CVE-2026-23242
RDMA/siw: Fix potential NULL pointer dereference in header processing
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
INFO
Published Date :
March 18, 2026, 11:16 a.m.
Last Modified :
March 18, 2026, 11:16 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-23242
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update the Linux kernel.
- Apply the siw_get_hdr() fix.
- Verify RX FPDU context is valid.
- Ensure qp->rx_fpdu is checked.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-23242.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-23242 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-23242
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-23242 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-23242 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Mar. 18, 2026
Action Type Old Value New Value Added 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 Added Reference https://git.kernel.org/stable/c/14ab3da122bd18920ad57428f6cf4fade8385142 Added Reference https://git.kernel.org/stable/c/714c99e1dc8f85f446e05be02ba83972e981a817 Added Reference https://git.kernel.org/stable/c/8564dcc12fbb372d984ab45768cae9335777b274 Added Reference https://git.kernel.org/stable/c/87b7a036d2c73d5bb3ae2d47dee23de465db3355 Added Reference https://git.kernel.org/stable/c/ab61841633d10e56a58c1493a262f0d02dba2f5e Added Reference https://git.kernel.org/stable/c/ab957056192d6bd068b3759cb2077d859cca01f0 Added Reference https://git.kernel.org/stable/c/ce025f7f5d070596194315eb2e4e89d568b8a755 Added Reference https://git.kernel.org/stable/c/ffba40b67663567481fa8a1ed5d2da36897c175d