CVE-2026-98469: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Fix AArch32 DBGBXVR<n> handling The consolidation of the breakpoint and watchpoint register accessors switched DBGBXVR<n> from trap_bvr() to trap_dbg_wb_reg(). The latter selects backing storage with demux_wb_reg(), which only handles Op2 values 4 through 7. Since DBGBXVR<n> uses Op2 1, an AArch32 guest access hits KVM_BUG_ON() and marks the VM dead. DBGBXVR<n> aliases DBGBVR<n>_EL1[63:32], and its AA32(HI) descriptor already selects the upper half. Map Op2 1 to dbg_bvr[] alongside Op2 4, restoring the pre-regression behavior.

Засегнати продукти

• Linux Linux: 3ce9f3357e9e099f02feaa002769eb99ef1138cd преди 8530a05b304d312fe7dfbc5df7d3e87cc31b256a; 3ce9f3357e9e099f02feaa002769eb99ef1138cd преди af6813d16ace2765011ca1c567be86ade1d1ee8e; 3ce9f3357e9e099f02feaa002769eb99ef1138cd преди 6b1bca1b1ab77f60a62087337bfe6e2f0efb9e6d
• Linux Linux: 6.14; преди 6.14; 6.18.55 до 6.18.*; 7.2.9 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-2026-98469
• https://nvd.nist.gov/vuln/detail/CVE-2026-98469
• https://git.kernel.org/stable/c/8530a05b304d312fe7dfbc5df7d3e87cc31b256a
• https://git.kernel.org/stable/c/af6813d16ace2765011ca1c567be86ade1d1ee8e
• https://git.kernel.org/stable/c/6b1bca1b1ab77f60a62087337bfe6e2f0efb9e6d