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

Goal: 1000 CNY · Raised: 1000 CNY

100.0%
Buy Us a Coffee

CVE-2026-31682— bridge: br_nd_send: linearize skb before parsing ND options

CVSS 9.1 · Critical EPSS 0.09% · P25
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2026-31682

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
bridge: br_nd_send: linearize skb before parsing ND options
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: bridge: br_nd_send: linearize skb before parsing ND options br_nd_send() parses neighbour discovery options from ns->opt[] and assumes that these options are in the linear part of request. Its callers only guarantee that the ICMPv6 header and target address are available, so the option area can still be non-linear. Parsing ns->opt[] in that case can access data past the linear buffer. Linearize request before option parsing and derive ns from the linear network header.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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bridge中br_nd_send解析ND选项时假设选项在线性区域，可能导致访问线性缓冲区外数据。
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)

Shenlong Deep Dive — AI Deep Analysis

10-question deep dive: root cause, exploitation, mitigation, urgency. Read summary free, full version requires login.

Read summary Full analysis (login)

Affected Products

VendorProductAffected VersionsCPESubscribe
LinuxLinux ed842faeb2bd49256f00485402f3113205f91d30 ~ c68433fd291c9e88c00292095172c62d1997d662 -
LinuxLinux 4.15 -

II. Public POCs for CVE-2026-31682

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-31682

请登录查看更多情报信息。

Same Patch Batch · Linux · 2026-04-25 · 13 CVEs total

CVE-2026-316859.4 CRITICALnetfilter: ip6t_eui64: reject invalid MAC header for all packets
CVE-2026-316837.8 HIGHbatman-adv: avoid OGM aggregation when skb tailroom is insufficient
CVE-2026-316807.8 HIGHnet: ipv6: flowlabel: defer exclusive option free until RCU teardown
CVE-2026-316787.8 HIGHopenvswitch: defer tunnel netdev_put to RCU release
CVE-2026-316757.8 HIGHnet/sched: sch_netem: fix out-of-bounds access in packet corruption
CVE-2026-316737.8 HIGHaf_unix: read UNIX_DIAG_VFS data under unix_state_lock
CVE-2026-316767.5 HIGHrxrpc: only handle RESPONSE during service challenge
CVE-2026-316797.1 HIGHopenvswitch: validate MPLS set/set_masked payload length
CVE-2026-316747.1 HIGHnetfilter: ip6t_rt: reject oversized addrnr in rt_mt6_check()
CVE-2026-31684net: sched: act_csum: validate nested VLAN headers
CVE-2026-31681netfilter: xt_multiport: validate range encoding in checkentry
CVE-2026-31677crypto: af_alg - limit RX SG extraction by receive buffer budget

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-31682

No comments yet

Leave a comment