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CVE-2026-72232— batman-adv: ensure minimal ethernet header on TX

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在传输时未确保最小以太网头长度，在batadv_interface_tx()中假设至少ETH_HLEN字节可用，可能读取可用缓冲区之外。

CVSS 7.8 · High EPSS 0.16% · P5

Possible ATT&CK Techniques 1 AI

T1055 · Process Injection

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux c6c8fea29769d998d94fcec9b9f14d4b52b349d3< 58799078afebd5115e052bf69ad6697f9759dd6f affected
c6c8fea29769d998d94fcec9b9f14d4b52b349d3< 38cd10b0aeec755d89f78722a2b83f4088ff0cb0 affected
c6c8fea29769d998d94fcec9b9f14d4b52b349d3< 811fea37620f2097955d95ce81cfdba03fd30f1b affected
c6c8fea29769d998d94fcec9b9f14d4b52b349d3< e6640923afee619d9fa82b07394dc9498e202304 affected
c6c8fea29769d998d94fcec9b9f14d4b52b349d3< 6b4f521e01257387906f8b969ad3450d8208d4e2 affected
c6c8fea29769d998d94fcec9b9f14d4b52b349d3< 9e16b6751a8206de0b865d99bb02771e6751d12d affected
c6c8fea29769d998d94fcec9b9f14d4b52b349d3< dbeb4145d9778f922f459935da9a027750765a69 affected
c6c8fea29769d998d94fcec9b9f14d4b52b349d3< 49df66b7993c80b80c7eb9a84ba5b3410c8296a0 affected
… +10 more rows
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I. Basic Information for CVE-2026-72232

Vulnerability Information
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Vulnerability Title
batman-adv: ensure minimal ethernet header on TX
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: batman-adv: ensure minimal ethernet header on TX As documented in commit 8bd67ebb50c0 ("net: bridge: xmit: make sure we have at least eth header len bytes"), it is possible by for a local user with eBPF TC hook access to attach a tc filter which truncates the packet and redirects to an batadv interface. But the code assumes that at least ETH_HLEN bytes are available and thus might read outside of the available buffer. The batadv_interface_tx() must therefore always check itself if enough data is available for the ethernet header and don't rely on min_header_len.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/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存在安全漏洞，该漏洞源于batman-adv在传输时未确保最小以太网头长度，在batadv_interface_tx()中假设至少ETH_HLEN字节可用，可能读取可用缓冲区之外。
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 c6c8fea29769d998d94fcec9b9f14d4b52b349d3 ~ 58799078afebd5115e052bf69ad6697f9759dd6f -
Linux Linux 2.6.38 -

II. Public POCs for CVE-2026-72232

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III. Intelligence Information for CVE-2026-72232

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Patches & Fixes for CVE-2026-72232 (7)

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

CVE-2026-72407 10.0 CRITICAL geneve: validate inner network offset in geneve_gro_complete()
CVE-2026-72408 10.0 CRITICAL geneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint
CVE-2026-74475 10.0 CRITICAL vxlan: use neigh_ha_snapshot() in route_shortcircuit()
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-2026-72421 10.0 CRITICAL ipv4: fib: Don't ignore error route in local/main tables.
CVE-2026-74309 10.0 CRITICAL vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
CVE-2026-72493 9.9 CRITICAL net: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-74376 9.8 CRITICAL md/raid10: reset read_slot when reusing r10bio for discard
CVE-2026-74433 9.8 CRITICAL rxrpc: Fix UAF in rxgk_issue_challenge()
CVE-2026-74434 9.8 CRITICAL rxrpc: Don't move a peeked OOB message onto the pending queue
CVE-2026-72191 9.8 CRITICAL ntfs3: validate split-point offset in indx_insert_into_buffer
CVE-2026-72299 9.8 CRITICAL tipc: restrict socket queue dumps in enqueue tracepoints
CVE-2026-72398 9.8 CRITICAL sctp: add INIT verification after cookie unpacking
CVE-2026-74384 9.8 CRITICAL nvme-multipath: fix flex array size in struct nvme_ns_head
CVE-2026-72442 9.8 CRITICAL netfilter: flowtable: fix and simplify IP6IP6 tunnel handling
CVE-2026-74436 9.8 CRITICAL rxrpc: serialize kernel accept preallocation with socket teardown
CVE-2026-74545 9.8 CRITICAL rtase: fix double free of multi-frag skb on DMA map failure
CVE-2026-72046 9.8 CRITICAL gve: fix header buffer corruption with header-split and HW-GRO
CVE-2026-72473 9.8 CRITICAL xprtrdma: Decouple req recycling from RPC completion

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-2026-72232

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