Riskcovery

CVE-2026-74602

ring-buffer: Initialise reader page order in rb_allocate_cpu_buffer()

State
Published
Severity
Not scored
Published
Aug 22, 2026
Updated
Aug 23, 2026
Reserved
Aug 15, 2026

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

ring-buffer: Initialise reader page order in rb_allocate_cpu_buffer()

In rb_allocate_cpu_buffer(), bpage->order was omitted, leaving it as 0. This is an issue for a ring-buffer with subbufs bigger than PAGE_SIZE if when freed: free_buffer_page() relies on this value. Align the value with the actual allocation size (buffer::subbuf_order).

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • f9b94daa542a8d2532f0930f01cd9aec2d19621b to before 7c620d89bae1a926ab7d626600285d3516c9f3c4Affected
  • f9b94daa542a8d2532f0930f01cd9aec2d19621b to before 2e37f2bf111429fbfa4d985b12df3ba496ca70aaAffected
  • f9b94daa542a8d2532f0930f01cd9aec2d19621b to before 3b3e0a6ee5bb3ac000f135beef26b2b7ed1a771aAffected
  • f9b94daa542a8d2532f0930f01cd9aec2d19621b to before 6d014e44b68ddd43f71288d2a4dbb1a259869149Affected
LinuxLinux
  • 6.8Affected
  • before 6.8Not affected
  • 6.12.105 through 6.12.*Not affected
  • 6.18.45 through 6.18.*Not affected
  • 7.1.9 through 7.1.*Not affected
  • 7.2 and laterNot affected

References

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