{"id":"CVE-2022-50135","title":"RDMA/rxe: Fix BUG: KASAN: null-ptr-deref in rxe_qp_do_cleanup","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Fix BUG: KASAN: null-ptr-deref in rxe_qp_do_cleanup\n\nThe function rxe_create_qp calls rxe_qp_from_init. If some error\noccurs, the error handler of function rx…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 4703b4f0d94a5f887297713a2f6c2916a1ef08fd < 8598b9d0a364c1663c96fc0fab9df0d36c809aea","Linux >= 4703b4f0d94a5f887297713a2f6c2916a1ef08fd < 37da51efe6eaa0560f46803c8c436a48a2084da7","Linux 5.19"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T19:55:05.892280Z"},"published":"2025-06-18","updated":"2026-11-05","sourceUpdated":"2026-11-05T20:00:18.324Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2022-50135","references":[{"url":"https://git.kernel.org/stable/c/8598b9d0a364c1663c96fc0fab9df0d36c809aea"},{"url":"https://git.kernel.org/stable/c/37da51efe6eaa0560f46803c8c436a48a2084da7"}],"tags":["cve.org"],"epss":0.00209,"epssPercentile":0.11123,"ingestedAt":"2026-11-05T22:38:31.685Z","slug":"CVE-2022-50135","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Fix BUG: KASAN: null-ptr-deref in rxe_qp_do_cleanup\n\nThe function rxe_create_qp calls rxe_qp_from_init. If some error\noccurs, the error handler of function rxe_qp_from_init will set\nboth scq and rcq to NULL.\n\nThen rxe_create_qp calls rxe_put to handle qp. In the end,\nrxe_qp_do_cleanup is called by rxe_put. rxe_qp_do_cleanup directly\naccesses scq and rcq before checking them. This will cause\nnull-ptr-deref error.\n\nThe call graph is as below:\n\nrxe_create_qp {\n  ...\n  rxe_qp_from_init {\n    ...\n  err1:\n    ...\n    qp->rcq = NULL;  <---rcq is set to NULL\n    qp->scq = NULL;  <---scq is set to NULL\n    ...\n  }\n\nqp_init:\n  rxe_put{\n    ...\n    rxe_qp_do_cleanup {\n      ...\n      atomic_dec(&qp->scq->num_wq); <--- scq is accessed\n      ...\n      atomic_dec(&qp->rcq->num_wq); <--- rcq is accessed\n    }\n}\n\n## Affected\n\n- `Linux >= 4703b4f0d94a5f887297713a2f6c2916a1ef08fd < 8598b9d0a364c1663c96fc0fab9df0d36c809aea`\n- `Linux >= 4703b4f0d94a5f887297713a2f6c2916a1ef08fd < 37da51efe6eaa0560f46803c8c436a48a2084da7`\n- `Linux 5.19`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}