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CVE-2026-97522— mptcp: fix bad accounting in __mptcp_subflow_push_pending()

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.

在 Linux 内核中，以下漏洞已得到修复： mptcp：修复 中的错误记账问题 如果 出错，则应避免更新已复制字节计数器，以防止后续出现推送调用不匹配的问题。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.20% · P9

Possible ATT&CK Techniques 1 AI

T1562

Affected Version Matrix 12

VendorProduct Version RangeStatus
Linux Linux 0fa1b3783a17d75a4aa1651a18ede041ffca5750< ddbf9f03c1cc7d5b86eebe7c2beea0db4286d354 affected
0fa1b3783a17d75a4aa1651a18ede041ffca5750< 9781fa35d9f7a87a83115acd3a88bc9ce35b5407 affected
0fa1b3783a17d75a4aa1651a18ede041ffca5750< a0a64525f3414268ed4b1945a1dc690aa974dd4f affected
0fa1b3783a17d75a4aa1651a18ede041ffca5750< dc054821e639a2e14f1419436612db70b6af45fc affected
0fa1b3783a17d75a4aa1651a18ede041ffca5750< f3ef03357396d4b147d8e76c75fb612c2f264ffc affected
6.6 affected
< 6.6 unaffected
6.6.158≤ 6.6.* unaffected
… +4 more rows
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I. Basic Information for CVE-2026-97522

Vulnerability Information
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Vulnerability Title
mptcp: fix bad accounting in __mptcp_subflow_push_pending()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: mptcp: fix bad accounting in __mptcp_subflow_push_pending() If __subflow_push_pending() errors out we should avoid updating the copied byte counters, to avoid mismatch push call later on.
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 0fa1b3783a17d75a4aa1651a18ede041ffca5750 ~ ddbf9f03c1cc7d5b86eebe7c2beea0db4286d354 -
Linux Linux 6.6 -

II. Public POCs for CVE-2026-97522

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III. Intelligence Information for CVE-2026-97522

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Patches & Fixes for CVE-2026-97522 (5)

Same Patch Batch · Linux · 2026-09-25 · 372 CVEs total

CVE-2026-100075 9.8 CRITICAL RDMA/srpt: Fix srpt_alloc_rw_ctxs() unwind counters
CVE-2026-97957 8.8 HIGH net: hinic: fix mailbox segment buffer overflow
CVE-2026-97527 8.8 HIGH scsi: qla2xxx: Serialize NVMe unsol ctx list with a per-fcport lock
CVE-2026-97528 8.8 HIGH scsi: qla2xxx: Unlink NVMe unsol ctx before freeing on LS reject error
CVE-2026-98115 8.8 HIGH ksmbd: safely drain sessions during logoff
CVE-2026-97555 8.8 HIGH smb: client: fix heap overflow in DACL owner/group rewrite
CVE-2026-97525 8.2 HIGH x86/mm/pat: Allocate split page tables as kernel page tables
CVE-2026-98069 8.1 HIGH net/rds: acquire the fastpath locks in rds_conn_shutdown()
CVE-2026-97570 8.1 HIGH bnxt_en: Bound SW TPA IDs to prevent crashes
CVE-2026-98070 8.1 HIGH net/rds: acquire RDS_IN_XMIT in rds_tcp_reset_callbacks()
CVE-2026-98130 8.1 HIGH sctp: fix a TOCTOU race in SCTP_CMD_TIMER_START
CVE-2026-97573 8.1 HIGH bnxt_en: Handle buffer allocation failure in bnxt_rx_ring_reset()
CVE-2026-97575 7.8 HIGH media: v4l2-ctrls: validate AV1 tile counts
CVE-2026-97602 7.8 HIGH inet: frags: invalidate queues before flushing them
CVE-2026-97594 7.8 HIGH landlock: Fix use-after-free of the source's parent directory
CVE-2026-98143 7.8 HIGH accel: ethosu: Don't read the U65 rounding mode as a storage mode
CVE-2026-97548 7.8 HIGH xfs: fix the rtrmap and rtrefcount _maxlevels_ondisk functions
CVE-2026-97584 7.8 HIGH afs: Fix incorrect free in candidate cleanup in afs_lookup_server()
CVE-2026-98112 7.8 HIGH ksmbd: fix listener task lifetime on netdev events
CVE-2026-97576 7.8 HIGH media: v4l2-ctrls: validate HEVC tile counts

Showing top 20 of 372 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-97522

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