{"api_version":"1","generated_at":"2026-11-11T06:25:05+00:00","cve":"CVE-2022-49865","urls":{"html":"https://cve.report/CVE-2022-49865","api":"https://cve.report/api/cve/CVE-2022-49865.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2022-49865","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2022-49865"},"summary":{"title":"ipv6: addrlabel: fix infoleak when sending struct ifaddrlblmsg to network","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: addrlabel: fix infoleak when sending struct ifaddrlblmsg to network\n\nWhen copying a `struct ifaddrlblmsg` to the network, __ifal_reserved\nremained uninitialized, resulting in a 1-byte infoleak:\n\n  BUG: KMSAN: kernel-network-infoleak in __netdev_start_xmit ./include/linux/netdevice.h:4841\n   __netdev_start_xmit ./include/linux/netdevice.h:4841\n   netdev_start_xmit ./include/linux/netdevice.h:4857\n   xmit_one net/core/dev.c:3590\n   dev_hard_start_xmit+0x1dc/0x800 net/core/dev.c:3606\n   __dev_queue_xmit+0x17e8/0x4350 net/core/dev.c:4256\n   dev_queue_xmit ./include/linux/netdevice.h:3009\n   __netlink_deliver_tap_skb net/netlink/af_netlink.c:307\n   __netlink_deliver_tap+0x728/0xad0 net/netlink/af_netlink.c:325\n   netlink_deliver_tap net/netlink/af_netlink.c:338\n   __netlink_sendskb net/netlink/af_netlink.c:1263\n   netlink_sendskb+0x1d9/0x200 net/netlink/af_netlink.c:1272\n   netlink_unicast+0x56d/0xf50 net/netlink/af_netlink.c:1360\n   nlmsg_unicast ./include/net/netlink.h:1061\n   rtnl_unicast+0x5a/0x80 net/core/rtnetlink.c:758\n   ip6addrlbl_get+0xfad/0x10f0 net/ipv6/addrlabel.c:628\n   rtnetlink_rcv_msg+0xb33/0x1570 net/core/rtnetlink.c:6082\n  ...\n  Uninit was created at:\n   slab_post_alloc_hook+0x118/0xb00 mm/slab.h:742\n   slab_alloc_node mm/slub.c:3398\n   __kmem_cache_alloc_node+0x4f2/0x930 mm/slub.c:3437\n   __do_kmalloc_node mm/slab_common.c:954\n   __kmalloc_node_track_caller+0x117/0x3d0 mm/slab_common.c:975\n   kmalloc_reserve net/core/skbuff.c:437\n   __alloc_skb+0x27a/0xab0 net/core/skbuff.c:509\n   alloc_skb ./include/linux/skbuff.h:1267\n   nlmsg_new ./include/net/netlink.h:964\n   ip6addrlbl_get+0x490/0x10f0 net/ipv6/addrlabel.c:608\n   rtnetlink_rcv_msg+0xb33/0x1570 net/core/rtnetlink.c:6082\n   netlink_rcv_skb+0x299/0x550 net/netlink/af_netlink.c:2540\n   rtnetlink_rcv+0x26/0x30 net/core/rtnetlink.c:6109\n   netlink_unicast_kernel net/netlink/af_netlink.c:1319\n   netlink_unicast+0x9ab/0xf50 net/netlink/af_netlink.c:1345\n   netlink_sendmsg+0xebc/0x10f0 net/netlink/af_netlink.c:1921\n  ...\n\nThis patch ensures that the reserved field is always initialized.","state":"PUBLISHED","assigner":"Linux","published_at":"2025-05-01 15:16:11","updated_at":"2026-11-05 20:17:16"},"problem_types":["CWE-909"],"metrics":[{"version":"3.1","source":"nvd@nist.gov","type":"Primary","score":"7.1","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H","data":{"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","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"HIGH"}}],"references":[{"url":"https://git.kernel.org/stable/c/58cd7fdc8c1e6c7873acc08f190069fed88d1c12","name":"https://git.kernel.org/stable/c/58cd7fdc8c1e6c7873acc08f190069fed88d1c12","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a033b86c7f7621fde31f0364af8986f43b44914f","name":"https://git.kernel.org/stable/c/a033b86c7f7621fde31f0364af8986f43b44914f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6d26d0587abccb9835382a0b53faa7b9b1cd83e3","name":"https://git.kernel.org/stable/c/6d26d0587abccb9835382a0b53faa7b9b1cd83e3","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/568