{"api_version":"1","generated_at":"2026-10-26T06:23:08+00:00","cve":"CVE-2026-98911","urls":{"html":"https://cve.report/CVE-2026-98911","api":"https://cve.report/api/cve/CVE-2026-98911.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98911","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98911"},"summary":{"title":"dpaa2-switch: fix the error path in dpaa2_switch_rx()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndpaa2-switch: fix the error path in dpaa2_switch_rx()\n\nIn case of an error in dpaa2_switch_rx(), the dpaa2_switch_free_fd()\nfunction is called in order to free the FD. This is incorrect since the\ndpaa2_switch_free_fd() is intended to be used on Tx frame descriptors,\nmeaning that it expects in the software annotation area of the FD data\nto find a valid skb pointer on which to call dev_kfree_skb().\n\nFix this by extracting the dma_unmap_page() from\ndpaa2_switch_build_linear_skb() directly into the dpaa2_switch_rx()\nfunction. This allows us to directly use free_pages() in case of an\nerror before an SKB was created and kfree_skb() afterwards.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-23 12:18:25","updated_at":"2026-10-24 14:16:48"},"problem_types":[],"metrics":[{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"7.5","severity":"HIGH","vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"ADJACENT_NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"7.5","severity":"HIGH","vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"baseScore":7.5,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/791068c962469af0090e1a1ee63657fb9eef40db","name":"https://git.kernel.org/stable/c/791068c962469af0090e1a1ee63657fb9eef40db","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/74c1c9f5c0c30bbd0c2cf87b6e3507e7ea46c13d","name":"https://git.kernel.org/stable/c/74c1c9f5c0c30bbd0c2cf87b6e3507e7ea46c13d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/259ad6093204b999d41e7e6d0ad90ef9a71a44ab","name":"https://git.kernel.org/stable/c/259ad6093204b999d41e7e6d0ad90ef9a71a44ab","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ee54f8d7e642c44cfcc2dcb390b4c50e145d81b8","name":"https://git.kernel.org/stable/c/ee54f8d7e642c44cfcc2dcb390b4c50e145d81b8","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f4ceb8e3d6d5becb4cda7a7098a8638e18c835a1","name":"https://git.kernel.org/stable/c/f4ceb8e3d6d5becb4cda7a7098a8638e18c835a1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/fa232b4496cb59503ae5108c756cbe10e59b0bc3","name":"https://git.kernel.org/stable/c/fa232b4496cb59503ae5108c756cbe10e59b0bc3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98911","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98911","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 791068c962469af0090e1a1ee63657fb9eef40db git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 ee54f8d7e642c44cfcc2dcb390b4c50e145d81b8 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 259ad6093204b999d41e7e6d0ad90ef9a71a44ab git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 f4ceb8e3d6d5becb4cda7a7098a8638e18c835a1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.158 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.111 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.53 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * 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":["drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"791068c962469af0090e1a1ee63657fb9eef40db","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"ee54f8d7e642c44cfcc2dcb390b4c50e145d81b8","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"259ad6093204b999d41e7e6d0ad90ef9a71a44ab","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"f4ceb8e3d6d5becb4cda7a7098a8638e18c835a1","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"fa232b4496cb59503ae5108c756cbe10e59b0bc3","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"74c1c9f5c0c30bbd0c2cf87b6e3507e7ea46c13d","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"5.15.222","status":"affected","version":"0","versionType":"semver"},{"lessThan":"6.1.189","status":"affected","version":"0","versionType":"semver"},{"lessThan":"6.6.158","status":"affected","version":"0","versionType":"semver"},{"lessThan":"6.12.111","status":"affected","version":"0","versionType":"semver"},{"lessThan":"6.18.53","status":"affected","version":"0","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.222","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.189","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.158","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.111","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.53","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.222","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.189","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.158","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.111","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.53","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndpaa2-switch: fix the error path in dpaa2_switch_rx()\n\nIn case of an error in dpaa2_switch_rx(), the dpaa2_switch_free_fd()\nfunction is called in order to free the FD. This is incorrect since the\ndpaa2_switch_free_fd() is intended to be used on Tx frame descriptors,\nmeaning that it expects in the software annotation area of the FD data\nto find a valid skb pointer on which to call dev_kfree_skb().