RDMA/siw: Fix potential NULL pointer dereference in header processing
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
CVE-2026-23242
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-23242
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "8b6a361b8c482f22ac99c3273285ff16b23fba91",
"lessThan": "ab61841633d10e56a58c1493a262f0d02dba2f5e",
"versionType": "git"
},
{
"status": "affected",
"version": "8b6a361b8c482f22ac99c3273285ff16b23fba91",
"lessThan": "8564dcc12fbb372d984ab45768cae9335777b274",
"versionType": "git"
},
{
"status": "affected",
"version": "8b6a361b8c482f22ac99c3273285ff16b23fba91",
"lessThan": "ab957056192d6bd068b3759cb2077d859cca01f0",
"versionType": "git"
},
{
"status": "affected",
"version": "8b6a361b8c482f22ac99c3273285ff16b23fba91",
"lessThan": "ffba40b67663567481fa8a1ed5d2da36897c175d",
"versionType": "git"
},
{
"status": "affected",
"version": "8b6a361b8c482f22ac99c3273285ff16b23fba91",
"lessThan": "87b7a036d2c73d5bb3ae2d47dee23de465db3355",
"versionType": "git"
},
{
"status": "affected",
"version": "8b6a361b8c482f22ac99c3273285ff16b23fba91",
"lessThan": "714c99e1dc8f85f446e05be02ba83972e981a817",
"versionType": "git"
},
{
"status": "affected",
"version": "8b6a361b8c482f22ac99c3273285ff16b23fba91",
"lessThan": "ce025f7f5d070596194315eb2e4e89d568b8a755",
"versionType": "git"
},
{
"status": "affected",
"version": "8b6a361b8c482f22ac99c3273285ff16b23fba91",
"lessThan": "14ab3da122bd18920ad57428f6cf4fade8385142",
"versionType": "git"
}
],
"programFiles": [
"drivers/infiniband/sw/siw/siw_qp_rx.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.3"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.3",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.252",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.202",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.165",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.128",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.75",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.14",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.4",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/infiniband/sw/siw/siw_qp_rx.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-23242
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #39826 · Revision 1
- Added to Heist Feed
- Publisher date