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

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-80610— net: enetc: fix potential divide-by-zero when num_vsi is zero

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.

在 Linux 内核中，以下漏洞已得到修复： 网络：enetc：修复 num_vsi 为零时可能发生的除零错误 对于 i.MX94 系列，所有独立的 ENETC 控制器均不支持 SR-IOV，因此 的值为零。这导致在 函数中，当在物理功能（PF）和虚拟功能（VFs）之间分配队列（rings）时，会发生除零错误。 在 C 语言中，除以零属于未定义行为。在 ARM64 架构上，UDIV/SDIV 指令在除以零时会静默地返回零，而不会引发异常，因此该问题不会导致可见的崩溃。但依赖这种特定架构的行为是不正确的，并存在跨平台

AI Predicted 4.4 Difficulty: Hard EPSS 0.15% · P5

Possible ATT&CK Techniques 1 AI

T1200 · Hardware Additions

Affected Version Matrix 6

VendorProduct Version RangeStatus
Linux Linux 2d673b0e2f8d75b66aa21e5ca5d95c415dec5be7< cd37bcb67f909a8683cc8c38a63ac7367a7f6161 affected
2d673b0e2f8d75b66aa21e5ca5d95c415dec5be7< 5da65537792b68b6052ffcab65e04c27aea6dfe4 affected
6.19 affected
< 6.19 unaffected
7.1.5≤ 7.1.* unaffected
7.2≤ * unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-80610

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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: enetc: fix potential divide-by-zero when num_vsi is zero
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: enetc: fix potential divide-by-zero when num_vsi is zero For i.MX94 series, all the standalone ENETCs do not support SR-IOV, so pf->caps.num_vsi is zero. This leads to a divide-by-zero in enetc4_default_rings_allocation() when distributing rings among PF and VFs. Division by zero is undefined behavior in C. On ARM64, the UDIV/SDIV instructions silently return zero rather than raising an exception, so the issue does not cause a visible crash. However, relying on this behavior is incorrect and poses a cross-platform compatibility risk. Add an explicit check for num_vsi == 0 and return early after the PF's rings have been configured.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 2d673b0e2f8d75b66aa21e5ca5d95c415dec5be7 ~ cd37bcb67f909a8683cc8c38a63ac7367a7f6161 -
Linux Linux 6.19 -

II. Public POCs for CVE-2026-80610

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

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-80610

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-80610 (2)

Same Patch Batch · Linux · 2026-08-28 · 135 CVEs total

CVE-2026-80634 9.8 CRITICAL netfilter: flowtable: avoid num_encaps underflow on bridge VLAN untag
CVE-2026-80694 9.8 CRITICAL net: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in poll_controller
CVE-2026-80681 9.8 CRITICAL vxlan: re-fetch eth header after route_shortcircuit()
CVE-2026-80674 9.8 CRITICAL ntfs: validate resident attribute lists and harden the validator
CVE-2026-80673 9.8 CRITICAL ntfs: bound the look-ahead attribute-list entry in ntfs_external_attr_find()
CVE-2026-80668 9.8 CRITICAL netfilter: nf_conntrack_expect: use conntrack GC to reap expectations
CVE-2026-80630 9.8 CRITICAL net/sched: sch_fq_codel: Do not call qdisc_tree_reduce_backlog during peek before restorin
CVE-2026-80617 9.8 CRITICAL net: airoha: fix foe_check_time allocation size
CVE-2026-80612 9.8 CRITICAL net: lwtunnel: Drop skb metadata before LWT encapsulation
CVE-2026-80714 9.8 CRITICAL ipvs: do not propagate one-packet flag to synced conns
CVE-2026-80609 9.8 CRITICAL qede: fix out-of-bounds check for cqe->len_list[]
CVE-2026-80600 9.8 CRITICAL batman-adv: dat: acquire ARP hw source only after skb realloc
CVE-2026-80693 9.3 CRITICAL idpf: bound interrupt-vector register fill to the allocated array
CVE-2026-80684 9.3 CRITICAL KVM: s390: pci: Fix NULL dereference on AIBV allocation failure
CVE-2026-80671 9.3 CRITICAL perf sched: Fix register_pid() overflow, strcpy, and BUG_ON
CVE-2026-80603 9.1 CRITICAL netfilter: nf_conntrack_irc: fix parse_dcc() off-by-one OOB read
CVE-2026-80670 9.1 CRITICAL perf tools: Use perf_env__get_cpu_topology() in machine__resolve()
CVE-2026-80721 8.8 HIGH Bluetooth: ISO: ensure no dangling hcon references in iso_conn
CVE-2026-80722 8.8 HIGH wifi: mac80211: validate individual TWT params before driver setup
CVE-2026-80724 8.8 HIGH ptp: vmclock: prevent read-only mappings from becoming writable

Showing top 20 of 135 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-80610

No comments yet

Leave a comment