RHSA-2026:49030: Moderate: kernel security update

Published Jul 31, 2026
·
Updated

Moderate: kernel security update

Other sources

The kernel packages contain the Linux kernel, the core of any Linux operating system.Security Fix(es): kernel: KVM: x86: Don't (re)check L1 intercepts when completing userspace I/O (CVE-2025-40026) kernel: KVM: x86/mmu: Ensure hugepage is in by slot before checking max mapping level (CVE-2026-63807) 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.

— Red Hat

Affected Software

208 affected componentsFixes available
redhat/kernel<6.12.0-55.94.1.el10_0
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6.12.0-55.94.1.el10_0.aa
redhat/kernel-rt-debug-modules<6.12.0-55.94.1.el10_0.aa
6.12.0-55.94.1.el10_0.aa
redhat/kernel-rt-debug-modules-core<6.12.0-55.94.1.el10_0.aa
6.12.0-55.94.1.el10_0.aa
redhat/kernel-rt-debug-modules-extra<6.12.0-55.94.1.el10_0.aa
6.12.0-55.94.1.el10_0.aa
redhat/kernel-rt-debuginfo<6.12.0-55.94.1.el10_0.aa
6.12.0-55.94.1.el10_0.aa
redhat/kernel-rt-devel<6.12.0-55.94.1.el10_0.aa
6.12.0-55.94.1.el10_0.aa
redhat/kernel-rt-modules<6.12.0-55.94.1.el10_0.aa
6.12.0-55.94.1.el10_0.aa
redhat/kernel-rt-modules-core<6.12.0-55.94.1.el10_0.aa
6.12.0-55.94.1.el10_0.aa
redhat/kernel-rt-modules-extra<6.12.0-55.94.1.el10_0.aa
6.12.0-55.94.1.el10_0.aa
redhat/kernel-tools<6.12.0-55.94.1.el10_0.aa
6.12.0-55.94.1.el10_0.aa
redhat/kernel-tools-debuginfo<6.12.0-55.94.1.el10_0.aa
6.12.0-55.94.1.el10_0.aa
redhat/kernel-tools-libs<6.12.0-55.94.1.el10_0.aa
6.12.0-55.94.1.el10_0.aa
redhat/kernel-uki-virt<6.12.0-55.94.1.el10_0.aa
6.12.0-55.94.1.el10_0.aa
redhat/kernel-uki-virt-addons<6.12.0-55.94.1.el10_0.aa
6.12.0-55.94.1.el10_0.aa
redhat/libperf-debuginfo<6.12.0-55.94.1.el10_0.aa
6.12.0-55.94.1.el10_0.aa
redhat/perf<6.12.0-55.94.1.el10_0.aa
6.12.0-55.94.1.el10_0.aa
redhat/perf-debuginfo<6.12.0-55.94.1.el10_0.aa
6.12.0-55.94.1.el10_0.aa
redhat/python3-perf<6.12.0-55.94.1.el10_0.aa
6.12.0-55.94.1.el10_0.aa
redhat/python3-perf-debuginfo<6.12.0-55.94.1.el10_0.aa
6.12.0-55.94.1.el10_0.aa
redhat/rtla<6.12.0-55.94.1.el10_0.aa
6.12.0-55.94.1.el10_0.aa
redhat/rv<6.12.0-55.94.1.el10_0.aa
6.12.0-55.94.1.el10_0.aa
redhat/kernel-cross-headers<6.12.0-55.94.1.el10_0
6.12.0-55.94.1.el10_0
redhat/kernel-tools-libs-devel<6.12.0-55.94.1.el10_0
6.12.0-55.94.1.el10_0
redhat/libperf<6.12.0-55.94.1.el10_0
6.12.0-55.94.1.el10_0
redhat/kernel-cross-headers<6.12.0-55.94.1.el10_0
6.12.0-55.94.1.el10_0
redhat/kernel-tools-libs-devel<6.12.0-55.94.1.el10_0
6.12.0-55.94.1.el10_0
redhat/libperf<6.12.0-55.94.1.el10_0
6.12.0-55.94.1.el10_0
redhat/kernel-cross-headers<6.12.0-55.94.1.el10_0
6.12.0-55.94.1.el10_0
redhat/libperf<6.12.0-55.94.1.el10_0
6.12.0-55.94.1.el10_0
redhat/kernel-cross-headers<6.12.0-55.94.1.el10_0.aa
6.12.0-55.94.1.el10_0.aa
redhat/kernel-tools-libs-devel<6.12.0-55.94.1.el10_0.aa
6.12.0-55.94.1.el10_0.aa
redhat/libperf<6.12.0-55.94.1.el10_0.aa
6.12.0-55.94.1.el10_0.aa
Red Hat Red Hat Enterprise Linux for IBM z Systems - 4 years of updates
Red Hat Red Hat Enterprise Linux for x86_64 - 4 years of updates
Red Hat Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Red Hat Enterprise Linux for ARM 64 - 4 years of updates
Red Hat Red Hat Enterprise Linux for Power, little endian - 4 years of support
Red Hat Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support
Red Hat Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support
Red Hat Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  2. Upgrade

