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CVE-2026-46168— mptcp: fix scheduling with atomic in timestamp sockopt

AI Predicted 5.5 Difficulty: Moderate EPSS 0.02% · P7

Possible ATT&CK Techniques 1AI

T1205.001 · Port Knocking

Affected Version Matrix 16

VendorProductVersion RangeStatus
LinuxLinux9061f24bf82ec2e92dd1e7c10b98b680db023d31< 0949d8bbbedbafe0136a1723c41eb823c2f1e09daffected
9061f24bf82ec2e92dd1e7c10b98b680db023d31< e792cfb6aeaf65612cdf8e3ac431d65e66283654affected
9061f24bf82ec2e92dd1e7c10b98b680db023d31< ebeb70e29e37cfce899309cc2665a3bfe960ed94affected
9061f24bf82ec2e92dd1e7c10b98b680db023d31< b157dab93a7af44a84e78cf0cb311dde475cff5baffected
9061f24bf82ec2e92dd1e7c10b98b680db023d31< 8a005fe451c73fd2b3d1faa5643c11e6bd07acfcaffected
9061f24bf82ec2e92dd1e7c10b98b680db023d31< 7eb513b42721bee4b96da69f6188d5a7783f210daffected
9061f24bf82ec2e92dd1e7c10b98b680db023d31< b5c52908d52c6c8eb8933264aa6087a0600fd892affected
5.14affected
… +8 more rows
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I. Basic Information for CVE-2026-46168

Vulnerability Information
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Vulnerability Title
mptcp: fix scheduling with atomic in timestamp sockopt
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mptcp: fix scheduling with atomic in timestamp sockopt Using lock_sock_fast() (atomic context) around sock_set_timestamp() and sock_set_timestamping() is unsafe, as both helpers can sleep. Replace lock_sock_fast() with sleepable lock_sock()/release_sock() to avoid scheduling while atomic panic.
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mptcp时间戳sockopt中使用原子上下文调度，可能导致调度时原子panic。
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 9061f24bf82ec2e92dd1e7c10b98b680db023d31 ~ 0949d8bbbedbafe0136a1723c41eb823c2f1e09d -
LinuxLinux 5.14 -

II. Public POCs for CVE-2026-46168

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III. Intelligence Information for CVE-2026-46168

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Patches & Fixes for CVE-2026-46168 (7)

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

CVE-2026-461959.8 CRITICALsmb: client: validate dacloffset before building DACL pointers
CVE-2026-461379.8 CRITICALmptcp: pm: ADD_ADDR rtx: fix potential data-race
CVE-2026-461359.8 CRITICALnvmet-tcp: fix race between ICReq handling and queue teardown
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-2026-461258.8 HIGHwifi: mac80211: remove station if connection prep fails
CVE-2026-461748.8 HIGHx86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache
CVE-2026-461988.8 HIGHbatman-adv: fix integer overflow on buff_pos
CVE-2026-461668.8 HIGHwifi: mac80211: use safe list iteration in radar detect work
CVE-2026-461138.8 HIGHKVM: x86: Fix shadow paging use-after-free due to unexpected GFN
CVE-2026-461528.8 HIGHwifi: mac80211: drop stray 'static' from fast-RX rx_result
CVE-2026-462128.8 HIGHbatman-adv: bla: prevent use-after-free when deleting claims
CVE-2026-462388.8 HIGHbatman-adv: stop caching unowned originator pointers in BAT IV
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-2026-461977.8 HIGHdrm/amdkfd: validate SVM ioctl nattr against buffer size
CVE-2026-461767.8 HIGHRDMA/mlx5: Fix error path fall-through in mlx5_ib_dev_res_srq_init()
CVE-2026-461457.8 HIGHRDMA/mana: Validate rx_hash_key_len

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-2026-46168

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