7.5 High

CVE-2026-23242 In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: Fix potential NULL pointer dereference…

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

Affected products and versions

Product	Affected versions	Fixed in
Linux 7.0	earliest → < 7.0	7.0
Linux 6.19	earliest → < 6.19.4	6.19.4
Linux 6.18	earliest → < 6.18.14	6.18.14
Linux 6.12	earliest → < 6.12.75	6.12.75
Linux 6.6	earliest → < 6.6.128	6.6.128
Linux 6.1	earliest → < 6.1.165	6.1.165
Linux 5.15	earliest → < 5.15.202	5.15.202
Linux 5.10	earliest → < 5.10.252	5.10.252
Linux	5.3	No fix stated

Show the 3 other branches

Product	Affected versions	Fixed in
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP 3.1	3.1.7 → latest	No fix stated
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP 3.1	3.1.7 → latest	No fix stated
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP 3.1	3.1.7 → latest	No fix stated