CVE-2022-49865 (GCVE-0-2022-49865)

Vulnerability from cvelistv5 – Published: 2025-05-01 14:10 – Updated: 2025-05-04 08:47
VLAI?
Title
ipv6: addrlabel: fix infoleak when sending struct ifaddrlblmsg to network
Summary
In the Linux kernel, the following vulnerability has been resolved: ipv6: addrlabel: fix infoleak when sending struct ifaddrlblmsg to network When copying a `struct ifaddrlblmsg` to the network, __ifal_reserved remained uninitialized, resulting in a 1-byte infoleak: BUG: KMSAN: kernel-network-infoleak in __netdev_start_xmit ./include/linux/netdevice.h:4841 __netdev_start_xmit ./include/linux/netdevice.h:4841 netdev_start_xmit ./include/linux/netdevice.h:4857 xmit_one net/core/dev.c:3590 dev_hard_start_xmit+0x1dc/0x800 net/core/dev.c:3606 __dev_queue_xmit+0x17e8/0x4350 net/core/dev.c:4256 dev_queue_xmit ./include/linux/netdevice.h:3009 __netlink_deliver_tap_skb net/netlink/af_netlink.c:307 __netlink_deliver_tap+0x728/0xad0 net/netlink/af_netlink.c:325 netlink_deliver_tap net/netlink/af_netlink.c:338 __netlink_sendskb net/netlink/af_netlink.c:1263 netlink_sendskb+0x1d9/0x200 net/netlink/af_netlink.c:1272 netlink_unicast+0x56d/0xf50 net/netlink/af_netlink.c:1360 nlmsg_unicast ./include/net/netlink.h:1061 rtnl_unicast+0x5a/0x80 net/core/rtnetlink.c:758 ip6addrlbl_get+0xfad/0x10f0 net/ipv6/addrlabel.c:628 rtnetlink_rcv_msg+0xb33/0x1570 net/core/rtnetlink.c:6082 ... Uninit was created at: slab_post_alloc_hook+0x118/0xb00 mm/slab.h:742 slab_alloc_node mm/slub.c:3398 __kmem_cache_alloc_node+0x4f2/0x930 mm/slub.c:3437 __do_kmalloc_node mm/slab_common.c:954 __kmalloc_node_track_caller+0x117/0x3d0 mm/slab_common.c:975 kmalloc_reserve net/core/skbuff.c:437 __alloc_skb+0x27a/0xab0 net/core/skbuff.c:509 alloc_skb ./include/linux/skbuff.h:1267 nlmsg_new ./include/net/netlink.h:964 ip6addrlbl_get+0x490/0x10f0 net/ipv6/addrlabel.c:608 rtnetlink_rcv_msg+0xb33/0x1570 net/core/rtnetlink.c:6082 netlink_rcv_skb+0x299/0x550 net/netlink/af_netlink.c:2540 rtnetlink_rcv+0x26/0x30 net/core/rtnetlink.c:6109 netlink_unicast_kernel net/netlink/af_netlink.c:1319 netlink_unicast+0x9ab/0xf50 net/netlink/af_netlink.c:1345 netlink_sendmsg+0xebc/0x10f0 net/netlink/af_netlink.c:1921 ... This patch ensures that the reserved field is always initialized.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 2a8cc6c89039e0530a3335954253b76ed0f9339a , < 568a47ff756f913e8b374c2af9d22cd2c772c744 (git)
Affected: 2a8cc6c89039e0530a3335954253b76ed0f9339a , < 0f85b7ae7c4b5d7b4bbf7ac653a733c181a8a2bf (git)
Affected: 2a8cc6c89039e0530a3335954253b76ed0f9339a , < 6d26d0587abccb9835382a0b53faa7b9b1cd83e3 (git)
Affected: 2a8cc6c89039e0530a3335954253b76ed0f9339a , < 58cd7fdc8c1e6c7873acc08f190069fed88d1c12 (git)
Affected: 2a8cc6c89039e0530a3335954253b76ed0f9339a , < a033b86c7f7621fde31f0364af8986f43b44914f (git)
Affected: 2a8cc6c89039e0530a3335954253b76ed0f9339a , < 2acb2779b147decd300c117683d5a32ce61c75d6 (git)
Affected: 2a8cc6c89039e0530a3335954253b76ed0f9339a , < 49e92ba5ecd7d72ba369dde2ccff738edd028a47 (git)
Affected: 2a8cc6c89039e0530a3335954253b76ed0f9339a , < c23fb2c82267638f9d206cb96bb93e1f93ad7828 (git)
Create a notification for this product.
    Linux Linux Affected: 2.6.25
Unaffected: 0 , < 2.6.25 (semver)
Unaffected: 4.9.334 , ≤ 4.9.* (semver)
Unaffected: 4.14.300 , ≤ 4.14.* (semver)
Unaffected: 4.19.267 , ≤ 4.19.* (semver)
Unaffected: 5.4.225 , ≤ 5.4.* (semver)
Unaffected: 5.10.155 , ≤ 5.10.* (semver)
Unaffected: 5.15.79 , ≤ 5.15.* (semver)
Unaffected: 6.0.9 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "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": "2025-05-04T08:47:15.815Z",
        "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": "2025-05-04T08:47:15.815Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.