5.5

CVE-2025-38190

atm: Revert atm_account_tx() if copy_from_iter_full() fails.

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~
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 2.6.13 < 5.4.295
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.239
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.186
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.142
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.95
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.35
Linux ≫ Linux Kernel Version >= 6.13 < 6.15.4
Linux ≫ Linux Kernel Version 2.6.12 Update -
Linux ≫ Linux Kernel Version 2.6.12 Update rc2
Linux ≫ Linux Kernel Version 2.6.12 Update rc3
Linux ≫ Linux Kernel Version 2.6.12 Update rc4
Linux ≫ Linux Kernel Version 2.6.12 Update rc5
Linux ≫ Linux Kernel Version 6.16 Update rc1
Linux ≫ Linux Kernel Version 6.16 Update rc2
Debian ≫ Debian Linux Version 11.0
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.17% 0.064
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/5e0d00992118e234ebf29d5145c1cc920342777e
Patch
https://git.kernel.org/stable/c/c12430edd92fd49a4800b0f3fb395b50cb16bcc1
Patch
https://git.kernel.org/stable/c/287b4f085d2ca3375cf1ee672af27410c64777e8
Patch
https://git.kernel.org/stable/c/2252c539c43f9a1431a7e8b34e3c18e9dd77a96d
Patch
https://git.kernel.org/stable/c/3902205eadf35db59dbc2186c2a98b9e6182efa5
Patch
https://git.kernel.org/stable/c/3d828519bd69bfcaabdd942a872679617ef06739
Patch
https://git.kernel.org/stable/c/7d6bc28cfe5c8e3a279b4b4bdeed6698b2702685
Patch
https://git.kernel.org/stable/c/7851263998d4269125fd6cb3fdbfc7c6db853859
Patch
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
Third Party Advisory