CVE-2026-68288

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-68288", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-30T09:28:09.380Z", "datePublished": "2026-08-10T12:02:21.097Z", "dateUpdated": "2026-10-03T10:55:44.026Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-03T10:55:44.026Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: drop_monitor: fix info leak in NET_DM_ATTR_PAYLOAD\n\nnet_dm_packet_report_fill() and net_dm_hw_packet_report_fill() open code\nthe NET_DM_ATTR_PAYLOAD attribute to avoid zeroing the packet payload\nbefore overwriting it with skb_copy_bits().\n\nskb_put() reserves nla_total_size(payload_len), i.e. the header plus the\nNLA_ALIGN() padding, but only payload_len bytes are copied in. When\npayload_len is not a multiple of 4 the 1-3 padding bytes are never\ninitialized and are leaked to user space inside the netlink message.\n\nKMSAN confirms the leak for the software path when the packet payload\nlength is not 4-byte aligned:\n\n BUG: KMSAN: kernel-infoleak in _copy_to_iter\n _copy_to_iter\n __skb_datagram_iter\n skb_copy_datagram_iter\n netlink_recvmsg\n sock_recvmsg\n __sys_recvfrom\n Uninit was created at:\n kmem_cache_alloc_node_noprof\n __alloc_skb\n net_dm_packet_work\n Bytes 173-175 of 176 are uninitialized\n\nUse __nla_reserve(), which sets up the attribute header and zeroes the\npadding, instead of open coding the attribute construction."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/core/drop_monitor.c"], "versions": [{"version": "ca30707dee2bc8bc81cfd8b4277fe90f7ca6df1f", "lessThan": "d427b152b663cb2b19fcd449d792e17edbe4a938", "status": "affected", "versionType": "git"}, {"version": "ca30707dee2bc8bc81cfd8b4277fe90f7ca6df1f", "lessThan": "3c0bc7dcc5f9257d25c59eeb7ccb4df33dcfc446", "status": "affected", "versionType": "git"}, {"version": "ca30707dee2bc8bc81cfd8b4277fe90f7ca6df1f", "lessThan": "05173de42a9923a3eaadebcb0dd5bc83ffba174c", "status": "affected", "versionType": "git"}, {"version": "ca30707dee2bc8bc81cfd8b4277fe90f7ca6df1f", "lessThan": "89178ffe5bddc99c057ba2768db1f8d9c5e1408c", "status": "affected", "versionType": "git"}, {"version": "ca30707dee2bc8bc81cfd8b4277fe90f7ca6df1f", "lessThan": "8fd6975d2aecc36b25ee82b6aef88e62a3527ccb", "status": "affected", "versionType": "git"}, {"version": "ca30707dee2bc8bc81cfd8b4277fe90f7ca6df1f", "lessThan": "5e9c8baee0329fbefe7c67aea945e2a07f15e98b", "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/core/drop_monitor.c"], "versions": [{"version": "5.4", "status": "affected"}, {"version": "0", "lessThan": "5.4", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.189", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.158", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.111", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.53", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.6", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "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": "5.4", "versionEndExcluding": "6.1.189"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "6.12.111"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "6.18.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "7.1.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.4", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/d427b152b663cb2b19fcd449d792e17edbe4a938"}, {"url": "https://git.kernel.org/stable/c/3c0bc7dcc5f9257d25c59eeb7ccb4df33dcfc446"}, {"url": "https://git.kernel.org/stable/c/05173de42a9923a3eaadebcb0dd5bc83ffba174c"}, {"url": "https://git.kernel.org/stable/c/89178ffe5bddc99c057ba2768db1f8d9c5e1408c"}, {"url": "https://git.kernel.org/stable/c/8fd6975d2aecc36b25ee82b6aef88e62a3527ccb"}, {"url": "https://git.kernel.org/stable/c/5e9c8baee0329fbefe7c67aea945e2a07f15e98b"}], "title": "net: drop_monitor: fix info leak in NET_DM_ATTR_PAYLOAD", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/core/drop_monitor.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "d427b152b663cb2b19fcd449d792e17edbe4a938", "status": "affected", "version": "ca30707dee2bc8bc81cfd8b4277fe90f7ca6df1f", "versionType": "git"}, {"lessThan": "3c0bc7dcc5f9257d25c59eeb7ccb4df33dcfc446", "status": "affected", "version": "ca30707dee2bc8bc81cfd8b4277fe90f7ca6df1f", "versionType": "git"}, {"lessThan": "05173de42a9923a3eaadebcb0dd5bc83ffba174c", "status": "affected", "version": "ca30707dee2bc8bc81cfd8b4277fe90f7ca6df1f", "versionType": "git"}, {"lessThan": "89178ffe5bddc99c057ba2768db1f8d9c5e1408c", "status": "affected", "version": "ca30707dee2bc8bc81cfd8b4277fe90f7ca6df1f", "versionType": "git"}, {"lessThan": "8fd6975d2aecc36b25ee82b6aef88e62a3527ccb", "status": "affected", "version": "ca30707dee2bc8bc81cfd8b4277fe90f7ca6df1f", "versionType": "git"}, {"lessThan": "5e9c8baee0329fbefe7c67aea945e2a07f15e98b", "status": "affected", "version": "ca30707dee2bc8bc81cfd8b4277fe90f7ca6df1f", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/core/drop_monitor.