CVE-2026-89508Medium· 5.5▾ SunlitA flaw was found in the Linux kernel's RDMA/ucma component. A race condition exists in the `ucma_set_ib_path()` function when handling events concurrently with `ucma_migrate_id()`. This can allow a local attacker with access to an RDMA dev…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 30.3 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.2%
— → 4.7
none → medium
— → 4.7
none → medium
— → 7.8
none → high
7.8 → 4.7
high → medium
4.7 → 7.8
medium → high
Last analysed / modified upstream
7.8 → 5.5
high → medium
A flaw was found in the Linux kernel's RDMA/ucma component. A race condition exists in the ucma_set_ib_path() function when handling events concurrently with ucma_migrate_id(). This can allow a local attacker with access to an RDMA device to trigger a use-after-free vulnerability, potentially leading to system instability or a denial of service.
kernel: RDMA/ucma: Lock the handler in ucma_set_ib_path() — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-18.
Not affected:
Refer to the advisory for fix availability.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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