Answer in brief
CVE-2026-98713 records a Unknown severity vulnerability in KVM: arm64: Apply the fine-grained UNDEFs without FEAT_FGT. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=f5a5a406b4b8bb6c1fc7a1e92a872bd86061a53f <2f4a15c52a552c5244ec27f4ca8bda855594f918 || >=f5a5a406b4b8bb6c1fc7a1e92a872bd86061a53f <1113374a17d7f7d16b02ee0bbd9b1e7a60cbb087 || >=f5a5a406b4b8bb6c1fc7a1e92a872bd86061a53f <af3300b3a6bace925a496f3520e171c07b999c72 || >=f5a5a406b4b8bb6c1fc7a1e92a872bd86061a53f <4bdd2b3a708c1feb701cb8b62feb8ad2fd77bb07 | 2f4a15c52a552c5244ec27f4ca8bda855594f918, 1113374a17d7f7d16b02ee0bbd9b1e7a60cbb087, af3300b3a6bace925a496f3520e171c07b999c72, 4bdd2b3a708c1feb701cb8b62feb8ad2fd77bb07 |
| Linux/Linuxgeneric | 6.9 | Not reported |
Published upstream
Oct 18, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 18, 2026
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Apply the fine-grained UNDEFs without FEAT_FGT FGUs don't actually require hardware support, so don't gate fgt trap config insertion on FGT. This is the only action required to allow FGUs always, as kvm_calculate_traps() already computes the FGU bits with or without FEAT_FGT. This also fixes a spurious WARN when a TLBI OS is run on a guest in vEL1 without FEAT_TLBIOS on non FEAT_FGT hardware. In this configuration the course-grained HCR_EL2.TTLBOS trap reaches the handler handle_tlbi_el1(), which expects an EL1 TLBI only from vEL2. With FGUs enabled the UNDEF will be injected without needing the specific handler. [oliver: Take Wei-Lin's suggested changelog]
Quoted source text, attributed separately from HOL analysis.