Advisory [CVE-2026-53128] Balance RCU calls in drbd_adm_dump_devices
This security Red Hat Linux advisory covers CVE-2026-53128.
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Summary
In the Linux kernel, the following vulnerability has been resolved: drbd: Balance RCU calls in drbd_adm_dump_devices() Make drbd_adm_dump_devices() call rcu_read_lock() before rcu_read_unlock() is called. This has been detected by the Clang thread-safety analyzer.
Specifically, an imbalance in RCU (Read-Copy Update) calls within the `drbd_adm_dump_devices()` function could occur, where `rcu_read_lock()` was not properly invoked before `rcu_read_unlock()`. This concurrency issue, identified by a thread-safety analyzer, may lead to system instability or a denial of service.
Red Hat severity: not rated. Weakness: CWE-832.
Red Hat lists Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9 as not affected.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · medium-confidence parse· fetched 9 days ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · medium-confidence parse· fetched 9 days ago·verify at source
Mitigation
The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.
Official advisory · medium-confidence parse· fetched 9 days ago·verify at source
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