CVE-2024-26641
"Linux kernel-ip6_tunnel-uninitialized-memory-access vulnerability"
Description
In the Linux kernel, the following vulnerability has been resolved: ip6_tunnel: make sure to pull inner header in __ip6_tnl_rcv() syzbot found __ip6_tnl_rcv() could access unitiliazed data [1]. Call pskb_inet_may_pull() to fix this, and initialize ipv6h variable after this call as it can change skb->head. [1] BUG: KMSAN: uninit-value in __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline] BUG: KMSAN: uninit-value in INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline] BUG: KMSAN: uninit-value in IP6_ECN_decapsulate+0x7df/0x1e50 include/net/inet_ecn.h:321 __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline] INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline] IP6_ECN_decapsulate+0x7df/0x1e50 include/net/inet_ecn.h:321 ip6ip6_dscp_ecn_decapsulate+0x178/0x1b0 net/ipv6/ip6_tunnel.c:727 __ip6_tnl_rcv+0xd4e/0x1590 net/ipv6/ip6_tunnel.c:845 ip6_tnl_rcv+0xce/0x100 net/ipv6/ip6_tunnel.c:888 gre_rcv+0x143f/0x1870 ip6_protocol_deliver_rcu+0xda6/0x2a60 net/ipv6/ip6_input.c:438 ip6_input_finish net/ipv6/ip6_input.c:483 [inline] NF_HOOK include/linux/netfilter.h:314 [inline] ip6_input+0x15d/0x430 net/ipv6/ip6_input.c:492 ip6_mc_input+0xa7e/0xc80 net/ipv6/ip6_input.c:586 dst_input include/net/dst.h:461 [inline] ip6_rcv_finish+0x5db/0x870 net/ipv6/ip6_input.c:79 NF_HOOK include/linux/netfilter.h:314 [inline] ipv6_rcv+0xda/0x390 net/ipv6/ip6_input.c:310 __netif_receive_skb_one_core net/core/dev.c:5532 [inline] __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5646 netif_receive_skb_internal net/core/dev.c:5732 [inline] netif_receive_skb+0x58/0x660 net/core/dev.c:5791 tun_rx_batched+0x3ee/0x980 drivers/net/tun.c:1555 tun_get_user+0x53af/0x66d0 drivers/net/tun.c:2002 tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048 call_write_iter include/linux/fs.h:2084 [inline] new_sync_write fs/read_write.c:497 [inline] vfs_write+0x786/0x1200 fs/read_write.c:590 ksys_write+0x20f/0x4c0 fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write fs/read_write.c:652 [inline] __x64_sys_write+0x93/0xd0 fs/read_write.c:652 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x6d/0x140 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Uninit was created at: slab_post_alloc_hook+0x129/0xa70 mm/slab.h:768 slab_alloc_node mm/slub.c:3478 [inline] kmem_cache_alloc_node+0x5e9/0xb10 mm/slub.c:3523 kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:560 __alloc_skb+0x318/0x740 net/core/skbuff.c:651 alloc_skb include/linux/skbuff.h:1286 [inline] alloc_skb_with_frags+0xc8/0xbd0 net/core/skbuff.c:6334 sock_alloc_send_pskb+0xa80/0xbf0 net/core/sock.c:2787 tun_alloc_skb drivers/net/tun.c:1531 [inline] tun_get_user+0x1e8a/0x66d0 drivers/net/tun.c:1846 tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048 call_write_iter include/linux/fs.h:2084 [inline] new_sync_write fs/read_write.c:497 [inline] vfs_write+0x786/0x1200 fs/read_write.c:590 ksys_write+0x20f/0x4c0 fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write fs/read_write.c:652 [inline] __x64_sys_write+0x93/0xd0 fs/read_write.c:652 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x6d/0x140 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b CPU: 0 PID: 5034 Comm: syz-executor331 Not tainted 6.7.0-syzkaller-00562-g9f8413c4a66f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
INFO
Published Date :
March 18, 2024, 11:15 a.m.
