Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Linux Linux — ring-buffer: Fix reader locking when changing the sub buffer order
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L L N U N N H 5.5 .0015 4.4 —
AFFECTED
Product Versions Fixed
Linux 8e7b58c27b3c567316a51079b375b846f9223bba – —
Linux 6.8 – 6.11.6
TIMELINE
Oct 21 Reserved by Linux
Nov 8 Published (CNA: Linux)
Aug 4 RESCORED — CVE-2024-50207 (Linux). CVSS 7.8 → 5.5 (NVD).
Description
In the Linux kernel, the following vulnerability has been resolved:
ring-buffer: Fix reader locking when changing the sub buffer order
The function ring_buffer_subbuf_order_set() updates each
ring_buffer_per_cpu and installs new sub buffers that match the requested
page order. This operation may be invoked concurrently with readers that
rely on some of the modified data, such as the head bit (RB_PAGE_HEAD), or
the ring_buffer_per_cpu.pages and reader_page pointers. However, no
exclusive access is acquired by ring_buffer_subbuf_order_set(). Modifying
the mentioned data while a reader also operates on them can then result in
incorrect memory access and various crashes.
Fix the problem by taking the reader_lock when updating a specific
ring_buffer_per_cpu in ring_buffer_subbuf_order_set().
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| October 21, 2024 | Reserved | Reserved by Linux |
| November 8, 2024 | Published | Published (CNA: Linux) |
| August 4, 2026 | RESCORED | RESCORED — CVE-2024-50207 (Linux). CVSS 7.8 → 5.5 (NVD). |
Affected
Affected products and packages — 2 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| Linux | Linux | — | 8e7b58c27b3c567316a51079b375b846f9223bba | — |
| Linux | Linux | — | 6.8 | 6.11.6 |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2024-50207 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.