CVE-2024-26633
published 2024-03-18CVE-2024-26633: In the Linux kernel, the following vulnerability has been resolved: ip6_tunnel: fix NEXTHDR_FRAGMENT handling in ip6_tnl_parse_tlv_enc_lim() syzbot pointed out…
medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
In the Linux kernel, the following vulnerability has been resolved:
ip6_tunnel: fix NEXTHDR_FRAGMENT handling in ip6_tnl_parse_tlv_enc_lim()
syzbot pointed out [1] that NEXTHDR_FRAGMENT handling is broken.
Reading frag_off can only be done if we pulled enough bytes
to skb->head. Currently we might access garbage.
[1]
BUG: KMSAN: uninit-value in ip6_tnl_parse_tlv_enc_lim+0x94f/0xbb0
ip6_tnl_parse_tlv_enc_lim+0x94f/0xbb0
ipxip6_tnl_xmit net/ipv6/ip6_tunnel.c:1326 [inline]
ip6_tnl_start_xmit+0xab2/0x1a70 net/ipv6/ip6_tunnel.c:1432
__netdev_start_xmit include/linux/netdevice.h:4940 [inline]
netdev_start_xmit include/linux/netdevice.h:4954 [inline]
xmit_one net/core/dev.c:3548 [inline]
dev_hard_start_xmit+0x247/0xa10 net/core/dev.c:3564
__dev_queue_xmit+0x33b8/0x5130 net/core/dev.c:4349
dev_queue_xmit include/linux/netdevice.h:3134 [inline]
neigh_connected_output+0x569/0x660 net/core/neighbour.c:1592
neigh_output include/net/neighbour.h:542 [inline]
ip6_finish_output2+0x23a9/0x2b30 net/ipv6/ip6_output.c:137
ip6_finish_output+0x855/0x12b0 net/ipv6/ip6_output.c:222
NF_HOOK_COND include/linux/netfilter.h:303 [inline]
ip6_output+0x323/0x610 net/ipv6/ip6_output.c:243
dst_output include/net/dst.h:451 [inline]
ip6_local_out+0xe9/0x140 net/ipv6/output_core.c:155
ip6_send_skb net/ipv6/ip6_output.c:1952 [inline]
ip6_push_pending_frames+0x1f9/0x560 net/ipv6/ip6_output.c:1972
rawv6_push_pending_frames+0xbe8/0xdf0 net/ipv6/raw.c:582
rawv6_sendmsg+0x2b66/0x2e70 net/ipv6/raw.c:920
inet_sendmsg+0x105/0x190 net/ipv4/af_inet.c:847
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
____sys_sendmsg+0x9c2/0xd60 net/socket.c:2584
___sys_sendmsg+0x28d/0x3c0 net/socket.c:2638
__sys_sendmsg net/socket.c:2667 [inline]
__do_sys_sendmsg net/socket.c:2676 [inline]
__se_sys_sendmsg net/socket.c:2674 [inline]
__x64_sys_sendmsg+0x307/0x490 net/socket.c:2674
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83
entry
Affected
41 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | linux | < linux 6.1.76-1 (bookworm) | linux 6.1.76-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | >= 3.10.106 < 3.11 | 3.11 |
| linux | linux | >= 3.12.71 < 3.13 | 3.13 |
| linux | linux | >= 3.16.42 < 3.17 | 3.17 |
| linux | linux | >= 3.18.49 < 3.19 | 3.19 |
| linux | linux | >= 3.2.87 < 3.3 | 3.3 |
| linux | linux | >= 4.4.50 < 4.5 | 4.5 |
| linux | linux | >= 4.9.11 < 4.10 | 4.10 |
| linux | linux | >= fbfa743a9d2a0ffa24251764f10afc13eb21e739 < 135414f300c5db995e2a2f3bf0f455de9d014aee | 135414f300c5db995e2a2f3bf0f455de9d014aee |
| linux | linux | >= fbfa743a9d2a0ffa24251764f10afc13eb21e739 < 3f15ba3dc14e6ee002ea01b4faddc3d49200377c | 3f15ba3dc14e6ee002ea01b4faddc3d49200377c |
| linux | linux | >= fbfa743a9d2a0ffa24251764f10afc13eb21e739 < da23bd709b46168f7dfc36055801011222b076cd | da23bd709b46168f7dfc36055801011222b076cd |
| linux | linux | >= fbfa743a9d2a0ffa24251764f10afc13eb21e739 < 4329426cf6b8e22b798db2331c7ef1dd2a9c748d | 4329426cf6b8e22b798db2331c7ef1dd2a9c748d |
| linux | linux | >= fbfa743a9d2a0ffa24251764f10afc13eb21e739 < 62a1fedeb14c7ac0947ef33fadbabd35ed2400a2 | 62a1fedeb14c7ac0947ef33fadbabd35ed2400a2 |
| linux | linux | >= fbfa743a9d2a0ffa24251764f10afc13eb21e739 < 687c5d52fe53e602e76826dbd4d7af412747e183 | 687c5d52fe53e602e76826dbd4d7af412747e183 |
| linux | linux | >= fbfa743a9d2a0ffa24251764f10afc13eb21e739 < ba8d904c274268b18ef3dc11d3ca7b24a96cb087 | ba8d904c274268b18ef3dc11d3ca7b24a96cb087 |
| linux | linux | >= fbfa743a9d2a0ffa24251764f10afc13eb21e739 < d375b98e0248980681e5e56b712026174d617198 | d375b98e0248980681e5e56b712026174d617198 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv8.1HIGH