{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-21T18:07:26.616","vulnerabilities":[{"cve":{"id":"CVE-2026-23206","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2026-02-14T17:15:58.507","lastModified":"2026-03-19T16:34:27.203","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ndpaa2-switch: prevent ZERO_SIZE_PTR dereference when num_ifs is zero\n\nThe driver allocates arrays for ports, FDBs, and filter blocks using\nkcalloc() with ethsw->sw_attr.num_ifs as the element count. When the\ndevice reports zero interfaces (either due to hardware configuration\nor firmware issues), kcalloc(0, ...) returns ZERO_SIZE_PTR (0x10)\ninstead of NULL.\n\nLater in dpaa2_switch_probe(), the NAPI initialization unconditionally\naccesses ethsw->ports[0]->netdev, which attempts to dereference\nZERO_SIZE_PTR (address 0x10), resulting in a kernel panic.\n\nAdd a check to ensure num_ifs is greater than zero after retrieving\ndevice attributes. This prevents the zero-sized allocations and\nsubsequent invalid pointer dereference."},{"lang":"es","value":"En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ndpaa2-switch: evitar la desreferencia de ZERO_SIZE_PTR cuando num_ifs es cero\n\nEl controlador asigna arreglos para puertos, FDBs y bloques de filtro usando kcalloc() con ethsw->sw_attr.num_ifs como el recuento de elementos. Cuando el dispositivo reporta cero interfaces (ya sea debido a la configuración del hardware o a problemas de firmware), kcalloc(0, ...) devuelve ZERO_SIZE_PTR (0x10) en lugar de NULL.\n\nMás tarde en dpaa2_switch_probe(), la inicialización de NAPI accede incondicionalmente a ethsw->ports[0]->netdev, lo que intenta desreferenciar ZERO_SIZE_PTR (dirección 0x10), resultando en un pánico del kernel.\n\nAñadir una verificación para asegurar que num_ifs sea mayor que cero después de recuperar los atributos del dispositivo. Esto evita las asignaciones de tamaño cero y la subsiguiente desreferencia de puntero inválido."}],"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":"CWE-476"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"5.15.200","matchCriteriaId":"87005985-2B34-4396-9F44-650DB23E2D23"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.16","versionEndExcluding":"6.1.163","matchCriteriaId":"E9C856E1-4308-4C0B-A973-7DD375DF66C4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.6.124","matchCriteriaId":"76183B9F-CABE-4E21-A3E3-F0EBF99DC3C7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.7","versionEndExcluding":"6.12.70","matchCriteriaId":"F3791390-0628-4808-99EF-1ED8ABF60933"},{"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/155eb99aff2920153bf21217ae29565fff81e6af","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/2fcccca88456b592bd668db13aa1d29ed257ca2b","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/4acc40db06ffd0fd92683505342b00c8a7394c60","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/80165ff16051448d6f840585ebe13f2400415df3","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/b97415c4362f739e25ec6f71012277086fabdf6f","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]},{"url":"https://git.kernel.org/stable/c/ed48a84a72fefb20a82dd90a7caa7807e90c6f66","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"]}]}}]}