Answer in brief
CVE-2026-97524 records a High severity (CVSS 7.5) vulnerability in mptcp: avoid unneeded actions on subflow reset. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=e32d262c89e2b22cb0640223f953b548617ed8a6 <4b7abdcb5ba832fafab679f0d998af39cbc99307 || >=e32d262c89e2b22cb0640223f953b548617ed8a6 <b2dbcc1ed48b5ac070a41db4a52aade6823c4df0 || >=e32d262c89e2b22cb0640223f953b548617ed8a6 <ce7e4ede01ed3e47a48c0f1ce1d87bf4864bee9f || >=e32d262c89e2b22cb0640223f953b548617ed8a6 <2b0f561f21b27c40c91ea4975268a06092bd7e9c || fde99e972b8f88cebe619241d7aa43d288ef666a || 12c1676d598e3b8dd92a033b623b792cc2ea1ec5 || 35668f8ec84f6c944676e48ecc6bbc5fc8e6fe25 || b8be15d1ae7ea4eedd547c3b3141f592fbddcd30 || 8bfd391bde685df7289b928ce8876a3583be4bfb || >=5.10.228 <5.11 || >=5.15.169 <5.16 || >=6.1.113 <6.2 || >=6.6.57 <6.7 || >=6.11.4 <6.12 | 4b7abdcb5ba832fafab679f0d998af39cbc99307, b2dbcc1ed48b5ac070a41db4a52aade6823c4df0, ce7e4ede01ed3e47a48c0f1ce1d87bf4864bee9f, 2b0f561f21b27c40c91ea4975268a06092bd7e9c, 5.11, 5.16, 6.2, 6.7, 6.12 |
| Linux/Linuxgeneric | 6.12 | Not reported |
Published upstream
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 25, 2026
In the Linux kernel, the following vulnerability has been resolved: mptcp: avoid unneeded actions on subflow reset Once in a blue moon, the mptcp receive path can recursively call mptcp_data_ready() via state change under unlucky error conditions, and then try to hold the data lock again. Break the recursion loop explicitly checking for the exceptional condition. Add a new flag instead of using an existing one like 'closing', to exit early in subflow_state_change(), and explicitly flush the RX queue at reset time. This avoids unneeded processing to check for available data -- calling get_mapping_status() and more on a dying subflow -- but also in error reporting and worker scheduling. Note that we must consume the currently peeked skb before invoking mptcp_dss_corruption to avoid consuming it again after the eventual reset has freed it.
Quoted source text, attributed separately from HOL analysis.