Deadlock Affecting rv package, versions *
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Test your applications- Snyk IDSNYK-CENTOS10-RV-17591613
- published27 Jun 2026
- disclosed25 Jun 2026
Introduced: 25 Jun 2026
NewCVE-2026-53207 (opens in a new tab)How to fix?
There is no fixed version for Centos:10 rv.
NVD Description
Note: Versions mentioned in the description apply only to the upstream rv package and not the rv 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:
mm/memory-failure: fix hugetlb_lock AA deadlock in get_huge_page_for_hwpoison
Two concurrent madvise(MADV_HWPOISON) calls on the same hugetlb page can trigger a recursive spinlock self-deadlock (AA deadlock) on hugetlb_lock when racing with a concurrent unmap:
thread#0 thread#1
madvise(folio, MADV_HWPOISON) -> poisons the folio successfully madvise(folio, MADV_HWPOISON) unmap(folio) try_memory_failure_hugetlb get_huge_page_for_hwpoison spin_lock_irq(&hugetlb_lock) <- held __get_huge_page_for_hwpoison hugetlb_update_hwpoison() -> MF_HUGETLB_FOLIO_PRE_POISONED goto out: folio_put() refcount: 1 -> 0 free_huge_folio() spin_lock_irqsave(&hugetlb_lock) -> AA DEADLOCK!
The out: path in __get_huge_page_for_hwpoison() calls folio_put() to drop the GUP reference while the hugetlb_lock is still held by the hugetlb.c wrapper get_huge_page_for_hwpoison(). If concurrent unmap has released the page table mapping reference, folio_put() drops the folio refcount to zero, triggering free_huge_folio() which attempts to re-acquire the non-recursive hugetlb_lock.
Fix this by moving hugetlb_lock acquisition from the hugetlb.c wrapper into get_huge_page_for_hwpoison(). Place spin_unlock_irq() before the folio_put() at the out: label so the folio is always released outside the lock.
[akpm@linux-foundation.org: fix race, rename label per Miaohe]
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2492821
- https://access.redhat.com/security/cve/CVE-2026-53207
- https://git.kernel.org/stable/c/3c2d42b8ee345b17a4ba56b0f6492d1ff4c1178e
- https://git.kernel.org/stable/c/77b73b54801ae7137479c141fd0473a491c1dc48
- https://git.kernel.org/stable/c/a33bfed648c10f5a1519981dbfad80841191edc8
- https://git.kernel.org/stable/c/bf7ba8f96c258c30393814491930ae4ecdc5fe5e
- https://git.kernel.org/stable/c/dd77a83915b07e2b0205adb284f08b39ae31dc4b
- https://git.kernel.org/stable/c/fc3ff42cb0cbf947e4600ae9761c3783760050e2