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

Goal: 1000 CNY · Raised: 1359 CNY

100%

Buy Us a Coffee

CVE-2025-22055— net: fix geneve_opt length integer overflow

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，该漏洞源于geneve_opt长度整数溢出，可能导致堆越界读取。

CVSS 7.1 · High EPSS 0.25% · P17 Updated Oct 15, 2026

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 18

Vendor	Product	Version Range	Status
Linux	Linux	`0ed5269f9e41f495c8e9020c85f5e1644c1afc57< a2cb85f989e2074e2f392e00188c438cab3de088`	affected
		`0ed5269f9e41f495c8e9020c85f5e1644c1afc57< b4513ad0f391871d3feee8ddf535609a3aabeeac`	affected
		`0ed5269f9e41f495c8e9020c85f5e1644c1afc57< 21748669c5825761cbbf47cbeeb01387ddccc8cb`	affected
		`0ed5269f9e41f495c8e9020c85f5e1644c1afc57< 5a2976cc4d9c36ff58a0f10e35ce4283cbaa9c0e`	affected
		`0ed5269f9e41f495c8e9020c85f5e1644c1afc57< 2952776c69a1a551649ed770bf22e3f691f6ec65`	affected
		`0ed5269f9e41f495c8e9020c85f5e1644c1afc57< 738ae5712215fe9181587d582b23333f02c62ca6`	affected
		`0ed5269f9e41f495c8e9020c85f5e1644c1afc57< 4d606069bdd3c76f8ab1f06796c97ef7f4746807`	affected
		`0ed5269f9e41f495c8e9020c85f5e1644c1afc57< b27055a08ad4b415dcf15b63034f9cb236f7fb40`	affected
… +10 more rows

Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2025-22055

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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

net: fix geneve_opt length integer overflow

Source: CVE Program / CVE List V5

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: net: fix geneve_opt length integer overflow struct geneve_opt uses 5 bit length for each single option, which means every vary size option should be smaller than 128 bytes. However, all current related Netlink policies cannot promise this length condition and the attacker can exploit a exact 128-byte size option to *fake* a zero length option and confuse the parsing logic, further achieve heap out-of-bounds read. One example crash log is like below: [ 3.905425] ================================================================== [ 3.905925] BUG: KASAN: slab-out-of-bounds in nla_put+0xa9/0xe0 [ 3.906255] Read of size 124 at addr ffff888005f291cc by task poc/177 [ 3.906646] [ 3.906775] CPU: 0 PID: 177 Comm: poc-oob-read Not tainted 6.1.132 #1 [ 3.907131] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014 [ 3.907784] Call Trace: [ 3.907925] <TASK> [ 3.908048] dump_stack_lvl+0x44/0x5c [ 3.908258] print_report+0x184/0x4be [ 3.909151] kasan_report+0xc5/0x100 [ 3.909539] kasan_check_range+0xf3/0x1a0 [ 3.909794] memcpy+0x1f/0x60 [ 3.909968] nla_put+0xa9/0xe0 [ 3.910147] tunnel_key_dump+0x945/0xba0 [ 3.911536] tcf_action_dump_1+0x1c1/0x340 [ 3.912436] tcf_action_dump+0x101/0x180 [ 3.912689] tcf_exts_dump+0x164/0x1e0 [ 3.912905] fw_dump+0x18b/0x2d0 [ 3.913483] tcf_fill_node+0x2ee/0x460 [ 3.914778] tfilter_notify+0xf4/0x180 [ 3.915208] tc_new_tfilter+0xd51/0x10d0 [ 3.918615] rtnetlink_rcv_msg+0x4a2/0x560 [ 3.919118] netlink_rcv_skb+0xcd/0x200 [ 3.919787] netlink_unicast+0x395/0x530 [ 3.921032] netlink_sendmsg+0x3d0/0x6d0 [ 3.921987] __sock_sendmsg+0x99/0xa0 [ 3.922220] __sys_sendto+0x1b7/0x240 [ 3.922682] __x64_sys_sendto+0x72/0x90 [ 3.922906] do_syscall_64+0x5e/0x90 [ 3.923814] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 3.924122] RIP: 0033:0x7e83eab84407 [ 3.924331] Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 faf [ 3.925330] RSP: 002b:00007ffff505e370 EFLAGS: 00000202 ORIG_RAX: 000000000000002c [ 3.925752] RAX: ffffffffffffffda RBX: 00007e83eaafa740 RCX: 00007e83eab84407 [ 3.926173] RDX: 00000000000001a8 RSI: 00007ffff505e3c0 RDI: 0000000000000003 [ 3.926587] RBP: 00007ffff505f460 R08: 00007e83eace1000 R09: 000000000000000c [ 3.926977] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffff505f3c0 [ 3.927367] R13: 00007ffff505f5c8 R14: 00007e83ead1b000 R15: 00005d4fbbe6dcb8 Fix these issues by enforing correct length condition in related policies.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

