Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2024-26857— geneve: make sure to pull inner header in geneve_rx()

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞。目前尚无此漏洞的相关信息，请随时关注CNNVD或厂商公告。

CVSS 7.3 · High EPSS 0.61% · P48

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 2d07dc79fe04a43d82a346ced6bbf07bdb523f1b< e431c3227864b5646601c97f5f898d99472f2914 affected
2d07dc79fe04a43d82a346ced6bbf07bdb523f1b< 59d2a4076983303f324557a114cfd5c32e1f6b29 affected
2d07dc79fe04a43d82a346ced6bbf07bdb523f1b< c7137900691f5692fe3de54566ea7b30bb35d66c affected
2d07dc79fe04a43d82a346ced6bbf07bdb523f1b< e77e0b0f2a11735c64b105edaee54d6344faca8a affected
2d07dc79fe04a43d82a346ced6bbf07bdb523f1b< c0b22568a9d8384fd000cc49acb8f74bde40d1b5 affected
2d07dc79fe04a43d82a346ced6bbf07bdb523f1b< 0ece581d2a66e8e488c0d3b3e7b5760dbbfdbdd5 affected
2d07dc79fe04a43d82a346ced6bbf07bdb523f1b< 048e16dee1fc609c1c85072ccd70bfd4b5fef6ca affected
2d07dc79fe04a43d82a346ced6bbf07bdb523f1b< 1ca1ba465e55b9460e4e75dec9fff31e708fec74 affected
… +10 more rows
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2024-26857

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
geneve: make sure to pull inner header in geneve_rx()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: geneve: make sure to pull inner header in geneve_rx() syzbot triggered a bug in geneve_rx() [1] Issue is similar to the one I fixed in commit 8d975c15c0cd ("ip6_tunnel: make sure to pull inner header in __ip6_tnl_rcv()") We have to save skb->network_header in a temporary variable in order to be able to recompute the network_header pointer after a pskb_inet_may_pull() call. pskb_inet_may_pull() makes sure the needed headers are in skb->head. [1] BUG: KMSAN: uninit-value in IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline] BUG: KMSAN: uninit-value in geneve_rx drivers/net/geneve.c:279 [inline] BUG: KMSAN: uninit-value in geneve_udp_encap_recv+0x36f9/0x3c10 drivers/net/geneve.c:391 IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline] geneve_rx drivers/net/geneve.c:279 [inline] geneve_udp_encap_recv+0x36f9/0x3c10 drivers/net/geneve.c:391 udp_queue_rcv_one_skb+0x1d39/0x1f20 net/ipv4/udp.c:2108 udp_queue_rcv_skb+0x6ae/0x6e0 net/ipv4/udp.c:2186 udp_unicast_rcv_skb+0x184/0x4b0 net/ipv4/udp.c:2346 __udp4_lib_rcv+0x1c6b/0x3010 net/ipv4/udp.c:2422 udp_rcv+0x7d/0xa0 net/ipv4/udp.c:2604 ip_protocol_deliver_rcu+0x264/0x1300 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x2b8/0x440 net/ipv4/ip_input.c:233 NF_HOOK include/linux/netfilter.h:314 [inline] ip_local_deliver+0x21f/0x490 net/ipv4/ip_input.c:254 dst_input include/net/dst.h:461 [inline] ip_rcv_finish net/ipv4/ip_input.c:449 [inline] NF_HOOK include/linux/netfilter.h:314 [inline] ip_rcv+0x46f/0x760 net/ipv4/ip_input.c:569 __netif_receive_skb_one_core net/core/dev.c:5534 [inline] __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5648 process_backlog+0x480/0x8b0 net/core/dev.c:5976 __napi_poll+0xe3/0x980 net/core/dev.c:6576 napi_poll net/core/dev.c:6645 [inline] net_rx_action+0x8b8/0x1870 net/core/dev.c:6778 __do_softirq+0x1b7/0x7c5 kernel/softirq.c:553 do_softirq+0x9a/0xf0 kernel/softirq.c:454 __local_bh_enable_ip+0x9b/0xa0 kernel/softirq.c:381 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:820 [inline] __dev_queue_xmit+0x2768/0x51c0 net/core/dev.c:4378 dev_queue_xmit include/linux/netdevice.h:3171 [inline] packet_xmit+0x9c/0x6b0 net/packet/af_packet.c:276 packet_snd net/packet/af_packet.c:3081 [inline] packet_sendmsg+0x8aef/0x9f10 net/packet/af_packet.c:3113 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] __sys_sendto+0x735/0xa10 net/socket.c:2191 __do_sys_sendto net/socket.c:2203 [inline] __se_sys_sendto net/socket.c:2199 [inline] __x64_sys_sendto+0x125/0x1c0 net/socket.c:2199 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Uninit was created at: slab_post_alloc_hook mm/slub.c:3819 [inline] slab_alloc_node mm/slub.c:3860 [inline] kmem_cache_alloc_node+0x5cb/0xbc0 mm/slub.c:3903 kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:560 __alloc_skb+0x352/0x790 net/core/skbuff.c:651 alloc_skb include/linux/skbuff.h:1296 [inline] alloc_skb_with_frags+0xc8/0xbd0 net/core/skbuff.c:6394 sock_alloc_send_pskb+0xa80/0xbf0 net/core/sock.c:2783 packet_alloc_skb net/packet/af_packet.c:2930 [inline] packet_snd net/packet/af_packet.c:3024 [inline] packet_sendmsg+0x70c2/0x9f10 net/packet/af_packet.c:3113 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] __sys_sendto+0x735/0xa10 net/socket.c:2191 __do_sys_sendto net/socket.c:2203 [inline] __se_sys_sendto net/socket.c:2199 [inline] __x64_sys_sendto+0x125/0x1c0 net/socket.c:2199 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞。目前尚无此漏洞的相关信息，请随时关注CNNVD或厂商公告。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 2d07dc79fe04a43d82a346ced6bbf07bdb523f1b ~ e431c3227864b5646601c97f5f898d99472f2914 -
Linux Linux 4.2 -

