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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-99057

xen/netfront: don't leak the skb when xennet_fill_frags() fails

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: xen/netfront: don't leak the skb when xennet_fill_frags() fails When a response chain has more slots than fit in the skb's frags, xennet_fill_frags() returns an error and xennet_poll() jumps to its error path. That path moves what's left on tmpq to errq to be freed, but the skb being filled was already dequeued from tmpq, so it's never freed. Each chain that overflows leaks the skb and the pages attached to it as frags, and the backend decides how many slots it sends. Put the skb back on tmpq before taking the error path, like the xennet_set_skb_gso() failure just above it does.

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

  • ad4f15dc2c70b1de5e0a64d27335962fbc9cf71c to < 6e6bd1051daabc327233c3ca3d00613fc6783c8eaffected
  • ad4f15dc2c70b1de5e0a64d27335962fbc9cf71c to < 0cf0a25a639c535146c5eb4480d256995721aed6affected
  • ad4f15dc2c70b1de5e0a64d27335962fbc9cf71c to < 53a131eb2a998c77e2851401b32b712d6c6e8487affected
  • ad4f15dc2c70b1de5e0a64d27335962fbc9cf71c to < 5051df031144753d3e18862514969146b601d089affected
  • ad4f15dc2c70b1de5e0a64d27335962fbc9cf71c to < 99011a11c97340ef7290df7dc199305c73fab2f2affected
  • ad4f15dc2c70b1de5e0a64d27335962fbc9cf71c to < 086944c1c2cbb683543bc3ff08637847b03c8009affected
  • ad4f15dc2c70b1de5e0a64d27335962fbc9cf71c to < 84e3ea6502b5f14ce8d499d0b6e0e38386274cf0affected
  • ad4f15dc2c70b1de5e0a64d27335962fbc9cf71c to < 93ccaf1c26e2133396173b76a071e59024daa622affected
  • bd1468048aa3e2af865da92990539946d4483989affected
  • 29a6193c0d74390c004808441061ac1812cf6f51affected
  • 7eced4478f4ec6ff0a603ddfd6e24a5d3831fca7affected
  • b73a161e9beff24bf1803ba393dff95a255268f9affected
  • 4.4.159 to < 4.5affected
  • 4.9.130 to < 4.10affected
  • 4.14.73 to < 4.15affected
  • 4.18.11 to < 4.19affected

Linux Linux

Default version status: affected

  • 4.19affected
  • 0 to < 4.19unaffected
  • 5.10.273 to ≤ 5.10.*unaffected
  • 5.15.224 to ≤ 5.15.*unaffected
  • 6.1.191 to ≤ 6.1.*unaffected
  • 6.6.160 to ≤ 6.6.*unaffected
  • 6.12.113 to ≤ 6.12.*unaffected
  • 6.18.57 to ≤ 6.18.*unaffected
  • 7.2.11 to ≤ 7.2.*unaffected
  • 7.3 to ≤ *unaffected

References