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 products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 5e0d00992118e234ebf29d5145c1cc920342777eaffected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < c12430edd92fd49a4800b0f3fb395b50cb16bcc1affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 287b4f085d2ca3375cf1ee672af27410c64777e8affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 2252c539c43f9a1431a7e8b34e3c18e9dd77a96daffected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 3902205eadf35db59dbc2186c2a98b9e6182efa5affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 3d828519bd69bfcaabdd942a872679617ef06739affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 7d6bc28cfe5c8e3a279b4b4bdeed6698b2702685affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 7851263998d4269125fd6cb3fdbfc7c6db853859affected
Linux Linux
Default version status: affected
2.6.12affected0 to < 2.6.12unaffected5.4.295 to ≤ 5.4.*unaffected5.10.239 to ≤ 5.10.*unaffected5.15.186 to ≤ 5.15.*unaffected6.1.142 to ≤ 6.1.*unaffected6.6.95 to ≤ 6.6.*unaffected6.12.35 to ≤ 6.12.*unaffected6.15.4 to ≤ 6.15.*unaffected6.16 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/5e0d00992118e234ebf29d5145c1cc920342777e ↗
- https://git.kernel.org/stable/c/c12430edd92fd49a4800b0f3fb395b50cb16bcc1 ↗
- https://git.kernel.org/stable/c/287b4f085d2ca3375cf1ee672af27410c64777e8 ↗
- https://git.kernel.org/stable/c/2252c539c43f9a1431a7e8b34e3c18e9dd77a96d ↗
- https://git.kernel.org/stable/c/3902205eadf35db59dbc2186c2a98b9e6182efa5 ↗
- https://git.kernel.org/stable/c/3d828519bd69bfcaabdd942a872679617ef06739 ↗
- https://git.kernel.org/stable/c/7d6bc28cfe5c8e3a279b4b4bdeed6698b2702685 ↗
- https://git.kernel.org/stable/c/7851263998d4269125fd6cb3fdbfc7c6db853859 ↗
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html ↗
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html ↗