{"id":"CVE-2026-23242","summary":"RDMA/siw: Fix potential NULL pointer dereference in header processing","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/siw: Fix potential NULL pointer dereference in header processing\n\nIf siw_get_hdr() returns -EINVAL before set_rx_fpdu_context(),\nqp-\u003erx_fpdu can be NULL. The error path in siw_tcp_rx_data()\ndereferences qp-\u003erx_fpdu-\u003emore_ddp_segs without checking, which\nmay lead to a NULL pointer deref. Only check more_ddp_segs when\nrx_fpdu is present.\n\nKASAN splat:\n[  101.384271] KASAN: null-ptr-deref in range [0x00000000000000c0-0x00000000000000c7]\n[  101.385869] RIP: 0010:siw_tcp_rx_data+0x13ad/0x1e50","modified":"2026-04-02T13:12:17.020965Z","published":"2026-03-18T10:05:05.108Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23242.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/14ab3da122bd18920ad57428f6cf4fade8385142"},{"type":"WEB","url":"https://git.kernel.org/stable/c/714c99e1dc8f85f446e05be02ba83972e981a817"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8564dcc12fbb372d984ab45768cae9335777b274"},{"type":"WEB","url":"https://git.kernel.org/stable/c/87b7a036d2c73d5bb3ae2d47dee23de465db3355"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ab61841633d10e56a58c1493a262f0d02dba2f5e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ab957056192d6bd068b3759cb2077d859cca01f0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ce025f7f5d070596194315eb2e4e89d568b8a755"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ffba40b67663567481fa8a1ed5d2da36897c175d"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23242.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23242"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"8b6a361b8c482f22ac99c3273285ff16b23fba91"},{"fixed":"ab61841633d10e56a58c1493a262f0d02dba2f5e"},{"fixed":"8564dcc12fbb372d984ab45768cae9335777b274"},{"fixed":"ab957056192d6bd068b3759cb2077d859cca01f0"},{"fixed":"ffba40b67663567481fa8a1ed5d2da36897c175d"},{"fixed":"87b7a036d2c73d5bb3ae2d47dee23de465db3355"},{"fixed":"714c99e1dc8f85f446e05be02ba83972e981a817"},{"fixed":"ce025f7f5d070596194315eb2e4e89d568b8a755"},{"fixed":"14ab3da122bd18920ad57428f6cf4fade8385142"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23242.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.3.0"},{"fixed":"5.10.252"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.202"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.165"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.128"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.75"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.14"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23242.json"}}],"schema_version":"1.7.5"}