Medium
net: ip/tcp: Null pointer dereference can be triggered by a race condition
A race condition during TCP connection teardown can cause tcp_recv() to operate on a connection that has already been released. If tcp_conn_search() returns NULL while processing a SYN packet, a NULL pointer derived from stale context data is passed to tcp_backlog_is_full() and dereferenced without validation, leading to a crash.
Announced Group revision 1
Original source ↗CVE-2026-5590
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-2026-5590
Zephyr
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
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/zephyrproject-rtos/zephyr",
"vendor": "zephyrproject-rtos",
"product": "Zephyr",
"versions": [
{
"status": "affected",
"version": "*",
"lessThan": "4.3.1",
"versionType": "git"
}
],
"packageName": "Zephyr",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-5590
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #32284 · Revision 1
- Added to Heist Feed
- Publisher date