Summary
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
Security Fix(es):
* kernel: openvswitch: defer tunnel netdev_put to RCU release (CVE-2026-31678)
* kernel: ipv6: validate extension header length before copying to cmsg (CVE-2026-63920)
* kernel: drm/amd/display: set new_stream to NULL after release (CVE-2026-68236)
* kernel: drm/dp/mst: fix buffer overflows in sideband chunk accumulation (CVE-2026-68278)
* kernel: wifi: mac80211: defer link RX stats percpu free to RCU (CVE-2026-68409)
* kernel: drm/amdgpu/vce: fix integer overflow in image size (CVE-2026-68108)
* kernel: drm/vmwgfx: use check_add_overflow for shader size+offset bound (CVE-2026-80887)
* kernel: drm/amdkfd: Add TLB flush after MES queue eviction/suspension (CVE-2026-89811)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Fixed packages 10
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 8 | kernel-rt | 4.18.0-553.173.1.rt7.514.el8_10 |
| AlmaLinux · 8 | kernel-rt-core | 4.18.0-553.173.1.rt7.514.el8_10 |
| AlmaLinux · 8 | kernel-rt-debug | 4.18.0-553.173.1.rt7.514.el8_10 |
| AlmaLinux · 8 | kernel-rt-debug-core | 4.18.0-553.173.1.rt7.514.el8_10 |
| AlmaLinux · 8 | kernel-rt-debug-devel | 4.18.0-553.173.1.rt7.514.el8_10 |
| AlmaLinux · 8 | kernel-rt-debug-modules | 4.18.0-553.173.1.rt7.514.el8_10 |
| AlmaLinux · 8 | kernel-rt-debug-modules-extra | 4.18.0-553.173.1.rt7.514.el8_10 |
| AlmaLinux · 8 | kernel-rt-devel | 4.18.0-553.173.1.rt7.514.el8_10 |
| AlmaLinux · 8 | kernel-rt-modules | 4.18.0-553.173.1.rt7.514.el8_10 |
| AlmaLinux · 8 | kernel-rt-modules-extra | 4.18.0-553.173.1.rt7.514.el8_10 |
Vulnerabilities 8
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High 8.8
drm/amdgpu/vce: fix integer overflow in image size
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu/vce: fix integer overflow in image size Fix a security vulnerability where malicious VCE command streams with oversized dimensions (e.g. 65536×65536) cause 32-bit integer overflow,…
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High 8.8
wifi: mac80211: defer link RX stats percpu free to RCU
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: defer link RX stats percpu free to RCU sta_remove_link() frees a removed MLO link's RX stats percpu buffer right away, but defers only the link container to RCU: sta_info_free…
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High 8.8
drm/amdkfd: Add TLB flush after MES queue eviction/suspension
In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Add TLB flush after MES queue eviction/suspension MES (Micro Engine Scheduler) does not perform heavy-weight TLB invalidation after unmapping queues, unlike HWS which does this au…
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High 7.8
openvswitch: defer tunnel netdev_put to RCU release
In the Linux kernel, the following vulnerability has been resolved: openvswitch: defer tunnel netdev_put to RCU release ovs_netdev_tunnel_destroy() may run after NETDEV_UNREGISTER already detached the device. Dropping the netdev reference in destroy can race …
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High 7.8
drm/amd/display: set new_stream to NULL after release
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: set new_stream to NULL after release In dm_update_crtc_state(), the skip_modeset path releases new_stream via dc_stream_release() but does not set the pointer to NULL. If a l…
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High 7.1
ipv6: validate extension header length before copying to cmsg
In the Linux kernel, the following vulnerability has been resolved: ipv6: validate extension header length before copying to cmsg ip6_datagram_recv_specific_ctl() builds IPV6_{HOPOPTS,DSTOPTS,RTHDR} cmsgs (and their IPV6_2292* legacy counterparts) by trusting…
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Unscored —
drm/dp/mst: fix buffer overflows in sideband chunk accumulation
In the Linux kernel, the following vulnerability has been resolved: drm/dp/mst: fix buffer overflows in sideband chunk accumulation drm_dp_sideband_append_payload() has three related bugs when processing device-provided sideband reply data: 1. Zero-length cur…
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Unscored —
drm/vmwgfx: use check_add_overflow for shader size+offset bound
In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: use check_add_overflow for shader size+offset bound vmw_shader_define() validates the user-supplied shader window against its backing buffer with (u64)buffer->tbo.base.size < (u64…
References
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report
https://access.redhat.com/security/cve/CVE-2026-31678
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report
https://access.redhat.com/security/cve/CVE-2026-63920
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report
https://access.redhat.com/security/cve/CVE-2026-68108
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report
https://access.redhat.com/security/cve/CVE-2026-68236
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report
https://access.redhat.com/security/cve/CVE-2026-68278
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report
https://access.redhat.com/security/cve/CVE-2026-68409
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report
https://access.redhat.com/security/cve/CVE-2026-80887
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report
https://access.redhat.com/security/cve/CVE-2026-89811
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report
https://bugzilla.redhat.com/2461761
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report
https://bugzilla.redhat.com/2502330
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report
https://bugzilla.redhat.com/2513148
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report
https://bugzilla.redhat.com/2513287
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report
https://bugzilla.redhat.com/2513299
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report
https://bugzilla.redhat.com/2513361
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report
https://bugzilla.redhat.com/2528788
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report
https://bugzilla.redhat.com/2535309
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advisory
https://errata.almalinux.org/8/ALSA-2026-82806.html