CVE-2026-99160EUVD-2026-111912GHSA-PW95-H85M-GVHP
ring-buffer: Do not show buffer_meta for CPUs without a buffer
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 6.18.59, 7.2.13
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Do not show buffer_meta for CPUs without a buffer The per_cpu/cpuN/buffer_meta files are created for every possible CPU, but buffer->buffers[cpu] is only allocated once that CPU comes online. Reading the file of a CPU that never came online dereferences a NULL cpu_buffer in rbm_start(). Fail the open with -ENODEV when the CPU has no buffer, as the other per CPU ring buffer interfaces do.
Timeline
- CVE published
- First seen by cve.now
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
6.12
- KernelLinux
From 6.12.0 · fixed in 6.18.59; From 6.19.0 · fixed in 7.2.13