ice: fix race condition in TX timestamp ring cleanup
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
CVE-2026-53008
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-53008
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "ccde82e909467abdf098a8ee6f63e1ecf9a47ce5",
"lessThan": "e98cea6d5562f546482fab8ad571e95e3fff1800",
"versionType": "git"
},
{
"status": "affected",
"version": "ccde82e909467abdf098a8ee6f63e1ecf9a47ce5",
"lessThan": "097409d20465723283632515df73038a4a853eda",
"versionType": "git"
},
{
"status": "affected",
"version": "ccde82e909467abdf098a8ee6f63e1ecf9a47ce5",
"lessThan": "7c72ec18c2a4111204c2e915f8e4f6d849ce9398",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/ethernet/intel/ice/ice.h",
"drivers/net/ethernet/intel/ice/ice_dcb_lib.c",
"drivers/net/ethernet/intel/ice/ice_lib.c",
"drivers/net/ethernet/intel/ice/ice_txrx.c",
"drivers/net/ethernet/intel/ice/ice_txrx.h"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.18"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.18",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.18.57",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.10",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/ethernet/intel/ice/ice.h",
"drivers/net/ethernet/intel/ice/ice_dcb_lib.c",
"drivers/net/ethernet/intel/ice/ice_lib.c",
"drivers/net/ethernet/intel/ice/ice_txrx.c",
"drivers/net/ethernet/intel/ice/ice_txrx.h"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-53008
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #28610 · Revision 1
- Added to Heist Feed
- Publisher date