{"id":"CVE-2025-21890","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nidpf: fix checksums set in idpf_rx_rsc()\n\nidpf_rx_rsc() uses skb_transport_offset(skb) while the transport header\nis not set yet.\n\nThis triggers the following warning f…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nidpf: fix checksums set in idpf_rx_rsc()\n\nidpf_rx_rsc() uses skb_transport_offset(skb) while the transport header\nis not set yet.\n\nThis triggers the following warning f…","severity":"high","cvss":8.2,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 6.7, < 6.12.18","linux_kernel >= 6.13, < 6.13.6","linux_kernel = 6.14"],"patched":["linux_kernel 6.13.6"],"published":"2025-03-27","updated":"2026-07-30","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-21890","references":[{"url":"https://git.kernel.org/stable/c/4279bbebe00ffdbfd1a77567961886e35465cbdc","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/57e68f256911f3ab4b997141975561646ccbbb8c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/674fcb4f4a7e3e277417a01788cc6daae47c3804","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd"],"epss":0.00374,"epssPercentile":0.31348,"ingestedAt":"2026-07-30T06:53:10.781Z","slug":"CVE-2025-21890","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nidpf: fix checksums set in idpf_rx_rsc()\n\nidpf_rx_rsc() uses skb_transport_offset(skb) while the transport header\nis not set yet.\n\nThis triggers the following warning for CONFIG_DEBUG_NET=y builds.\n\nDEBUG_NET_WARN_ON_ONCE(!skb_transport_header_was_set(skb))\n\n[   69.261620] WARNING: CPU: 7 PID: 0 at ./include/linux/skbuff.h:3020 idpf_vport_splitq_napi_poll (include/linux/skbuff.h:3020) idpf\n[   69.261629] Modules linked in: vfat fat dummy bridge intel_uncore_frequency_tpmi intel_uncore_frequency_common intel_vsec_tpmi idpf intel_vsec cdc_ncm cdc_eem cdc_ether usbnet mii xhci_pci xhci_hcd ehci_pci ehci_hcd libeth\n[   69.261644] CPU: 7 UID: 0 PID: 0 Comm: swapper/7 Tainted: G S      W          6.14.0-smp-DEV #1697\n[   69.261648] Tainted: [S]=CPU_OUT_OF_SPEC, [W]=WARN\n[   69.261650] RIP: 0010:idpf_vport_splitq_napi_poll (include/linux/skbuff.h:3020) idpf\n[   69.261677] ? __warn (kernel/panic.c:242 kernel/panic.c:748)\n[   69.261682] ? idpf_vport_splitq_napi_poll (include/linux/skbuff.h:3020) idpf\n[   69.261687] ? report_bug (lib/bug.c:?)\n[   69.261690] ? handle_bug (arch/x86/kernel/traps.c:285)\n[   69.261694] ? exc_invalid_op (arch/x86/kernel/traps.c:309)\n[   69.261697] ? asm_exc_invalid_op (arch/x86/include/asm/idtentry.h:621)\n[   69.261700] ? __pfx_idpf_vport_splitq_napi_poll (drivers/net/ethernet/intel/idpf/idpf_txrx.c:4011) idpf\n[   69.261704] ? idpf_vport_splitq_napi_poll (include/linux/skbuff.h:3020) idpf\n[   69.261708] ? idpf_vport_splitq_napi_poll (drivers/net/ethernet/intel/idpf/idpf_txrx.c:3072) idpf\n[   69.261712] __napi_poll (net/core/dev.c:7194)\n[   69.261716] net_rx_action (net/core/dev.c:7265)\n[   69.261718] ? __qdisc_run (net/sched/sch_generic.c:293)\n[   69.261721] ? sched_clock (arch/x86/include/asm/preempt.h:84 arch/x86/kernel/tsc.c:288)\n[   69.261726] handle_softirqs (kernel/softirq.c:561)\n\n## Affected\n\n- `linux_kernel >= 6.7, < 6.12.18`\n- `linux_kernel >= 6.13, < 6.13.6`\n- `linux_kernel = 6.14`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.13.6`","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":45.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}