CVE-2026-68292

CVE CVE-2026-68292EUVD EUVD-2026-55393Published 2026-08-10T12:02:25.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: ice: prevent tstamp ring allocation for non-PF VSI types The pf->txtime_txqs bitmap tracks which Tx queues have ETF (Earliest TxTime First) offload enabled. This bitmap is indexed by queue number and is set by ice_offload_txtime(), which only operates on PF VSI queues. However, ice_is_txtime_ena() does not check the VSI type before consulting the bitmap. When ETF offload is enabled on PF Tx queue 0, bit 0 is set in pf->txtime_txqs. During a subsequent PCI reset rebuild, the CTRL VSI's Tx queue 0 is reconfigured and ice_is_txtime_ena() is called for that ring. Since it only checks pf->txtime_txqs by queue index without distinguishing VSI type, it finds bit 0 set and returns true, matching the PF VSI's ETF queue, not the CTRL VSI's. This causes ice_vsi_cfg_txq() to spuriously allocate a tstamp_ring for the CTRL VSI ring. Since CTRL VSI rings have no associated netdev, ice_clean_tx_ring() takes an early return at the !netdev check before reaching ice_free_tx_tstamp_ring(), leaking the allocation. Each PCI reset leaks one 64-byte tstamp_ring. Fix this by restricting ice_is_txtime_ena() to return true only for PF VSI rings, since txtime_txqs is only meaningful for PF VSI queues.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

• Linux — Linux patch: 7.1.6; patch: 0; ccde82e909467abdf098a8ee6f63e1ecf9a47ce5 <144539bbfd3cea1ab0fb6f5216d6004c1f4f029b; ccde82e909467abdf098a8ee6f63e1ecf9a47ce5 <684d4d0bda95a3fb21b3e29ff0f668f657707b54; patch: 6.18.42; 6.18; ccde82e909467abdf098a8ee6f63e1ecf9a47ce5 <d0a21604c6abfa4956f3a511a1de174cec77a812; patch: 7.2-rc5

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

• Linux — Linux

Patchlage reports hits and suspected hits. About everything else this system says nothing — neither this page nor the situation report ever claims that an estate is safe.