CVE-2026-23242
Published: March 19, 2026Last modified: April 9, 2026
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
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack Vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.167-r0) |
| 25 LTS | linux-lts | Fixed (6.12.80-r0) | |
| Stream | linux-lts | Fixed (6.12.76-r0) |
References
- https://git.kernel.org/stable/c/14ab3da122bd18920ad57428f6cf4fade8385142
- https://git.kernel.org/stable/c/714c99e1dc8f85f446e05be02ba83972e981a817
- https://git.kernel.org/stable/c/8564dcc12fbb372d984ab45768cae9335777b274
- https://git.kernel.org/stable/c/87b7a036d2c73d5bb3ae2d47dee23de465db3355
- https://git.kernel.org/stable/c/ab61841633d10e56a58c1493a262f0d02dba2f5e
- https://git.kernel.org/stable/c/ab957056192d6bd068b3759cb2077d859cca01f0
- https://git.kernel.org/stable/c/ce025f7f5d070596194315eb2e4e89d568b8a755
- https://git.kernel.org/stable/c/ffba40b67663567481fa8a1ed5d2da36897c175d