Threats Tagged 'ghsa-hhf9-cxvj-3mv7'
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Threats Tagged 'ghsa-hhf9-cxvj-3mv7'
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In the Linux kernel, the following vulnerability has been resolved: keys: Pin request_key_auth payload in instantiate paths A: request_key() B:… (CVE-2026-63823)CVE-2026-63823 0 In the Linux kernel, the following vulnerability has been resolved: keys: Pin request_key_auth payload in instantiate paths A: request_key() B: KEYCTL_INSTANTIATE_IOV ================ ========================= create auth key store rka in auth key wait for helper get auth key load rka from auth key copy user payload sleep on #PF helper completed detach and free rka destroy auth key wake up use rka->target_key **USE-AFTER-FREE** Give request_key_auth payloads a refcount. Take a payload reference while authkey->sem stabilizes the payload and revocation state. Hold that reference across the instantiate and reject paths. Drop the auth key owning reference from revoke and destroy. [jarkko: Replaced the first two paragraphs of text with an actual concurrency scenario.] Join the discussion | GCVE Database | 07/19/2026, 12:30:24 UTC Added: 07/19/2026, 19:38:21 UTC |
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