CVE-2025-40240

Advisory lineage Upstream: 0 Downstream: 60
Deferred
Published: 04 Dec 2025, 15:31
Last modified:11 May 2026, 21:45

Vulnerability Summary

Overall Risk (default)
minimal
0/100
CVSS Score
No data
EPSS Score
0.04% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

04 Dec 2025, 15:31
Published
Vulnerability first disclosed
11 May 2026, 21:45
Last Modified
Vulnerability information updated

Description

In the Linux kernel, the following vulnerability has been resolved: sctp: avoid NULL dereference when chunk data buffer is missing chunk->skb pointer is dereferenced in the if-block where it's supposed to be NULL only. chunk->skb can only be NULL if chunk->head_skb is not. Check for frag_list instead and do it just before replacing chunk->skb. We're sure that otherwise chunk->skb is non-NULL because of outer if() condition.

EPSS Trends

Current EPSS score: 0.04%• Percentile: 12%

Affected Systems

  • linux•linux

    ≥ 90017accff61ae89283ad9a51f9ac46ca01633fb, < 61cda2777b07d27459f5cac5a047c3edf9c8a1a9 | ≥ 90017accff61ae89283ad9a51f9ac46ca01633fb, < 08165c296597075763130919f2aae59b5822f016 | ≥ 90017accff61ae89283ad9a51f9ac46ca01633fb, < 03e80a4b04ef1fb2c61dd63216ab8d3a5dcb196f | ≥ 90017accff61ae89283ad9a51f9ac46ca01633fb, < 4f6da435fb5d8a21cbf8cae5ca5a2ba0e1012b71 | ≥ 90017accff61ae89283ad9a51f9ac46ca01633fb, < cb9055ba30306ede4ad920002233d0659982f1cb | ≥ 90017accff61ae89283ad9a51f9ac46ca01633fb, < 7a832b0f99be19df608cb75c023f8027b1789bd1 | ≥ 90017accff61ae89283ad9a51f9ac46ca01633fb, < 89b465b54227c245ddc7cc9ed822231af21123ef | ≥ 90017accff61ae89283ad9a51f9ac46ca01633fb, < 441f0647f7673e0e64d4910ef61a5fb8f16bfb82 | 4.8

References (8)