🛡️ AZL-64761 — kernel

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

CVE-2025-38190 affecting package kernel for versions less than 6.6.96.1-1

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

AZL-64761 is recorded against 1 package.

  • kernel (fixed in 6.6.96.1-1)

Timeline and source

Published on 4 July 2025 and last revised on 21 April 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Web)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2025-07-04
Updated 2026-08-12
Modified 2026-04-21
Fix URL N/A

Affected Packages

Software From version Fixed in
kernel — 6.6.96.1-1

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