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CVE-2026-52919— batman-adv tp_meter计数器下溢漏洞

CVSS 7.8 · High EPSS 0.16% · P6
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I. CVE-2026-52919の基本情報

脆弱性情報

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脆弱性タイトル
batman-adv: fix tp_meter counter underflow during shutdown
ソース: NVD (National Vulnerability Database)
脆弱性説明
In the Linux kernel, the following vulnerability has been resolved: batman-adv: fix tp_meter counter underflow during shutdown batadv_tp_sender_shutdown() unconditionally decrements the "sending" atomic counter. If multiple paths (e.g. timeout, user cancel, and normal finish) call this function, the counter can underflow to -1. Since the sender logic treats any non-zero value as "still sending", a negative value causes the sender kthread to loop indefinitely. This leads to a use-after-free when the interface is removed while the zombie thread is still active. Fix this by using atomic_xchg() to ensure the counter only transitions from 1 to 0 once. [sven: added missing change in batadv_tp_send]
ソース: NVD (National Vulnerability Database)
CVSS情報
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
ソース: NVD (National Vulnerability Database)
脆弱性タイプ
N/A
ソース: NVD (National Vulnerability Database)

影響を受ける製品

ベンダープロダクト影響を受けるバージョンCPE購読
LinuxLinux 33a3bb4a3345bb511f9c69c913da95d4693e2a4e ~ e75e2ab463b5b34df6b98f94d740aff327ce9f6b -
LinuxLinux 4.8 -

II. CVE-2026-52919の公開POC

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III. CVE-2026-52919のインテリジェンス情報

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CVE-2026-52919 补丁与修复 (8)

Same Patch Batch · Linux · 2026-06-24 · 219 CVEs total

CVE-2026-529559.8 CRITICALlibceph: Fix potential out-of-bounds access in crush_decode()
CVE-2026-530029.8 CRITICALnetfilter: conntrack: remove sprintf usage
CVE-2026-530869.8 CRITICALnet: bcmgenet: fix racing timeout handler
CVE-2026-529939.8 CRITICALtipc: fix double-free in tipc_buf_append()
CVE-2026-530069.8 CRITICALipv6: fix possible UAF in icmpv6_rcv()
CVE-2026-529899.8 CRITICALnvmet-tcp: propagate nvmet_tcp_build_pdu_iovec() errors to its callers
CVE-2026-529869.8 CRITICALnetfilter: nf_conntrack_sip: don't use simple_strtoul
CVE-2026-529829.8 CRITICALnet: usb: rtl8150: fix use-after-free in rtl8150_start_xmit()
CVE-2026-530109.8 CRITICALksmbd: fix use-after-free in smb2_open during durable reconnect
CVE-2026-530459.8 CRITICALmemory: tegra124-emc: Fix dll_change check
CVE-2026-530469.8 CRITICALksmbd: fix use-after-free from async crypto on Qualcomm crypto engine
CVE-2026-530499.8 CRITICALgfs2: add some missing log locking
CVE-2026-530889.8 CRITICALnet: bcmgenet: fix off-by-one in bcmgenet_put_txcb
CVE-2026-529149.8 CRITICALbatman-adv: fix fragment reassembly length accounting
CVE-2026-529319.8 CRITICALbatman-adv: tp_meter: avoid use of uninit sender vars
CVE-2026-529249.8 CRITICALsctp: purge outqueue on stale COOKIE-ECHO handling
CVE-2026-530559.8 CRITICALcrypto: hisilicon/sec2 - prevent req used-after-free for sec
CVE-2026-530439.1 CRITICALocfs2/dlm: validate qr_numregions in dlm_match_regions()
CVE-2026-529999.1 CRITICALnetfilter: nfnetlink_osf: fix out-of-bounds read on option matching
CVE-2026-529589.1 CRITICALlibceph: Fix potential out-of-bounds access in osdmap_decode()

Showing 20 of 219 CVEs. View all on vendor page →

IV. 関連脆弱性

V. CVE-2026-52919へのコメント

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