{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-06-02T15:01:31.789","vulnerabilities":[{"cve":{"id":"CVE-2026-23215","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2026-02-18T15:18:42.843","lastModified":"2026-03-18T20:30:20.190","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nx86/vmware: Fix hypercall clobbers\n\nFedora QA reported the following panic:\n\n  BUG: unable to handle page fault for address: 0000000040003e54\n  #PF: supervisor write access in kernel mode\n  #PF: error_code(0x0002) - not-present page\n  Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS edk2-20251119-3.fc43 11/19/2025\n  RIP: 0010:vmware_hypercall4.constprop.0+0x52/0x90\n  ..\n  Call Trace:\n   vmmouse_report_events+0x13e/0x1b0\n   psmouse_handle_byte+0x15/0x60\n   ps2_interrupt+0x8a/0xd0\n   ...\n\nbecause the QEMU VMware mouse emulation is buggy, and clears the top 32\nbits of %rdi that the kernel kept a pointer in.\n\nThe QEMU vmmouse driver saves and restores the register state in a\n\"uint32_t data[6];\" and as a result restores the state with the high\nbits all cleared.\n\nRDI originally contained the value of a valid kernel stack address\n(0xff5eeb3240003e54).  After the vmware hypercall it now contains\n0x40003e54, and we get a page fault as a result when it is dereferenced.\n\nThe proper fix would be in QEMU, but this works around the issue in the\nkernel to keep old setups working, when old kernels had not happened to\nkeep any state in %rdi over the hypercall.\n\nIn theory this same issue exists for all the hypercalls in the vmmouse\ndriver; in practice it has only been seen with vmware_hypercall3() and\nvmware_hypercall4().  For now, just mark RDI/RSI as clobbered for those\ntwo calls.  This should have a minimal effect on code generation overall\nas it should be rare for the compiler to want to make RDI/RSI live\nacross hypercalls."},{"lang":"es","value":"En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nx86/vmware: Solución para las sobrescrituras de hiperllamadas\n\nFedora QA informó el siguiente pánico:\n\n  BUG: unable to handle page fault for address: 0000000040003e54\n  #PF: supervisor write access in kernel mode\n  #PF: error_code(0x0002) - not-present page\n  Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS edk2-20251119-3.fc43 11/19/2025\n  RIP: 0010:vmware_hypercall4.constprop.0+0x52/0x90\n  ..\n  Call Trace:\n   vmmouse_report_events+0x13e/0x1b0\n   psmouse_handle_byte+0x15/0x60\n   ps2_interrupt+0x8a/0xd0\n   ...\n\nporque la emulación de ratón QEMU VMware tiene errores y borra los 32 bits superiores de %rdi donde el kernel mantenía un puntero.\n\nEl controlador QEMU vmmouse guarda y restaura el estado del registro en un 'uint32_t data[6];' y, como resultado, restaura el estado con todos los bits altos borrados.\n\nRDI originalmente contenía el valor de una dirección de pila de kernel válida (0xff5eeb3240003e54). Después de la hiperllamada de vmware, ahora contiene 0x40003e54, y obtenemos un fallo de página como resultado cuando es desreferenciado.\n\nLa solución adecuada estaría en QEMU, pero esto evita el problema en el kernel para mantener las configuraciones antiguas funcionando, cuando los kernels antiguos no habían guardado ningún estado en %rdi durante la hiperllamada.\n\nEn teoría, este mismo problema existe para todas las hiperllamadas en el controlador vmmouse; en la práctica, solo se ha visto con vmware_hypercall3() y vmware_hypercall4(). Por ahora, simplemente marca RDI/RSI como sobrescritos para esas dos llamadas. Esto debería tener un efecto mínimo en la generación de código en general, ya que debería ser raro que el compilador quiera mantener RDI/RSI activos a través de hiperllamadas."}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"NVD-CWE-noinfo"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11","versionEndExcluding":"6.12.70","matchCriteriaId":"4CF24CBE-557F-47D8-9FF4-305CAB4A0A36"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.18.10","matchCriteriaId":"7156C23F-009E-4D05-838C-A2DA417B5B8D"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*","matchCriteriaId":"17B67AA7-40D6-4AFA-8459-F200F3D7CFD1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*","matchCriteriaId":"C47E4CC9-C826-4FA9-B014-7FE3D9B318B2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*","matchCriteriaId":"F71D92C0-C023-48BD-B3B6-70B638EEE298"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*","matchCriteriaId":"13580667-0A98-40CC-B29F-D12790B91BDB"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*","matchCriteriaId":"CAD1FED7-CF48-47BF-AC7D-7B6FA3C065FC"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:*","matchCriteriaId":"3EF854A1-ABB1-4E93-BE9A-44569EC76C0D"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.19:rc7:*:*:*:*:*:*","matchCriteriaId":"F5DC0CA6-F0AF-4DDF-A882-3DADB9A886A7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.19:rc8:*:*:*:*:*:*","matchCriteriaId":"EB5B7DFC-C36B-45D8-922C-877569FDDF43"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/2687c848e57820651b9f69d30c4710f4219f7dbf","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/2f467a92df61eb516a4ec36ee16234dd4e5ccf00","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/feb603a69f830acb58f78d604f0c29e63cd38f87","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]}]}}]}