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

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-72061— net: sit: require CAP_NET_ADMIN in the device netns for changelink

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基金会开源的一个操作系统内核。 Linux kernel 3.11版本存在安全漏洞，该漏洞源于sit设备changelink操作未在隧道链接网络命名空间中正确验证CAP_NET_ADMIN权限，仅检查了设备网络命名空间的权限，可能导致攻击者重写位于其他网络命名空间中的隧道。

CVSS 8.8 · High EPSS 0.18% · P7

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 5e6700b3bf98fe98d630bf9c939ad4c85ce95592< cb41b308e9d867725d965b291dd085028e36a480 affected
5e6700b3bf98fe98d630bf9c939ad4c85ce95592< c5a0ae895432596b2f464172da8218e2d84e2932 affected
5e6700b3bf98fe98d630bf9c939ad4c85ce95592< 7d139dec96691cde96cb40ed293e2d13d994fb4f affected
5e6700b3bf98fe98d630bf9c939ad4c85ce95592< 388ccffbd2e7e5e4271f291085a7451865705305 affected
5e6700b3bf98fe98d630bf9c939ad4c85ce95592< c0ea1aedb37bb979e864ed7787975434bbd9db73 affected
5e6700b3bf98fe98d630bf9c939ad4c85ce95592< 3118e97dae533fb45964b87bbed1801afcff7c65 affected
5e6700b3bf98fe98d630bf9c939ad4c85ce95592< 99ae3248b33df94201915d9c32e7470cdf08cfcd affected
5e6700b3bf98fe98d630bf9c939ad4c85ce95592< 27ccb68e7cccead5d8c611665a45d23032d468b3 affected
… +10 more rows
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-72061

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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: sit: require CAP_NET_ADMIN in the device netns for changelink
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: sit: require CAP_NET_ADMIN in the device netns for changelink ipip6_changelink() operates on at most two netns, dev_net(dev) and the tunnel link netns t->net. They differ once the device is created in or moved to a netns other than the one the request runs in. The rtnl changelink path checks CAP_NET_ADMIN only against dev_net(dev), so a caller privileged there but not in t->net can rewrite a tunnel that lives in t->net. Gate ipip6_changelink() on rtnl_dev_link_net_capable() at its top, before any attribute is parsed. sit was the one tunnel type not covered by the recent series that added this check to the other changelink() handlers.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/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基金会开源的一个操作系统内核。 Linux kernel 3.11版本存在安全漏洞，该漏洞源于sit设备changelink操作未在隧道链接网络命名空间中正确验证CAP_NET_ADMIN权限，仅检查了设备网络命名空间的权限，可能导致攻击者重写位于其他网络命名空间中的隧道。
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 5e6700b3bf98fe98d630bf9c939ad4c85ce95592 ~ cb41b308e9d867725d965b291dd085028e36a480 -
Linux Linux 3.11 -

II. Public POCs for CVE-2026-72061

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

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-72061

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-72061 (8)

Same Patch Batch · Linux · 2026-08-15 · 845 CVEs total

CVE-2026-74475 10.0 CRITICAL vxlan: use neigh_ha_snapshot() in route_shortcircuit()
CVE-2026-72421 10.0 CRITICAL ipv4: fib: Don't ignore error route in local/main tables.
CVE-2026-74279 10.0 CRITICAL crypto: cavium/cpt - fix DMA cleanup using wrong loop index
CVE-2026-74280 10.0 CRITICAL crypto: marvell/octeontx - fix DMA cleanup using wrong loop index
CVE-2026-74309 10.0 CRITICAL vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
CVE-2026-72408 10.0 CRITICAL geneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint
CVE-2026-72407 10.0 CRITICAL geneve: validate inner network offset in geneve_gro_complete()
CVE-2026-72493 9.9 CRITICAL net: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-74433 9.8 CRITICAL rxrpc: Fix UAF in rxgk_issue_challenge()
CVE-2026-72317 9.8 CRITICAL SUNRPC: pin upper rpc_clnt across the TLS connect_worker
CVE-2026-72208 9.8 CRITICAL ntfs: add bounds check before accessing EA entries
CVE-2026-72065 9.8 CRITICAL net: mana: Validate the packet length reported by the NIC
CVE-2026-72064 9.8 CRITICAL net: mana: Sync page pool RX frags for CPU
CVE-2026-74427 9.8 CRITICAL afs: Fix netns teardown to cancel the preallocation charger
CVE-2026-72137 9.8 CRITICAL xfrm: nat_keepalive: avoid double free on send error
CVE-2026-72429 9.8 CRITICAL ipv6: ioam: fix type confusion of dst_entry
CVE-2026-74428 9.8 CRITICAL rxrpc: Fix double unlock in rxrpc_recvmsg()
CVE-2026-72139 9.8 CRITICAL tcp: defer md5sig_info kfree past RCU grace period in tcp_connect
CVE-2026-72436 9.8 CRITICAL netfilter: ipset: Don't use test_bit() in lockless RCU readers in hash types
CVE-2026-72046 9.8 CRITICAL gve: fix header buffer corruption with header-split and HW-GRO

Showing top 20 of 845 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-72061

No comments yet

Leave a comment