# CVE-2026-64585: can: esd_usb: kill anchored URBs before freeing netdevs CVE-2026-64585 is fixed in 36 products on 1 platform, first by DEBIAN-CVE-2026-64585, released August 6, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-64585 - Priority: High - CVSS: 7.8 (Moderate) - EPSS: 0.0012 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Aug 6, 2026 - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64585 ## Description In the Linux kernel, the following vulnerability has been resolved: can: esd_usb: kill anchored URBs before freeing netdevs esd_usb_disconnect() frees each CAN netdev with free_candev() inside its per-netdev loop and only calls unlink_all_urbs(dev) afterwards. The per-netdev private data (struct esd_usb_net_priv) is embedded in the net_device allocation returned by alloc_candev(), so once free_candev() has run, dev->nets[i] points to freed memory. unlink_all_urbs() then dereferences the freed dev->nets[i] to kill the per-netdev TX anchor (usb_kill_anchored_urbs(&priv->tx_submitted)), clear active_tx_jobs, and reset priv->tx_contexts[]. Reorder the teardown so the anchored URBs are killed before the netdevs are freed, matching other CAN/USB drivers in the same directory such as ems_usb, usb_8dev and mcba_usb, which unregister, then unlink, then free: unregister the netdevs first (which stops their TX queues), call unlink_all_urbs(dev) once, then free the netdevs. This issue was found by an in-house static analysis tool. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | bpftool ol 8 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | bpftool ol 9 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | dtb-aarch64 opensuse-leap 16.0 | 6.12.0-160000.38.1 | [OPENSUSE-SU-2026:21910-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21910-1.md) | Sep 22, 2026 | | Linux | kernel-64kb opensuse-leap 16.0 | 6.12.0-160000.38.1 | [OPENSUSE-SU-2026:21910-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21910-1.md) | Sep 22, 2026 | | Linux | kernel-64kb sles 15.7 | 6.4.0-150700.53.81.1 | [SUSE-SU-2026:4254-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4254-1.md) | Oct 7, 2026 | | Linux | kernel-64kb sles 16.0 | 6.12.0-160000.38.1 | [SUSE-SU-2026:23902-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23902-1.md) | Sep 22, 2026 | | Linux | kernel-azure opensuse-leap 16.0 | 6.12.0-160000.38.1 | [OPENSUSE-SU-2026:21910-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21910-1.md) | Sep 22, 2026 | | Linux | kernel-azure sles 15.7 | 6.4.0-150700.53.81.1 | [SUSE-SU-2026:4254-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4254-1.md) | Oct 7, 2026 | | Linux | kernel-azure sles 16.0 | 6.12.0-160000.38.1 | [SUSE-SU-2026:23902-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23902-1.md) | Sep 22, 2026 | | Linux | kernel-default opensuse-leap 16.0 | 6.12.0-160000.38.1 | [OPENSUSE-SU-2026:21910-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21910-1.md) | Sep 22, 2026 | | Linux | kernel-default sles 15.7 | 6.4.0-150700.53.81.1 | [SUSE-SU-2026:4254-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4254-1.md) | Oct 7, 2026 | | Linux | kernel-default sles 16.0 | 6.12.0-160000.38.1 | [SUSE-SU-2026:23902-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23902-1.md) | Sep 22, 2026 | | Linux | kernel-default-base opensuse-leap 16.0 | 6.12.0-160000.38.1.160000.2.22 | [OPENSUSE-SU-2026:21910-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21910-1.md) | Sep 22, 2026 | | Linux | kernel-default-base sles 15.7 | 6.4.0-150700.53.81.1.150700.17.45.1 | [SUSE-SU-2026:4254-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4254-1.md) | Oct 7, 2026 | | Linux | kernel-default-base sles 16.0 | 6.12.0-160000.38.1.160000.2.23 | [SUSE-SU-2026:23902-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23902-1.md) | Sep 22, 2026 | | Linux | kernel-docs opensuse-leap 16.0 | 6.12.0-160000.38.1 | [OPENSUSE-SU-2026:21910-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21910-1.md) | Sep 22, 2026 | | Linux | kernel-docs sles 15.7 | 6.4.0-150700.53.81.1 | [SUSE-SU-2026:4254-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4254-1.md) | Oct 7, 2026 | | Linux | kernel-docs sles 16.0 | 6.12.0-160000.38.1 | [SUSE-SU-2026:23902-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23902-1.md) | Sep 22, 2026 | | Linux | kernel-kvmsmall opensuse-leap 16.0 | 6.12.0-160000.38.1 | [OPENSUSE-SU-2026:21910-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21910-1.md) | Sep 22, 2026 | | Linux | kernel-kvmsmall sles 16.0 | 6.12.0-160000.38.1 | [SUSE-SU-2026:23902-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23902-1.md) | Sep 22, 2026 | | Linux | kernel-livepatch-SLE15-SP7-RT_Update_20 sles 15.7 | 1-150700.1.3.1 | [SUSE-SU-2026:4120-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4120-1.md) | Sep 10, 2026 | | Linux | kernel-livepatch-SLE15-SP7_Update_21 sles 15.7 | 1-150700.15.3.1 | [SUSE-SU-2026:4254-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4254-1.md) | Oct 7, 2026 | | Linux | kernel-obs-build opensuse-leap 16.0 | 6.12.0-160000.38.1 | [OPENSUSE-SU-2026:21910-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21910-1.md) | Sep 22, 2026 | | Linux | kernel-obs-build sles 15.7 | 6.4.0-150700.53.81.1 | [SUSE-SU-2026:4254-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4254-1.md) | Oct 7, 2026 | | Linux | kernel-obs-qa opensuse-leap 16.0 | 6.12.0-160000.38.1 | [OPENSUSE-SU-2026:21910-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21910-1.md) | Sep 22, 2026 | | Linux | kernel-obs-qa sles 16.0 | 6.12.0-160000.38.1 | [SUSE-SU-2026:23902-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23902-1.md) | Sep 22, 2026 | | Linux | kernel-rt opensuse-leap 16.0 | 6.12.0-160000.38.1 | [OPENSUSE-SU-2026:21910-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21910-1.md) | Sep 22, 2026 | | Linux | kernel-source opensuse-leap 16.0 | 6.12.0-160000.38.1 | [OPENSUSE-SU-2026:21910-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21910-1.md) | Sep 22, 2026 | | Linux | kernel-source sles 15.7 | 6.4.0-150700.53.81.1 | [SUSE-SU-2026:4254-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4254-1.md) | Oct 7, 2026 | | Linux | kernel-source sles 16.0 | 6.12.0-160000.38.1 | [SUSE-SU-2026:23902-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23902-1.md) | Sep 22, 2026 | | Linux | kernel-syms opensuse-leap 16.0 | 6.12.0-160000.38.1 | [OPENSUSE-SU-2026:21910-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21910-1.md) | Sep 22, 2026 | | Linux | kernel-syms sles 15.7 | 6.4.0-150700.53.81.1 | [SUSE-SU-2026:4254-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4254-1.md) | Oct 7, 2026 | | Linux | kernel-syms sles 16.0 | 6.12.0-160000.38.1 | [SUSE-SU-2026:23902-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23902-1.md) | Sep 22, 2026 | | Linux | kernel-uek ol 8 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek ol 9 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek-container ol 8 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek-container ol 9 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek-container-debug ol 8 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek-container-debug ol 9 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek-core ol 8 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek-core ol 9 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek-debug ol 8 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek-debug ol 9 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek-debug-core ol 8 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek-debug-core ol 9 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek-debug-devel ol 8 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek-debug-devel ol 9 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek-debug-modules ol 8 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek-debug-modules ol 9 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek-debug-modules-extra ol 8 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek-debug-modules-extra ol 9 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek-devel ol 8 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek-devel ol 9 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek-doc ol 8 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek-doc ol 9 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek-modules ol 8 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek-modules ol 9 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek-modules-extra ol 8 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek-modules-extra ol 9 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek64k ol 8 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek64k ol 9 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek64k-core ol 8 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek64k-core ol 9 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek64k-devel ol 8 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek64k-devel ol 9 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek64k-modules ol 8 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek64k-modules ol 9 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek64k-modules-extra ol 8 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-uek64k-modules-extra ol 9 | 0:5.15.0-325.220.5.el9uek | [ELSA-2026-500377](https://patchblox.com/security/data/fix/linux/elsa-2026-500377.md) | Oct 7, 2026 | | Linux | kernel-zfcpdump opensuse-leap 16.0 | 6.12.0-160000.38.1 | [OPENSUSE-SU-2026:21910-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21910-1.md) | Sep 22, 2026 | | Linux | kernel-zfcpdump sles 15.7 | 6.4.0-150700.53.81.1 | [SUSE-SU-2026:4254-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4254-1.md) | Oct 7, 2026 | | Linux | kernel-zfcpdump sles 16.0 | 6.12.0-160000.38.1 | [SUSE-SU-2026:23902-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23902-1.md) | Sep 22, 2026 | | Linux | linux Debian 12.15 (bookworm) | 6.1.180-1 | [DEBIAN-CVE-2026-64585](https://patchblox.com/security/data/fix/linux/debian-cve-2026-64585.md) | Aug 6, 2026 | | Linux | linux Debian 13.5 (trixie) | 6.12.100-1 | [DEBIAN-CVE-2026-64585](https://patchblox.com/security/data/fix/linux/debian-cve-2026-64585.md) | Aug 6, 2026 | | Linux | linux Debian 14 | 7.1.5-1 | [DEBIAN-CVE-2026-64585](https://patchblox.com/security/data/fix/linux/debian-cve-2026-64585.md) | Aug 6, 2026 | | Linux | linux-6.12 Debian 12.15 (bookworm) | 6.12.100-1~deb12u1 | [DEBIAN-CVE-2026-64585](https://patchblox.com/security/data/fix/linux/debian-cve-2026-64585.md) | Aug 6, 2026 | --- Data as of 2026-11-08T13:06:02Z UTC. 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