    Upgrade redhat/kernel-abi-stablelists to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  3. Upgrade

    Upgrade redhat/kernel-core to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  4. Upgrade

    Upgrade redhat/kernel-debug to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  5. Upgrade

    Upgrade redhat/kernel-debug-core to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  6. Upgrade

    Upgrade redhat/kernel-debug-debuginfo to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  7. Upgrade

    Upgrade redhat/kernel-debug-devel to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  8. Upgrade

    Upgrade redhat/kernel-debug-devel-matched to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  9. Upgrade

    Upgrade redhat/kernel-debug-modules to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  10. Upgrade

    Upgrade redhat/kernel-debug-modules-core to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  11. Upgrade

    Upgrade redhat/kernel-debug-modules-extra to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  12. Upgrade

    Upgrade redhat/kernel-debug-uki-virt to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  13. Upgrade

    Upgrade redhat/kernel-debuginfo to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  14. Upgrade

    Upgrade redhat/kernel-devel to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  15. Upgrade

    Upgrade redhat/kernel-devel-matched to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  16. Upgrade

    Upgrade redhat/kernel-doc to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  17. Upgrade

    Upgrade redhat/kernel-headers to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  18. Upgrade

    Upgrade redhat/kernel-modules to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  19. Upgrade

    Upgrade redhat/kernel-modules-core to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  20. Upgrade

    Upgrade redhat/kernel-modules-extra to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  21. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  22. Upgrade

    Upgrade redhat/kernel-rt-core to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  23. Upgrade

    Upgrade redhat/kernel-rt-debug to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  24. Upgrade

    Upgrade redhat/kernel-rt-debug-core to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  25. Upgrade

    Upgrade redhat/kernel-rt-debug-debuginfo to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  26. Upgrade

    Upgrade redhat/kernel-rt-debug-devel to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  27. Upgrade

    Upgrade redhat/kernel-rt-debug-kvm to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  28. Upgrade

    Upgrade redhat/kernel-rt-debug-modules to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  29. Upgrade

    Upgrade redhat/kernel-rt-debug-modules-core to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  30. Upgrade

    Upgrade redhat/kernel-rt-debug-modules-extra to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  31. Upgrade

    Upgrade redhat/kernel-rt-debuginfo to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  32. Upgrade

    Upgrade redhat/kernel-rt-devel to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  33. Upgrade

    Upgrade redhat/kernel-rt-kvm to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  34. Upgrade

    Upgrade redhat/kernel-rt-modules to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  35. Upgrade

    Upgrade redhat/kernel-rt-modules-core to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  36. Upgrade

    Upgrade redhat/kernel-rt-modules-extra to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  37. Upgrade

    Upgrade redhat/kernel-tools to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  38. Upgrade

    Upgrade redhat/kernel-tools-debuginfo to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  39. Upgrade

    Upgrade redhat/kernel-tools-libs to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  40. Upgrade

    Upgrade redhat/kernel-uki-virt to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  41. Upgrade

    Upgrade redhat/kernel-uki-virt-addons to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  42. Upgrade

    Upgrade redhat/libperf-debuginfo to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  43. Upgrade

    Upgrade redhat/perf to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  44. Upgrade

    Upgrade redhat/perf-debuginfo to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  45. Upgrade

    Upgrade redhat/python3-perf to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  46. Upgrade

    Upgrade redhat/python3-perf-debuginfo to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  47. Upgrade

    Upgrade redhat/rtla to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  48. Upgrade

