{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-43083", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-05-01T14:12:55.983Z", "datePublished": "2026-05-06T07:40:18.504Z", "dateUpdated": "2026-05-06T07:40:18.504Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-06T07:40:18.504Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ioam6: fix OOB and missing lock\n\nWhen trace->type.bit6 is set:\n\n if (trace->type.bit6) {\n ...\n queue = skb_get_tx_queue(dev, skb);\n qdisc = rcu_dereference(queue->qdisc);\n\nThis code can lead to an out-of-bounds access of the dev->_tx[] array\nwhen is_input is true. In such a case, the packet is on the RX path and\nskb->queue_mapping contains the RX queue index of the ingress device. If\nthe ingress device has more RX queues than the egress device (dev) has\nTX queues, skb_get_queue_mapping(skb) will exceed dev->num_tx_queues.\nAdd a check to avoid this situation since skb_get_tx_queue() does not\nclamp the index. This issue has also revealed that per queue visibility\ncannot be accurate and will be replaced later as a new feature.\n\nWhile at it, add missing lock around qdisc_qstats_qlen_backlog(). The\nfunction __ioam6_fill_trace_data() is called from both softirq and\nprocess contexts, hence the use of spin_lock_bh() here."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ipv6/ioam6.c"], "versions": [{"version": "b63c5478e9cb1d1504eb02d9dac827ad24612b32", "lessThan": "6d1d9ed9b409e0662241e3d245d574a18f643494", "status": "affected", "versionType": "git"}, {"version": "b63c5478e9cb1d1504eb02d9dac827ad24612b32", "lessThan": "95a1334748c95dd15546056280ade0c4b8dd7b78", "status": "affected", "versionType": "git"}, {"version": "b63c5478e9cb1d1504eb02d9dac827ad24612b32", "lessThan": "b30b1675aa2bcf0491fd3830b051df4e08a7c8ca", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/ipv6/ioam6.c"], "versions": [{"version": "5.17", "status": "affected"}, {"version": "0", "lessThan": "5.17", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.24", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.14", "lessThanOrEqual": "6.19.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0", "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": "5.17", "versionEndExcluding": "6.18.24"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "6.19.14"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.17", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/6d1d9ed9b409e0662241e3d245d574a18f643494"}, {"url": "https://git.kernel.org/stable/c/95a1334748c95dd15546056280ade0c4b8dd7b78"}, {"url": "https://git.kernel.org/stable/c/b30b1675aa2bcf0491fd3830b051df4e08a7c8ca"}], "title": "net: ioam6: fix OOB and missing lock", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ioam6: fix OOB and missing lock\n\nWhen trace->type.bit6 is set:\n\n if (trace->type.bit6) {\n ...\n queue = skb_get_tx_queue(dev, skb);\n qdisc = rcu_dereference(queue->qdisc);\n\nThis code can lead to an out-of-bounds access of the dev->_tx[] array\nwhen is_input is true. In such a case, the packet is on the RX path and\nskb->queue_mapping contains the RX queue index of the ingress device. If\nthe ingress device has more RX queues than the egress device (dev) has\nTX queues, skb_get_queue_mapping(skb) will exceed dev->num_tx_queues.\nAdd a check to avoid this situation since skb_get_tx_queue() does not\nclamp the index. This issue has also revealed that per queue visibility\ncannot be accurate and will be replaced later as a new feature.\n\nWhile at it, add missing lock around qdisc_qstats_qlen_backlog(). The\nfunction __ioam6_fill_trace_data() is called from both softirq and\nprocess contexts, hence the use of spin_lock_bh() here."}], "id": "CVE-2026-43083", "lastModified": "2026-05-06T10:16:21.493", "metrics": {}, "published": "2026-05-06T10:16:21.493", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/6d1d9ed9b409e0662241e3d245d574a18f643494"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/95a1334748c95dd15546056280ade0c4b8dd7b78"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b30b1675aa2bcf0491fd3830b051df4e08a7c8ca"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b63c5478e9cb1d1504eb02d9dac827ad24612b32,6d1d9ed9b409e0662241e3d245d574a18f643494)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b63c5478e9cb1d1504eb02d9dac827ad24612b32,95a1334748c95dd15546056280ade0c4b8dd7b78)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b63c5478e9cb1d1504eb02d9dac827ad24612b32,b30b1675aa2bcf0491fd3830b051df4e08a7c8ca)"}}], "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": "5.17"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.17)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.24,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.14,6.20.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.0,*]"}}], "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": "2026-05-06T11:30:26.608069+00:00", "title": "Out\u2011of\u2011bounds array access and missing lock in Linux kernel IOAM6 queue handling", "updated": "2026-05-06T12:15:03.444721+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-20", "CWE-362"]}