Answer in brief
CVE-2025-40253 records a High severity (CVSS 8.8) vulnerability in s390/ctcm: Fix double-kfree. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=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 | 06f1dd1de0d33dbfbd2e1fc9fc57d8895f730de2, 6bf8ccaabce8cebb6cb1f255c93d0acdfe95c17a, 7616e2eee679746d526c7f5befd4eedb995935b5, 43096dab8cc60fc39133205fd149a54d3acebea8, 3b177b2ded563df16f6d5920671ffcfe5915d472, b9dbfb1b5699f9f1e4991f96741bdf9047147589, 7ff76f8dc6b550f8d16487bf3cebc278be720b5c, da02a1824884d6c84c5e5b5ac373b0c9e3288ec2, 5.4.302, 5.10.247, 5.15.197, 4.10, 4.15, 4.20, 5.18 |
| Linux/Linuxgeneric | 5.18 | Not reported |
Published upstream
Dec 4, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.