CVE-2026-98713: Linux

Описание

Оригинално описание

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]

Засегнати продукти

• Linux Linux: f5a5a406b4b8bb6c1fc7a1e92a872bd86061a53f преди 2f4a15c52a552c5244ec27f4ca8bda855594f918; f5a5a406b4b8bb6c1fc7a1e92a872bd86061a53f преди 1113374a17d7f7d16b02ee0bbd9b1e7a60cbb087; f5a5a406b4b8bb6c1fc7a1e92a872bd86061a53f преди af3300b3a6bace925a496f3520e171c07b999c72; f5a5a406b4b8bb6c1fc7a1e92a872bd86061a53f преди 4bdd2b3a708c1feb701cb8b62feb8ad2fd77bb07
• Linux Linux: 6.9; преди 6.9; 6.12.113 до 6.12.*; 6.18.56 до 6.18.*; 7.2.10 до 7.2.*; от 7.3 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-98713
• https://nvd.nist.gov/vuln/detail/CVE-2026-98713
• https://git.kernel.org/stable/c/2f4a15c52a552c5244ec27f4ca8bda855594f918
• https://git.kernel.org/stable/c/1113374a17d7f7d16b02ee0bbd9b1e7a60cbb087
• https://git.kernel.org/stable/c/af3300b3a6bace925a496f3520e171c07b999c72
• https://git.kernel.org/stable/c/4bdd2b3a708c1feb701cb8b62feb8ad2fd77bb07