CVE-2026-64056
net: ethernet: cortina: Make RX SKB per-port
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
In the Linux kernel, the following vulnerability has been resolved: net: ethernet: cortina: Make RX SKB per-port The SKB used to assemble packets from fragments in gmac_rx() is static local, but the Gemini has two ethernet ports, meaning there can be races between the ports on a bad day if a device is using both. Make the RX SKB a per-port variable and carry it over between invocations in the port struct instead. Zero the pointer once we call napi_gro_frags(), on error (after calling napi_free_frags()) or if the port is stopped. Zero it in some place where not strictly necessary just to emphasize what is going on. This was found by Sashiko during normal patch review.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
4.16
References 8
git.kernel.org
- stable/c/27856d533eca3804008695f61c1e4d5ff984196b
- stable/c/b6b22824b30e48ce1df3a2e80990f4b8505deb50
- stable/c/6bba24e9ebe6f1c0b356cd471e36bdc7fa434897
- stable/c/3b249988d774dacf13b203817e971934a42243c4
- stable/c/72158ea185b27afae163949b0e86164cb6b64e55
- stable/c/cfd62907f3cdbc3b6da8f49ba907c0390018fe5e
- stable/c/67a35e7da7ef9d2f000aa758552a128324c604a0
- stable/c/06937db21ee311ed07eba47954447245041a982d