{"apiVersion":"1.0","identifier":"CVE-2026-74436","description":"In the Linux kernel, the following vulnerability has been resolved: rxrpc: serialize kernel accept preallocation with socket teardown rxrpc_kernel_charge_accept() reads rx->backlog without any socket/backlog synchronization and passes that raw pointer into rxrpc_service_prealloc_one(). A concurrent rxrpc_discard_prealloc() sets rx->backlog = NULL and frees the backlog rings, so a kernel preallocation worker can keep using a freed struct rxrpc_backlog while updating *_backlog_head/tail and array slots. Serialize the state check and backlog lookup with the socket lock, and reject kernel preallocation once teardown has disabled listening or discarded the service backlog.","publishedAt":"2026-08-15T06:22:45","lastModifiedAt":"2026-08-23T13:16:43","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74436","cvssScore":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","epssProbability":0.00399,"riskScore":1.02,"affectedProduct":"Linux kernel","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-74436","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-74436","en":"https://www.redsauce.net/en/cves/CVE-2026-74436","fr":"https://www.redsauce.net/fr/cves/CVE-2026-74436","pt":"https://www.redsauce.net/pt/cves/CVE-2026-74436","de":"https://www.redsauce.net/de/cves/CVE-2026-74436","sk":"https://www.redsauce.net/sk/cves/CVE-2026-74436","el":"https://www.redsauce.net/el/cves/CVE-2026-74436"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-74436"}}