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CVE-2026-46137— mptcp: pm: ADD_ADDR rtx: fix potential data-race

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mptcp pm中ADD_ADDR重传定时器存在数据竞争，可能导致状态不一致。

CVSS 9.8 · Critical EPSS 0.48% · P40

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 00cfd77b9063dcdf3628a7087faba60de85a9cc8< d9b272a85fe6b8f993e37915311e4038c814a533 affected
00cfd77b9063dcdf3628a7087faba60de85a9cc8< 23079e0b7742ec114d3507c3e3aad01b7b69e4af affected
00cfd77b9063dcdf3628a7087faba60de85a9cc8< b35605e1f1e877038c8c9d499babbc891cdd234f affected
00cfd77b9063dcdf3628a7087faba60de85a9cc8< 013dcdc1961543b9a3433466bc8c79a2f4ca75b5 affected
00cfd77b9063dcdf3628a7087faba60de85a9cc8< 6e4710d7d8782cb61af29a7e7111ddfc38b9e1a3 affected
00cfd77b9063dcdf3628a7087faba60de85a9cc8< 2ad56e434199ca24a812bb353667aa1c3860f513 affected
00cfd77b9063dcdf3628a7087faba60de85a9cc8< cc3c0399361efaaf7ae64262eb3f70829b1189c6 affected
00cfd77b9063dcdf3628a7087faba60de85a9cc8< 5cd6e0ad79d2615264f63929f8b457ad97ae550d affected
… +10 more rows
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I. Basic Information for CVE-2026-46137

Vulnerability Information
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Vulnerability Title
mptcp: pm: ADD_ADDR rtx: fix potential data-race
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: ADD_ADDR rtx: fix potential data-race This mptcp_pm_add_timer() helper is executed as a timer callback in softirq context. To avoid any data races, the socket lock needs to be held with bh_lock_sock(). If the socket is in use, retry again soon after, similar to what is done with the keepalive timer.
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mptcp pm中ADD_ADDR重传定时器存在数据竞争，可能导致状态不一致。
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 00cfd77b9063dcdf3628a7087faba60de85a9cc8 ~ d9b272a85fe6b8f993e37915311e4038c814a533 -
Linux Linux 5.10 -

II. Public POCs for CVE-2026-46137

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III. Intelligence Information for CVE-2026-46137

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Patches & Fixes for CVE-2026-46137 (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-2026-46115 9.8 CRITICAL block: add pgmap check to biovec_phys_mergeable
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-2026-46185 9.1 CRITICAL smb/client: fix out-of-bounds read in symlink_data()
CVE-2026-46125 8.8 HIGH wifi: mac80211: remove station if connection prep fails
CVE-2026-46212 8.8 HIGH batman-adv: bla: prevent use-after-free when deleting claims
CVE-2026-46198 8.8 HIGH batman-adv: fix integer overflow on buff_pos
CVE-2026-46113 8.8 HIGH KVM: x86: Fix shadow paging use-after-free due to unexpected GFN
CVE-2026-46166 8.8 HIGH wifi: mac80211: use safe list iteration in radar detect work
CVE-2026-46152 8.8 HIGH wifi: mac80211: drop stray 'static' from fast-RX rx_result
CVE-2026-46174 8.8 HIGH x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache
CVE-2026-46238 8.8 HIGH batman-adv: stop caching unowned originator pointers in BAT IV
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-2026-46129 7.8 HIGH btrfs: fix double free in create_space_info() error path
CVE-2026-46173 7.8 HIGH exit: prevent preemption of oopsing TASK_DEAD task
CVE-2026-46227 7.8 HIGH sctp: revalidate list cursor after sctp_sendmsg_to_asoc() in SCTP_SENDALL
CVE-2026-46215 7.8 HIGH drm: Set old handle to NULL before prime swap in change_handle

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-2026-46137

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