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CVE-2026-68344— usb: atm: ueagle-atm: reject descriptors that confuse probe and disconnect

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usb: atm: ueagle-atm驱动中uea_probe()和uea_disconnect()使用不同标准区分固件前后设备，特制描述符可能导致接口数据错误转换，造成越界读取。

AI Predicted 7.8 Difficulty: Easy EPSS 0.21% · P11

Possible ATT&CK Techniques 1 AI

T1200 · Hardware Additions

Affected Version Matrix 15

VendorProduct Version RangeStatus
Linux Linux d85f19aaef42a03e3e4765d659c761c8750a7f23< 9e7312844429379108ea9523a5ed934f142bb177 affected
76861031b43a18065d13f9ffb8595d25c7576005< f92832262718443feb4e5df2bf70424ba842629e affected
bbfedc84714064ea4845e6b76f96316eb5bb65d8< e814ae925f6f575325124c29dde518b92c822b83 affected
f2a6abc670104fc3e383ee3b1cf35c070485e3df< c035b1198906dd5bd3df9a3045b59254bad1ea7a affected
c581e30ae5b332d8acef64475a211b3f82099941< 9904a46401198872ab3de34fd11f383831ef3428 affected
509b51327320bdeaef1969248177a446ded073ab< d0a57f19fe2865b9747484f5f9c631f944ed9a0f affected
ddcdac47e1f2651c7be60e299f98faf981522797< 0cc0c4c14150bb5a16b88dd61368f96cd4caa9ce affected
e2674dfbed8a30d57e2bc872c4bfa6c3eec918bf< 71132cedd1ecbc4032d76e9928c18a10f7e39b80 affected
… +7 more rows
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I. Basic Information for CVE-2026-68344

Vulnerability Information
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Vulnerability Title
usb: atm: ueagle-atm: reject descriptors that confuse probe and disconnect
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: usb: atm: ueagle-atm: reject descriptors that confuse probe and disconnect uea_probe() distinguishes a pre-firmware device from a post-firmware one using the USB id (UEA_IS_PREFIRM()), and stores a different object as the interface data in each case: a 'struct completion' for a pre-firmware device (to be waited on in .disconnect()), or a 'struct usbatm_data' for a post-firmware one. uea_disconnect() instead tells the two apart by the number of interfaces of the active configuration (a pre-firmware device exposes a single interface, ADI930 has 2 and eagle has 3), and casts the interface data accordingly. Because the two handlers use different criteria, a crafted device that advertises a pre-firmware id together with a multi-interface descriptor (or a post-firmware id with a single interface) makes them disagree: the small 'struct completion' stored by uea_probe() is then passed to usbatm_usb_disconnect(), which casts it to 'struct usbatm_data' and takes instance->serialize, reading past the end of the allocation: BUG: KASAN: slab-out-of-bounds in __mutex_lock+0x152a/0x1b80 Read of size 8 at addr ffff8880470e2c60 by task kworker/1:2/982 ... __mutex_lock+0x152a/0x1b80 usbatm_usb_disconnect+0x70/0x820 uea_disconnect+0x133/0x2c0 usb_unbind_interface+0x1dd/0x9e0 ... which belongs to the cache kmalloc-96 of size 96 The buggy address is located 0 bytes to the right of allocated 96-byte region [ffff8880470e2c00, ffff8880470e2c60) Reject such inconsistent descriptors in uea_probe() so that both handlers always make the same pre/post-firmware decision.
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usb: atm: ueagle-atm驱动中uea_probe()和uea_disconnect()使用不同标准区分固件前后设备，特制描述符可能导致接口数据错误转换，造成越界读取。
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 d85f19aaef42a03e3e4765d659c761c8750a7f23 ~ 9e7312844429379108ea9523a5ed934f142bb177 -
Linux Linux 5.10.261 ~ 5.10.265 -

II. Public POCs for CVE-2026-68344

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III. Intelligence Information for CVE-2026-68344

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Patches & Fixes for CVE-2026-68344 (8)

Same Patch Batch · Linux · 2026-08-10 · 344 CVEs total

CVE-2026-68136 9.8 CRITICAL net: gro: fix double aggregation of flush-marked skbs
CVE-2026-68300 9.8 CRITICAL sctp: auth: verify auth requirement when auth_chunk is NULL
CVE-2026-68154 9.8 CRITICAL libceph: reject zero bucket types in crush_decode
CVE-2026-68156 9.8 CRITICAL libceph: refresh auth->authorizer_buf{,_len} after authorizer update
CVE-2026-68158 9.8 CRITICAL libceph: Fix multiplication overflow in decode_new_up_state_weight()
CVE-2026-68159 9.8 CRITICAL libceph: bound pg_{temp,upmap,upmap_items} length to CEPH_PG_MAX_SIZE
CVE-2026-68160 9.8 CRITICAL ceph: fix pre-auth out-of-bounds read on snaptrace in ceph_handle_caps()
CVE-2026-68161 9.8 CRITICAL sctp: close UDP tunnel sockets during netns teardown
CVE-2026-68144 9.8 CRITICAL phonet: pep: fix use-after-free in pep_get_sb()
CVE-2026-68170 9.8 CRITICAL mptcp: fix stale skb->sk reference on subflow close
CVE-2026-68302 9.8 CRITICAL amt: re-read skb header pointers after every pull
CVE-2026-68137 9.8 CRITICAL net/x25: fix use-after-free in x25_kill_by_neigh()
CVE-2026-68388 9.8 CRITICAL smb/client: handle overlapping allocated ranges in fallocate
CVE-2026-68426 9.8 CRITICAL xfrm: fix stale skb->prev after async crypto steals a GSO segment
CVE-2026-68385 9.8 CRITICAL s390/checksum: Fix csum_partial() without vector facility
CVE-2026-68127 9.8 CRITICAL ila: reload IPv6 header after pskb_may_pull in checksum adjust
CVE-2026-68117 9.8 CRITICAL tipc: clear sock->sk on the failed-insert path in tipc_sk_create()
CVE-2026-68381 9.8 CRITICAL ksmbd: pin conn during async oplock break notification
CVE-2026-68123 9.8 CRITICAL openvswitch: fix GSO userspace truncation underflow
CVE-2026-68124 9.6 CRITICAL mctp: serial: handle zero-length frames to prevent rx buffer overflow

Showing top 20 of 344 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-68344

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