CVE-2026-63867
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
mptcp: close TOCTOU race while computing rcv_wnd
In the Linux kernel, the following vulnerability has been resolved: mptcp: close TOCTOU race while computing rcv_wnd The MPTCP output path access locklessly the MPTCP-level ack_seq in multiple times, using possibly different values for the data_ack in the DSS option and to compute the announced rcv wnd for the same packet. Refactor the cote to avoid inconsistencies which may confuse the peer. Also ensure that the MPTCP level rcv wnd is updated only when the egress packet actually contains a DSS ack.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| fa3fe2b150316b294f2c662653501273ff25bba8 | affected | git | 301a33fd590c408a05c5df800e0cc1e6a8a2f8f8 | Unavailable | None listed |
| fa3fe2b150316b294f2c662653501273ff25bba8 | affected | git | 68364963e5baf03f16b4420292291f75c8f66497 | Unavailable | None listed |
| fa3fe2b150316b294f2c662653501273ff25bba8 | affected | git | 907ac6b1658e0277f979fcdfae2a753b495c1510 | Unavailable | None listed |
| fa3fe2b150316b294f2c662653501273ff25bba8 | affected | git | c4f4cf60797974873dbc8e100144682a6f2f861f | Unavailable | None listed |
| fa3fe2b150316b294f2c662653501273ff25bba8 | affected | git | 3b8cbba7c0ed31189c89f90be247b8973ffa79ef | Unavailable | None listed |
| fa3fe2b150316b294f2c662653501273ff25bba8 | affected | git | 8f4f0a157e8436a05bf8c3670b24dbc258911c43 | Unavailable | None listed |
| fa3fe2b150316b294f2c662653501273ff25bba8 | affected | git | 8ab24fdebc369c0dfb90f82c1650b1e66662bb45 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5.11 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.11 | Unavailable | None listed |
| 5.15.210 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.176 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.143 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.94 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.36 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.0.13 | unaffected | semver | Unavailable | 7.0.* | None listed |
| 7.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |