CVE-2026-23242RDMA/siw: Fix potential NULL pointer dereference in header processing
Updated under an hour ago ()
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It affects Linux and 4 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Modified
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 8b6a361b8c482f22ac99c3273285ff16b23fba91 before ab61841633d10e56a58c1493a262f0d02dba2f5e; from 8b6a361b8c482f22ac99c3273285ff16b23fba91 before 8564dcc12fbb372d984ab45768cae9335777b274; from 8b6a361b8c482f22ac99c3273285ff16b23fba91 before ab957056192d6bd068b3759cb2077d859cca01f0; from 8b6a361b8c482f22ac99c3273285ff16b23fba91 before ffba40b67663567481fa8a1ed5d2da36897c175d; from 8b6a361b8c482f22ac99c3273285ff16b23fba91 before 87b7a036d2c73d5bb3ae2d47dee23de465db3355; from 8b6a361b8c482f22ac99c3273285ff16b23fba91 before 714c99e1dc8f85f446e05be02ba83972e981a817; from 8b6a361b8c482f22ac99c3273285ff16b23fba91 before ce025f7f5d070596194315eb2e4e89d568b8a755; from 8b6a361b8c482f22ac99c3273285ff16b23fba91 before 14ab3da122bd18920ad57428f6cf4fade8385142 | CNA record |
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name) | from V3.1.6 | CISA ADP |
linux linux_kernel linux:linux_kernel | from 5.3.1 before 5.10.252; from 5.11 before 5.15.202; from 5.16 before 6.1.165; from 6.2 before 6.6.128; from 6.7 before 6.12.75; from 6.13 before 6.18.14; from 6.19 before 6.19.4; 5.3 | NVD |
References
- https://git.kernel.org/stable/c/ab61841633d10e56a58c1493a262f0d02dba2f5epatch
- https://git.kernel.org/stable/c/8564dcc12fbb372d984ab45768cae9335777b274patch
- https://git.kernel.org/stable/c/ab957056192d6bd068b3759cb2077d859cca01f0patch
- https://git.kernel.org/stable/c/ffba40b67663567481fa8a1ed5d2da36897c175dpatch
- https://git.kernel.org/stable/c/87b7a036d2c73d5bb3ae2d47dee23de465db3355patch
- https://git.kernel.org/stable/c/714c99e1dc8f85f446e05be02ba83972e981a817patch
- https://git.kernel.org/stable/c/ce025f7f5d070596194315eb2e4e89d568b8a755patch
- https://git.kernel.org/stable/c/14ab3da122bd18920ad57428f6cf4fade8385142patch
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.