{"id":"CVE-2026-97990","revision":"1326c7588cbb4c70834f32f82f1d455e","records":[{"revision":"1326c7588cbb4c70834f32f82f1d455e","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-97990","aliases":[],"title":"vdpa_sim_net: check TX pull result before RX copy","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nvdpa_sim_net: check TX pull result before RX copy\n\nvringh_iov_pull_iotlb() returns a signed byte count.  A failed TX pull is\ncurrently added to the unsigned byte counter and then passed as a size_t\nlength to receive_filter() and vringh_iov_push_iotlb().  A negative error\ncan therefore become a large length in the RX path.\n\nHandle non-positive pull results before every length use.  Count the TX\nerror and complete the consumed TX descriptor with zero bytes.\n\nI found this bug myself, though the patch was written with AI assistance.","state":0,"publishedAt":"2026-09-25T10:23:23.226+00:00","modifiedAt":"2026-10-19T09:11:57.26+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/vdpa/vdpa_sim/vdpa_sim_net.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"cfe226892913a448e83e7a19db93862baa3cb99c\",\n                            \"lessThan\": \"1b803d382cde6d85755b363f22010208a04ba40a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"cfe226892913a448e83e7a19db93862baa3cb99c\",\n                            \"lessThan\": \"c001abcde865b74231da8f1412c3217dbf66781e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"cfe226892913a448e83e7a19db93862baa3cb99c\",\n                            \"lessThan\": \"3af20238a09ca180d66623e3bed16b64e9975f39\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"cfe226892913a448e83e7a19db93862baa3cb99c\",\n                            \"lessThan\": \"2bbf1c1f69991e28787e02b0a2f826289d5fc730\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"cfe226892913a448e83e7a19db93862baa3cb99c\",\n                            \"lessThan\": \"0d195797a80b77f2ec56718cd26d3ee65d0093e8\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/vdpa/vdpa_sim/vdpa_sim_net.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.19\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.19\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.158\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.111\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.53\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.7\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/1b803d382cde6d85755b363f22010208a04ba40a","https://git.kernel.org/stable/c/c001abcde865b74231da8f1412c3217dbf66781e","https://git.kernel.org/stable/c/3af20238a09ca180d66623e3bed16b64e9975f39","https://git.kernel.org/stable/c/2bbf1c1f69991e28787e02b0a2f826289d5fc730","https://git.kernel.org/stable/c/0d195797a80b77f2ec56718cd26d3ee65d0093e8"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-97990","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-97990","identifiers":["CVE-2026-97990"]},"retained":false,"historicalAffected":[]}],"coverage":[]}