{"api_version":"1","generated_at":"2026-10-24T07:27:48+00:00","cve":"CVE-2026-99062","urls":{"html":"https://cve.report/CVE-2026-99062","api":"https://cve.report/api/cve/CVE-2026-99062.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-99062","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-99062"},"summary":{"title":"vsock/virtio: account only unread bytes in read_skb()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nvsock/virtio: account only unread bytes in read_skb()\n\nAfter a partial stream receive, rx_bytes tracks the unread suffix while\nbuf_used and peer credit still cover the whole packet.\nvirtio_transport_read_skb() dequeues that packet but passes pkt_len for\nboth counters, underflowing rx_bytes.\n\nOn a connected CID_LOCAL stream with an SK_SKB verdict, a 40-byte read\nfrom a 100-byte packet made SIOCINQ report -40, an empty recv return\nELOOP, and poll report the empty socket readable.  After verdict detach,\nreceiving 40 bytes wrapped the counter to zero and hid those queued bytes\nuntil one more byte arrived.  The fixed run kept the counter balanced\nand exposed all queued data immediately.\n\nThis was found during an LLM-assisted manual source audit of VSOCK\nreceive accounting while re-evaluating virtio_transport_read_skb() after\nCVE-2024-50169.\n\nSubtract only skb->len minus the VSOCK offset from rx_bytes.  Retain the\nfull packet length for buf_used and peer credit.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-23 13:17:30","updated_at":"2026-10-23 13:17:30"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/a463f55c791b96cfd12df8b10ea737d45c80bb18","name":"https://git.kernel.org/stable/c/a463f55c791b96cfd12df8b10ea737d45c80bb18","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e4a0028b0d54b2c45e1dc8c0dd95fe3e9236f55b","name":"https://git.kernel.org/stable/c/e4a0028b0d54b2c45e1dc8c0dd95fe3e9236f55b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/38bad3930b1185dd6c98db3dd342ddc123c6f3ef","name":"https://git.kernel.org/stable/c/38bad3930b1185dd6c98db3dd342ddc123c6f3ef","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/dd4b2f88ee517f9629d0d3dbfced02ffbc33e2dc","name":"https://git.kernel.org/stable/c/dd4b2f88ee517f9629d0d3dbfced02ffbc33e2dc","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-99062","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-99062","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 7893a41deaf28b53036d4ea7cd9f7d54e8874dfc e4a0028b0d54b2c45e1dc8c0dd95fe3e9236f55b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 45ca7e9f0730ae36fc610e675b990e9cc9ca0714 38bad3930b1185dd6c98db3dd342ddc123c6f3ef git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 45ca7e9f0730ae36fc610e675b990e9cc9ca0714 dd4b2f88ee517f9629d0d3dbfced02ffbc33e2dc git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 45ca7e9f0730ae36fc610e675b990e9cc9ca0714 a463f55c791b96cfd12df8b10ea737d45c80bb18 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 17bada47e9ac3621c28e0ffa89af8279fedea00a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.12.34 6.12.113 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.15.3 6.16 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.16","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.16 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.113 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.57 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.11 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/vmw_vsock/virtio_transport_common.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"e4a0028b0d54b2c45e1dc8c0dd95fe3e9236f55b","status":"affected","version":"7893a41deaf28b53036d4ea7cd9f7d54e8874dfc","versionType":"git"},{"lessThan":"38bad3930b1185dd6c98db3dd342ddc123c6f3ef","status":"affected","version":"45ca7e9f0730ae36fc610e675b990e9cc9ca0714","versionType":"git"},{"lessThan":"dd4b2f88ee517f9629d0d3dbfced02ffbc33e2dc","status":"affected","version":"45ca7e9f0730ae36fc610e675b990e9cc9ca0714","versionType":"git"},{"lessThan":"a463f55c791b96cfd12df8b10ea737d45c80bb18","status":"affected","version":"45ca7e9f0730ae36fc610e675b990e9cc9ca0714","versionType":"git"},{"status":"affected","version":"17bada47e9ac3621c28e0ffa89af8279fedea00a","versionType":"git"},{"lessThan":"6.12.113","status":"affected","version":"6.12.34","versionType":"semver"},{"lessThan":"6.16","status":"affected","version":"6.15.3","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/vmw_vsock/virtio_transport_common.