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CVE-2026-46231— batman-adv: bla: put backbone reference on failed claim hash insert

AI Predicted 5.5 Difficulty: Theoretical EPSS 0.02% · P7

Possible ATT&CK Techniques 1AI

T1562.001

Affected Version Matrix 22

VendorProductVersion RangeStatus
LinuxLinux3db0decf1185357d6ab2256d0dede1ca9efda03d< 6c8b68a7ed667a63aa603ba4d3a7088be143007eaffected
3db0decf1185357d6ab2256d0dede1ca9efda03d< 769f413d374ff2b6ff6d8d8c37b4c1178e6cdf14affected
3db0decf1185357d6ab2256d0dede1ca9efda03d< 2888c9a154123db0254ae4fb9bea570c7e1f2e06affected
3db0decf1185357d6ab2256d0dede1ca9efda03d< 65419eb4259a26a3cd3f56fa0e3b3c113bf8c256affected
3db0decf1185357d6ab2256d0dede1ca9efda03d< fd0ca034c1e71ca7613cde9dd892836b2c2831bdaffected
3db0decf1185357d6ab2256d0dede1ca9efda03d< 0baf4b659cdc7305cf685b5a5d60f9e3816ab5d0affected
3db0decf1185357d6ab2256d0dede1ca9efda03d< 7cccf4eb4f96d3c3af91a00b7a9caa652439542eaffected
3db0decf1185357d6ab2256d0dede1ca9efda03d< ba9d20ee9076dac32c371116bacbe72480eb356caffected
… +14 more rows
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I. Basic Information for CVE-2026-46231

Vulnerability Information
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Vulnerability Title
batman-adv: bla: put backbone reference on failed claim hash insert
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: batman-adv: bla: put backbone reference on failed claim hash insert When batadv_bla_add_claim() fails to insert a new claim into the hash, it leaked a reference to the backbone_gw for which the claim was intended. Call batadv_backbone_gw_put() on the error path to release the reference and avoid leaking the backbone_gw object.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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 bla在向哈希插入声明失败时未释放backbone_gw引用，导致backbone_gw对象泄漏。
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

VendorProductAffected VersionsCPESubscribe
LinuxLinux 3db0decf1185357d6ab2256d0dede1ca9efda03d ~ 6c8b68a7ed667a63aa603ba4d3a7088be143007e -
LinuxLinux 4.7 -

II. Public POCs for CVE-2026-46231

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III. Intelligence Information for CVE-2026-46231

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Patches & Fixes for CVE-2026-46231 (8)

Same Patch Batch · Linux · 2026-05-28 · 138 CVEs total

CVE-2026-461359.8 CRITICALnvmet-tcp: fix race between ICReq handling and queue teardown
CVE-2026-461379.8 CRITICALmptcp: pm: ADD_ADDR rtx: fix potential data-race
CVE-2026-461959.8 CRITICALsmb: client: validate dacloffset before building DACL pointers
CVE-2026-461159.8 CRITICALblock: add pgmap check to biovec_phys_mergeable
CVE-2026-461859.1 CRITICALsmb/client: fix out-of-bounds read in symlink_data()
CVE-2026-461199.1 CRITICALlibceph: Fix slab-out-of-bounds access in auth message processing
CVE-2026-461559.1 CRITICALsmb/client: fix out-of-bounds read in smb2_compound_op()
CVE-2026-461528.8 HIGHwifi: mac80211: drop stray 'static' from fast-RX rx_result
CVE-2026-461988.8 HIGHbatman-adv: fix integer overflow on buff_pos
CVE-2026-461258.8 HIGHwifi: mac80211: remove station if connection prep fails
CVE-2026-462388.8 HIGHbatman-adv: stop caching unowned originator pointers in BAT IV
CVE-2026-461748.8 HIGHx86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache
CVE-2026-461138.8 HIGHKVM: x86: Fix shadow paging use-after-free due to unexpected GFN
CVE-2026-461668.8 HIGHwifi: mac80211: use safe list iteration in radar detect work
CVE-2026-462128.8 HIGHbatman-adv: bla: prevent use-after-free when deleting claims
CVE-2026-461388.1 HIGHBluetooth: hci_event: Fix OOB read and infinite loop in hci_le_create_big_complete_evt
CVE-2026-462328.1 HIGHHID: playstation: Clamp num_touch_reports
CVE-2026-462087.8 HIGHbatman-adv: stop tp_meter sessions during mesh teardown
CVE-2026-462097.8 HIGHdrm/gem: Fix inconsistent plane dimension calculation in drm_gem_fb_init_with_funcs()
CVE-2026-462107.8 HIGHmedia: iris: fix use-after-free of fmt_src during MBPF check

Showing top 20 of 138 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-46231

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