{"id":"CVE-2026-98877","state":"PUBLISHED","title":"irqchip/gic-v4: Don't advertise VLPIs if no ITS is probed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nirqchip/gic-v4: Don't advertise VLPIs if no ITS is probed\n\nWhen accidentally setting “kvm-arm.vgic_v4_enable=1” on a system that has\nno MSI controller device tree node and GICv4, it results a panic as\n“gic_domain” is NULL and the kernel attempts to access it.\n\n    Unable to handle kernel NULL pointer dereference at virtual address 0000000000000028\n    Mem abort info:\n      ESR = 0x0000000096000006\n\n    CPU: 1 UID: 0 PID: 295 Comm: lkvm-static Not tainted 7.1.0-rc4-ge3f15ad3970e #5 PREEMPT\n    Hardware name: linux,dummy-virt (DT)\n    pstate: 81402005 (Nzcv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)\n    pc : __irq_domain_instantiate+0x1d4/0x578\n    lr : __irq_domain_instantiate+0x1cc/0x578\n\nSet vLPI support to false at init time if the host has no ITS, so it\npropagates properly to kvm_vgic_global_state.has_gicv4.","publishedAt":"2026-10-23T11:37:23.678Z","updatedAt":"2026-10-26T06:55:59.697Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a75460547e13c99762c2f9dbfcdd13ad416f91c5","status":"affected","lessThan":"3e4cae9f1472ba3c9fe87edee24074618b51f537","versionType":"git"},{"version":"a75460547e13c99762c2f9dbfcdd13ad416f91c5","status":"affected","lessThan":"a2508b8855acc96abe69be73b41b672f1ef12516","versionType":"git"},{"version":"a75460547e13c99762c2f9dbfcdd13ad416f91c5","status":"affected","lessThan":"e79934064be85fc9a3a6434da857307d8b78e33d","versionType":"git"},{"version":"a75460547e13c99762c2f9dbfcdd13ad416f91c5","status":"affected","lessThan":"4761493dd663443f7353c184e6fa16e1cb3ac5a1","versionType":"git"},{"version":"a75460547e13c99762c2f9dbfcdd13ad416f91c5","status":"affected","lessThan":"ab233119a19716b8f33e73ea7e092e0eb353cfbf","versionType":"git"},{"version":"a75460547e13c99762c2f9dbfcdd13ad416f91c5","status":"affected","lessThan":"c8a911b3b07baa0aeb3dbc4e16a4670bd21bed40","versionType":"git"},{"version":"a75460547e13c99762c2f9dbfcdd13ad416f91c5","status":"affected","lessThan":"e61654fbc3bc5d07ec9fafe29f33e19b2b5d0fd5","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/irqchip/irq-gic-v3-its.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.15","versionType":"semver"},{"version":"5.10.271","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.222","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.111","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/irqchip/irq-gic-v3-its.c"]}],"references":["https://git.kernel.org/stable/c/3e4cae9f1472ba3c9fe87edee24074618b51f537","https://git.kernel.org/stable/c/a2508b8855acc96abe69be73b41b672f1ef12516","https://git.kernel.org/stable/c/e79934064be85fc9a3a6434da857307d8b78e33d","https://git.kernel.org/stable/c/4761493dd663443f7353c184e6fa16e1cb3ac5a1","https://git.kernel.org/stable/c/ab233119a19716b8f33e73ea7e092e0eb353cfbf","https://git.kernel.org/stable/c/c8a911b3b07baa0aeb3dbc4e16a4670bd21bed40","https://git.kernel.org/stable/c/e61654fbc3bc5d07ec9fafe29f33e19b2b5d0fd5"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98877.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98877","state":"PUBLISHED","datePublished":"2026-10-23T11:37:23.678Z","dateUpdated":"2026-10-26T06:55:59.697Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.377Z"},"containers":{"cna":{"title":"irqchip/gic-v4: Don't advertise VLPIs if no ITS is probed","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nirqchip/gic-v4: Don't advertise VLPIs if no ITS is probed\n\nWhen accidentally setting “kvm-arm.vgic_v4_enable=1” on a system that has\nno MSI controller device tree node and GICv4, it results a panic as\n“gic_domain” is NULL and the kernel attempts to access it.\n\n    Unable to handle kernel NULL pointer dereference at virtual address 0000000000000028\n    Mem abort info:\n      ESR = 0x0000000096000006\n\n    CPU: 1 UID: 0 PID: 295 Comm: lkvm-static Not tainted 7.1.0-rc4-ge3f15ad3970e #5 PREEMPT\n    Hardware name: linux,dummy-virt (DT)\n    pstate: 81402005 (Nzcv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)\n    pc : __irq_domain_instantiate+0x1d4/0x578\n    lr : __irq_domain_instantiate+0x1cc/0x578\n\nSet vLPI support to false at init time if the host has no ITS, so it\npropagates properly to kvm_vgic_global_state.has_gicv4."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a75460547e13c99762c2f9dbfcdd13ad416f91c5","status":"affected","lessThan":"3e4cae9f1472ba3c9fe87edee24074618b51f537","versionType":"git"},{"version":"a75460547e13c99762c2f9dbfcdd13ad416f91c5","status":"affected","lessThan":"a2508b8855acc96abe69be73b41b672f1ef12516","versionType":"git"},{"version":"a75460547e13c99762c2f9dbfcdd13ad416f91c5","status":"affected","lessThan":"e79934064be85fc9a3a6434da857307d8b78e33d","versionType":"git"},{"version":"a75460547e13c99762c2f9dbfcdd13ad416f91c5","status":"affected","lessThan":"4761493dd663443f7353c184e6fa16e1cb3ac5a1","versionType":"git"},{"version":"a75460547e13c99762c2f9dbfcdd13ad416f91c5","status":"affected","lessThan":"ab233119a19716b8f33e73ea7e092e0eb353cfbf","versionType":"git"},{"version":"a75460547e13c99762c2f9dbfcdd13ad416f91c5","status":"affected","lessThan":"c8a911b3b07baa0aeb3dbc4e16a4670bd21bed40","versionType":"git"},{"version":"a75460547e13c99762c2f9dbfcdd13ad416f91c5","status":"affected","lessThan":"e61654fbc3bc5d07ec9fafe29f33e19b2b5d0fd5","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/irqchip/irq-gic-v3-its.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.15","versionType":"semver"},{"version":"5.10.271","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.222","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.111","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/irqchip/irq-gic-v3-its.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/3e4cae9f1472ba3c9fe87edee24074618b51f537"},{"url":"https://git.kernel.org/stable/c/a2508b8855acc96abe69be73b41b672f1ef12516"},{"url":"https://git.kernel.org/stable/c/e79934064be85fc9a3a6434da857307d8b78e33d"},{"url":"https://git.kernel.org/stable/c/4761493dd663443f7353c184e6fa16e1cb3ac5a1"},{"url":"https://git.kernel.org/stable/c/ab233119a19716b8f33e73ea7e092e0eb353cfbf"},{"url":"https://git.kernel.org/stable/c/c8a911b3b07baa0aeb3dbc4e16a4670bd21bed40"},{"url":"https://git.kernel.org/stable/c/e61654fbc3bc5d07ec9fafe29f33e19b2b5d0fd5"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-26T06:55:59.697Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"5.10.271"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"5.15.222"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"6.1.189"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"6.6.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"6.12.111"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"6.18.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.15","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}