CVE Explorer

CVE-2026-5590

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.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:33b258529fc70671fd42e975a42b96d23e8d6b5181481fea607f9b6bca321b25

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"defaultStatus":"unaffected","packageName":"Zephyr","product":"Zephyr","repo":"https://github.com/zephyrproject-rtos/zephyr","vendor":"zephyrproject-rtos","versions":[{"lessThanOrEqual":"4.3","status":"affected","version":"*","versionType":"git"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:1807eca27878a2b377d554f0a2e7ebca660a45c3a2cc44ca7ab797ad09b9a040 · sha256:349baba972994c0e… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:1807eca27878a2b377d554f0a2e7ebca660a45c3a2cc44ca7ab797ad09b9a040 · sha256:349baba972994c0e… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-476","description":"NULL Pointer Dereference","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:1807eca27878a2b377d554f0a2e7ebca660a45c3a2cc44ca7ab797ad09b9a040 · sha256:349baba972994c0e… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion

{"url":"https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-4vqm-pw24-g9jp"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:1807eca27878a2b377d554f0a2e7ebca660a45c3a2cc44ca7ab797ad09b9a040 · sha256:349baba972994c0e… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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