CVE-2026-23242

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinux8b6a361b8c482f22ac99c3273285ff16b23fba91 < ab61841633d10e56a58c1493a262f0d02dba2f5eaffected
LinuxLinux8b6a361b8c482f22ac99c3273285ff16b23fba91 < 8564dcc12fbb372d984ab45768cae9335777b274affected
LinuxLinux8b6a361b8c482f22ac99c3273285ff16b23fba91 < ab957056192d6bd068b3759cb2077d859cca01f0affected
LinuxLinux8b6a361b8c482f22ac99c3273285ff16b23fba91 < ffba40b67663567481fa8a1ed5d2da36897c175daffected
LinuxLinux8b6a361b8c482f22ac99c3273285ff16b23fba91 < 87b7a036d2c73d5bb3ae2d47dee23de465db3355affected
LinuxLinux8b6a361b8c482f22ac99c3273285ff16b23fba91 < 714c99e1dc8f85f446e05be02ba83972e981a817affected
LinuxLinux8b6a361b8c482f22ac99c3273285ff16b23fba91 < ce025f7f5d070596194315eb2e4e89d568b8a755affected
LinuxLinux8b6a361b8c482f22ac99c3273285ff16b23fba91 < 14ab3da122bd18920ad57428f6cf4fade8385142affected
LinuxLinux5.3affected
LinuxLinux0 < 5.3unaffected
LinuxLinux5.10.252 <= 5.10.*unaffected
LinuxLinux5.15.202 <= 5.15.*unaffected
LinuxLinux6.1.165 <= 6.1.*unaffected
LinuxLinux6.6.128 <= 6.6.*unaffected
LinuxLinux6.12.75 <= 6.12.*unaffected
LinuxLinux6.18.14 <= 6.18.*unaffected
LinuxLinux6.19.4 <= 6.19.*unaffected
LinuxLinux7.0 <= *unaffected

Weaknesses

References