PT-2026-64635 · Linux · Linux

CVE-2026-64414 · Publicado 2026-07-25 · Atualizado 2026-07-25

Mitre

In the Linux kernel, the following vulnerability has been resolved:

netfilter: handle unreadable frags

sashiko reports: When an skb with unreadable fragments (such as from devmem TCP, where skb frags readable(skb) returns false) is processed by the u32 module, skb copy bits() will safely return a negative error code [..]

xt u32: bail out with hotdrop in this case. gather frags: return -1, just as if we had no fragment header. nfnetlink queue: restrict to the linear part. nfnetlink log: restrict to the linear part.

v2:

• skb zerocopy helpers don't copy readable flag, i.e. nfnetlink queue is broken too xt u32 shouldn't return true if hotdrop was set.

Identificadores relacionados

CVE-2026-64414

Produtos afetados

Linux

Referências · 5

• https://git.kernel.org/stable/c/57056be3ec12e7d9ecd20a60d4060f510e4f284c · Nota
• https://git.kernel.org/stable/c/fc5bfe63bacf8a3ae307b62b34206406ca733354 · Nota
• https://git.kernel.org/stable/c/da5b58478a9c1b85608c9e40a3b8432d071b409e · Nota
• https://git.kernel.org/stable/c/3b13e7635795394705920cca1e1db7e4ca2e334b · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-64414 · Nota de Segurança