CVE-2026-23242
Analyzed
Analyzed - Analysis Complete
Null Pointer Dereference in Linux Kernel RDMA siw Component
Vulnerability report for CVE-2026-23242, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-03-18
Last updated on: 2026-05-21
Assigner: kernel.org
Description
Description
In the Linux kernel, the following vulnerability has been resolved:
RDMA/siw: Fix potential NULL pointer dereference in header processing
If siw_get_hdr() returns -EINVAL before set_rx_fpdu_context(),
qp->rx_fpdu can be NULL. The error path in siw_tcp_rx_data()
dereferences qp->rx_fpdu->more_ddp_segs without checking, which
may lead to a NULL pointer deref. Only check more_ddp_segs when
rx_fpdu is present.
KASAN splat:
[ 101.384271] KASAN: null-ptr-deref in range [0x00000000000000c0-0x00000000000000c7]
[ 101.385869] RIP: 0010:siw_tcp_rx_data+0x13ad/0x1e50
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | linux_kernel | 5.3 |
| linux | linux_kernel | From 6.13 (inc) to 6.18.14 (exc) |
| linux | linux_kernel | From 6.19 (inc) to 6.19.4 (exc) |
| linux | linux_kernel | From 6.2 (inc) to 6.6.128 (exc) |
| linux | linux_kernel | From 6.7 (inc) to 6.12.75 (exc) |
| linux | linux_kernel | From 5.11 (inc) to 5.15.202 (exc) |
| linux | linux_kernel | From 5.16 (inc) to 6.1.165 (exc) |
| linux | linux_kernel | From 5.3.1 (inc) to 5.10.252 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-476 | The product dereferences a pointer that it expects to be valid but is NULL. |