Last Modified :
March 10, 2025, 4:58 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
Public PoC/Exploit Available at Github
CVE-2024-26641 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2024-26641
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-26641.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Ini adalah repository kumpulan CVE v.5
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Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2024-26641 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-26641 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Mar. 10, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-908 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 from (excluding) 5.15.149 *cpe:2.3:o:linux:linux_kernel:6.8:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 from (excluding) 6.7.4 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 from (excluding) 6.6.16 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 from (excluding) 6.1.77 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.7 from (excluding) 5.10.210 Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:* *cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:a800_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:a800:*:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:c800_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:c800:*:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:a900_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:a900:*:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:a9500_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:a9500:*:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:c190_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:c190:*:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:a150_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:a150:*:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:a220_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:a220:*:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:fas2720_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:fas2720:*:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:fas2750_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:fas2750:*:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:netapp:fas2820_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:fas2820:*:*:*:*:*:*:*:* Added Reference Type CVE: https://git.kernel.org/stable/c/350a6640fac4b53564ec20aa3f4a0922cb0ba5e6 Types: Mailing List, Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/350a6640fac4b53564ec20aa3f4a0922cb0ba5e6 Types: Mailing List, Patch Added Reference Type CVE: https://git.kernel.org/stable/c/8d975c15c0cd744000ca386247432d57b21f9df0 Types: Mailing List, Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/8d975c15c0cd744000ca386247432d57b21f9df0 Types: Mailing List, Patch Added Reference Type CVE: https://git.kernel.org/stable/c/a9bc32879a08f23cdb80a48c738017e39aea1080 Types: Mailing List, Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/a9bc32879a08f23cdb80a48c738017e39aea1080 Types: Mailing List, Patch Added Reference Type CVE: https://git.kernel.org/stable/c/af6b5c50d47ab43e5272ad61935d0ed2e264d3f0 Types: Mailing List, Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/af6b5c50d47ab43e5272ad61935d0ed2e264d3f0 Types: Mailing List, Patch Added Reference Type CVE: https://git.kernel.org/stable/c/c835df3bcc14858ae9b27315dd7de76370b94f3a Types: Mailing List, Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/c835df3bcc14858ae9b27315dd7de76370b94f3a Types: Mailing List, Patch Added Reference Type CVE: https://git.kernel.org/stable/c/d54e4da98bbfa8c257bdca94c49652d81d18a4d8 Types: Mailing List, Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/d54e4da98bbfa8c257bdca94c49652d81d18a4d8 Types: Mailing List, Patch Added Reference Type CVE: https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html Types: Mailing List Added Reference Type CVE: https://security.netapp.com/advisory/ntap-20241108-0008/ Types: Third Party Advisory -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/350a6640fac4b53564ec20aa3f4a0922cb0ba5e6 Added Reference https://git.kernel.org/stable/c/8d975c15c0cd744000ca386247432d57b21f9df0 Added Reference https://git.kernel.org/stable/c/a9bc32879a08f23cdb80a48c738017e39aea1080 Added Reference https://git.kernel.org/stable/c/af6b5c50d47ab43e5272ad61935d0ed2e264d3f0 Added Reference https://git.kernel.org/stable/c/c835df3bcc14858ae9b27315dd7de76370b94f3a Added Reference https://git.kernel.org/stable/c/d54e4da98bbfa8c257bdca94c49652d81d18a4d8 Added Reference https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html Added Reference https://security.netapp.com/advisory/ntap-20241108-0008/ -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Nov. 05, 2024
