CVE-2026-98309
drm/vc4: Use managed KMS polling to fix UAF on unbind
CVE-2026-98309 is fixed in 47 products on 1 platform, first by DEBIAN-CVE-2026-98309, released October 6, 2026. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
7.8
Important
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0018
7th percentile
In the Linux kernel, the following vulnerability has been resolved: drm/vc4: Use managed KMS polling to fix UAF on unbind vc4_kms_load() calls drm_kms_helper_poll_init() but the driver provides no matching drm_kms_helper_poll_fini(). The output poll work stays scheduled after unbind and runs on the freed drm_device: # modprobe vc4; rmmod vc4; sleep 10 BUG: KASAN: slab-use-after-free in delayed_work_timer_fn BUG: KASAN: slab-use-after-free in drm_client_dev_hotplug [drm] Workqueue: events output_poll_execute [drm_kms_helper] Allocated by task 171: __devm_drm_dev_alloc Freed by task 262 (rmmod): drm_dev_put / component_del Use drmm_kms_helper_poll_init() so polling is finalized with the device, as other drivers do.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| kernel-64kb · sles 15.7 | 6.4.0-150700.53.90.1 | SUSE-SU-2026:5091-1 | Nov 7, 2026 |
| kernel-azure · sles 15.7 | 6.4.0-150700.53.90.1 | SUSE-SU-2026:5091-1 | Nov 7, 2026 |
| kernel-default · sles 15.7 | 6.4.0-150700.53.90.1 | SUSE-SU-2026:5091-1 | Nov 7, 2026 |
| kernel-default-base · sles 15.7 | 6.4.0-150700.53.90.1.150700.17.51.1 | SUSE-SU-2026:5091-1 | Nov 7, 2026 |
| kernel-docs · sles 15.7 | 6.4.0-150700.53.90.1 | SUSE-SU-2026:5091-1 | Nov 7, 2026 |
| kernel-livepatch-SLE15-SP7_Update_24 · sles 15.7 | 1-150700.15.3.1 | SUSE-SU-2026:5091-1 | Nov 7, 2026 |
| kernel-obs-build · sles 15.7 | 6.4.0-150700.53.90.1 | SUSE-SU-2026:5091-1 | Nov 7, 2026 |
| kernel-source · sles 15.7 | 6.4.0-150700.53.90.1 | SUSE-SU-2026:5091-1 | Nov 7, 2026 |
| kernel-syms · sles 15.7 | 6.4.0-150700.53.90.1 | SUSE-SU-2026:5091-1 | Nov 7, 2026 |
| kernel-uek · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-core · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-core · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-debug · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-debug · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-debug-core · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-debug-core · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-debug-devel · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-debug-devel · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-debug-modules · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-debug-modules · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-debug-modules-core · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-debug-modules-core · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-debug-modules-deprecated · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-debug-modules-deprecated · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-debug-modules-desktop · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-debug-modules-desktop · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-debug-modules-extra · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-debug-modules-extra · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-debug-modules-extra-netfilter · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-debug-modules-extra-netfilter · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-debug-modules-usb · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-debug-modules-usb · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-debug-modules-wireless · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-debug-modules-wireless · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-devel · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-devel · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-doc · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-doc · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-modules · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-modules · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-modules-core · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-modules-core · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-modules-deprecated · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-modules-deprecated · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-modules-desktop · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-modules-desktop · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-modules-extra · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-modules-extra · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-modules-extra-netfilter · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-modules-extra-netfilter · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-modules-usb · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-modules-usb · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-modules-wireless · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-modules-wireless · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-tools · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek-tools · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek64k · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek64k · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek64k-core · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek64k-core · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek64k-devel · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek64k-devel · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek64k-modules · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek64k-modules · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek64k-modules-core · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek64k-modules-core · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek64k-modules-deprecated · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek64k-modules-deprecated · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek64k-modules-desktop · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek64k-modules-desktop · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek64k-modules-extra · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek64k-modules-extra · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek64k-modules-extra-netfilter · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek64k-modules-extra-netfilter · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek64k-modules-usb · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek64k-modules-usb · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek64k-modules-wireless · ol 10 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-uek64k-modules-wireless · ol 9 | 0:6.12.0-208.112.5.el9uek | ELSA-2026-500572 | Nov 7, 2026 |
| kernel-zfcpdump · sles 15.7 | 6.4.0-150700.53.90.1 | SUSE-SU-2026:5091-1 | Nov 7, 2026 |
| linux · Debian 13.5 (trixie) | 6.12.113-1 | DEBIAN-CVE-2026-98309 | Oct 6, 2026 |
| linux · Debian 14 | 7.2.8-1 | DEBIAN-CVE-2026-98309 | Oct 6, 2026 |
| linux-6.12 · Debian 12.15 (bookworm) | 6.12.113-1~deb12u1 | DEBIAN-CVE-2026-98309 | Oct 6, 2026 |
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