{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-72148", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.908Z", "datePublished": "2026-08-15T05:53:19.921Z", "dateUpdated": "2026-08-23T12:46:52.752Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-23T12:46:52.752Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: dw-edma: Add spinlock to protect DONE_INT_MASK and ABORT_INT_MASK\n\nThe DONE_INT_MASK and ABORT_INT_MASK registers are shared by all DMA\nchannels, and modifying them requires a read-modify-write sequence.\nBecause this operation is not atomic, concurrent calls to\ndw_edma_v0_core_start() can introduce race conditions if two channels\nupdate these registers simultaneously.\n\nAdd a spinlock to serialize access to these registers and prevent race\nconditions.\n\n[den: update dw_edma.lock comment]" } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H", "baseScore": 8.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:A - On PCIe endpoint SoCs (R-Car Gen4, DWC EP) the dw-edma v0 engine is driven when a physically connected PCIe root host initiates endpoint DMA (e.g. pci-epf-mhi); that host peer needs no network path to the victim, fitting Adjacent attack vector.\nAC:L - The race needs only two eDMA channels starting their first chunk concurrently; an attacker controls both sides by issuing parallel DMA requests or timing concurrent completions, with no luck-dependent layout or rare config.\nPR:N - In the highest-impact PCIe EP deployment a malicious or compromised upstream host triggers concurrent endpoint DMA through BAR/MHI traffic without any local Linux credentials, shell, or CAP_* on the vulnerable endpoint system.\nUI:N - Exploitation is fully automated once the attacker can submit concurrent DMA operations; no victim user action such as mounting filesystems or opening files is required.\nS:C - Corrupted shared DONE/ABORT masks and linked-list error enables on an endpoint can disrupt PCIe DMA to/from upstream host memory, impacting resources outside the endpoint kernel security authority across the PCIe boundary.\nC:L - Lost interrupt unmasking can leave host-visible DMA buffers partially updated or stall reads, enabling limited cross-boundary disclosure of in-flight or stale data rather than arbitrary kernel memory read primitives.\nI:L - Register corruption can disable linked-list error detection and desynchronize DMA completion handling, causing limited unintended modification of host or device DMA buffers even though addresses are normally driver-controlled.\nA:H - A lost DONE/ABORT unmask leaves channels permanently BUSY with completions never delivered, wedging dmaengine clients and endpoint services until reboot, constituting a severe availability failure." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/dma/dw-edma/dw-edma-core.h", "drivers/dma/dw-edma/dw-edma-v0-core.c" ], "versions": [ { "version": "7e4b8a4fbe2cecab0959e862604803d063f50029", "lessThan": "3989b4775bc2cdbdb4ddc4b1d2420a82b40913f2", "status": "affected", "versionType": "git" }, { "version": "7e4b8a4fbe2cecab0959e862604803d063f50029", "lessThan": "f60c7463d44fbc1585d247d0bd6976f7a1099472", "status": "affected", "versionType": "git" }, { "version": "7e4b8a4fbe2cecab0959e862604803d063f50029", "lessThan": "2247cc25a91fb1b5b86586ed55fdd5b725a7477c", "status": "affected", "versionType": "git" }, { "version": "7e4b8a4fbe2cecab0959e862604803d063f50029", "lessThan": "3ee0f478bb29b4ee892b178179a9a76ddd194149", "status": "affected", "versionType": "git" }, { "version": "7e4b8a4fbe2cecab0959e862604803d063f50029", "lessThan": "21a9834f56d6249aaa6ca7c2d8c182d66c48c3e1", "status": "affected", "versionType": "git" }, { "version": "7e4b8a4fbe2cecab0959e862604803d063f50029", "lessThan": "ddbc4a8a4fe296f1fa2e59f7d176fc7c773df640", "status": "affected", "versionType": "git" }, { "version": "7e4b8a4fbe2cecab0959e862604803d063f50029", "lessThan": "1553ca96e9df158d8f37137cf4bf5fb0dc981d94", "status": "affected", "versionType": "git" }, { "version": "7e4b8a4fbe2cecab0959e862604803d063f50029", "lessThan": "8ffba0171c6bbce5f093c6dba5a02c0805b31203", "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/dma/dw-edma/dw-edma-core.h", "drivers/dma/dw-edma/dw-edma-v0-core.c" ], "versions": [ { "version": "5.3", "status": "affected" }, { "version": "0", "lessThan": "5.3", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.266", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.217", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.178", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.145", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.97", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.40", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2", "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": "5.3", "versionEndExcluding": "5.10.266" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "5.15.217" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "6.1.178" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "6.6.145" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "6.12.97" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "6.18.40" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "7.1.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "7.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/3989b4775bc2cdbdb4ddc4b1d2420a82b40913f2" }, { "url": "https://git.kernel.org/stable/c/f60c7463d44fbc1585d247d0bd6976f7a1099472" }, { "url": "https://git.kernel.org/stable/c/2247cc25a91fb1b5b86586ed55fdd5b725a7477c" }, { "url": "https://git.kernel.org/stable/c/3ee0f478bb29b4ee892b178179a9a76ddd194149" }, { "url": "https://git.kernel.org/stable/c/21a9834f56d6249aaa6ca7c2d8c182d66c48c3e1" }, { "url": "https://git.kernel.org/stable/c/ddbc4a8a4fe296f1fa2e59f7d176fc7c773df640" }, { "url": "https://git.kernel.org/stable/c/1553ca96e9df158d8f37137cf4bf5fb0dc981d94" }, { "url": "https://git.kernel.org/stable/c/8ffba0171c6bbce5f093c6dba5a02c0805b31203" } ], "title": "dmaengine: dw-edma: Add spinlock to protect DONE_INT_MASK and ABORT_INT_MASK", "x_generator": { "engine": "bippy-1.2.0" } } } }