Action Type Old Value New Value Removed Reference kernel.org https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 25, 2024
Action Type Old Value New Value Added Reference kernel.org https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html [No types assigned] -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 29, 2024
Action Type Old Value New Value -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 14, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Mar. 18, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: ip6_tunnel: make sure to pull inner header in __ip6_tnl_rcv() syzbot found __ip6_tnl_rcv() could access unitiliazed data [1]. Call pskb_inet_may_pull() to fix this, and initialize ipv6h variable after this call as it can change skb->head. [1] BUG: KMSAN: uninit-value in __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline] BUG: KMSAN: uninit-value in INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline] BUG: KMSAN: uninit-value in IP6_ECN_decapsulate+0x7df/0x1e50 include/net/inet_ecn.h:321 __INET_ECN_decapsulate include/net/inet_ecn.h:253 [inline] INET_ECN_decapsulate include/net/inet_ecn.h:275 [inline] IP6_ECN_decapsulate+0x7df/0x1e50 include/net/inet_ecn.h:321 ip6ip6_dscp_ecn_decapsulate+0x178/0x1b0 net/ipv6/ip6_tunnel.c:727 __ip6_tnl_rcv+0xd4e/0x1590 net/ipv6/ip6_tunnel.c:845 ip6_tnl_rcv+0xce/0x100 net/ipv6/ip6_tunnel.c:888 gre_rcv+0x143f/0x1870 ip6_protocol_deliver_rcu+0xda6/0x2a60 net/ipv6/ip6_input.c:438 ip6_input_finish net/ipv6/ip6_input.c:483 [inline] NF_HOOK include/linux/netfilter.h:314 [inline] ip6_input+0x15d/0x430 net/ipv6/ip6_input.c:492 ip6_mc_input+0xa7e/0xc80 net/ipv6/ip6_input.c:586 dst_input include/net/dst.h:461 [inline] ip6_rcv_finish+0x5db/0x870 net/ipv6/ip6_input.c:79 NF_HOOK include/linux/netfilter.h:314 [inline] ipv6_rcv+0xda/0x390 net/ipv6/ip6_input.c:310 __netif_receive_skb_one_core net/core/dev.c:5532 [inline] __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5646 netif_receive_skb_internal net/core/dev.c:5732 [inline] netif_receive_skb+0x58/0x660 net/core/dev.c:5791 tun_rx_batched+0x3ee/0x980 drivers/net/tun.c:1555 tun_get_user+0x53af/0x66d0 drivers/net/tun.c:2002 tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048 call_write_iter include/linux/fs.h:2084 [inline] new_sync_write fs/read_write.c:497 [inline] vfs_write+0x786/0x1200 fs/read_write.c:590 ksys_write+0x20f/0x4c0 fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write fs/read_write.c:652 [inline] __x64_sys_write+0x93/0xd0 fs/read_write.c:652 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x6d/0x140 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Uninit was created at: slab_post_alloc_hook+0x129/0xa70 mm/slab.h:768 slab_alloc_node mm/slub.c:3478 [inline] kmem_cache_alloc_node+0x5e9/0xb10 mm/slub.c:3523 kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:560 __alloc_skb+0x318/0x740 net/core/skbuff.c:651 alloc_skb include/linux/skbuff.h:1286 [inline] alloc_skb_with_frags+0xc8/0xbd0 net/core/skbuff.c:6334 sock_alloc_send_pskb+0xa80/0xbf0 net/core/sock.c:2787 tun_alloc_skb drivers/net/tun.c:1531 [inline] tun_get_user+0x1e8a/0x66d0 drivers/net/tun.c:1846 tun_chr_write_iter+0x3af/0x5d0 drivers/net/tun.c:2048 call_write_iter include/linux/fs.h:2084 [inline] new_sync_write fs/read_write.c:497 [inline] vfs_write+0x786/0x1200 fs/read_write.c:590 ksys_write+0x20f/0x4c0 fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write fs/read_write.c:652 [inline] __x64_sys_write+0x93/0xd0 fs/read_write.c:652 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x6d/0x140 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b CPU: 0 PID: 5034 Comm: syz-executor331 Not tainted 6.7.0-syzkaller-00562-g9f8413c4a66f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Added Reference kernel.org https://git.kernel.org/stable/c/a9bc32879a08f23cdb80a48c738017e39aea1080 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/af6b5c50d47ab43e5272ad61935d0ed2e264d3f0 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/d54e4da98bbfa8c257bdca94c49652d81d18a4d8 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/350a6640fac4b53564ec20aa3f4a0922cb0ba5e6 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/c835df3bcc14858ae9b27315dd7de76370b94f3a [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/8d975c15c0cd744000ca386247432d57b21f9df0 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-26641 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-26641
weaknesses.