Aller au contenu
en Se connecter
7.1 Élevée

CVE-2026-46321 In the Linux kernel, the following vulnerability has been resolved: tun: free page on short-frame rejection in…

Description

In the Linux kernel, the following vulnerability has been resolved: tun: free page on short-frame rejection in tun_xdp_one() tun_xdp_one() returns -EINVAL on a frame shorter than ETH_HLEN without freeing the page that vhost_net_build_xdp() allocated for it. tun_sendmsg() discards that -EINVAL and still returns total_len, so vhost_tx_batch() takes the success path and never frees the page; each short frame in a batch leaks one page-frag chunk. A local process that can open /dev/net/tun and /dev/vhost-net can hit this path: it attaches a tun/tap device as the vhost-net backend and feeds TX descriptors whose length minus the virtio-net header is below ETH_HLEN. Each kick leaks the page-frag chunks for that batch, and a tight submission loop exhausts host memory and triggers an OOM panic. Free the page before returning -EINVAL, matching the XDP-program error path in the same function.

Produits et versions touchés

Produit Versions touchées Corrigé en
Linux 7.1 premières → < 7.1 7.1
Linux 7.0 premières → < 7.0.12 7.0.12
Linux 6.18 premières → < 6.18.35 6.18.35
Linux 6.12 premières → < 6.12.93 6.12.93
Linux 6.11 Pas de correctif indiqué
Linux 6.6 premières → < 6.6.143 6.6.143
Linux 6.1 premières → < 6.1.176 6.1.176
Linux 5.15 premières → < 5.15.210 5.15.210
Linux 5.10 premières → < 5.10.259 5.10.259
Afficher l’autre branche
Produit Versions touchées Corrigé en
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Versions non publiées

Références

Chronologie

  1. Publiée
  2. Dernière modification

Autres CVE de Linux

Les 18283 CVE de Linux →
CVE-2026-99270 In the Linux kernel, the following vulnerability has been resolved: tcp: Fix potential UAF in reqsk_timer_handler() 8.1 Élevée CVE-2026-99269 In the Linux kernel, the following vulnerability has been resolved: sched_ext: Wait for SCX_OPSS_DISPATCHING before… 7.8 Élevée CVE-2026-99260 In the Linux kernel, the following vulnerability has been resolved: ntfs: fix resident conversion in ntfs_new_attr_flags… Non notée CVE-2026-99261 In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: correct reservation fence slots for… Non notée
Suivre cette CVE