Vulnerability details
CVE-2026-80588
Linux Linux
mptcp: reclaim forward-allocated memory on RX path errors
CVSS 3.1
7.5High
Official description
In the Linux kernel, the following vulnerability has been resolved: mptcp: reclaim forward-allocated memory on RX path errors After commit 9db5b3cec4ec ("mptcp: borrow forward memory from subflow"), errors in the receive path prior to queueing skbs into the receive queue do not trigger forward-allocated memory reclaiming. Prevent forward memory from growing unboundedly in pathological drop scenarios by explicitly reclaiming memory when skbs are dropped.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.5High | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Linux | Linux | 6.19 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6.18.35 ≤ v < 6.18.46 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 9db5b3cec4ec1c0cd3239689f5c8653d691a1754 ≤ v < 8277f48a06d3aa1441f6d0b6998ccc0360d30ed8 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 9db5b3cec4ec1c0cd3239689f5c8653d691a1754 ≤ v < 41b49a8b914ec7dcb03eae93fb27f3c464078644 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | a84164847b1e0a106ebc46821e5d2f9b775c9dc8 ≤ v < 473f1a5ab2abc98dd9e74b95b9c23c66c47535cc | CVEProject cvelistV5 (CNA) |
References and advisories
3
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Details
- Published
- 2026-08-26
- Last updated
- 2026-10-16
- State
- Published
- Assigner (CNA)
- Linux
Exploit prediction (EPSS)
0.33%
Probability of exploitation in 30 days
26.9%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Partial
Weaknesses (CWE)
- —