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.16"},{"lessThan":"6.16","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.113","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.57","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.11","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.113","versionStartIncluding":"6.12.34","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.57","versionStartIncluding":"6.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.11","versionStartIncluding":"6.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3","versionStartIncluding":"6.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15.3","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nvsock/virtio: account only unread bytes in read_skb()\n\nAfter a partial stream receive, rx_bytes tracks the unread suffix while\nbuf_used and peer credit still cover the whole packet.\nvirtio_transport_read_skb() dequeues that packet but passes pkt_len for\nboth counters, underflowing rx_bytes.\n\nOn a connected CID_LOCAL stream with an SK_SKB verdict, a 40-byte read\nfrom a 100-byte packet made SIOCINQ report -40, an empty recv return\nELOOP, and poll report the empty socket readable.  After verdict detach,\nreceiving 40 bytes wrapped the counter to zero and hid those queued bytes\nuntil one more byte arrived.  The fixed run kept the counter balanced\nand exposed all queued data immediately.\n\nThis was found during an LLM-assisted manual source audit of VSOCK\nreceive accounting while re-evaluating virtio_transport_read_skb() after\nCVE-2024-50169.\n\nSubtract only skb->len minus the VSOCK offset from rx_bytes.  Retain the\nfull packet length for buf_used and peer credit."}],"providerMetadata":{"dateUpdated":"2026-10-23T12:23:03.360Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/e4a0028b0d54b2c45e1dc8c0dd95fe3e9236f55b"},{"url":"https://git.kernel.org/stable/c/38bad3930b1185dd6c98db3dd342ddc123c6f3ef"},{"url":"https://git.kernel.org/stable/c/dd4b2f88ee517f9629d0d3dbfced02ffbc33e2dc"},{"url":"https://git.kernel.org/stable/c/a463f55c791b96cfd12df8b10ea737d45c80bb18"}],"title":"vsock/virtio: account only unread bytes in read_skb()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-99062","datePublished":"2026-10-23T12:23:03.360Z","dateReserved":"2026-09-25T10:25:14.388Z","dateUpdated":"2026-10-23T12:23:03.360Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-23 13:17:30","lastModifiedDate":"2026-10-23 13:17:30","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"99062","Ordinal":"1","Title":"vsock/virtio: account only unread bytes in read_skb()","CVE":"CVE-2026-99062","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"99062","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nvsock/virtio: account only unread bytes in read_skb()\n\nAfter a partial stream receive, rx_bytes tracks the unread suffix while\nbuf_used and peer credit still cover the whole packet.\nvirtio_transport_read_skb() dequeues that packet but passes pkt_len for\nboth counters, underflowing rx_bytes.\n\nOn a connected CID_LOCAL stream with an SK_SKB verdict, a 40-byte read\nfrom a 100-byte packet made SIOCINQ report -40, an empty recv return\nELOOP, and poll report the empty socket readable.  After verdict detach,\nreceiving 40 bytes wrapped the counter to zero and hid those queued bytes\nuntil one more byte arrived.  The fixed run kept the counter balanced\nand exposed all queued data immediately.\n\nThis was found during an LLM-assisted manual source audit of VSOCK\nreceive accounting while re-evaluating virtio_transport_read_skb() after\nCVE-2024-50169.\n\nSubtract only skb->len minus the VSOCK offset from rx_bytes.  Retain the\nfull packet length for buf_used and peer credit.","Type":"Description","Title":"vsock/virtio: account only unread bytes in read_skb()"}]}}}