CVE-2026-97568

CVE-2026-97568

published September 25, 2026

CVSS
—
EPSS
0%
Percentile
10.7
In the wild
Unconfirmed
What it is

In the Linux kernel, the following vulnerability has been resolved:

mptcp: syncookies: remember the request backup flag

Instead of using an uninitialised bit when copying the info in

subflow_ulp_clone().

To fix this, no need to extend the join_entry structure: backup is

coming from struct mptcp_subflow_request_sock, only one bit. Do the same

here by using one bit for both.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00210 · 10.7th percentile
Published
2026-09-25T15:17Z
References (8)
https://git.kernel.org/stable/c/00b2bd518911e0daab00f4749cce68c191ccebb4 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/06d649f9cd03a9f8e768a658b20acf8d2c8022e0 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1668b34452009d27be3262646de748a3e48ffd51 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/360d99258a6402cb8e49771460944f19f04d25b7 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/61178d0b85b4b1b53e78b06e89d018d22d102f88 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b138e7dc719f0a3949de8bb6500b8cf1604eea06 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b76c0e28b392620dfbaf92cdeedbf115820b44cb · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c97fa2c7ada82d4cac1c6c00643238dc4c462f15 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS history
Timeline
  • 27 SEP 03:28Z
    EPSS moved — → 0%
    epss
  • 25 SEP 10:21Z
    mptcp: syncookies: remember the request backup flag
    cvelistv5