Описание
Important: kernel security update
The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
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kernel: openvswitch: defer tunnel netdev_put to RCU release (CVE-2026-31678)
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kernel: ipv6: validate extension header length before copying to cmsg (CVE-2026-63920)
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kernel: drm/amd/display: set new_stream to NULL after release (CVE-2026-68236)
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kernel: drm/dp/mst: fix buffer overflows in sideband chunk accumulation (CVE-2026-68278)
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kernel: wifi: mac80211: defer link RX stats percpu free to RCU (CVE-2026-68409)
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kernel: drm/amdgpu/vce: fix integer overflow in image size (CVE-2026-68108)
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kernel: cifs: validate DFS referral string offsets (CVE-2026-72318)
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kernel: drm/vmwgfx: use check_add_overflow for shader size+offset bound (CVE-2026-80887)
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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.
Затронутые продукты
Rocky Linux 8
Ссылки на источники
Исправления
- Red Hat - 2461761
- Red Hat - 2502330
- Red Hat - 2513148
- Red Hat - 2513287
- Red Hat - 2513299
- Red Hat - 2513361
- Red Hat - 2516396
- Red Hat - 2528788
- Red Hat - 2535309
Связанные уязвимости
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 with concurrent readers that still observe vport->dev. Do not release vport->dev in ovs_netdev_tunnel_destroy(). Instead, let vport_netdev_free() drop the reference from the RCU callback, matching the non-tunnel destroy path and avoiding additional synchronization under RTNL.
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 with concurrent readers that still observe vport->dev. Do not release vport->dev in ovs_netdev_tunnel_destroy(). Instead, let vport_netdev_free() drop the reference from the RCU callback, matching the non-tunnel destroy path and avoiding additional synchronization under RTNL.
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 with concurrent readers that still observe vport->dev. Do not release vport->dev in ovs_netdev_tunnel_destroy(). Instead, let vport_netdev_free() drop the reference from the RCU callback, matching the non-tunnel destroy path and avoiding additional synchronization under RTNL.
