PT-2026-26045 · Linux · Linux

Published 2026-03-18 · Updated 2026-03-18 · CVE-2026-23242

Mitre

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

Related Identifiers

CVE-2026-23242

Affected Products

Linux

References · 9

• https://nvd.nist.gov/vuln/detail/CVE-2026-23242 · Security Note
• https://git.kernel.org/stable/c/ab957056192d6bd068b3759cb2077d859cca01f0 · Note
• https://git.kernel.org/stable/c/87b7a036d2c73d5bb3ae2d47dee23de465db3355 · Note
• https://git.kernel.org/stable/c/ab61841633d10e56a58c1493a262f0d02dba2f5e · Note
• https://git.kernel.org/stable/c/14ab3da122bd18920ad57428f6cf4fade8385142 · Note
• https://git.kernel.org/stable/c/8564dcc12fbb372d984ab45768cae9335777b274 · Note
• https://git.kernel.org/stable/c/714c99e1dc8f85f446e05be02ba83972e981a817 · Note
• https://git.kernel.org/stable/c/ffba40b67663567481fa8a1ed5d2da36897c175d · Note
• https://git.kernel.org/stable/c/ce025f7f5d070596194315eb2e4e89d568b8a755 · Note