Linux · Security advisory · August 19, 2026

RHSA-2026:55765: Security update for 12 packages

RHSA-2026:55765, released August 19, 2026, fixes 11 CVEs across 12 products. None of them is reported as exploited. Patch Radar priority: Urgent.

Urgent
CVEs closed
11
1 rated Critical
Exploited
0
None reported
Exploitation more likely
0
Vendor assessment
Highest EPSS
0.0041
35th percentile

Priority of the 11 CVEs

Patch now 0 Urgent 1 High 10 Routine 0

Fixed package versions

ProductReleaseFixed in
kernel-rtRHEL 80:4.18.0-553.156.1.rt7.497.el8_10
kernel-rt-coreRHEL 80:4.18.0-553.156.1.rt7.497.el8_10
kernel-rt-debugRHEL 80:4.18.0-553.156.1.rt7.497.el8_10
kernel-rt-debug-coreRHEL 80:4.18.0-553.156.1.rt7.497.el8_10
kernel-rt-debug-develRHEL 80:4.18.0-553.156.1.rt7.497.el8_10
kernel-rt-debug-kvmRHEL 80:4.18.0-553.156.1.rt7.497.el8_10
kernel-rt-debug-modulesRHEL 80:4.18.0-553.156.1.rt7.497.el8_10
kernel-rt-debug-modules-extraRHEL 80:4.18.0-553.156.1.rt7.497.el8_10
kernel-rt-develRHEL 80:4.18.0-553.156.1.rt7.497.el8_10
kernel-rt-kvmRHEL 80:4.18.0-553.156.1.rt7.497.el8_10
kernel-rt-modulesRHEL 80:4.18.0-553.156.1.rt7.497.el8_10
kernel-rt-modules-extraRHEL 80:4.18.0-553.156.1.rt7.497.el8_10

CVEs this fix closes

PriorityCVETitleImpactCVSSEPSSExploitation
Urgent CVE-2026-53374 drm/amdgpu: zero-initialize GART table on allocation 9.8 0.0013 None reported
High CVE-2026-74580 vhost: reset the vring metadata cache on vring reconfiguration 8.8 0.0041 None reported
High CVE-2026-63884 bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: m... 7.8 0.0018 None reported
High CVE-2025-39902 mm/slub: avoid accessing metadata when pointer is invalid in object_err() 7.8 0.0017 None reported
High CVE-2026-64219 drm/amd/display: Validate payload length and link_index in dc_process_dmub_aux_transfer_async 7.8 0.0017 None reported
High CVE-2026-17523 bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: m... 7.8 0.0017 None reported
High CVE-2026-53329 drm/amd/display: Use krealloc_array() in dal_vector_reserve() 7.8 0.0015 None reported
High CVE-2026-63879 drm/amdgpu: fix amdgpu_hmm_range_get_pages 7.8 0.0014 None reported
High CVE-2026-53016 crypto: ccp - copy IV using skcipher ivsize 7.8 0.0014 None reported
High CVE-2026-43206 kernel-zfcpdump-devel: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: m... 7.8 0.0014 None reported
High CVE-2026-53136 bpftool: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: m... 7.8 0.0013 None reported
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