CVE-2025-38190
atm: Revert atm_account_tx() if copy_from_iter_full() fails.
Reported by linux · Published July 4, 2025
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~
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| linux_kernel | linux | 6.15.4, 6.12.35, 6.6.95, 6.1.142, 5.15.186, 5.10.239, 5.4.295 |
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 |
| Linux | Linux | 2.6.12, 0, 5.4.295 |
| Linux | Linux | 6.16, 5.15.186, 6.6.95 |
| linux | linux_kernel | 2.6.12, 2.6.12, 2.6.12 |
Timeline
- Jul 4, 2025 CVE Published
- Jul 5, 2025 EPSS Score (30 in total, the first dated here)
- Oct 12, 2025 PoC Published (17 in total, the first dated here)
- Nov 17, 2025 CVE Updated
- Mar 29, 2026 Distribution Patch (205 in total, the first dated here)
- Mar 29, 2026 Security Advisory (255 in total, the first dated here)
- Jun 9, 2026 Coalition ESS Score
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