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CVE-2026-72234— batman-adv: access unicast_ttvn skb->data only after skb realloc

CVSS 9.8 · Critical EPSS 0.68% · P50

Affected Version Matrix 18

VendorProductVersion RangeStatus
LinuxLinuxc018ad3de61a1dc4194879a53e5559e094aa7b1a< aa9558af859934f24717d4bab97d61004f91a736affected
c018ad3de61a1dc4194879a53e5559e094aa7b1a< 9c2c05629e46c1fd43931506d41c56a885a98eb4affected
c018ad3de61a1dc4194879a53e5559e094aa7b1a< 7b162b36de750565404cd3b98315706622c6974faffected
c018ad3de61a1dc4194879a53e5559e094aa7b1a< ed90eb5c68420cdfe67ec1f773324198d2ef6f50affected
c018ad3de61a1dc4194879a53e5559e094aa7b1a< 979175834a699ccc3c4c0b0ba60ecae0f135a587affected
c018ad3de61a1dc4194879a53e5559e094aa7b1a< b8afcf799b2cc92c41beebd029e53ed18960184aaffected
c018ad3de61a1dc4194879a53e5559e094aa7b1a< 9a7b7248798123efbd5fafe58461d57c7cc718afaffected
c018ad3de61a1dc4194879a53e5559e094aa7b1a< 7141990add3f75436f2933cb310654cad3b1e3e9affected
… +10 more rows
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I. Basic Information for CVE-2026-72234

Vulnerability Information
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Vulnerability Title
batman-adv: access unicast_ttvn skb->data only after skb realloc
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: batman-adv: access unicast_ttvn skb->data only after skb realloc The pskb_may_pull() called by batadv_get_vid() could reallocate the buffer behind the skb. Variables which were pointing to the old buffer need to be reassigned to avoid an use-after-free. This was done correctly for the ethernet header but missed for the unicast_packet pointer.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/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pskb_may_pull()重新分配skb缓冲区后，unicast_packet指针未重新赋值，可能导致释放后重用。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux c018ad3de61a1dc4194879a53e5559e094aa7b1a ~ aa9558af859934f24717d4bab97d61004f91a736 -
LinuxLinux 3.13 -

II. Public POCs for CVE-2026-72234

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III. Intelligence Information for CVE-2026-72234

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Patches & Fixes for CVE-2026-72234 (8)

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

CVE-2026-7240710.0 CRITICALgeneve: validate inner network offset in geneve_gro_complete()
CVE-2026-7240810.0 CRITICALgeneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint
CVE-2026-7427910.0 CRITICALcrypto: cavium/cpt - fix DMA cleanup using wrong loop index
CVE-2026-7242110.0 CRITICALipv4: fib: Don't ignore error route in local/main tables.
CVE-2026-7428010.0 CRITICALcrypto: marvell/octeontx - fix DMA cleanup using wrong loop index
CVE-2026-7430910.0 CRITICALvdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
CVE-2026-7447510.0 CRITICALvxlan: use neigh_ha_snapshot() in route_shortcircuit()
CVE-2026-724939.9 CRITICALnet: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-724369.8 CRITICALnetfilter: ipset: Don't use test_bit() in lockless RCU readers in hash types
CVE-2026-743949.8 CRITICALRDMA/srpt: fix integer overflow in immediate data length check
CVE-2026-724179.8 CRITICALnetfilter: flowtable: Validate iph->ihl in nf_flow_ip4_tunnel_proto()
CVE-2026-720699.8 CRITICALlocking/rt: Fix the incorrect RCU protection in rt_spin_unlock()
CVE-2026-724229.8 CRITICALksmbd: fix use-after-free of conn->preauth_info in concurrent SMB2 NEGOTIATE
CVE-2026-720659.8 CRITICALnet: mana: Validate the packet length reported by the NIC
CVE-2026-720649.8 CRITICALnet: mana: Sync page pool RX frags for CPU
CVE-2026-724299.8 CRITICALipv6: ioam: fix type confusion of dst_entry
CVE-2026-722519.8 CRITICALnetfilter: nf_nat_sip: reload possible stale data pointer
CVE-2026-722269.8 CRITICALbatman-adv: tt: prevent TVLV OOB check overflow
CVE-2026-724519.8 CRITICALxfrm: Fix xfrm state cache insertion race
CVE-2026-720419.8 CRITICALespintcp: use sk_msg_free_partial to fix partial send

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-2026-72234

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