CVE-2026-98469: Linux vulnerability

CVE-2026-98469: KVM: arm64: Fix AArch32 DBGBXVR<n> handling

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.

UnknownCVSS not scoredNot KEV-listedUpdatedOct 19, 2026, 09:20 UTC (UTC+00:00)

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Oct 18, 2026, 15:15 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors

3Timeline events

0ADP providers

4Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
Sep 25, 2026, 10:25 UTC (UTC+00:00)
CVE publishedCVE Program
The CVE record was published.
Oct 18, 2026, 15:15 UTC (UTC+00:00)
CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
Oct 19, 2026, 09:20 UTC (UTC+00:00)

Source materials

CVE List V5 sourceCVE List V5
https://git.kernel.org/stable/c/8530a05b304d312fe7dfbc5df7d3e87cc31b256aCVE reference, Linux
https://git.kernel.org/stable/c/af6813d16ace2765011ca1c567be86ade1d1ee8eCVE reference, Linux
https://git.kernel.org/stable/c/6b1bca1b1ab77f60a62087337bfe6e2f0efb9e6dCVE reference, Linux

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

LinuxLinux3ce9f3357e9e099f02feaa002769eb99ef1138cd, 3ce9f3357e9e099f02feaa002769eb99ef1138cd, 3ce9f3357e9e099f02feaa002769eb99ef1138cdunaffected

LinuxLinux6.14, 0, 6.18.55, 7.2.9, 7.3affected

Weakness

CWE details

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