{
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    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2024-27066",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-02-19T14:20:24.216Z",
        "datePublished": "2024-05-01T13:04:12.582Z",
        "dateUpdated": "2024-08-02T00:27:57.845Z"
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                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvirtio: packed: fix unmap leak for indirect desc table\n\nWhen use_dma_api and premapped are true, then the do_unmap is false.\n\nBecause the do_unmap is false, vring_unmap_extra_packed is not called by\ndetach_buf_packed.\n\n  if (unlikely(vq->do_unmap)) {\n                curr = id;\n                for (i = 0; i < state->num; i++) {\n                        vring_unmap_extra_packed(vq,\n                                                 &vq->packed.desc_extra[curr]);\n                        curr = vq->packed.desc_extra[curr].next;\n                }\n  }\n\nSo the indirect desc table is not unmapped. This causes the unmap leak.\n\nSo here, we check vq->use_dma_api instead. Synchronously, dma info is\nupdated based on use_dma_api judgment\n\nThis bug does not occur, because no driver use the premapped with\nindirect."
                }
            ],
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                    "product": "Linux",
                    "vendor": "Linux",
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                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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                            "version": "6.8.2",
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                            "version": "6.9",
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                    "url": "https://git.kernel.org/stable/c/e142169aca5546ae6619c39a575cda8105362100"
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                {
                    "url": "https://git.kernel.org/stable/c/d5c0ed17fea60cca9bc3bf1278b49ba79242bbcd"
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            "title": "virtio: packed: fix unmap leak for indirect desc table",
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