{"id":"CVE-2026-99287","aliases":[],"cve":{"records":[{"id":"CVE-2026-99287","source":"Linux","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-09-25T10:25:14.405Z","published":"2026-11-10T18:16:54.253Z","modified":"2026-11-10T21:05:27.340Z"}],"publishers":[{"name":"Linux","role":"CNA","organizationId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","modified":"2026-11-10T18:16:54.253Z"},{"name":"CVE","role":"ADP","organizationId":"af854a3a-2127-422b-91ae-364da2661108","modified":"2026-11-10T21:05:27.340Z"}],"references":[{"url":"https://git.kernel.org/stable/c/87fd475dc4e354088f6534285388e7b061f54b35","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/c5f54af611ff6fe1d53fa05d8e87b469dc56122b","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/e7ba61734d6ad6adfd5bf617052e590743211669","tags":[],"source":"Linux"},{"url":"http://www.openwall.com/lists/oss-security/2026/11/10/26","tags":[],"source":"CVE"},{"url":"http://xenbits.xen.org/xsa/advisory-532.html","tags":[],"source":"CVE"}],"weaknesses":[],"applicability":[{"source":"Linux","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"6.12.117"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"6.18.63"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.5","versionEndExcluding":"7.3.4"}]}]}]}],"prioritization":[]},"title":"xen-netback: Zero out sring pointers on unmap","titleSource":"Linux","descriptionSource":"Linux","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nxen-netback: Zero out sring pointers on unmap\n\nIf xenvif_map_frontend_data_rings() fails when a ring is already mapped,\nit unmaps them via xenvif_unmap_frontend_data_rings() which keeps the\nring pointers unchanged. xenvif_connect_data()'s cleanup path calls\nxenvif_disconnect_queue() which in turn calls\nxenvif_unmap_frontend_data_rings() again, which will attempt to unmap the\npointers a second time.\n\nZero out the ring pointers after they are unmapped to avoid this issue.\n\nThis is XSA-532","score":null,"severity":"unknown","published":"2026-11-10T18:16:54.253Z","modified":"2026-11-10T21:05:27.340Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"2ac061ce97f413bfbbdd768f7d2e0fda2e8170df","status":"affected","lessThan":"87fd475dc4e354088f6534285388e7b061f54b35","versionType":"git"},{"version":"2ac061ce97f413bfbbdd768f7d2e0fda2e8170df","status":"affected","lessThan":"c5f54af611ff6fe1d53fa05d8e87b469dc56122b","versionType":"git"},{"version":"2ac061ce97f413bfbbdd768f7d2e0fda2e8170df","status":"affected","lessThan":"e7ba61734d6ad6adfd5bf617052e590743211669","versionType":"git"}],"defaultStatus":"unaffected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-99287"},{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"5.5","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.5","versionType":"semver"},{"version":"6.12.117","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.63","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.3.4","status":"unaffected","lessThanOrEqual":"7.3.*","versionType":"semver"}],"defaultStatus":"affected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-99287"}],"remediation":[],"references":["https://git.kernel.org/stable/c/87fd475dc4e354088f6534285388e7b061f54b35","https://git.kernel.org/stable/c/c5f54af611ff6fe1d53fa05d8e87b469dc56122b","https://git.kernel.org/stable/c/e7ba61734d6ad6adfd5bf617052e590743211669","http://www.openwall.com/lists/oss-security/2026/11/10/26","http://xenbits.xen.org/xsa/advisory-532.html"],"sources":[{"name":"CVE","id":"CVE-2026-99287","modified":"2026-11-10T21:05:27.340Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-99287"}],"assessments":[],"sourceAffected":[],"observedAt":"2026-11-11T02:57:10.989Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T01:10:30.655Z"},"coverage":[{"source":"NVD","status":"refresh-failed","attemptedAt":"2026-11-14T21:40:49.125Z"},{"source":"GHSA","status":"available","checkedAt":"2026-11-14T21:15:34.537Z","attemptedAt":"2026-11-14T21:15:34.537Z"},{"source":"EUVD","status":"available","checkedAt":"2026-11-14T21:15:32.007Z","attemptedAt":"2026-11-14T21:15:32.007Z"},{"source":"EPSS","status":"refresh-failed","attemptedAt":"2026-11-14T21:10:37.312Z"}],"evidence":[{"source":"ENISA EUVD","id":"EUVD-2026-121531","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-121531","modified":"Nov 10, 2026, 9:05:27 PM","checkedAt":"2026-11-14T21:15:32.007Z"},{"source":"GitHub Advisory Database","id":"GHSA-w332-8qhm-mmxw","url":"https://github.com/advisories/GHSA-w332-8qhm-mmxw","modified":"2026-11-10T21:34:33Z","checkedAt":"2026-11-14T21:15:34.537Z"}],"aiSummary":null}