a47ff756f913e8b374c2af9d22cd2c772c744","name":"https://git.kernel.org/stable/c/568a47ff756f913e8b374c2af9d22cd2c772c744","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2acb2779b147decd300c117683d5a32ce61c75d6","name":"https://git.kernel.org/stable/c/2acb2779b147decd300c117683d5a32ce61c75d6","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0f85b7ae7c4b5d7b4bbf7ac653a733c181a8a2bf","name":"https://git.kernel.org/stable/c/0f85b7ae7c4b5d7b4bbf7ac653a733c181a8a2bf","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c23fb2c82267638f9d206cb96bb93e1f93ad7828","name":"https://git.kernel.org/stable/c/c23fb2c82267638f9d206cb96bb93e1f93ad7828","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/49e92ba5ecd7d72ba369dde2ccff738edd028a47","name":"https://git.kernel.org/stable/c/49e92ba5ecd7d72ba369dde2ccff738edd028a47","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2022-49865","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-49865","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2a8cc6c89039e0530a3335954253b76ed0f9339a 568a47ff756f913e8b374c2af9d22cd2c772c744 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2a8cc6c89039e0530a3335954253b76ed0f9339a 0f85b7ae7c4b5d7b4bbf7ac653a733c181a8a2bf git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2a8cc6c89039e0530a3335954253b76ed0f9339a 6d26d0587abccb9835382a0b53faa7b9b1cd83e3 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2a8cc6c89039e0530a3335954253b76ed0f9339a 58cd7fdc8c1e6c7873acc08f190069fed88d1c12 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2022","cve_id":"49865","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2022-49865","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-11-05T19:50:52.329864Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-11-05T20:00:10.037Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/ipv6/addrlabel.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"568a47ff756f913e8b374c2af9d22cd2c772c744","status":"affected","version":"2a8cc6c89039e0530a3335954253b76ed0f9339a","versionType":"git"},{"lessThan":"0f85b7ae7c4b5d7b4bbf7ac653a733c181a8a2bf","status":"affected","version":"2a8cc6c89039e0530a3335954253b76ed0f9339a","versionType":"git"},{"lessThan":"6d26d0587abccb9835382a0b53faa7b9b1cd83e3","status":"affected","version":"2a8cc6c89039e0530a3335954253b76ed0f9339a","versionType":"git"},{"lessThan":"58cd7fdc8c1e6c7873acc08f190069fed88d1c12","status":"affected","version":"2a8cc6c89039e0530a3335954253b76ed0f9339a","versionType":"git"},{"lessThan":"a033b86c7f7621fde31f0364af8986f43b44914f","status":"affected","version":"2a8cc6c89039e0530a3335954253b76ed0f9339a","versionType":"git"},{"lessThan":"2acb2779b147decd300c117683d5a32ce61c75d6","status":"affected","version":"2a8cc6c89039e0530a3335954253b76ed0f9339a","versionType":"git"},{"lessThan":"49e92ba5ecd7d72ba369dde2ccff738edd028a47","status":"affected","version":"2a8cc6c89039e0530a3335954253b76ed0f9339a","versionType":"git"},{"lessThan":"c23fb2c82267638f9d206cb96bb93e1f93ad7828","status":"affected","version":"2a8cc6c89039e0530a3335954253b76ed0f9339a","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/ipv6/addrlabel.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.25"},{"lessThan":"2.6.25","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"4.9.*","status":"unaffected","version":"4.9.334","versionType":"semver"},{"lessThanOrEqual":"4.14.*","status":"unaffected","version":"4.14.300","versionType":"semver"},{"lessThanOrEqual":"4.19.*","status":"unaffected","version":"4.19.267","versionType":"semver"},{"lessThanOrEqual":"5.4.