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.4"}, {"lessThan": "5.4", "status": "unaffected", "version": "0", "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": "7.1.*", "status": "unaffected", "version": "7.1.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "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\nnet: drop_monitor: fix info leak in NET_DM_ATTR_PAYLOAD\n\nnet_dm_packet_report_fill() and net_dm_hw_packet_report_fill() open code\nthe NET_DM_ATTR_PAYLOAD attribute to avoid zeroing the packet payload\nbefore overwriting it with skb_copy_bits().\n\nskb_put() reserves nla_total_size(payload_len), i.e. the header plus the\nNLA_ALIGN() padding, but only payload_len bytes are copied in. When\npayload_len is not a multiple of 4 the 1-3 padding bytes are never\ninitialized and are leaked to user space inside the netlink message.\n\nKMSAN confirms the leak for the software path when the packet payload\nlength is not 4-byte aligned:\n\n BUG: KMSAN: kernel-infoleak in _copy_to_iter\n _copy_to_iter\n __skb_datagram_iter\n skb_copy_datagram_iter\n netlink_recvmsg\n sock_recvmsg\n __sys_recvfrom\n Uninit was created at:\n kmem_cache_alloc_node_noprof\n __alloc_skb\n net_dm_packet_work\n Bytes 173-175 of 176 are uninitialized\n\nUse __nla_reserve(), which sets up the attribute header and zeroes the\npadding, instead of open coding the attribute construction."}], "id": "CVE-2026-68288", "lastModified": "2026-10-03T11:17:36.573", "metrics": {}, "published": "2026-08-10T13:20:18.123", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/05173de42a9923a3eaadebcb0dd5bc83ffba174c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3c0bc7dcc5f9257d25c59eeb7ccb4df33dcfc446"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5e9c8baee0329fbefe7c67aea945e2a07f15e98b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/89178ffe5bddc99c057ba2768db1f8d9c5e1408c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8fd6975d2aecc36b25ee82b6aef88e62a3527ccb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d427b152b663cb2b19fcd449d792e17edbe4a938"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: net: drop_monitor: fix info leak in NET_DM_ATTR_PAYLOAD", "id": "2513420", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513420"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-908", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet: drop_monitor: fix info leak in NET_DM_ATTR_PAYLOAD\nnet_dm_packet_report_fill() and net_dm_hw_packet_report_fill() open code\nthe NET_DM_ATTR_PAYLOAD attribute to avoid zeroing the packet payload\nbefore overwriting it with skb_copy_bits().\nskb_put() reserves nla_total_size(payload_len), i.e. the header plus the\nNLA_ALIGN() padding, but only payload_len bytes are copied in. When\npayload_len is not a multiple of 4 the 1-3 padding bytes are never\ninitialized and are leaked to user space inside the netlink message.\nKMSAN confirms the leak for the software path when the packet payload\nlength is not 4-byte aligned:\nBUG: KMSAN: kernel-infoleak in _copy_to_iter\n_copy_to_iter\n__skb_datagram_iter\nskb_copy_datagram_iter\nnetlink_recvmsg\nsock_recvmsg\n__sys_recvfrom\nUninit was created at:\nkmem_cache_alloc_node_noprof\n__alloc_skb\nnet_dm_packet_work\nBytes 173-175 of 176 are uninitialized\nUse __nla_reserve(), which sets up the attribute header and zeroes the\npadding, instead of open coding the attribute construction.", "A flaw was found in the Linux kernel's `drop_monitor` module. This vulnerability allows for information disclosure due to uninitialized padding bytes in the `NET_DM_ATTR_PAYLOAD` attribute. When the packet payload length is not a multiple of four, these uninitialized bytes are leaked to user space. A local attacker could exploit this to obtain sensitive kernel memory information."], "name": "CVE-2026-68288", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-08-10T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-68288\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-68288\nhttps://lore.kernel.org/linux-cve-announce/2026081027-CVE-2026-68288-da09@gregkh/T"], "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ca30707dee2bc8bc81cfd8b4277fe90f7ca6df1f,8fd6975d2aecc36b25ee82b6aef88e62a3527ccb)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[ca30707dee2bc8bc81cfd8b4277fe90f7ca6df1f,5e9c8baee0329fbefe7c67aea945e2a07f15e98b)"}}], "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": "5.4"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,5.4)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.6,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc5,*]"}}], "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": "2026-08-10T17:30:17.999917+00:00", "updated": "2026-08-13T06:15:15.344855+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}