Description
In the Linux kernel, the following vulnerability has been resolved: tun: free page on build_skb failure in tun_xdp_one() When build_skb() fails in tun_xdp_one(), the function sets ret to -ENOMEM and jumps to the out label, which returns without freeing the page that vhost_net_build_xdp() allocated for the frame. As with the short-frame rejection path, tun_sendmsg() discards the per-buffer error and still returns total_len, so vhost_tx_batch() takes the success path and never frees the page. Each build_skb() failure in a batch leaks one page-frag chunk. Free the page before taking the error path, matching the put_page() the other error exits of tun_xdp_one() already perform.
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
043d222f93ab8c76b56a3b315cd8692e35affb6c to < 26fe549b5192536b6c1c68a2dfdc8c0dcf9fa4a9affected043d222f93ab8c76b56a3b315cd8692e35affb6c to < 793385c154771603b8671dd8338927221e9d8d78affected043d222f93ab8c76b56a3b315cd8692e35affb6c to < 2638a9c1521905bb5c5d1e95c8fbc09f79148ed7affected043d222f93ab8c76b56a3b315cd8692e35affb6c to < 60d9c0d6cdde5420d6483c921b16fe5465eb5238affected043d222f93ab8c76b56a3b315cd8692e35affb6c to < d16e38fac09a47bfcf98c1ad65a1bb53f94540f5affected043d222f93ab8c76b56a3b315cd8692e35affb6c to < aa308e9dbb9acb17cacdbbce9e4504f69bac8385affected043d222f93ab8c76b56a3b315cd8692e35affb6c to < 4fefc6156a162a9f50035c12091a5e5130c82c6eaffected043d222f93ab8c76b56a3b315cd8692e35affb6c to < aa8963fdce667a42fb7f0bdd2909fadcab02f9a8affected
Linux Linux
Default version status: affected
4.20affected0 to < 4.20unaffected5.10.259 to ≤ 5.10.*unaffected5.15.210 to ≤ 5.15.*unaffected6.1.176 to ≤ 6.1.*unaffected6.6.143 to ≤ 6.6.*unaffected6.12.93 to ≤ 6.12.*unaffected6.18.35 to ≤ 6.18.*unaffected7.0.12 to ≤ 7.0.*unaffected7.1 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/26fe549b5192536b6c1c68a2dfdc8c0dcf9fa4a9 ↗
- https://git.kernel.org/stable/c/793385c154771603b8671dd8338927221e9d8d78 ↗
- https://git.kernel.org/stable/c/2638a9c1521905bb5c5d1e95c8fbc09f79148ed7 ↗
- https://git.kernel.org/stable/c/60d9c0d6cdde5420d6483c921b16fe5465eb5238 ↗
- https://git.kernel.org/stable/c/d16e38fac09a47bfcf98c1ad65a1bb53f94540f5 ↗
- https://git.kernel.org/stable/c/aa308e9dbb9acb17cacdbbce9e4504f69bac8385 ↗
- https://git.kernel.org/stable/c/4fefc6156a162a9f50035c12091a5e5130c82c6e ↗
- https://git.kernel.org/stable/c/aa8963fdce667a42fb7f0bdd2909fadcab02f9a8 ↗
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html ↗