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CVE-2026-80599— batman-adv: dat: ensure accessible eth_hdr proto field

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存在安全漏洞，该漏洞源于batman-adv dat模块中的batadv_get_vid()函数访问以太网头部的proto字段时未检查数据是否可访问，可能导致越界访问。

CVSS 8.1 · High EPSS 0.42% · P35

Possible ATT&CK Techniques 1 AI

T1587 · Develop Capabilities

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux be1db4f6615b5e6156c807ea8985171c215c2d57< da3677b5ed362742d30ceab31bfafcdc74dc2642 affected
be1db4f6615b5e6156c807ea8985171c215c2d57< 6d3ea37074bb747f745d28138f87745ba9bd97c5 affected
be1db4f6615b5e6156c807ea8985171c215c2d57< 7913935d41f166c367bbf7cc76a79e50044388e8 affected
be1db4f6615b5e6156c807ea8985171c215c2d57< 3c62694c31f043568c3f4784b8d247cc3bea6b4c affected
be1db4f6615b5e6156c807ea8985171c215c2d57< 5836a050d02e9598fa0f71e88dde28b63dfa35e3 affected
be1db4f6615b5e6156c807ea8985171c215c2d57< 8f76277d02176cd739945bba3379448e2e22e799 affected
be1db4f6615b5e6156c807ea8985171c215c2d57< 4407ff3af469356f9641c4a6e7072309bae86bea affected
be1db4f6615b5e6156c807ea8985171c215c2d57< 26560c4a03dc4d607331600c187f59ab2df5f341 affected
… +10 more rows
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I. Basic Information for CVE-2026-80599

Vulnerability Information
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Vulnerability Title
batman-adv: dat: ensure accessible eth_hdr proto field
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: batman-adv: dat: ensure accessible eth_hdr proto field When batadv_get_vid() accesses the proto field of the ethernet header, it is not checking if the data itself is accessible. The caller is responsible for it. But in contrast to other call sites, batadv_dat_get_vid() and its caller didn't make sure this is true. This could have caused an out-of-bounds access.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/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基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于batman-adv dat模块中的batadv_get_vid()函数访问以太网头部的proto字段时未检查数据是否可访问，可能导致越界访问。
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 be1db4f6615b5e6156c807ea8985171c215c2d57 ~ da3677b5ed362742d30ceab31bfafcdc74dc2642 -
Linux Linux 3.13 -

II. Public POCs for CVE-2026-80599

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III. Intelligence Information for CVE-2026-80599

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Patches & Fixes for CVE-2026-80599 (8)

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-2026-80599

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