{"cve":"CVE-2026-68292","nvd":{"published":"2026-08-10T13:20:18.583","modified":"2026-08-17T05:18:31.873","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nice: prevent tstamp ring allocation for non-PF VSI types\n\nThe pf->txtime_txqs bitmap tracks which Tx queues have ETF (Earliest\nTxTime First) offload enabled. This bitmap is indexed by queue number\nand is set by ice_offload_txtime(), which only operates on PF VSI\nqueues.\n\nHowever, ice_is_txtime_ena() does not check the VSI type before\nconsulting the bitmap. When ETF offload is enabled on PF Tx queue 0,\nbit 0 is set in pf->txtime_txqs. During a subsequent PCI reset\nrebuild, the CTRL VSI's Tx queue 0 is reconfigured and\nice_is_txtime_ena() is called for that ring. Since it only checks\npf->txtime_txqs by queue index without distinguishing VSI type, it\nfinds bit 0 set and returns true, matching the PF VSI's ETF queue,\nnot the CTRL VSI's. This causes ice_vsi_cfg_txq() to spuriously\nallocate a tstamp_ring for the CTRL VSI ring.\n\nSince CTRL VSI rings have no associated netdev, ice_clean_tx_ring()\ntakes an early return at the !netdev check before reaching\nice_free_tx_tstamp_ring(), leaking the allocation. Each PCI reset\nleaks one 64-byte tstamp_ring.\n\nFix this by restricting ice_is_txtime_ena() to return true only for\nPF VSI rings, since txtime_txqs is only meaningful for PF VSI queues.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/144539bbfd3cea1ab0fb6f5216d6004c1f4f029b","https://git.kernel.org/stable/c/684d4d0bda95a3fb21b3e29ff0f668f657707b54","https://git.kernel.org/stable/c/d0a21604c6abfa4956f3a511a1de174cec77a812"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:47:54.990491175+00:00"},"epss":{"cve":"CVE-2026-68292","score":0.00166,"percentile":0.05847,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}