{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-31736", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-03-09T15:48:24.137Z", "datePublished": "2026-05-01T14:14:33.583Z", "dateUpdated": "2026-05-01T14:14:33.583Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-01T14:14:33.583Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: mtk_ppe: avoid NULL deref when gmac0 is disabled\n\nIf the gmac0 is disabled, the precheck for a valid ingress device will\ncause a NULL pointer deref and crash the system. This happens because\neth->netdev[0] will be NULL but the code will directly try to access\nnetdev_ops.\n\nInstead of just checking for the first net_device, it must be checked if\nany of the mtk_eth net_devices is matching the netdev_ops of the ingress\ndevice."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/net/ethernet/mediatek/mtk_ppe_offload.c"], "versions": [{"version": "73cfd947dbdb25ef9863ac49c4596a7d53ad4025", "lessThan": "0b832aad33e6f160fda310f0306a6483d85e9d6e", "status": "affected", "versionType": "git"}, {"version": "73cfd947dbdb25ef9863ac49c4596a7d53ad4025", "lessThan": "5dff799c677152dde963c3917bacd9127b03e145", "status": "affected", "versionType": "git"}, {"version": "73cfd947dbdb25ef9863ac49c4596a7d53ad4025", "lessThan": "7b2380f0a0e374010c1a4a13203511b9dee5b166", "status": "affected", "versionType": "git"}, {"version": "73cfd947dbdb25ef9863ac49c4596a7d53ad4025", "lessThan": "976ff48c2ac6e6b25b01428c9d7997bcd0fb2949", "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/mediatek/mtk_ppe_offload.c"], "versions": [{"version": "6.11", "status": "affected"}, {"version": "0", "lessThan": "6.11", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.81", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.22", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19.12", "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": "6.11", "versionEndExcluding": "6.12.81"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.18.22"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "6.19.12"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.11", "versionEndExcluding": "7.0"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/0b832aad33e6f160fda310f0306a6483d85e9d6e"}, {"url": "https://git.kernel.org/stable/c/5dff799c677152dde963c3917bacd9127b03e145"}, {"url": "https://git.kernel.org/stable/c/7b2380f0a0e374010c1a4a13203511b9dee5b166"}, {"url": "https://git.kernel.org/stable/c/976ff48c2ac6e6b25b01428c9d7997bcd0fb2949"}], "title": "net: ethernet: mtk_ppe: avoid NULL deref when gmac0 is disabled", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: mtk_ppe: avoid NULL deref when gmac0 is disabled\n\nIf the gmac0 is disabled, the precheck for a valid ingress device will\ncause a NULL pointer deref and crash the system. This happens because\neth->netdev[0] will be NULL but the code will directly try to access\nnetdev_ops.\n\nInstead of just checking for the first net_device, it must be checked if\nany of the mtk_eth net_devices is matching the netdev_ops of the ingress\ndevice."}], "id": "CVE-2026-31736", "lastModified": "2026-05-01T15:24:14.893", "metrics": {}, "published": "2026-05-01T15:16:36.240", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0b832aad33e6f160fda310f0306a6483d85e9d6e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5dff799c677152dde963c3917bacd9127b03e145"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7b2380f0a0e374010c1a4a13203511b9dee5b166"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/976ff48c2ac6e6b25b01428c9d7997bcd0fb2949"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[73cfd947dbdb25ef9863ac49c4596a7d53ad4025,0b832aad33e6f160fda310f0306a6483d85e9d6e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[73cfd947dbdb25ef9863ac49c4596a7d53ad4025,5dff799c677152dde963c3917bacd9127b03e145)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[73cfd947dbdb25ef9863ac49c4596a7d53ad4025,7b2380f0a0e374010c1a4a13203511b9dee5b166)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[73cfd947dbdb25ef9863ac49c4596a7d53ad4025,976ff48c2ac6e6b25b01428c9d7997bcd0fb2949)"}}], "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": "semver", "value": "6.11"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.11)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.81,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.22,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.19.12,6.20.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "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": "2026-05-01T15:45:15.879091+00:00", "updated": "2026-05-01T15:45:15.879192+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}