cbcvebase.
CVE-2022-49865
published 2025-05-01

CVE-2022-49865: In the Linux kernel, the following vulnerability has been resolved: ipv6: addrlabel: fix infoleak when sending struct ifaddrlblmsg to network When copying a…

PriorityP429high7.1CVSS 3.1
AVLACLPRLUINSUCHINAH
EPSS
0.21%
11.6th percentile
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

Affected

22 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.0.10-1 (bookworm)linux 6.0.10-1 (bookworm)
linuxlinux——
linuxlinux>= 2a8cc6c89039e0530a3335954253b76ed0f9339a < 568a47ff756f913e8b374c2af9d22cd2c772c744568a47ff756f913e8b374c2af9d22cd2c772c744
linuxlinux>= 2a8cc6c89039e0530a3335954253b76ed0f9339a < 0f85b7ae7c4b5d7b4bbf7ac653a733c181a8a2bf0f85b7ae7c4b5d7b4bbf7ac653a733c181a8a2bf
linuxlinux>= 2a8cc6c89039e0530a3335954253b76ed0f9339a < 6d26d0587abccb9835382a0b53faa7b9b1cd83e36d26d0587abccb9835382a0b53faa7b9b1cd83e3
linuxlinux>= 2a8cc6c89039e0530a3335954253b76ed0f9339a < 58cd7fdc8c1e6c7873acc08f190069fed88d1c1258cd7fdc8c1e6c7873acc08f190069fed88d1c12
linuxlinux>= 2a8cc6c89039e0530a3335954253b76ed0f9339a < a033b86c7f7621fde31f0364af8986f43b44914fa033b86c7f7621fde31f0364af8986f43b44914f
linuxlinux>= 2a8cc6c89039e0530a3335954253b76ed0f9339a < 2acb2779b147decd300c117683d5a32ce61c75d62acb2779b147decd300c117683d5a32ce61c75d6
linuxlinux>= 2a8cc6c89039e0530a3335954253b76ed0f9339a < 49e92ba5ecd7d72ba369dde2ccff738edd028a4749e92ba5ecd7d72ba369dde2ccff738edd028a47
linuxlinux>= 2a8cc6c89039e0530a3335954253b76ed0f9339a < c23fb2c82267638f9d206cb96bb93e1f93ad7828c23fb2c82267638f9d206cb96bb93e1f93ad7828
linuxlinux_kernel——
linuxlinux_kernel>= 0 < 5.10.158-15.10.158-1
linuxlinux_kernel>= 0 < 6.0.10-16.0.10-1
linuxlinux_kernel>= 0 < 6.0.10-16.0.10-1
linuxlinux_kernel>= 0 < 6.0.10-16.0.10-1
linuxlinux_kernel>= 2.6.25 < 4.9.3344.9.334
linuxlinux_kernel>= 4.10 < 4.14.3004.14.300
linuxlinux_kernel>= 4.15 < 4.19.2674.19.267
linuxlinux_kernel>= 4.20 < 5.4.2255.4.225
linuxlinux_kernel>= 5.11 < 5.15.795.15.79
linuxlinux_kernel>= 5.16 < 6.0.96.0.9
linuxlinux_kernel>= 5.5 < 5.10.1555.10.155

CVSS provenance

nvdv3.17.1HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
osv7.1HIGH
vendor_debian7.1HIGH
vendor_redhat7.1HIGH
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