    Upgrade redhat/rv to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  49. Upgrade

    Upgrade redhat/kernel-debuginfo-common-s390x to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  50. Upgrade

    Upgrade redhat/kernel-zfcpdump to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  51. Upgrade

    Upgrade redhat/kernel-zfcpdump-core to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  52. Upgrade

    Upgrade redhat/kernel-zfcpdump-debuginfo to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  53. Upgrade

    Upgrade redhat/kernel-zfcpdump-devel to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  54. Upgrade

    Upgrade redhat/kernel-zfcpdump-devel-matched to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  55. Upgrade

    Upgrade redhat/kernel-zfcpdump-modules to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  56. Upgrade

    Upgrade redhat/kernel-zfcpdump-modules-core to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  57. Upgrade

    Upgrade redhat/kernel-zfcpdump-modules-extra to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  58. Upgrade

    Upgrade redhat/kernel-debuginfo-common-ppc64le to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  59. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  60. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 64k-6.12.0-55.94.1.el10_0.aa
  61. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 64k-core-6.12.0-55.94.1.el10_0.aa
  62. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 64k-debug-6.12.0-55.94.1.el10_0.aa
  63. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 64k-debug-core-6.12.0-55.94.1.el10_0.aa
  64. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 64k-debug-debuginfo-6.12.0-55.94.1.el10_0.aa
  65. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 64k-debug-devel-6.12.0-55.94.1.el10_0.aa
  66. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 64k-debug-devel-matched-6.12.0-55.94.1.el10_0.aa
  67. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 64k-debug-modules-6.12.0-55.94.1.el10_0.aa
  68. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 64k-debug-modules-core-6.12.0-55.94.1.el10_0.aa
  69. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 64k-debug-modules-extra-6.12.0-55.94.1.el10_0.aa
  70. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 64k-debuginfo-6.12.0-55.94.1.el10_0.aa
  71. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 64k-devel-6.12.0-55.94.1.el10_0.aa
  72. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 64k-devel-matched-6.12.0-55.94.1.el10_0.aa
  73. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 64k-modules-6.12.0-55.94.1.el10_0.aa
  74. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 64k-modules-core-6.12.0-55.94.1.el10_0.aa
  75. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 64k-modules-extra-6.12.0-55.94.1.el10_0.aa
  76. Upgrade

    Upgrade redhat/kernel-core to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  77. Upgrade

    Upgrade redhat/kernel-debug to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  78. Upgrade

    Upgrade redhat/kernel-debug-core to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  79. Upgrade

    Upgrade redhat/kernel-debug-debuginfo to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  80. Upgrade

    Upgrade redhat/kernel-debug-devel to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  81. Upgrade

    Upgrade redhat/kernel-debug-devel-matched to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  82. Upgrade

    Upgrade redhat/kernel-debug-modules to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  83. Upgrade

    Upgrade redhat/kernel-debug-modules-core to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  84. Upgrade

    Upgrade redhat/kernel-debug-modules-extra to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  85. Upgrade

    Upgrade redhat/kernel-debuginfo to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  86. Upgrade

    Upgrade redhat/kernel-debuginfo-common-aarch64 to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  87. Upgrade

    Upgrade redhat/kernel-devel to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  88. Upgrade

    Upgrade redhat/kernel-devel-matched to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  89. Upgrade

    Upgrade redhat/kernel-headers to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  90. Upgrade

    Upgrade redhat/kernel-modules to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  91. Upgrade

    Upgrade redhat/kernel-modules-core to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  92. Upgrade

    Upgrade redhat/kernel-modules-extra to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  93. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  94. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 64k-6.12.0-55.94.1.el10_0.aa
  95. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 64k-core-6.12.0-55.94.1.el10_0.aa
  96. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 64k-debug-6.12.0-55.94.1.el10_0.aa
  97. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 64k-debug-core-6.12.0-55.94.1.el10_0.aa
  98. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 64k-debug-debuginfo-6.12.0-55.94.1.el10_0.aa
  99. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 64k-debug-devel-6.12.0-55.94.1.el10_0.aa
  100. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 64k-debug-modules-6.12.0-55.94.1.el10_0.aa
  101. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 64k-debug-modules-core-6.12.0-55.94.1.el10_0.aa
  102. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 64k-debug-modules-extra-6.12.0-55.94.1.el10_0.aa
  103. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 64k-debuginfo-6.12.0-55.94.1.el10_0.aa
  104. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 64k-devel-6.12.0-55.94.1.el10_0.aa
  105. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 64k-modules-6.12.0-55.94.1.el10_0.aa
  106. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 64k-modules-core-6.12.0-55.94.1.el10_0.aa
  107. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 64k-modules-extra-6.12.0-55.94.1.el10_0.aa
  108. Upgrade

