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CVE-2026-72228— batman-adv: frag: fix primary_if leak on failed linearization

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模块在处理skb的frag_list时，线性化失败后未正确释放primary_if引用，可能导致资源泄漏。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.21% · P11

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 28

VendorProduct Version RangeStatus
Linux Linux a6a73781b460c4fe2cf2c40400ac91dfddb353fa< e59b1960f71521ce4eb4397c4e82f5285601ab57 affected
8f37aad74f46dd5d8b95fac17804b75f77931fa9< c1b28432fd6345e0d2308f39c507ed5750c265d2 affected
a063f2fba3fa633a599253b62561051ac185fa99< 4f3bf293f7662500142234ae6f23725953690bc9 affected
a063f2fba3fa633a599253b62561051ac185fa99< d2148aeee93197ccf821114489775132f28eebf5 affected
a063f2fba3fa633a599253b62561051ac185fa99< db3c700826e8126fbdaa83468a9c4ee4ee65319f affected
a063f2fba3fa633a599253b62561051ac185fa99< a90f4fff9025371bce5371daa610af957de8dd6a affected
a063f2fba3fa633a599253b62561051ac185fa99< 777a88256d6f70672116e53400659cc417e1feaa affected
a063f2fba3fa633a599253b62561051ac185fa99< 353d2c1d5492e53ae34f490a84494124dc3d3531 affected
… +20 more rows
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I. Basic Information for CVE-2026-72228

Vulnerability Information
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Vulnerability Title
batman-adv: frag: fix primary_if leak on failed linearization
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: batman-adv: frag: fix primary_if leak on failed linearization If the skb has a frag_list, it must be linearized before it can be split using skb_split(). But when this step failed, it must not only free the skb but also take care of the reference to the already found primary_if.
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
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模块在处理skb的frag_list时，线性化失败后未正确释放primary_if引用，可能导致资源泄漏。
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 a6a73781b460c4fe2cf2c40400ac91dfddb353fa ~ e59b1960f71521ce4eb4397c4e82f5285601ab57 -
Linux Linux 5.18 -

II. Public POCs for CVE-2026-72228

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III. Intelligence Information for CVE-2026-72228

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Patches & Fixes for CVE-2026-72228 (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-2026-74280 10.0 CRITICAL crypto: marvell/octeontx - fix DMA cleanup using wrong loop index
CVE-2026-74279 10.0 CRITICAL crypto: cavium/cpt - fix DMA cleanup using wrong loop index
CVE-2026-72408 10.0 CRITICAL geneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint
CVE-2026-74309 10.0 CRITICAL vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
CVE-2026-72407 10.0 CRITICAL geneve: validate inner network offset in geneve_gro_complete()
CVE-2026-72421 10.0 CRITICAL ipv4: fib: Don't ignore error route in local/main tables.
CVE-2026-72493 9.9 CRITICAL net: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-72201 9.8 CRITICAL ntfs: validate index entries on reading
CVE-2026-74268 9.8 CRITICAL tcp: clear sock_ops cb flags before force-closing a child socket
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-2026-74478 9.8 CRITICAL um: vector: fix use-after-free in vector_mmsg_rx()
CVE-2026-72191 9.8 CRITICAL ntfs3: validate split-point offset in indx_insert_into_buffer
CVE-2026-72192 9.8 CRITICAL ntfs3: bound to_move in indx_insert_into_root before hdr_insert_head
CVE-2026-74269 9.8 CRITICAL bnxt: fix head underflow on XDP head-grow
CVE-2026-72194 9.8 CRITICAL fs/ntfs3: add depth limit to indx_find_buffer to prevent stack overflow
CVE-2026-72209 9.8 CRITICAL ntfs: validate attribute values on lookup
CVE-2026-72211 9.8 CRITICAL ntfs: grow index root value before reparent header update
CVE-2026-72210 9.8 CRITICAL ntfs: fix off-by-one in mapping pairs decoding bounds checks

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-2026-72228

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