a935", "lessThan": "357057ee55d3c99a5de5abe8150f7bca04f8e53b", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/staging/vme_user/vme_tsi148.c" ], "versions": [ { "version": "4.2", "status": "affected" }, { "version": "0", "lessThan": "4.2", "status": "unaffected", "versionType": "semver" }, { "version": "4.9.337", "lessThanOrEqual": "4.9.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.14.303", "lessThanOrEqual": "4.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "4.19.270", "lessThanOrEqual": "4.19.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.229", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.163", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.86", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.0.16", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.2", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "4.9.337" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "4.14.303" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "4.19.270" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "5.4.229" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "5.10.163" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "5.15.86" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "6.0.16" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "6.1.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.2", "versionEndExcluding": "6.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/5cc4eea715a3fcf4e516662f736dfee63979465f" }, { "url": "https://git.kernel.org/stable/c/51c0ad3b7c5b01f9314758335a13f157b05fa56d" }, { "url": "https://git.kernel.org/stable/c/e6b0adff99edf246ba1f8d464530a0438cb1cbda" }, { "url": "https://git.kernel.org/stable/c/a45ba33d398a821147d7e5f16ead7eb125e331e2" }, { "url": "https://git.kernel.org/stable/c/5d2b286eb034af114f67d9967fc3fbc1829bb712" }, { "url": "https://git.kernel.org/stable/c/1f5661388f43df3ac106ce93e67d8d22b16a78ff" }, { "url": "https://git.kernel.org/stable/c/cf138759a7e92c75cfc1b7ba705e4108fe330edf" }, { "url": "https://git.kernel.org/stable/c/85db68fc901da52314ded80aace99f8b684c7815" }, { "url": "https://git.kernel.org/stable/c/357057ee55d3c99a5de5abe8150f7bca04f8e53b" } ], "title": "staging: vme_user: Fix possible UAF in tsi148_dma_list_add", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "id": "CVE-2022-50384", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2026-01-14T18:48:36.418605Z" } } } ], "problemTypes": [ { "descriptions": [ { "lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416 Use After Free" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-14T18:53:04.397Z" } } ] } }