{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2022-49865", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2022-49865", "idYear": 2022, "status": "PUBLISHED", "publishedAt": "2025-05-01T14:10:17.673Z", "updatedAt": "2026-05-11T19:08:14.487Z", "importedAt": "2026-10-24T01:56:49.724Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "ipv6: addrlabel: fix infoleak when sending struct ifaddrlblmsg to network", "summary": "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.", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "2a8cc6c89039e0530a3335954253b76ed0f9339a", "status": "affected", "versionType": "git", "lessThan": "568a47ff756f913e8b374c2af9d22cd2c772c744" }, { "version": "2a8cc6c89039e0530a3335954253b76ed0f9339a", "status": "affected", "versionType": "git", "lessThan": "0f85b7ae7c4b5d7b4bbf7ac653a733c181a8a2bf" }, { "version": "2a8cc6c89039e0530a3335954253b76ed0f9339a", "status": "affected", "versionType": "git", "lessThan": "6d26d0587abccb9835382a0b53faa7b9b1cd83e3" }, { "version": "2a8cc6c89039e0530a3335954253b76ed0f9339a", "status": "affected", "versionType": "git", "lessThan": "58cd7fdc8c1e6c7873acc08f190069fed88d1c12" }, { "version": "2a8cc6c89039e0530a3335954253b76ed0f9339a", "status": "affected", "versionType": "git", "lessThan": "a033b86c7f7621fde31f0364af8986f43b44914f" }, { "version": "2a8cc6c89039e0530a3335954253b76ed0f9339a", "status": "affected", "versionType": "git", "lessThan": "2acb2779b147decd300c117683d5a32ce61c75d6" }, { "version": "2a8cc6c89039e0530a3335954253b76ed0f9339a", "status": "affected", "versionType": "git", "lessThan": "49e92ba5ecd7d72ba369dde2ccff738edd028a47" }, { "version": "2a8cc6c89039e0530a3335954253b76ed0f9339a", "status": "affected", "versionType": "git", "lessThan": "c23fb2c82267638f9d206cb96bb93e1f93ad7828" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "2.6.25", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "2.6.25" }, { "version": "4.9.334", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.9.*" }, { "version": "4.14.300", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.14.*" }, { "version": "4.19.267", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.19.*" }, { "version": "5.4.225", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.155", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.79", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.0.9", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.0.*" }, { "version": "6.1", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }