How many CVEs have patched dup_mmap?

4 published CVEs changed dup_mmap in torvalds/linux, in 9 distinct patches totalling 62 changed lines, between 2024 and 2025.

What is the latest CVE that changed dup_mmap?

CVE-2025-21709 (kernel: be more careful about dup_mmap() failures and uprobe registering), published 2025-02-27, changed lines 763 to 783 of kernel/fork.c.

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

torvalds/linux has 19,281 CVEs with a located fix in total; 4 of them changed dup_mmap.

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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Dup_mmap

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Patched Functions
Torvalds
Linux
Dup_mmap

dup_mmap in torvalds/linux: Patched by 4 CVEs

torvalds/linux

Function

dup_mmap

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

kernel/fork.c

Last patched February 27, 2025

CVEs

That changed this function

Distinct patches

Backports counted once

Lines changed

Added plus removed

2024–2025

Years

By CVE publication date

Overview

dup_mmap in torvalds/linux was changed by 4 published CVE fixes between 2024 and 2025, in 9 distinct patches that added or removed 62 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 dup_mmap, newest first, with the lines each fix touched.

On this page

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

kernel: be more careful about dup_mmap() failures and uprobe registering
CVE-2025-21709 · lines 763–783 · +14 −3 in 2 hunks
Medium · CVSS 6.4
EPSS 0.2%2025-02-27
fork: only invoke khugepaged, ksm hooks if no error
CVE-2024-50263 · lines 656–759 · +2 −5 in 2 hunks
High · CVSS 7.8
EPSS 0.2%2024-11-11
fork: do not invoke uffd on fork if error occurs
CVE-2024-50220 · lines 778–781 · +4 −1
Medium · CVSS 4.7
EPSS 0.2%2024-11-09
fork: defer linking file vma until vma is fully initialized
CVE-2024-27022 · lines 717–753 · +17 −16 in 2 hunks
Medium · CVSS 5.8
EPSS 0.3%2024-05-01

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Other functions in these files

Functions in the same file that CVE fixes also changed.

1copy_processkernel/fork.c12 CVEs · 44 patches2012 to 2026
2dup_task_structkernel/fork.c3 CVEs · 14 patches2012 to 2026
3need_futex_hash_allocate_defaultkernel/fork.c2 CVEs · 9 patches2026
4__put_task_structkernel/fork.c2 CVEs · 2 patches2020
5unshare_fskernel/fork.c1 CVEs · 9 patches2026
6free_taskkernel/fork.c1 CVEs · 5 patches2025
7vm_area_dupkernel/fork.c1 CVEs · 4 patches2025
8mmput_asynckernel/fork.c1 CVEs · 4 patches2024

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 dup_mmap.

How many CVEs have patched dup_mmap?: 4 published CVEs changed dup_mmap in torvalds/linux, in 9 distinct patches totalling 62 changed lines, between 2024 and 2025.
What is the latest CVE that changed dup_mmap?: CVE-2025-21709 (kernel: be more careful about dup_mmap() failures and uprobe registering), published 2025-02-27, changed lines 763 to 783 of kernel/fork.c.
How does dup_mmap compare to the rest of torvalds/linux?: torvalds/linux has 19,281 CVEs with a located fix in total; 4 of them changed dup_mmap.
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/fork.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.

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