{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-72474", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.934Z", "datePublished": "2026-08-15T05:57:15.073Z", "dateUpdated": "2026-08-17T05:15:23.275Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T05:15:23.275Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: dma-axi-dmac: use DMA pool to manange DMA descriptor\n\nFor architectures like Microblaze or arm64 (where this IP is used),\nDMA_DIRECT_REMAP is set which means that dma_alloc_coherent() might\nremap (and hence vmalloc()) some memory. This became visible in a design\nwhere dma_direct_use_pool() is not possible.\n\nWith the above, when calling dma_free_coherent(), vunmap() would be\ncalled from softirq context and thus leading to a BUG().\n\nTo fix it, use a dma pool that is allocated in\n.device_alloc_chan_resources() and allocate blocks from it. The key\npoint is that now dma_pool_free() is used in axi_dmac_free_desc() to\nfree the blocks and that just frees the blocks from the pool in the\nsense they can be used again. In other words, no actual call to\ndma_free_coherent() happens. That only happens when destroying the pool\nin axi_dmac_free_chan_resources() which does not happen in any interrupt\ncontext."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/dma/dma-axi-dmac.c"], "versions": [{"version": "3f8fd25936ee5f52596f10d420f650c5b5e3285f", "lessThan": "a4f41ceecfe68e117bae9c76c5ebc5e2b353fa56", "status": "affected", "versionType": "git"}, {"version": "3f8fd25936ee5f52596f10d420f650c5b5e3285f", "lessThan": "c0e6bb2b0408fcac6382158ee2bd9fdc45eceee9", "status": "affected", "versionType": "git"}, {"version": "3f8fd25936ee5f52596f10d420f650c5b5e3285f", "lessThan": "65e82fa24965b2eb6ad9412f6c530ed9a50a625f", "status": "affected", "versionType": "git"}, {"version": "3f8fd25936ee5f52596f10d420f650c5b5e3285f", "lessThan": "9e942c8579130e62734c14338e9f451780669164", "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/dma-axi-dmac.c"], "versions": [{"version": "6.8", "status": "affected"}, {"version": "0", "lessThan": "6.8", "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": "6.8", "versionEndExcluding": "6.12.97"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "6.18.40"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "7.1.5"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/a4f41ceecfe68e117bae9c76c5ebc5e2b353fa56"}, {"url": "https://git.kernel.org/stable/c/c0e6bb2b0408fcac6382158ee2bd9fdc45eceee9"}, {"url": "https://git.kernel.org/stable/c/65e82fa24965b2eb6ad9412f6c530ed9a50a625f"}, {"url": "https://git.kernel.org/stable/c/9e942c8579130e62734c14338e9f451780669164"}], "title": "dmaengine: dma-axi-dmac: use DMA pool to manange DMA descriptor", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/dma/dma-axi-dmac.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "a4f41ceecfe68e117bae9c76c5ebc5e2b353fa56", "status": "affected", "version": "3f8fd25936ee5f52596f10d420f650c5b5e3285f", "versionType": "git"}, {"lessThan": "c0e6bb2b0408fcac6382158ee2bd9fdc45eceee9", "status": "affected", "version": "3f8fd25936ee5f52596f10d420f650c5b5e3285f", "versionType": "git"}, {"lessThan": "65e82fa24965b2eb6ad9412f6c530ed9a50a625f", "status": "affected", "version": "3f8fd25936ee5f52596f10d420f650c5b5e3285f", "versionType": "git"}, {"lessThan": "9e942c8579130e62734c14338e9f451780669164", "status": "affected", "version": "3f8fd25936ee5f52596f10d420f650c5b5e3285f", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/dma/dma-axi-dmac.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.8"}, {"lessThan": "6.8", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.97", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.40", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.5", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: dma-axi-dmac: use DMA pool to manange DMA descriptor\n\nFor architectures like Microblaze or arm64 (where this IP is used),\nDMA_DIRECT_REMAP is set which means that dma_alloc_coherent() might\nremap (and hence vmalloc()) some memory. This became visible in a design\nwhere dma_direct_use_pool() is not possible.\n\nWith the above, when calling dma_free_coherent(), vunmap() would be\ncalled from softirq context and thus leading to a BUG().\n\nTo fix it, use a dma pool that is allocated in\n.device_alloc_chan_resources() and allocate blocks from it. The key\npoint is that now dma_pool_free() is used in axi_dmac_free_desc() to\nfree the blocks and that just frees the blocks from the pool in the\nsense they can be used again. In other words, no actual call to\ndma_free_coherent() happens. That only happens when destroying the pool\nin axi_dmac_free_chan_resources() which does not happen in any interrupt\ncontext."}], "id": "CVE-2026-72474", "lastModified": "2026-08-17T06:19:15.430", "metrics": {}, "published": "2026-08-15T06:22:21.563", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/65e82fa24965b2eb6ad9412f6c530ed9a50a625f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9e942c8579130e62734c14338e9f451780669164"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a4f41ceecfe68e117bae9c76c5ebc5e2b353fa56"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c0e6bb2b0408fcac6382158ee2bd9fdc45eceee9"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: dmaengine: dma-axi-dmac: use DMA pool to manange DMA descriptor", "id": "2516536", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2516536"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-663", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndmaengine: dma-axi-dmac: use DMA pool to manange DMA descriptor\nFor architectures like Microblaze or arm64 (where this IP is used),\nDMA_DIRECT_REMAP is set which means that dma_alloc_coherent() might\nremap (and hence vmalloc()) some memory. This became visible in a design\nwhere dma_direct_use_pool() is not possible.\nWith the above, when calling dma_free_coherent(), vunmap() would be\ncalled from softirq context and thus leading to a BUG().\nTo fix it, use a dma pool that is allocated in\n.device_alloc_chan_resources() and allocate blocks from it. The key\npoint is that now dma_pool_free() is used in axi_dmac_free_desc() to\nfree the blocks and that just frees the blocks from the pool in the\nsense they can be used again. In other words, no actual call to\ndma_free_coherent() happens. That only happens when destroying the pool\nin axi_dmac_free_chan_resources() which does not happen in any interrupt\ncontext.", "A flaw was found in the Linux kernel's dma-axi-dmac component. Under specific conditions on architectures like Microblaze or arm64, a memory management error can occur when the system attempts to free Direct Memory Access (DMA) coherent memory from a soft interrupt (softirq) context. This improper operation triggers a kernel bug, which can lead to a system crash and a Denial of Service (DoS)."], "name": "CVE-2026-72474", "public_date": "2026-08-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-72474\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-72474\nhttps://lore.kernel.org/linux-cve-announce/2026081535-CVE-2026-72474-44b6@gregkh/T"], "threat_severity": "Moderate"}