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.
Metrics
CVSS 3.1 7.5/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HAffected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 90017accff61ae89283ad9a51f9ac46ca01633fb, < 61cda2777b07d27459f5cac5a047c3edf9c8a1a9; >= 90017accff61ae89283ad9a51f9ac46ca01633fb, < 08165c296597075763130919f2aae59b5822f016; >= 90017accff61ae89283ad9a51f9ac46ca01633fb, < 03e80a4b04ef1fb2c61dd63216ab8d3a5dcb196f; >= 90017accff61ae89283ad9a51f9ac46ca01633fb, < 4f6da435fb5d8a21cbf8cae5ca5a2ba0e1012b71; >= 90017accff61ae89283ad9a51f9ac46ca01633fb, < cb9055ba30306ede4ad920002233d0659982f1cb; >= 90017accff61ae89283ad9a51f9ac46ca01633fb, < 7a832b0f99be19df608cb75c023f8027b1789bd1; >= 90017accff61ae89283ad9a51f9ac46ca01633fb, < 89b465b54227c245ddc7cc9ed822231af21123ef; >= 90017accff61ae89283ad9a51f9ac46ca01633fb, < 441f0647f7673e0e64d4910ef61a5fb8f16bfb82 |
| Linux | Linux | 4.8 |
References
- https://git.kernel.org/stable/c/03e80a4b04ef1fb2c61dd63216ab8d3a5dcb196f
- https://git.kernel.org/stable/c/08165c296597075763130919f2aae59b5822f016
- https://git.kernel.org/stable/c/441f0647f7673e0e64d4910ef61a5fb8f16bfb82
- https://git.kernel.org/stable/c/4f6da435fb5d8a21cbf8cae5ca5a2ba0e1012b71
- https://git.kernel.org/stable/c/61cda2777b07d27459f5cac5a047c3edf9c8a1a9
- https://git.kernel.org/stable/c/7a832b0f99be19df608cb75c023f8027b1789bd1
- https://git.kernel.org/stable/c/89b465b54227c245ddc7cc9ed822231af21123ef
- https://git.kernel.org/stable/c/cb9055ba30306ede4ad920002233d0659982f1cb
Timeline
- Published
- Dec 4, 2025
- Last modified
- Oct 19, 2026
- NVD status
- Deferred