{"attribution":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","cve":{"id":"CVE-2026-99287","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","published":"2026-11-10T19:22:32.043","lastModified":"2026-11-10T21:22:23.010","vulnStatus":"Received","cveTags":[],"descriptions":[{"lang":"en","value":"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"}],"affected":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","affectedData":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["drivers/net/xen-netback/netback.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"2ac061ce97f413bfbbdd768f7d2e0fda2e8170df","lessThan":"87fd475dc4e354088f6534285388e7b061f54b35","versionType":"git","status":"affected"},{"version":"2ac061ce97f413bfbbdd768f7d2e0fda2e8170df","lessThan":"c5f54af611ff6fe1d53fa05d8e87b469dc56122b","versionType":"git","status":"affected"},{"version":"2ac061ce97f413bfbbdd768f7d2e0fda2e8170df","lessThan":"e7ba61734d6ad6adfd5bf617052e590743211669","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["drivers/net/xen-netback/netback.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5.5","status":"affected"},{"version":"0","lessThan":"5.5","versionType":"semver","status":"unaffected"},{"version":"6.12.117","lessThanOrEqual":"6.12.*","versionType":"semver","status":"unaffected"},{"version":"6.18.63","lessThanOrEqual":"6.18.*","versionType":"semver","status":"unaffected"},{"version":"7.3.4","lessThanOrEqual":"7.3.*","versionType":"semver","status":"unaffected"}]}]}],"metrics":{},"references":[{"url":"https://git.kernel.org/stable/c/87fd475dc4e354088f6534285388e7b061f54b35","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c5f54af611ff6fe1d53fa05d8e87b469dc56122b","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e7ba61734d6ad6adfd5bf617052e590743211669","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"http://www.openwall.com/lists/oss-security/2026/11/10/26","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://xenbits.xen.org/xsa/advisory-532.html","source":"af854a3a-2127-422b-91ae-364da2661108"}]}}