*","status":"unaffected","version":"5.4.225","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.155","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.79","versionType":"semver"},{"lessThanOrEqual":"6.0.*","status":"unaffected","version":"6.0.9","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"6.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"4.9.334","versionStartIncluding":"2.6.25","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"4.14.300","versionStartIncluding":"2.6.25","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"4.19.267","versionStartIncluding":"2.6.25","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.4.225","versionStartIncluding":"2.6.25","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.155","versionStartIncluding":"2.6.25","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.79","versionStartIncluding":"2.6.25","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.0.9","versionStartIncluding":"2.6.25","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1","versionStartIncluding":"2.6.25","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: addrlabel: fix infoleak when sending struct ifaddrlblmsg to network\n\nWhen copying a `struct ifaddrlblmsg` to the network, __ifal_reserved\nremained uninitialized, resulting in a 1-byte infoleak:\n\n  BUG: KMSAN: kernel-network-infoleak in __netdev_start_xmit ./include/linux/netdevice.h:4841\n   __netdev_start_xmit ./include/linux/netdevice.h:4841\n   netdev_start_xmit ./include/linux/netdevice.h:4857\n   xmit_one net/core/dev.c:3590\n   dev_hard_start_xmit+0x1dc/0x800 net/core/dev.c:3606\n   __dev_queue_xmit+0x17e8/0x4350 net/core/dev.c:4256\n   dev_queue_xmit ./include/linux/netdevice.h:3009\n   __netlink_deliver_tap_skb net/netlink/af_netlink.c:307\n   __netlink_deliver_tap+0x728/0xad0 net/netlink/af_netlink.c:325\n   netlink_deliver_tap net/netlink/af_netlink.c:338\n   __netlink_sendskb net/netlink/af_netlink.c:1263\n   netlink_sendskb+0x1d9/0x200 net/netlink/af_netlink.c:1272\n   netlink_unicast+0x56d/0xf50 net/netlink/af_netlink.c:1360\n   nlmsg_unicast ./include/net/netlink.h:1061\n   rtnl_unicast+0x5a/0x80 net/core/rtnetlink.c:758\n   ip6addrlbl_get+0xfad/0x10f0 net/ipv6/addrlabel.c:628\n   rtnetlink_rcv_msg+0xb33/0x1570 net/core/rtnetlink.c:6082\n  ...\n  Uninit was created at:\n   slab_post_alloc_hook+0x118/0xb00 mm/slab.h:742\n   slab_alloc_node mm/slub.c:3398\n   __kmem_cache_alloc_node+0x4f2/0x930 mm/slub.c:3437\n   __do_kmalloc_node mm/slab_common.c:954\n   __kmalloc_node_track_caller+0x117/0x3d0 mm/slab_common.c:975\n   kmalloc_reserve net/core/skbuff.c:437\n   __alloc_skb+0x27a/0xab0 net/core/skbuff.c:509\n   alloc_skb ./include/linux/skbuff.h:1267\n   nlmsg_new ./include/net/netlink.h:964\n   ip6addrlbl_get+0x490/0x10f0 net/ipv6/addrlabel.c:608\n   rtnetlink_rcv_msg+0xb33/0x1570 net/core/rtnetlink.c:6082\n   netlink_rcv_skb+0x299/0x550 net/netlink/af_netlink.c:2540\n   rtnetlink_rcv+0x26/0x30 net/core/rtnetlink.c:6109\n   netlink_unicast_kernel net/netlink/af_netlink.c:1319\n   netlink_unicast+0x9ab/0xf50 net/netlink/af_netlink.c:1345\n   netlink_sendmsg+0xebc/0x10f0 net/netlink/af_netlink.c:1921\n  ...\n\nThis patch ensures that the reserved field is always initialized."