II. Public POCs for CVE-2024-26857

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2024-26857

请登录查看更多情报信息。

Mailing List Discussions for CVE-2024-26857 (2)

Other References for CVE-2024-26857 (8)

Same Patch Batch · Linux · 2024-04-17 · 100 CVEs total

CVE-2024-26877 9.8 CRITICAL crypto: xilinx - call finalize with bh disabled
CVE-2024-26853 9.8 CRITICAL igc: avoid returning frame twice in XDP_REDIRECT
CVE-2024-26828 9.4 CRITICAL cifs: fix underflow in parse_server_interfaces()
CVE-2024-26856 8.8 HIGH net: sparx5: Fix use after free inside sparx5_del_mact_entry
CVE-2024-26822 8.7 HIGH smb: client: set correct id, uid and cruid for multiuser automounts
CVE-2024-26830 8.4 HIGH i40e: Do not allow untrusted VF to remove administratively set MAC
CVE-2024-26838 7.8 HIGH RDMA/irdma: Fix KASAN issue with tasklet
CVE-2024-26898 7.8 HIGH aoe: fix the potential use-after-free problem in aoecmd_cfg_pkts
CVE-2024-26852 7.8 HIGH net/ipv6: avoid possible UAF in ip6_route_mpath_notify()
CVE-2024-26895 7.8 HIGH wifi: wilc1000: prevent use-after-free on vif when cleaning up all interfaces
CVE-2024-26890 7.8 HIGH Bluetooth: btrtl: fix out of bounds memory access
CVE-2024-26864 7.8 HIGH tcp: Fix refcnt handling in __inet_hash_connect().
CVE-2024-26865 7.8 HIGH rds: tcp: Fix use-after-free of net in reqsk_timer_handler().
CVE-2024-26869 7.8 HIGH f2fs: fix to truncate meta inode pages forcely
CVE-2024-26870 7.8 HIGH NFSv4.2: fix nfs4_listxattr kernel BUG at mm/usercopy.c:102
CVE-2024-26872 7.8 HIGH RDMA/srpt: Do not register event handler until srpt device is fully setup
CVE-2024-26885 7.8 HIGH bpf: Fix DEVMAP_HASH overflow check on 32-bit arches
CVE-2024-26884 7.8 HIGH bpf: Fix hashtab overflow check on 32-bit arches
CVE-2024-26883 7.8 HIGH bpf: Fix stackmap overflow check on 32-bit arches
CVE-2024-26880 7.8 HIGH dm: call the resume method on internal suspend

Showing top 20 of 100 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-26857

No comments yet

Leave a comment