Vulnerability in Linux

[ Description ]Official description

In the Linux kernel, the following vulnerability has been resolved: net: ethernet: cortina: Ack RX overrun interrupt correctly The RX overrun interrupt is reported in interrupt status register 4, but gmac_irq() acknowledges it using the RX descriptor error bit from status register 0. For GMAC0 this writes the GMAC1 overrun bit, while for GMAC1 the shift leaves no bit in the 32-bit register. Acknowledge the same per-port RX overrun bit that was detected.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund5 Oct 2026WID-SEC-2026-3743

  Linux Kernel: Multiple vulnerabilities Translated from German

  Risk mediumCVE-2026-98221CVE-2026-98181CVE-2026-98248+204 more CVEs

[ References ]References

• git.kernel.org/stable/c/1163cc82dcbc145f912bf2106ab668762f53e483
• git.kernel.org/stable/c/12a0c7bb448c1899ea3d8f97fa47a8740044e16d
• git.kernel.org/stable/c/1dd85662fee6e2ac580b1c4f9a0c0a7ae6e31f0e
• git.kernel.org/stable/c/2f23fa11fef9b4a93335894379d82238f0a28228
• git.kernel.org/stable/c/472493d1d3334d104b9873abc1c2d80ed3b144f3
• git.kernel.org/stable/c/4f33e036e827f368cdb10bcb15ad098448aca0f5
• git.kernel.org/stable/c/d4bd670454390aab72ab9fb7b73bce2966c33fe3
• git.kernel.org/stable/c/d72d87926ca33c6766dc73ace46859d7220a45bb