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CVE-2026-46198— batman-adv: fix integer overflow on buff_pos

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基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于batman-adv中buff_pos存在整数溢出，由于大小检查使用int类型而buff_pos使用s16类型，可能导致越界读取。

CVSS 8.8 · High EPSS 0.41% · P34

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux c6c8fea29769d998d94fcec9b9f14d4b52b349d3< 867cd090760e8f5cd206f387b47ff9c56fac04e9 affected
c6c8fea29769d998d94fcec9b9f14d4b52b349d3< 10bb1f366d884d506c38a947b43026a75d1afe9a affected
c6c8fea29769d998d94fcec9b9f14d4b52b349d3< 96c9c0ed9a9579a9085765aceaa4556a6666eb82 affected
c6c8fea29769d998d94fcec9b9f14d4b52b349d3< f61499359fa529f0d45a53bf7c573a49eb6322e6 affected
c6c8fea29769d998d94fcec9b9f14d4b52b349d3< 974542d1efc48b7e9fe16184e647615cba39969b affected
c6c8fea29769d998d94fcec9b9f14d4b52b349d3< bf872db54f91ffe70104b98c20068b2d5910e018 affected
c6c8fea29769d998d94fcec9b9f14d4b52b349d3< b252797bfced986d6d92ec2f4cfcca842ce8aa78 affected
c6c8fea29769d998d94fcec9b9f14d4b52b349d3< 0799e5943611006b346b8813c7daf7dd5aa26bfd affected
… +10 more rows
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I. Basic Information for CVE-2026-46198

Vulnerability Information
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Vulnerability Title
batman-adv: fix integer overflow on buff_pos
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix integer overflow on buff_pos Fixing an integer overflow present in batadv_iv_ogm_send_to_if. The size check is done using the int type in batadv_iv_ogm_aggr_packet whereas the buff_pos variable uses the s16 type. This could lead to an out-of-bound read.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/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基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于batman-adv中buff_pos存在整数溢出，由于大小检查使用int类型而buff_pos使用s16类型，可能导致越界读取。
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 ~ 867cd090760e8f5cd206f387b47ff9c56fac04e9 -
Linux Linux 2.6.38 -

II. Public POCs for CVE-2026-46198

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III. Intelligence Information for CVE-2026-46198

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Patches & Fixes for CVE-2026-46198 (8)

Same Patch Batch · Linux · 2026-05-28 · 135 CVEs total

CVE-2026-46135 9.8 CRITICAL nvmet-tcp: fix race between ICReq handling and queue teardown
CVE-2026-46195 9.8 CRITICAL smb: client: validate dacloffset before building DACL pointers
CVE-2026-46137 9.8 CRITICAL mptcp: pm: ADD_ADDR rtx: fix potential data-race
CVE-2026-46115 9.8 CRITICAL block: add pgmap check to biovec_phys_mergeable
CVE-2026-46185 9.1 CRITICAL smb/client: fix out-of-bounds read in symlink_data()
CVE-2026-46155 9.1 CRITICAL smb/client: fix out-of-bounds read in smb2_compound_op()
CVE-2026-46119 9.1 CRITICAL libceph: Fix slab-out-of-bounds access in auth message processing
CVE-2026-46238 8.8 HIGH batman-adv: stop caching unowned originator pointers in BAT IV
CVE-2026-46174 8.8 HIGH x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache
CVE-2026-46125 8.8 HIGH wifi: mac80211: remove station if connection prep fails
CVE-2026-46166 8.8 HIGH wifi: mac80211: use safe list iteration in radar detect work
CVE-2026-46212 8.8 HIGH batman-adv: bla: prevent use-after-free when deleting claims
CVE-2026-46152 8.8 HIGH wifi: mac80211: drop stray 'static' from fast-RX rx_result
CVE-2026-46113 8.8 HIGH KVM: x86: Fix shadow paging use-after-free due to unexpected GFN
CVE-2026-46232 8.1 HIGH HID: playstation: Clamp num_touch_reports
CVE-2026-46138 8.1 HIGH Bluetooth: hci_event: Fix OOB read and infinite loop in hci_le_create_big_complete_evt
CVE-2026-46157 7.8 HIGH ALSA: pcm: oss: Fix data race at accessing runtime.oss.trigger
CVE-2026-46215 7.8 HIGH drm: Set old handle to NULL before prime swap in change_handle
CVE-2026-46201 7.8 HIGH drm/xe: Fix dma-buf attachment leak in xe_gem_prime_import()
CVE-2026-46227 7.8 HIGH sctp: revalidate list cursor after sctp_sendmsg_to_asoc() in SCTP_SENDALL

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-2026-46198

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