CVE-2026-90086

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-90086", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.785Z", "datePublished": "2026-09-17T16:06:02.212Z", "dateUpdated": "2026-10-21T12:49:45.759Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-21T12:49:45.759Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxsk: honor XDP_TX_METADATA in zero-copy path\n\nThe zero-copy path reads TX metadata whenever the UMEM has metadata space,\neven if the descriptor does not set XDP_TX_METADATA. Pass descriptor\noptions through the metadata helpers and ignore metadata unless the option\nis set.\n\nThis does not fix the existing per-WQE metadata handling for mlx5 MPWQEs.\nOnly the descriptor that starts a session passes through\nxsk_tx_metadata_request() and configures offload state shared by the batch.\nMetadata on descriptors joining an open session is therefore not validated\nand does not configure its requested offloads. In addition, a non-NULL\nmetadata pointer from such a descriptor is treated as a timestamp\ncompletion request even when XDP_TXMD_FLAGS_TIMESTAMP is not set, so its\nmetadata union can be overwritten with an unrequested timestamp. Fixing\nmixed metadata states within one MPWQE requires a separate change."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/intel/igc/igc_main.c", "drivers/net/ethernet/mellanox/mlx5/core/en/xsk/tx.c", "drivers/net/ethernet/stmicro/stmmac/stmmac_main.c", "include/net/libeth/xsk.h", "include/net/xdp_sock_drv.h", "include/net/xsk_buff_pool.h", "net/xdp/xsk_buff_pool.c"], "versions": [{"version": "48eb03dd26304c24f03bdbb9382e89c8564e71df", "lessThan": "8ba0d143e471c85f8a116707c0b42bf046b0a7b3", "status": "affected", "versionType": "git"}, {"version": "48eb03dd26304c24f03bdbb9382e89c8564e71df", "lessThan": "53a5b262d706b572840cbe8feae392538077ee19", "status": "affected", "versionType": "git"}, {"version": "48eb03dd26304c24f03bdbb9382e89c8564e71df", "lessThan": "bf9387488d6394845076928c6ca5315ce5d84f54", "status": "affected", "versionType": "git"}, {"version": "48eb03dd26304c24f03bdbb9382e89c8564e71df", "lessThan": "a6e4b9a6deb9362ef7a0706c70d674e92fe1411a", "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/net/ethernet/intel/igc/igc_main.c", "drivers/net/ethernet/mellanox/mlx5/core/en/xsk/tx.c", "drivers/net/ethernet/stmicro/stmmac/stmmac_main.c", "include/net/libeth/xsk.h", "include/net/xdp_sock_drv.h", "include/net/xsk_buff_pool.h", "net/xdp/xsk_buff_pool.c"], "versions": [{"version": "6.8", "status": "affected"}, {"version": "0", "lessThan": "6.8", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.114", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.52", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.6", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "6.12.114"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "6.18.52"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "7.2.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.8", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/8ba0d143e471c85f8a116707c0b42bf046b0a7b3"}, {"url": "https://git.kernel.org/stable/c/53a5b262d706b572840cbe8feae392538077ee19"}, {"url": "https://git.kernel.org/stable/c/bf9387488d6394845076928c6ca5315ce5d84f54"}, {"url": "https://git.kernel.org/stable/c/a6e4b9a6deb9362ef7a0706c70d674e92fe1411a"}], "title": "xsk: honor XDP_TX_METADATA in zero-copy path", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/net/ethernet/intel/igc/igc_main.c", "drivers/net/ethernet/mellanox/mlx5/core/en/xsk/tx.c", "drivers/net/ethernet/stmicro/stmmac/stmmac_main.c", "include/net/libeth/xsk.h", "include/net/xdp_sock_drv.h", "include/net/xsk_buff_pool.h", "net/xdp/xsk_buff_pool.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "8ba0d143e471c85f8a116707c0b42bf046b0a7b3", "status": "affected", "version": "48eb03dd26304c24f03bdbb9382e89c8564e71df", "versionType": "git"}, {"lessThan": "53a5b262d706b572840cbe8feae392538077ee19", "status": "affected", "version": "48eb03dd26304c24f03bdbb9382e89c8564e71df", "versionType": "git"}, {"lessThan": "bf9387488d6394845076928c6ca5315ce5d84f54", "status": "affected", "version": "48eb03dd26304c24f03bdbb9382e89c8564e71df", "versionType": "git"}, {"lessThan": "a6e4b9a6deb9362ef7a0706c70d674e92fe1411a", "status": "affected", "version": "48eb03dd26304c24f03bdbb9382e89c8564e71df", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/net/ethernet/intel/igc/igc_main.c", "drivers/net/ethernet/mellanox/mlx5/core/en/xsk/tx.c", "drivers/net/ethernet/stmicro/stmmac/stmmac_main.c", "include/net/libeth/xsk.h", "include/net/xdp_sock_drv.h", "include/net/xsk_buff_pool.h", "net/xdp/xsk_buff_pool.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": "6.12.114", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.52", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "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\nxsk: honor XDP_TX_METADATA in zero-copy path\n\nThe zero-copy path reads TX metadata whenever the UMEM has metadata space,\neven if the descriptor does not set XDP_TX_METADATA. Pass descriptor\noptions through the metadata helpers and ignore metadata unless the option\nis set.\n\nThis does not fix the existing per-WQE metadata handling for mlx5 MPWQEs.\nOnly the descriptor that starts a session passes through\nxsk_tx_metadata_request() and configures offload state shared by the batch.\nMetadata on descriptors joining an open session is therefore not validated\nand does not configure its requested offloads. In addition, a non-NULL\nmetadata pointer from such a descriptor is treated as a timestamp\ncompletion request even when XDP_TXMD_FLAGS_TIMESTAMP is not set, so its\nmetadata union can be overwritten with an unrequested timestamp. Fixing\nmixed metadata states within one MPWQE requires a separate change."}], "id": "CVE-2026-90086", "lastModified": "2026-10-21T13:20:36.230", "metrics": {}, "published": "2026-09-17T17:16:58.637", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/53a5b262d706b572840cbe8feae392538077ee19"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8ba0d143e471c85f8a116707c0b42bf046b0a7b3"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a6e4b9a6deb9362ef7a0706c70d674e92fe1411a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bf9387488d6394845076928c6ca5315ce5d84f54"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[48eb03dd26304c24f03bdbb9382e89c8564e71df,53a5b262d706b572840cbe8feae392538077ee19)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[48eb03dd26304c24f03bdbb9382e89c8564e71df,bf9387488d6394845076928c6ca5315ce5d84f54)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[48eb03dd26304c24f03bdbb9382e89c8564e71df,a6e4b9a6deb9362ef7a0706c70d674e92fe1411a)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.8"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.8)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.52,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.6,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-18T14:15:09.500094+00:00", "updated": "2026-09-20T03:30:13.766795+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-20"]}