CVE-2025-38190
Analyzed Analyzed - Analysis Complete
BaseFortify

Publication date: 2025-07-04

Last updated on: 2025-12-18

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: atm: Revert atm_account_tx() if copy_from_iter_full() fails. In vcc_sendmsg(), we account skb->truesize to sk->sk_wmem_alloc by atm_account_tx(). It is expected to be reverted by atm_pop_raw() later called by vcc->dev->ops->send(vcc, skb). However, vcc_sendmsg() misses the same revert when copy_from_iter_full() fails, and then we will leak a socket. Let's factorise the revert part as atm_return_tx() and call it in the failure path. Note that the corresponding sk_wmem_alloc operation can be found in alloc_tx() as of the blamed commit. $ git blame -L:alloc_tx net/atm/common.c c55fa3cccbc2c~
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2025-07-04
Last Modified
2025-12-18
Generated
2026-05-07
AI Q&A
2025-07-04
EPSS Evaluated
2026-05-05
NVD
CVE-2025-38190
Affected Vendors & Products
Showing 15 associated CPEs
Vendor Product Version / Range
linux linux_kernel From 2.6.13 (inc) to 5.4.295 (exc)
linux linux_kernel From 5.5 (inc) to 5.10.239 (exc)
linux linux_kernel From 5.11 (inc) to 5.15.186 (exc)
linux linux_kernel From 5.16 (inc) to 6.1.142 (exc)
linux linux_kernel From 6.2 (inc) to 6.6.95 (exc)
linux linux_kernel From 6.7 (inc) to 6.12.35 (exc)
linux linux_kernel From 6.13 (inc) to 6.15.4 (exc)
linux linux_kernel 2.6.12
linux linux_kernel 2.6.12
linux linux_kernel 2.6.12
linux linux_kernel 2.6.12
linux linux_kernel 2.6.12
linux linux_kernel 6.16
linux linux_kernel 6.16
debian debian_linux 11.0
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-NVD-CWE-noinfo
Attack-Flow Graph
AI Powered Q&A
How can this vulnerability impact me? :

This vulnerability can lead to a socket memory leak in the Linux kernel, which may cause resource exhaustion over time. This could degrade system performance or stability, potentially leading to denial of service conditions if the system runs out of memory resources for socket operations.


Can you explain this vulnerability to me?

This vulnerability in the Linux kernel involves a failure to properly revert memory accounting when a function called copy_from_iter_full() fails inside vcc_sendmsg(). Specifically, atm_account_tx() increases the socket's memory allocation counter (sk_wmem_alloc), but if copy_from_iter_full() fails, the corresponding revert operation is missed, causing a socket memory leak. The fix involves factoring out the revert operation into atm_return_tx() and ensuring it is called on failure to prevent the leak.


Ask Our AI Assistant
Need more information? Ask your question to get an AI reply (Powered by our expertise)
0/70
EPSS Chart