CVE-2026-89919: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: keyop: use mmu_lock to read gmap->asce Every other dat_* consumer in this file (kvm_s390_get_skeys, set_skeys, get_cmma_bits, set_cmma_bits, MEM_CLR_CMMA, kvm_s390_fixup_prefix, kvm_test_age_gfn, kvm_age_gfn) reads kvm->arch.gmap->asce *inside* the mmu_lock read-side. keyop is the only outlier. gmap->asce is mutated under write_lock(mmu_lock) by gmap_set_limit() and keyop might use a stale asce value for walking as KVM_S390_KEYOP and KVM_S390_VM_MEM_LIMIT_SIZE can run concurrently. This can result in memory corruption.

Засегнати продукти

• Linux Linux: 0ee4ddc1647b8b3b9e7a94d798a1774a764428c1 преди ae452b990e0544425f77045351c56e77158858e7; 0ee4ddc1647b8b3b9e7a94d798a1774a764428c1 преди da07a751efa4583385f9f0f47113549fe8871242
• Linux Linux: 7.0; преди 7.0; 7.2.5 до 7.2.*; от 7.3 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-89919
• https://nvd.nist.gov/vuln/detail/CVE-2026-89919
• https://git.kernel.org/stable/c/ae452b990e0544425f77045351c56e77158858e7
• https://git.kernel.org/stable/c/da07a751efa4583385f9f0f47113549fe8871242