CVE-2026-52942

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-52942", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-06-09T07:44:35.370Z", "datePublished": "2026-06-24T07:14:30.610Z", "dateUpdated": "2026-11-10T12:47:46.945Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:31:54.446Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_log: validate MAC header was set before dumping it\n\nThe fallback path of dump_mac_header() guards the MAC header access\nonly with \"skb->mac_header != skb->network_header\", without checking\nskb_mac_header_was_set(). When the MAC header is unset, mac_header is\n0xffff, so the test passes and skb_mac_header(skb) returns\nskb->head + 0xffff, ~64 KiB past the buffer; the loop then reads\ndev->hard_header_len bytes out of bounds into the kernel log.\n\nThis is reachable via the netdev logger: nf_log_unknown_packet() calls\ndump_mac_header() unconditionally, and an skb sent through AF_PACKET\nwith PACKET_QDISC_BYPASS reaches the egress hook with mac_header still\nunset (__dev_queue_xmit(), which would reset it, is bypassed).\n\nAdd the skb_mac_header_was_set() check the ARPHRD_ETHER path already\nuses, and replace the open-coded MAC header length test with\nskb_mac_header_len(). Only skbs with an unset MAC header are affected;\nvalid ones are dumped as before.\n\n BUG: KASAN: slab-out-of-bounds in dump_mac_header (net/netfilter/nf_log_syslog.c:831)\n Read of size 1 at addr ffff88800ea49d3f by task exploit/148\n Call Trace:\n kasan_report (mm/kasan/report.c:595)\n dump_mac_header (net/netfilter/nf_log_syslog.c:831)\n nf_log_netdev_packet (net/netfilter/nf_log_syslog.c:938 net/netfilter/nf_log_syslog.c:963)\n nf_log_packet (net/netfilter/nf_log.c:260)\n nft_log_eval (net/netfilter/nft_log.c:60)\n nft_do_chain (net/netfilter/nf_tables_core.c:285)\n nft_do_chain_netdev (net/netfilter/nft_chain_filter.c:307)\n nf_hook_slow (net/netfilter/core.c:619)\n nf_hook_direct_egress (net/packet/af_packet.c:257)\n packet_xmit (net/packet/af_packet.c:280)\n packet_sendmsg (net/packet/af_packet.c:3114)\n __sys_sendto (net/socket.c:2265)"}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "baseScore": 7.1, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The vulnerable path is reached by local kernel interfaces: installing a netdev nftables log rule through nfnetlink and sending an AF_PACKET frame with PACKET_QDISC_BYPASS. It is not triggered directly by unauthenticated remote network packets.\nAC:L - There is no race or fragile timing requirement; once the rule, egress hook, and packet socket option are set, sending a crafted AF_PACKET frame reliably reaches dump_mac_header() with an unset MAC header. The attacker controls the triggering packet path.\nPR:L - The setup requires CAP_NET_ADMIN for nftables and CAP_NET_RAW for AF_PACKET, both namespace-relative and reachable by an unprivileged local user in user/network namespaces in a reasonable deployment where nf_log_all_netns permits netns logging. If only init_net logging is allowed, this rises to init-namespace admin, but the higher-severity reasonable user-namespace scenario is PR:L.\nUI:N - No victim action is required after the attacker has the needed local privileges. The attacker installs the rule and sends the packet themselves.\nS:U - The vulnerability affects kernel networking/logging resources within the same host security authority. It does not cross a VM, IOMMU, or other separate security boundary.\nC:H - The bug reads bytes from roughly 64 KiB past skb->head and prints them into the kernel log, creating a repeatable kernel memory disclosure primitive. Although each log entry is bounded by dev->hard_header_len, repeated triggering and heap influence make high confidentiality impact defensible.\nI:N - The vulnerable operation is an out-of-bounds read used for logging MAC bytes. There is no write, object corruption, or control-flow modification primitive shown by the fix or reachable path.\nA:H - The reported reproducer triggers a KASAN slab-out-of-bounds BUG/oops in dump_mac_header(), and hardened/debug deployments may panic on this condition. The trigger can also be repeated locally, so high availability impact is defensible."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/netfilter/nf_log_syslog.c"], "versions": [{"version": "7eb9282cd0efac08b8377cbd5037ba297c77e3f7", "lessThan": "2e96e1bc9b4d5450e6c33f078e19a9bc1dda6c0b", "status": "affected", "versionType": "git"}, {"version": "7eb9282cd0efac08b8377cbd5037ba297c77e3f7", "lessThan": "d704ee9c7bc68a161684c51a7ac05b446dcf38d4", "status": "affected", "versionType": "git"}, {"version": "7eb9282cd0efac08b8377cbd5037ba297c77e3f7", "lessThan": "befb8968a2abdfa948d5600ea7f7a509a292a590", "status": "affected", "versionType": "git"}, {"version": "7eb9282cd0efac08b8377cbd5037ba297c77e3f7", "lessThan": "8a81e336da685423f5b64aac4d571e63d674c52a", "status": "affected", "versionType": "git"}, {"version": "7eb9282cd0efac08b8377cbd5037ba297c77e3f7", "lessThan": "c38d41134085193efd5b237cf513ad5b3421a60d", "status": "affected", "versionType": "git"}, {"version": "7eb9282cd0efac08b8377cbd5037ba297c77e3f7", "lessThan": "af1b7699466f6556b351fa25d3dc870abfb5d310", "status": "affected", "versionType": "git"}, {"version": "7eb9282cd0efac08b8377cbd5037ba297c77e3f7", "lessThan": "65ef7397eb9a296e91839f5fd10be96f23d332e7", "status": "affected", "versionType": "git"}, {"version": "7eb9282cd0efac08b8377cbd5037ba297c77e3f7", "lessThan": "a84b6fedbc97078788be78dbdd7517d143ad1a77", "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/netfilter/nf_log_syslog.c"], "versions": [{"version": "2.6.36", "status": "affected"}, {"version": "0", "lessThan": "2.6.36", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.261", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.210", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.176", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.143", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.94", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.36", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.0.13", "lessThanOrEqual": "7.0.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1", "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": "2.6.36", "versionEndExcluding": "5.10.261"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.36", "versionEndExcluding": "5.15.210"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.36", "versionEndExcluding": "6.1.176"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.36", "versionEndExcluding": "6.6.143"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.36", "versionEndExcluding": "6.12.94"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.36", "versionEndExcluding": "6.18.36"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.36", "versionEndExcluding": "7.0.13"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": 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It is not triggered directly by unauthenticated remote network packets.\nAC:L - There is no race or fragile timing requirement; once the rule, egress hook, and packet socket option are set, sending a crafted AF_PACKET frame reliably reaches dump_mac_header() with an unset MAC header. The attacker controls the triggering packet path.\nPR:L - The setup requires CAP_NET_ADMIN for nftables and CAP_NET_RAW for AF_PACKET, both namespace-relative and reachable by an unprivileged local user in user/network namespaces in a reasonable deployment where nf_log_all_netns permits netns logging. If only init_net logging is allowed, this rises to init-namespace admin, but the higher-severity reasonable user-namespace scenario is PR:L.\nUI:N - No victim action is required after the attacker has the needed local privileges. The attacker installs the rule and sends the packet themselves.\nS:U - The vulnerability affects kernel networking/logging resources within the same host security authority. It does not cross a VM, IOMMU, or other separate security boundary.\nC:H - The bug reads bytes from roughly 64 KiB past skb->head and prints them into the kernel log, creating a repeatable kernel memory disclosure primitive. Although each log entry is bounded by dev->hard_header_len, repeated triggering and heap influence make high confidentiality impact defensible.\nI:N - The vulnerable operation is an out-of-bounds read used for logging MAC bytes. There is no write, object corruption, or control-flow modification primitive shown by the fix or reachable path.\nA:H - The reported reproducer triggers a KASAN slab-out-of-bounds BUG/oops in dump_mac_header(), and hardened/debug deployments may panic on this condition. The trigger can also be repeated locally, so high availability impact is defensible."}]}], "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "7eb9282cd0efac08b8377cbd5037ba297c77e3f7", "lessThan": "2e96e1bc9b4d5450e6c33f078e19a9bc1dda6c0b", "versionType": "git"}, {"status": "affected", "version": "7eb9282cd0efac08b8377cbd5037ba297c77e3f7", "lessThan": "d704ee9c7bc68a161684c51a7ac05b446dcf38d4", "versionType": "git"}, {"status": "affected", "version": "7eb9282cd0efac08b8377cbd5037ba297c77e3f7", "lessThan": "befb8968a2abdfa948d5600ea7f7a509a292a590", "versionType": "git"}, {"status": "affected", "version": "7eb9282cd0efac08b8377cbd5037ba297c77e3f7", "lessThan": "8a81e336da685423f5b64aac4d571e63d674c52a", "versionType": "git"}, {"status": "affected", "version": "7eb9282cd0efac08b8377cbd5037ba297c77e3f7", "lessThan": "c38d41134085193efd5b237cf513ad5b3421a60d", "versionType": "git"}, {"status": "affected", "version": "7eb9282cd0efac08b8377cbd5037ba297c77e3f7", "lessThan": "af1b7699466f6556b351fa25d3dc870abfb5d310", "versionType": "git"}, {"status": "affected", "version": "7eb9282cd0efac08b8377cbd5037ba297c77e3f7", "lessThan": "65ef7397eb9a296e91839f5fd10be96f23d332e7", "versionType": "git"}, {"status": "affected", "version": "7eb9282cd0efac08b8377cbd5037ba297c77e3f7", "lessThan": "a84b6fedbc97078788be78dbdd7517d143ad1a77", "versionType": "git"}], "programFiles": ["net/netfilter/nf_log_syslog.