CVE-2026-46322
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
tun: free page on build_skb failure in tun_xdp_one()
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.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 043d222f93ab8c76b56a3b315cd8692e35affb6c | affected | git | 26fe549b5192536b6c1c68a2dfdc8c0dcf9fa4a9 | Unavailable | None listed |
| 043d222f93ab8c76b56a3b315cd8692e35affb6c | affected | git | 793385c154771603b8671dd8338927221e9d8d78 | Unavailable | None listed |
| 043d222f93ab8c76b56a3b315cd8692e35affb6c | affected | git | 2638a9c1521905bb5c5d1e95c8fbc09f79148ed7 | Unavailable | None listed |
| 043d222f93ab8c76b56a3b315cd8692e35affb6c | affected | git | 60d9c0d6cdde5420d6483c921b16fe5465eb5238 | Unavailable | None listed |
| 043d222f93ab8c76b56a3b315cd8692e35affb6c | affected | git | d16e38fac09a47bfcf98c1ad65a1bb53f94540f5 | Unavailable | None listed |
| 043d222f93ab8c76b56a3b315cd8692e35affb6c | affected | git | aa308e9dbb9acb17cacdbbce9e4504f69bac8385 | Unavailable | None listed |
| 043d222f93ab8c76b56a3b315cd8692e35affb6c | affected | git | 4fefc6156a162a9f50035c12091a5e5130c82c6e | Unavailable | None listed |
| 043d222f93ab8c76b56a3b315cd8692e35affb6c | affected | git | aa8963fdce667a42fb7f0bdd2909fadcab02f9a8 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4.20 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.20 | Unavailable | None listed |
| 5.10.259 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.210 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.176 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.143 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.93 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.35 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.0.12 | unaffected | semver | Unavailable | 7.0.* | None listed |
| 7.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |