CVE-2025-38190
In the Linux kernel, the following vulnerability has been resolved: atm: Revert atm_account_tx() if copy_from_iter_full() fails.
Does this matter?
Lower severity and a low EPSS score (0.18%). Track it; it rarely justifies an emergency change on its own.
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 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.18% probability · 7th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel · debian/debian linux
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/2252c539c43f9a1431a7e8b34e3c18e9dd77a96dPatch
- https://git.kernel.org/stable/c/287b4f085d2ca3375cf1ee672af27410c64777e8Patch
- https://git.kernel.org/stable/c/3902205eadf35db59dbc2186c2a98b9e6182efa5Patch
- https://git.kernel.org/stable/c/3d828519bd69bfcaabdd942a872679617ef06739Patch
- https://git.kernel.org/stable/c/5e0d00992118e234ebf29d5145c1cc920342777ePatch
- https://git.kernel.org/stable/c/7851263998d4269125fd6cb3fdbfc7c6db853859Patch
- https://git.kernel.org/stable/c/7d6bc28cfe5c8e3a279b4b4bdeed6698b2702685Patch
- https://git.kernel.org/stable/c/c12430edd92fd49a4800b0f3fb395b50cb16bcc1Patch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.