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，该漏洞源于geneve_opt长度整数溢出，可能导致堆越界读取。

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	0ed5269f9e41f495c8e9020c85f5e1644c1afc57 ~ a2cb85f989e2074e2f392e00188c438cab3de088	-
Linux	Linux	4.19	-

II. Public POCs for CVE-2025-22055

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2025-22055

请登录查看更多情报信息。

Other References for CVE-2025-22055 (6)

https://www.cve.org/CVERecord?id=CVE-2025-22055

Same Patch Batch · Linux · 2025-04-16 · 127 CVEs total

CVE-2025-22021	10.0 CRITICAL	netfilter: socket: Lookup orig tuple for IPv6 SNAT
CVE-2025-22077	9.8 CRITICAL	Revert "smb: client: fix TCP timers deadlock after rmmod"
CVE-2025-22110	9.8 CRITICAL	netfilter: nfnetlink_queue: Initialize ctx to avoid memory allocation error
CVE-2025-22088	9.8 CRITICAL	RDMA/erdma: Prevent use-after-free in erdma_accept_newconn()
CVE-2025-22040	8.8 HIGH	ksmbd: fix session use-after-free in multichannel connection
CVE-2025-22041	8.8 HIGH	ksmbd: fix use-after-free in ksmbd_sessions_deregister()
CVE-2025-22074	8.8 HIGH	ksmbd: fix r_count dec/increment mismatch
CVE-2025-22118	8.8 HIGH	ice: validate queue quanta parameters to prevent OOB access
CVE-2025-22039	8.8 HIGH	ksmbd: fix overflow in dacloffset bounds check
CVE-2025-22086	8.8 HIGH	RDMA/mlx5: Fix mlx5_poll_one() cur_qp update flow
CVE-2024-58096	8.8 HIGH	wifi: ath11k: add srng->lock for ath11k_hal_srng_* in monitor mode
CVE-2025-23133	8.8 HIGH	wifi: ath11k: update channel list in reg notifier instead reg worker
CVE-2025-22117	8.7 HIGH	ice: fix using untrusted value of pkt_len in ice_vc_fdir_parse_raw()
CVE-2025-22108	8.6 HIGH	bnxt_en: Mask the bd_cnt field in the TX BD properly
CVE-2025-22121	8.4 HIGH	ext4: fix out-of-bound read in ext4_xattr_inode_dec_ref_all()
CVE-2025-22080	8.4 HIGH	fs/ntfs3: Prevent integer overflow in hdr_first_de()
CVE-2025-22038	8.3 HIGH	ksmbd: validate zero num_subauth before sub_auth is accessed
CVE-2025-22042	8.1 HIGH	ksmbd: add bounds check for create lease context
CVE-2025-22043	8.1 HIGH	ksmbd: add bounds check for durable handle context
CVE-2025-22047	7.8 HIGH	x86/microcode/AMD: Fix __apply_microcode_amd()'s return value

Showing top 20 of 127 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Linux

Same vendor: Linux