\n\nFix this by extracting the dma_unmap_page() from\ndpaa2_switch_build_linear_skb() directly into the dpaa2_switch_rx()\nfunction. This allows us to directly use free_pages() in case of an\nerror before an SKB was created and kfree_skb() afterwards."}],"metrics":[{"cvssV3_1":{"baseScore":7.5,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"scenarios":[{"lang":"en","value":"AV:A - An adjacent Ethernet peer can send an oversized or malformed frame to the trapped STP address 01:80:c2:00:00:00; dpaa2_switch_port_trap_mac_addr() redirects it through dpaa2_switch_poll() and dpaa2_switch_store_consume() to dpaa2_switch_rx().\nAC:H - The peer controls frame contents and length but not the resulting FD format directly; the bad cleanup requires a non-single FD under the target's frame-length and page-pool configuration, a surviving runt, allocation failure, or invalid hardware FLC metadata.\nPR:N - The default STP ACL trap accepts link-layer frames without authentication, and the DPIO callback and NAPI receive path perform no credential or capability check before calling dpaa2_switch_rx().\nUI:N - Once the switch port and control interface are operating, receipt of the peer's trapped frame schedules NAPI and invokes dpaa2_switch_rx() automatically, without any victim action.\nS:U - dpaa2_switch_rx() and the erroneous dpaa2_switch_free_fd() cleanup both execute within the host kernel and do not cross a VM, IOMMU, or other security-authority boundary.\nC:H - dpaa2_switch_free_fd() interprets an RX page's opaque software-annotation word as an skb pointer, and skb_tail_pointer() and skb teardown then follow fields through that unrelated address, permitting reads of unintended kernel objects.\nI:H - dev_kfree_skb() can decrement the bogus object's users field and release or free pointers obtained from it, allowing wrong-object refcount changes, invalid frees, and allocator corruption capable of control-flow compromise.\nA:H - The bogus skb pointer can fault immediately in skb_tail_pointer() or during dev_kfree_skb() teardown from the NAPI receive path, causing a kernel oops or panic."}]}],"providerMetadata":{"dateUpdated":"2026-10-24T14:09:31.202Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/791068c962469af0090e1a1ee63657fb9eef40db"},{"url":"https://git.kernel.org/stable/c/ee54f8d7e642c44cfcc2dcb390b4c50e145d81b8"},{"url":"https://git.kernel.org/stable/c/259ad6093204b999d41e7e6d0ad90ef9a71a44ab"},{"url":"https://git.kernel.org/stable/c/f4ceb8e3d6d5becb4cda7a7098a8638e18c835a1"},{"url":"https://git.kernel.org/stable/c/fa232b4496cb59503ae5108c756cbe10e59b0bc3"},{"url":"https://git.kernel.org/stable/c/74c1c9f5c0c30bbd0c2cf87b6e3507e7ea46c13d"}],"title":"dpaa2-switch: fix the error path in dpaa2_switch_rx()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98911","datePublished":"2026-10-23T11:54:57.029Z","dateReserved":"2026-09-25T10:25:14.379Z","dateUpdated":"2026-10-24T14:09:31.202Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-23 12:18:25","lastModifiedDate":"2026-10-24 14:16:48","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"ADJACENT_NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.6,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98911","Ordinal":"1","Title":"dpaa2-switch: fix the error path in dpaa2_switch_rx()","CVE":"CVE-2026-98911","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98911","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ndpaa2-switch: fix the error path in dpaa2_switch_rx()\n\nIn case of an error in dpaa2_switch_rx(), the dpaa2_switch_free_fd()\nfunction is called in order to free the FD. This is incorrect since the\ndpaa2_switch_free_fd() is intended to be used on Tx frame descriptors,\nmeaning that it expects in the software annotation area of the FD data\nto find a valid skb pointer on which to call dev_kfree_skb().\n\nFix this by extracting the dma_unmap_page() from\ndpaa2_switch_build_linear_skb() directly into the dpaa2_switch_rx()\nfunction. This allows us to directly use free_pages() in case of an\nerror before an SKB was created and kfree_skb() afterwards.","Type":"Description","Title":"dpaa2-switch: fix the error path in dpaa2_switch_rx()"}]}}}