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "2.6.36"}, {"status": "unaffected", "version": "0", "lessThan": "2.6.36", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.261", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.210", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.176", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.143", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.94", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.36", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.0.13", "versionType": "semver", "lessThanOrEqual": "7.0.*"}, {"status": "unaffected", "version": "7.1", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["net/netfilter/nf_log_syslog.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/2e96e1bc9b4d5450e6c33f078e19a9bc1dda6c0b"}, {"url": "https://git.kernel.org/stable/c/d704ee9c7bc68a161684c51a7ac05b446dcf38d4"}, {"url": "https://git.kernel.org/stable/c/befb8968a2abdfa948d5600ea7f7a509a292a590"}, {"url": "https://git.kernel.org/stable/c/8a81e336da685423f5b64aac4d571e63d674c52a"}, {"url": "https://git.kernel.org/stable/c/c38d41134085193efd5b237cf513ad5b3421a60d"}, {"url": "https://git.kernel.org/stable/c/af1b7699466f6556b351fa25d3dc870abfb5d310"}, {"url": "https://git.kernel.org/stable/c/65ef7397eb9a296e91839f5fd10be96f23d332e7"}, {"url": "https://git.kernel.org/stable/c/a84b6fedbc97078788be78dbdd7517d143ad1a77"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_log: validate MAC header was set before dumping it\n\nThe fallback path of dump_mac_header() guards the MAC header access\nonly with \"skb->mac_header != skb->network_header\", without checking\nskb_mac_header_was_set(). When the MAC header is unset, mac_header is\n0xffff, so the test passes and skb_mac_header(skb) returns\nskb->head + 0xffff, ~64 KiB past the buffer; the loop then reads\ndev->hard_header_len bytes out of bounds into the kernel log.\n\nThis is reachable via the netdev logger: nf_log_unknown_packet() calls\ndump_mac_header() unconditionally, and an skb sent through AF_PACKET\nwith PACKET_QDISC_BYPASS reaches the egress hook with mac_header still\nunset (__dev_queue_xmit(), which would reset it, is bypassed).\n\nAdd the skb_mac_header_was_set() check the ARPHRD_ETHER path already\nuses, and replace the open-coded MAC header length test with\nskb_mac_header_len(). Only skbs with an unset MAC header are affected;\nvalid ones are dumped as before.\n\n BUG: KASAN: slab-out-of-bounds in dump_mac_header (net/netfilter/nf_log_syslog.c:831)\n Read of size 1 at addr ffff88800ea49d3f by task exploit/148\n Call Trace:\n kasan_report (mm/kasan/report.c:595)\n dump_mac_header (net/netfilter/nf_log_syslog.c:831)\n nf_log_netdev_packet (net/netfilter/nf_log_syslog.c:938 net/netfilter/nf_log_syslog.c:963)\n nf_log_packet (net/netfilter/nf_log.c:260)\n nft_log_eval (net/netfilter/nft_log.c:60)\n nft_do_chain (net/netfilter/nf_tables_core.c:285)\n nft_do_chain_netdev (net/netfilter/nft_chain_filter.c:307)\n nf_hook_slow (net/netfilter/core.c:619)\n nf_hook_direct_egress (net/packet/af_packet.c:257)\n packet_xmit (net/packet/af_packet.c:280)\n packet_sendmsg (net/packet/af_packet.c:3114)\n __sys_sendto (net/socket.c:2265)"}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.261", "versionStartIncluding": "2.6.36"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.210", "versionStartIncluding": "2.6.36"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.1.176", "versionStartIncluding": "2.6.36"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.6.143", "versionStartIncluding": "2.6.36"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.12.94", "versionStartIncluding": "2.6.36"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "6.18.36", "versionStartIncluding": "2.6.36"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.0.13", "versionStartIncluding": "2.6.36"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "7.1", "versionStartIncluding": "2.6.36"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:31:54.446Z"}}}, "cveMetadata": {"cveId": "CVE-2026-52942", "state": "PUBLISHED", "dateUpdated": "2026-11-10T12:47:46.945Z", "dateReserved": "2026-06-09T07:44:35.370Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2026-06-24T07:14:30.610Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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When the MAC header is unset, mac_header is\n0xffff, so the test passes and skb_mac_header(skb) returns\nskb->head + 0xffff, ~64 KiB past the buffer; the loop then reads\ndev->hard_header_len bytes out of bounds into the kernel log.\n\nThis is reachable via the netdev logger: nf_log_unknown_packet() calls\ndump_mac_header() unconditionally, and an skb sent through AF_PACKET\nwith PACKET_QDISC_BYPASS reaches the egress hook with mac_header still\nunset (__dev_queue_xmit(), which would reset it, is bypassed).