CVE-2025-40253

CVE-2025-40253

High · published December 4, 2025

CVSS v3.1
8.8
EPSS
0%
Percentile
21.5
In the wild
Unconfirmed
What it is

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

s390/ctcm: Fix double-kfree

The function 'mpc_rcvd_sweep_req(mpcginfo)' is called conditionally

from function 'ctcmpc_unpack_skb'. It frees passed mpcginfo.

After that a call to function 'kfree' in function 'ctcmpc_unpack_skb'

frees it again.

Remove 'kfree' call in function 'mpc_rcvd_sweep_req(mpcginfo)'.

Bug detected by the clang static analyzer.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00300 · 21.5th percentile
Published
2025-12-04T21:16Z
References (8)
https://git.kernel.org/stable/c/06f1dd1de0d33dbfbd2e1fc9fc57d8895f730de2 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3b177b2ded563df16f6d5920671ffcfe5915d472 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/43096dab8cc60fc39133205fd149a54d3acebea8 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6bf8ccaabce8cebb6cb1f255c93d0acdfe95c17a · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7616e2eee679746d526c7f5befd4eedb995935b5 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7ff76f8dc6b550f8d16487bf3cebc278be720b5c · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b9dbfb1b5699f9f1e4991f96741bdf9047147589 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/da02a1824884d6c84c5e5b5ac373b0c9e3288ec2 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS history
Timeline
  • 04 DEC 16:08Z
    s390/ctcm: Fix double-kfree
    cvelistv5