How many CVEs have patched rb_free_cpu_buffer?

2 published CVEs changed rb_free_cpu_buffer in torvalds/linux, in 13 distinct patches totalling 4 changed lines, between 2026 and 2026.

What is the latest CVE that changed rb_free_cpu_buffer?

CVE-2026-89502 (ring-buffer: Free cpu_buffer::free_page with subbuf_order), published 2026-09-11, changed lines 2634 of kernel/trace/ring_buffer.c.

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

torvalds/linux has 19,281 CVEs with a located fix in total; 2 of them changed rb_free_cpu_buffer.

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.

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torvalds/linux

Function

rb_free_cpu_buffer

Name: rb_free_cpu_buffer 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

2

CVEs

That changed this function

13

Distinct patches

Backports counted once

4

Lines changed

Added plus removed

2026

Years

By CVE publication date

Overview

rb_free_cpu_buffer in torvalds/linux was changed by 2 published CVE fixes in 2026, in 13 distinct patches that added or removed 4 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 rb_free_cpu_buffer, newest first, with the lines each fix touched.

ring-buffer: Free cpu_buffer::free_page with subbuf_order
CVE-2026-89502 · line 2634 · +1 −1
Unscored
EPSS 0.2%2026-09-11
ring-buffer: Make cpu_buffer::free_page a buffer_data_read_page
CVE-2026-89500 · line 2634 · +1 −1
High · CVSS 7.8
EPSS 0.2%2026-09-11

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Other functions in these files

Functions in the same file that CVE fixes also changed.

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 rb_free_cpu_buffer.

How many CVEs have patched rb_free_cpu_buffer?: 2 published CVEs changed rb_free_cpu_buffer in torvalds/linux, in 13 distinct patches totalling 4 changed lines, between 2026 and 2026.
What is the latest CVE that changed rb_free_cpu_buffer?: CVE-2026-89502 (ring-buffer: Free cpu_buffer::free_page with subbuf_order), published 2026-09-11, changed lines 2634 of kernel/trace/ring_buffer.c.
How does rb_free_cpu_buffer compare to the rest of torvalds/linux?: torvalds/linux has 19,281 CVEs with a located fix in total; 2 of them changed rb_free_cpu_buffer.
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

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

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