CVE-2026-72069
CVE-2026-72069: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Red Hat
1 advisory- Advisory severityHigh7.0
High [CVE-2026-72069] Fix the incorrect RCU protection in rt_spin_unlock
CVE-2026-72069Source published Source updated
In the Linux kernel, the following vulnerability has been resolved: locking/rt: Fix the incorrect RCU protection in rt_spin_unlock() rt_spin_unlock() releases the RCU protection before unlocking the lock. That opens the door for the following UAF scenario: T1T2 spin_lock(&p->lock);rcu_read_lock(); invalidate(p);p = rcu_dereference(ptr); rcu_assign_pointer(ptr, NULL);if (!p) return; spin_unlock(&p->lock);spin_lock(&p->lock) lock(&lock->lock); rcu_read_lock(); kfree_rcu(p);rcu_read_unlock();.... spin_unlock(&p->lock) rcu_read_unlock(); // Ends grace period rcu_do_batch() kfree(p); UAF -> rt_mutex_cmpxchg_release(&lock->lock...) Regular spinlocks keep preemption disabled accross the unlock operation, which provides full RCU protection, but the RT substitution fails to resemble that. Same…
- Affected products in this advisory
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 9
- Red Hat package: kernel-rt
- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- kernel-0:6.12.0-211.50.1.el10_2
- kernel-0:5.14.0-687.44.1.el9_8
- RHSA-2026:61887
- RHSA-2026:63129
- Mitigation guidance
- No mitigation guidance extracted; consult the source.
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