}],"providerMetadata":{"dateUpdated":"2026-05-11T19:08:14.487Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/568a47ff756f913e8b374c2af9d22cd2c772c744"},{"url":"https://git.kernel.org/stable/c/0f85b7ae7c4b5d7b4bbf7ac653a733c181a8a2bf"},{"url":"https://git.kernel.org/stable/c/6d26d0587abccb9835382a0b53faa7b9b1cd83e3"},{"url":"https://git.kernel.org/stable/c/58cd7fdc8c1e6c7873acc08f190069fed88d1c12"},{"url":"https://git.kernel.org/stable/c/a033b86c7f7621fde31f0364af8986f43b44914f"},{"url":"https://git.kernel.org/stable/c/2acb2779b147decd300c117683d5a32ce61c75d6"},{"url":"https://git.kernel.org/stable/c/49e92ba5ecd7d72ba369dde2ccff738edd028a47"},{"url":"https://git.kernel.org/stable/c/c23fb2c82267638f9d206cb96bb93e1f93ad7828"}],"title":"ipv6: addrlabel: fix infoleak when sending struct ifaddrlblmsg to network","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2022-49865","datePublished":"2025-05-01T14:10:17.673Z","dateReserved":"2025-05-01T14:05:17.237Z","dateUpdated":"2026-11-05T20:00:10.037Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2025-05-01 15:16:11","lastModifiedDate":"2026-11-05 20:17:16","problem_types":["CWE-909"],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"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","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.2}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-11-05T19:50:52.329864Z","id":"CVE-2022-49865","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA 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addrlabel: fix infoleak when sending struct ifaddrlblmsg t","CVE":"CVE-2022-49865","Year":"2022"},"notes":[{"CveYear":"2022","CveId":"49865","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: addrlabel: fix infoleak when sending struct ifaddrlblmsg to network\n\nWhen copying a `struct ifaddrlblmsg` to the network, __ifal_reserved\nremained uninitialized, resulting in a 1-byte infoleak:\n\n  BUG: KMSAN: kernel-network-infoleak in __netdev_start_xmit ./include/linux/netdevice.h:4841\n   __netdev_start_xmit ./include/linux/netdevice.h:4841\n   netdev_start_xmit ./include/linux/netdevice.h:4857\n   xmit_one net/core/dev.c:3590\n   dev_hard_start_xmit+0x1dc/0x800 net/core/dev.c:3606\n   __dev_queue_xmit+0x17e8/0x4350 net/core/dev.c:4256\n   dev_queue_xmit ./include/linux/netdevice.h:3009\n   __netlink_deliver_tap_skb net/netlink/af_netlink.c:307\n   __netlink_deliver_tap+0x728/0xad0 net/netlink/af_netlink.c:325\n   netlink_deliver_tap net/netlink/af_netlink.c:338\n   __netlink_sendskb net/netlink/af_netlink.c:1263\n   netlink_sendskb+0x1d9/0x200 net/netlink/af_netlink.c:1272\n   netlink_unicast+0x56d/0xf50 net/netlink/af_netlink.c:1360\n   nlmsg_unicast ./include/net/netlink.h:1061\n   rtnl_unicast+0x5a/0x80 net/core/rtnetlink.c:758\n   ip6addrlbl_get+0xfad/0x10f0 net/ipv6/addrlabel.c:628\n   rtnetlink_rcv_msg+0xb33/0x1570 net/core/rtnetlink.c:6082\n  ...\n  Uninit was created at:\n   slab_post_alloc_hook+0x118/0xb00 mm/slab.h:742\n   slab_alloc_node mm/slub.c:3398\n   __kmem_cache_alloc_node+0x4f2/0x930 mm/slub.c:3437\n   __do_kmalloc_node mm/slab_common.c:954\n   __kmalloc_node_track_caller+0x117/0x3d0 mm/slab_common.c:975\n   kmalloc_reserve net/core/skbuff.c:437\n   __alloc_skb+0x27a/0xab0 net/core/skbuff.c:509\n   alloc_skb ./include/linux/skbuff.h:1267\n   nlmsg_new ./include/net/netlink.h:964\n   ip6addrlbl_get+0x490/0x10f0 net/ipv6/addrlabel.c:608\n   rtnetlink_rcv_msg+0xb33/0x1570 net/core/rtnetlink.c:6082\n   netlink_rcv_skb+0x299/0x550 net/netlink/af_netlink.c:2540\n   rtnetlink_rcv+0x26/0x30 net/core/rtnetlink.c:6109\n   netlink_unicast_kernel net/netlink/af_netlink.c:1319\n   netlink_unicast+0x9ab/0xf50 net/netlink/af_netlink.c:1345\n   netlink_sendmsg+0xebc/0x10f0 net/netlink/af_netlink.c:1921\n  ...\n\nThis patch ensures that the reserved field is always initialized.","Type":"Description","Title":"ipv6: addrlabel: fix infoleak when sending struct ifaddrlblmsg t"}]}}}