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CVE-2025-40253

HIGHCVSS 8.8/10EPSS 0.19%

Last modified

CVE-2025-40253 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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.. EPSS estimates a 0.19% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
8.8/10

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.19%

8.7th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 467ddbbe7e749d558f13e640f50f546149c930b3, < 06f1dd1de0d33dbfbd2e1fc9fc57d8895f730de2; >= 4d3c6d741816539b57fa1110c3f765a8c176d7b4, < 6bf8ccaabce8cebb6cb1f255c93d0acdfe95c17a; >= 2bd57101c3ecf3f8c0da1d26c2b6ad511adc6d50, < 7616e2eee679746d526c7f5befd4eedb995935b5; >= 0c0b20587b9f25a2ad14db7f80ebe49bdf29920a, < 43096dab8cc60fc39133205fd149a54d3acebea8; >= 0c0b20587b9f25a2ad14db7f80ebe49bdf29920a, < 3b177b2ded563df16f6d5920671ffcfe5915d472; >= 0c0b20587b9f25a2ad14db7f80ebe49bdf29920a, < b9dbfb1b5699f9f1e4991f96741bdf9047147589; >= 0c0b20587b9f25a2ad14db7f80ebe49bdf29920a, < 7ff76f8dc6b550f8d16487bf3cebc278be720b5c; >= 0c0b20587b9f25a2ad14db7f80ebe49bdf29920a, < da02a1824884d6c84c5e5b5ac373b0c9e3288ec2; 36933de59f67029e5739a98393891f9b94f27e0f; d886b4292a1c5b4facdb2dfdc31f0fecc71df898; 4c9ba0fed125deba8416b995b0c274b0804c0c24; ea0053af5dab4d63a9c44563973fb2f3bfd9eb2b; >= 5.4.195, < 5.4.302; >= 5.10.117, < 5.10.247; >= 5.15.41, < 5.15.197; >= 4.9.315, < 4.10; >= 4.14.280, < 4.15; >= 4.19.244, < 4.20; >= 5.17.9, < 5.18
LinuxLinux5.18

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2025-40253?
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.
How severe is CVE-2025-40253?
CVE-2025-40253 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.19% probability of exploitation in the next 30 days.
How do I fix CVE-2025-40253?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST