GHSA-w9f5-vpqq-grqjMediumCVSS 5.5
In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: clamp...
🔗 CVE IDs covered (1)
📋 Description
In the Linux kernel, the following vulnerability has been resolved:
netfilter: conntrack: clamp maximum hashtable size to INT_MAX
Use INT_MAX as maximum size for the conntrack hashtable. Otherwise, it is possible to hit WARN_ON_ONCE in __kvmalloc_node_noprof() when resizing hashtable because __GFP_NOWARN is unset. See:
0708a0afe291 ("mm: Consider __GFP_NOWARN flag for oversized kvmalloc() calls")
Note: hashtable resize is only possible from init_netns.
🔗 References (12)
- https://nvd.nist.gov/vuln/detail/CVE-2025-21648
- https://git.kernel.org/stable/c/5552b4fd44be3393b930434a7845d8d95a2a3c33
- https://git.kernel.org/stable/c/b541ba7d1f5a5b7b3e2e22dc9e40e18a7d6dbc13
- https://git.kernel.org/stable/c/d5807dd1328bbc86e059c5de80d1bbee9d58ca3d
- https://git.kernel.org/stable/c/f559357d035877b9d0dcd273e0ff83e18e1d46aa
- https://git.kernel.org/stable/c/b1b2353d768f1b80cd7fe045a70adee576b9b338
- https://git.kernel.org/stable/c/a965f7f0ea3ae61b9165bed619d5d6da02c75f80
- https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
- https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://github.com/advisories/GHSA-w9f5-vpqq-grqj