The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applicationsThere is no fixed version for Centos:10 kernel-debug-modules-core.
Note: Versions mentioned in the description apply only to the upstream kernel-debug-modules-core package and not the kernel-debug-modules-core package as distributed by Centos.
See How to fix? for Centos:10 relevant fixed versions and status.
In the Linux kernel, the following vulnerability has been resolved:
bpf: Fix NMI/tracepoint re-entry deadlock on lru locks
NMI and tracepoint BPF programs can re-enter the per-CPU or global LRU lock that bpf_lru_pop_free()/push_free() already hold on the same CPU, AA-deadlocking. Lockdep reports "inconsistent {INITIAL USE} -> {IN-NMI}" on &l->lock (syzbot c69a0a2c816716f1e0d5) and "possible recursive locking detected" on &loc_l->lock (syzbot 18b26edb69b2e19f3b33).
Prior trylock and rqspinlock based fixes (see links) were nacked because compromised on reliability.
This patch converts every LRU lock site to rqspinlock_t and adds a recovery path for some failure windows to avoid node leaks.
Failure recovery:
*_pop_free top-level: return NULL; prealloc_lru_pop() already treats that as no-free-element (-ENOMEM).
Cross-CPU steal: skip the victim's locked loc_l, try next CPU.
Post-steal local lock fail: publish stolen node to lockless per-CPU free_llist; next pop on this CPU picks it up.
push_free fail: mark node pending_free=1. __local_list_flush(), __local_list_pop_pending() reclaim the node from pending_list. __bpf_lru_list_shrink_inactive() reclaims the node from inactive list. Nodes from active list are reclaimed by __bpf_lru_list_shrink() or after __bpf_lru_list_rotate_active() demotes it to the inactive.