\n\nAdd the skb_mac_header_was_set() check the ARPHRD_ETHER path already\nuses, and replace the open-coded MAC header length test with\nskb_mac_header_len(). Only skbs with an unset MAC header are affected;\nvalid ones are dumped as before.\n\n BUG: KASAN: slab-out-of-bounds in dump_mac_header (net/netfilter/nf_log_syslog.c:831)\n Read of size 1 at addr ffff88800ea49d3f by task exploit/148\n Call Trace:\n kasan_report (mm/kasan/report.c:595)\n dump_mac_header (net/netfilter/nf_log_syslog.c:831)\n nf_log_netdev_packet (net/netfilter/nf_log_syslog.c:938 net/netfilter/nf_log_syslog.c:963)\n nf_log_packet (net/netfilter/nf_log.c:260)\n nft_log_eval (net/netfilter/nft_log.c:60)\n nft_do_chain (net/netfilter/nf_tables_core.c:285)\n nft_do_chain_netdev (net/netfilter/nft_chain_filter.c:307)\n nf_hook_slow (net/netfilter/core.c:619)\n nf_hook_direct_egress (net/packet/af_packet.c:257)\n packet_xmit (net/packet/af_packet.c:280)\n packet_sendmsg (net/packet/af_packet.c:3114)\n __sys_sendto (net/socket.c:2265)"}], "id": "CVE-2026-52942", "lastModified": "2026-11-10T13:19:20.347", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.2, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-52942", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-16T15:23:04.866965Z", "version": "2.0.3"}}]}, "published": "2026-06-24T08:16:24.490", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2e96e1bc9b4d5450e6c33f078e19a9bc1dda6c0b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/65ef7397eb9a296e91839f5fd10be96f23d332e7"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/8a81e336da685423f5b64aac4d571e63d674c52a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a84b6fedbc97078788be78dbdd7517d143ad1a77"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/af1b7699466f6556b351fa25d3dc870abfb5d310"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/befb8968a2abdfa948d5600ea7f7a509a292a590"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/c38d41134085193efd5b237cf513ad5b3421a60d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/d704ee9c7bc68a161684c51a7ac05b446dcf38d4"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-457936.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-125"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: netfilter: nf_log: validate MAC header was set before dumping it", "id": "2492091", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492091"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-125", "details": ["A flaw was found in the Linux kernel's netfilter logging component. This vulnerability occurs because the system does not properly check if a network packet's Media Access Control (MAC) header is valid before attempting to log it. A local attacker could send a specially crafted network packet, leading to an out-of-bounds read. This could result in the disclosure of sensitive information from kernel memory or cause a system crash, leading to a denial of service."], "name": "CVE-2026-52942", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "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": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-06-24T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-52942\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-52942\nhttps://lore.kernel.org/linux-cve-announce/2026062435-CVE-2026-52942-2530@gregkh/T"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7eb9282cd0efac08b8377cbd5037ba297c77e3f7,d704ee9c7bc68a161684c51a7ac05b446dcf38d4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7eb9282cd0efac08b8377cbd5037ba297c77e3f7,befb8968a2abdfa948d5600ea7f7a509a292a590)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7eb9282cd0efac08b8377cbd5037ba297c77e3f7,8a81e336da685423f5b64aac4d571e63d674c52a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7eb9282cd0efac08b8377cbd5037ba297c77e3f7,c38d41134085193efd5b237cf513ad5b3421a60d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7eb9282cd0efac08b8377cbd5037ba297c77e3f7,af1b7699466f6556b351fa25d3dc870abfb5d310)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7eb9282cd0efac08b8377cbd5037ba297c77e3f7,65ef7397eb9a296e91839f5fd10be96f23d332e7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[7eb9282cd0efac08b8377cbd5037ba297c77e3f7,a84b6fedbc97078788be78dbdd7517d143ad1a77)"}}], "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": "2.6.36"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.36)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.210,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.176,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.143,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.94,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.36,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.0.13,7.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1,*)"}}], "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": "2026-06-24T11:30:03.369328+00:00", "updated": "2026-06-28T14:00:21.064091+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}