CVE-2025-38190

MEDIUM

MEDIUM Priority: 0.01 BB Relevance: 36/100

Published: 2025-07-04 Modified: 2026-11-05 First seen: 2026-11-05 Status: active

Attack Surface

Low Complexity No Interaction

CVSS Vector Breakdown

AV: Local

AC: Low

PR: Low

UI: None

S: Unchanged

C: None

I: None

A: High

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~

Affected Software (18)

Vendor	Product	Version
Linux	Linux	1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 5e0d00992118e234ebf29d5145c1cc920342777e
Linux	Linux	1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < c12430edd92fd49a4800b0f3fb395b50cb16bcc1
Linux	Linux	1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 287b4f085d2ca3375cf1ee672af27410c64777e8
Linux	Linux	1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2252c539c43f9a1431a7e8b34e3c18e9dd77a96d
Linux	Linux	1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 3902205eadf35db59dbc2186c2a98b9e6182efa5
Linux	Linux	1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 3d828519bd69bfcaabdd942a872679617ef06739
Linux	Linux	1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 7d6bc28cfe5c8e3a279b4b4bdeed6698b2702685
Linux	Linux	1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 7851263998d4269125fd6cb3fdbfc7c6db853859
Linux	Linux	2.6.12
debian	debian_linux	11.0
linux	linux_kernel	2.6.13 – 5.4.295
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