    Upgrade redhat/kernel-rt-core to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  109. Upgrade

    Upgrade redhat/kernel-rt-debug to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  110. Upgrade

    Upgrade redhat/kernel-rt-debug-core to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  111. Upgrade

    Upgrade redhat/kernel-rt-debug-debuginfo to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  112. Upgrade

    Upgrade redhat/kernel-rt-debug-devel to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  113. Upgrade

    Upgrade redhat/kernel-rt-debug-modules to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  114. Upgrade

    Upgrade redhat/kernel-rt-debug-modules-core to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  115. Upgrade

    Upgrade redhat/kernel-rt-debug-modules-extra to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  116. Upgrade

    Upgrade redhat/kernel-rt-debuginfo to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  117. Upgrade

    Upgrade redhat/kernel-rt-devel to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  118. Upgrade

    Upgrade redhat/kernel-rt-modules to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  119. Upgrade

    Upgrade redhat/kernel-rt-modules-core to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  120. Upgrade

    Upgrade redhat/kernel-rt-modules-extra to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  121. Upgrade

    Upgrade redhat/kernel-tools to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  122. Upgrade

    Upgrade redhat/kernel-tools-debuginfo to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  123. Upgrade

    Upgrade redhat/kernel-tools-libs to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  124. Upgrade

    Upgrade redhat/kernel-uki-virt to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  125. Upgrade

    Upgrade redhat/kernel-uki-virt-addons to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  126. Upgrade

    Upgrade redhat/libperf-debuginfo to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  127. Upgrade

    Upgrade redhat/perf to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  128. Upgrade

    Upgrade redhat/perf-debuginfo to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  129. Upgrade

    Upgrade redhat/python3-perf to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  130. Upgrade

    Upgrade redhat/python3-perf-debuginfo to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  131. Upgrade

    Upgrade redhat/rtla to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  132. Upgrade

    Upgrade redhat/rv to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  133. Upgrade

    Upgrade redhat/kernel-cross-headers to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  134. Upgrade

    Upgrade redhat/kernel-tools-libs-devel to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  135. Upgrade

    Upgrade redhat/libperf to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0
  136. Upgrade

    Upgrade redhat/kernel-cross-headers to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  137. Upgrade

    Upgrade redhat/kernel-tools-libs-devel to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  138. Upgrade

    Upgrade redhat/libperf to a version that resolves this vulnerability.

    Fixed in 6.12.0-55.94.1.el10_0.aa
  139. Upgrade

    Upgrade kernel to a version that resolves this vulnerability.

    Patch CVE-2026-63807
  140. Upgrade

    Upgrade kernel to a version that resolves this vulnerability.

    Patch CVE-2025-40026
  141. Operational

    Reboot the system to ensure the kernel security update takes effect.

Event History

Jul 31, 2026
Advisory Published
via Red Hat·11:36 AM
Data Sourced
via Red Hat·11:36 AM
DescriptionSeverityAffected Software
Aug 12, 2026
Advisory Published
via Red Hat·09:36 AM
Data Sourced
via Red Hat·09:36 AM
Remedy

Frequently Asked Questions

1

What is the severity of RHSA-2026:49030?

RHSA-2026:49030 has a severity rating of medium (4).

2

What are the security fixes included in RHSA-2026:49030?

RHSA-2026:49030 includes fixes for CVE-2025-40026 related to KVM and user space I/O handling.

3

How do I fix RHSA-2026:49030?

To fix RHSA-2026:49030, ensure you update the affected kernel packages on your Red Hat system to the latest version.

4

What packages are affected by RHSA-2026:49030?

The affected packages include redhat/kernel, redhat/kernel-rt, redhat/kernel-core, and several debug-related packages.

5

When was RHSA-2026:49030 published?

RHSA-2026:49030 was published on July 31, 2026.

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Contact

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