{"apiVersion":"1.0","identifier":"CVE-2026-72220","description":"In the Linux kernel, the following vulnerability has been resolved: sunrpc: harden rq_procinfo lifecycle to prevent double-free The svc_release_rqst() function executes the callback inside rqstp->rq_procinfo->pc_release. However, if a worker thread begins processing a new request and encounters an early error path (e.g., unsupported protocol, short frame, or bad auth) before a valid rq_procinfo is installed, a stale release hook can be re-triggered against reused state from the previous RPC, resulting in a double-free or use-after-free vulnerability. Harden the lifecycle of rq_procinfo by: 1. Ensuring svc_release_rqst() always clears rq_procinfo after the optional pc_release() call, regardless of whether the hook exists. 2. Explicitly clearing rq_procinfo at request entry in svc_process() before any early decode or drop paths. 3. Ensuring svc_process_bc() does the same at backchannel entry. This guarantees that error flows will not encounter a non-NULL stale rq_procinfo pointer when there is nothing to release.","publishedAt":"2026-08-15T06:21:40","lastModifiedAt":"2026-08-17T06:18:23","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-72220","cvssScore":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","epssProbability":0.00588,"riskScore":1.03,"affectedProduct":"linux","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-72220","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-72220","en":"https://www.redsauce.net/en/cves/CVE-2026-72220","fr":"https://www.redsauce.net/fr/cves/CVE-2026-72220","pt":"https://www.redsauce.net/pt/cves/CVE-2026-72220","de":"https://www.redsauce.net/de/cves/CVE-2026-72220","sk":"https://www.redsauce.net/sk/cves/CVE-2026-72220","el":"https://www.redsauce.net/el/cves/CVE-2026-72220"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-72220"}}