{"id":"DEBIAN-CVE-2021-47564","details":"In the Linux kernel, the following vulnerability has been resolved:  net: marvell: prestera: fix double free issue on err path  fix error path handling in prestera_bridge_port_join() that cases prestera driver to crash (see below).   Trace:    Internal error: Oops: 96000044 [#1] SMP    Modules linked in: prestera_pci prestera uio_pdrv_genirq    CPU: 1 PID: 881 Comm: ip Not tainted 5.15.0 #1    pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)    pc : prestera_bridge_destroy+0x2c/0xb0 [prestera]    lr : prestera_bridge_port_join+0x2cc/0x350 [prestera]    sp : ffff800011a1b0f0    ...    x2 : ffff000109ca6c80 x1 : dead000000000100 x0 : dead000000000122     Call trace:    prestera_bridge_destroy+0x2c/0xb0 [prestera]    prestera_bridge_port_join+0x2cc/0x350 [prestera]    prestera_netdev_port_event.constprop.0+0x3c4/0x450 [prestera]    prestera_netdev_event_handler+0xf4/0x110 [prestera]    raw_notifier_call_chain+0x54/0x80    call_netdevice_notifiers_info+0x54/0xa0    __netdev_upper_dev_link+0x19c/0x380","modified":"2026-09-15T09:02:40.227538522Z","published":"2024-05-24T15:15:21.263Z","upstream":["CVE-2021-47564"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2021-47564"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.15-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-47564.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.15-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-47564.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.15.15-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-47564.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}