CVE-2026-64056
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.55%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.55% probability · 44th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/06937db21ee311ed07eba47954447245041a982dPatch
- https://git.kernel.org/stable/c/27856d533eca3804008695f61c1e4d5ff984196bPatch
- https://git.kernel.org/stable/c/3b249988d774dacf13b203817e971934a42243c4Patch
- https://git.kernel.org/stable/c/67a35e7da7ef9d2f000aa758552a128324c604a0Patch
- https://git.kernel.org/stable/c/6bba24e9ebe6f1c0b356cd471e36bdc7fa434897Patch
- https://git.kernel.org/stable/c/72158ea185b27afae163949b0e86164cb6b64e55Patch
- https://git.kernel.org/stable/c/b6b22824b30e48ce1df3a2e80990f4b8505deb50Patch
- https://git.kernel.org/stable/c/cfd62907f3cdbc3b6da8f49ba907c0390018fe5ePatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.