Time-of-check Time-of-use (TOCTOU) Affecting rv package, versions *


Severity

Recommended
0.0
medium
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.16% (6th percentile)

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  • Snyk IDSNYK-CENTOS10-RV-17610779
  • published27 Jun 2026
  • disclosed24 Jun 2026

Introduced: 24 Jun 2026

NewCVE-2026-53008  (opens in a new tab)
CWE-367  (opens in a new tab)

How to fix?

There is no fixed version for Centos:10 rv.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rv package and not the rv package as distributed by Centos. See How to fix? for Centos:10 relevant fixed versions and status.

In the Linux kernel, the following vulnerability has been resolved:

ice: fix race condition in TX timestamp ring cleanup

Fix a race condition between ice_free_tx_tstamp_ring() and ice_tx_map() that can cause a NULL pointer dereference.

ice_free_tx_tstamp_ring currently clears the ICE_TX_FLAGS_TXTIME flag after NULLing the tstamp_ring. This could allow a concurrent ice_tx_map call on another CPU to dereference the tstamp_ring, which could lead to a NULL pointer dereference.

CPU A:ice_free_tx_tstamp_ring() CPU B:ice_tx_map()
tx_ring->tstamp_ring = NULL
                              | ice_is_txtime_cfg() -> true
                              | tstamp_ring = tx_ring->tstamp_ring
                              | tstamp_ring->count  // NULL deref!

flags &= ~ICE_TX_FLAGS_TXTIME |

Fix by:

  1. Reordering ice_free_tx_tstamp_ring() to clear the flag before NULLing the pointer, with smp_wmb() to ensure proper ordering.
  2. Adding smp_rmb() in ice_tx_map() after the flag check to order the flag read before the pointer read, using READ_ONCE() for the pointer, and adding a NULL check as a safety net.
  3. Converting tx_ring->flags from u8 to DECLARE_BITMAP() and using atomic bitops (set_bit(), clear_bit(), test_bit()) for all flag operations throughout the driver:
    • ICE_TX_RING_FLAGS_XDP
    • ICE_TX_RING_FLAGS_VLAN_L2TAG1
    • ICE_TX_RING_FLAGS_VLAN_L2TAG2
    • ICE_TX_RING_FLAGS_TXTIME

CVSS Base Scores

version 3.1