How many CVEs have patched ring_buffer_map_get_reader?

3 published CVEs changed ring_buffer_map_get_reader in torvalds/linux, in 9 distinct patches totalling 34 changed lines, between 2025 and 2026.

What is the latest CVE that changed ring_buffer_map_get_reader?

CVE-2026-89771 (ring-buffer: Fix subbuf resize race with ring buffer readers), published 2026-09-11, changed lines 7944 to 7976 of kernel/trace/ring_buffer.c.

How does ring_buffer_map_get_reader compare to the rest of torvalds/linux?

torvalds/linux has 19,281 CVEs with a located fix in total; 3 of them changed ring_buffer_map_get_reader.

What do the line numbers refer to?

Line numbers are in the fixed version of the file, as the upstream patch left it. A CVE whose fix was backported to several branches is listed once, with the lines from the upstream commit.

RadicalNotion.AI

Security data

Weaknesses (CWE)The MITRE CWE weakness catalog
Attack Patterns (CAPEC)MITRE CAPEC attack patterns
CNAsNumbering authorities and report cards
VendorsVulnerabilities by vendor
Patched FunctionsWhere CVE fixes land in code

Tools

CVSS CalculatorScore CVSS 4.0, 3.1, 3.0 & 2.0
Badge BuilderEmbeddable SVG badges for READMEs

Resources

LearnSecurity guides
Data SourcesCVE data sources

About Blog Pricing Demo

Home
Patched Functions
Torvalds
Linux
Ring_buffer_map_get_reader

RadicalNotion.AI

We do not sell or share your personal information.

Security Data

CWE Directory
CAPEC Directory
CNA Directory
CNA Leaderboard
CNA Report Cards
Vendor Directory
Patched Functions
Data Sources

Calculators

CVSS Calculator
CVSS 4.0
CVSS 3.1
CVSS 3.0
CVSS 2.0
Badge Builder

Platform

My Vulnerabilities
Insights
Notifications
Pricing

Learn

Guides
What is a CVE?
What is CVSS?
The CISA KEV catalog
What is EPSS?

Company

About
Blog
Careers
Contact
Demo

Account

Legal

Security
Privacy
Terms

RadicalNotion.AI

Security data

Weaknesses (CWE)The MITRE CWE weakness catalog
Attack Patterns (CAPEC)MITRE CAPEC attack patterns
CNAsNumbering authorities and report cards
VendorsVulnerabilities by vendor
Patched FunctionsWhere CVE fixes land in code

Tools

CVSS CalculatorScore CVSS 4.0, 3.1, 3.0 & 2.0
Badge BuilderEmbeddable SVG badges for READMEs

Resources

LearnSecurity guides
Data SourcesCVE data sources

About Blog Pricing Demo

Home
Patched Functions
Torvalds
Linux
Ring_buffer_map_get_reader

ring_buffer_map_get_reader in torvalds/linux: Patched by 3 CVEs

torvalds/linux

Function

ring_buffer_map_get_reader

Name: ring_buffer_map_get_reader in torvalds/linux: CVE fixes
Creator: RadicalNotion.AI
License: https://creativecommons.org/licenses/by-nc/4.0/

kernel/trace/ring_buffer.c

Last patched September 11, 2026

CVEs

That changed this function

Distinct patches

Backports counted once

Lines changed

Added plus removed

2025–2026

Years

By CVE publication date

Overview

ring_buffer_map_get_reader in torvalds/linux was changed by 3 published CVE fixes between 2025 and 2026, in 9 distinct patches that added or removed 34 lines in total.

torvalds/linux has 19,281 CVEs with a located fix in total, so 0% of them touched this function.

CVEs that patched it

Every published CVE whose fix changed ring_buffer_map_get_reader, newest first, with the lines each fix touched.

ring-buffer: Fix subbuf resize race with ring buffer readers
CVE-2026-89771 · lines 7944–7976 · +2 −2 in 2 hunks
High · CVSS 7.8
EPSS 0.1%2026-09-11
ring-buffer: Do not warn in ring_buffer_map_get_reader() when reader catches up
CVE-2025-68186 · lines 7347–7350 · +4 −0
Unscored
EPSS 0.2%2025-12-16
ring-buffer: Do not trigger WARN_ON() due to a commit_overrun
CVE-2025-38267 · lines 7277–7316 · +18 −8 in 2 hunks
High · CVSS 7.8
EPSS 0.2%2025-07-10

Get an alert when the next CVE fix lands in torvalds/linux, with the patched functions.

Monitor linux CVEs

Other functions in these files

Functions in the same file that CVE fixes also changed.

1ring_buffer_subbuf_order_setkernel/trace/ring_buffer.c8 CVEs · 48 patches2024 to 2026
2ring_buffer_resizekernel/trace/ring_buffer.c3 CVEs · 23 patches2024 to 2026
3ring_buffer_swap_cpukernel/trace/ring_buffer.c2 CVEs · 15 patches2025 to 2026
4rb_free_cpu_bufferkernel/trace/ring_buffer.c2 CVEs · 13 patches2026
5ring_buffer_read_pagekernel/trace/ring_buffer.c2 CVEs · 11 patches2026
6ring_buffer_free_read_pagekernel/trace/ring_buffer.c2 CVEs · 9 patches2026
7cpumask_test_cpukernel/trace/ring_buffer.c2 CVEs · 9 patches2017 to 2026
8rb_meta_validkernel/trace/ring_buffer.c2 CVEs · 4 patches2025 to 2026

Other hotspots in the repository

Functions in torvalds/linux changed by the most CVE fixes.

smb2_sess_setup13 CVEs · fs/smb/server/smb2pdu.c adjust_ptr_min_max_vals13 CVEs · kernel/bpf/verifier.c ext4_fill_super13 CVEs · fs/ext4/super.c bcm_rx_setup12 CVEs · net/can/bcm.c copy_process12 CVEs · kernel/fork.c smb2_sess_setup11 CVEs · fs/ksmbd/smb2pdu.c

All patched functions in torvalds/linux

Frequently asked questions

Common questions about CVE fixes to ring_buffer_map_get_reader.

How many CVEs have patched ring_buffer_map_get_reader?: 3 published CVEs changed ring_buffer_map_get_reader in torvalds/linux, in 9 distinct patches totalling 34 changed lines, between 2025 and 2026.
What is the latest CVE that changed ring_buffer_map_get_reader?: CVE-2026-89771 (ring-buffer: Fix subbuf resize race with ring buffer readers), published 2026-09-11, changed lines 7944 to 7976 of kernel/trace/ring_buffer.c.
How does ring_buffer_map_get_reader compare to the rest of torvalds/linux?: torvalds/linux has 19,281 CVEs with a located fix in total; 3 of them changed ring_buffer_map_get_reader.
What do the line numbers refer to?: Line numbers are in the fixed version of the file, as the upstream patch left it. A CVE whose fix was backported to several branches is listed once, with the lines from the upstream commit.

References

kernel/trace/ring_buffer.c on GitHub (opens in a new tab)
All patched functions in torvalds/linux
Patched functions directory

Fix locations are computed by RadicalNotion.AI from the upstream patch diff of each CVE. CVE data is sourced from the CVE Program.

Track torvalds/linux CVEs

Get an alert when a new CVE lands in this repository, with the patched functions and AI-written remediation guidance.

Create an account See pricing

On this page

Overview
CVEs that patched it
Other functions in these files
Other hotspots in the repository
FAQ
References