CVE-2026-53008
Full vulnerability record from the local CVENow database.
Description
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
View original CVE JSON
{
"id": "CVE-2026-53008",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2026-06-24T17:17:12.023",
"lastModified": "2026-11-06T17:18:01.007",
"vulnStatus": "Modified",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nice: fix race condition in TX timestamp ring cleanup\n\nFix a race condition between ice_free_tx_tstamp_ring() and ice_tx_map()\nthat can cause a NULL pointer dereference.\n\nice_free_tx_tstamp_ring currently clears the ICE_TX_FLAGS_TXTIME flag\nafter NULLing the tstamp_ring. This could allow a concurrent ice_tx_map\ncall on another CPU to dereference the tstamp_ring, which could lead to\na NULL pointer dereference.\n\n CPU A:ice_free_tx_tstamp_ring() | CPU B:ice_tx_map()\n --------------------------------|---------------------------------\n tx_ring->tstamp_ring = NULL |\n | ice_is_txtime_cfg() -> true\n | tstamp_ring = tx_ring->tstamp_ring\n | tstamp_ring->count // NULL deref!\n flags &= ~ICE_TX_FLAGS_TXTIME |\n\nFix by:\n1. Reordering ice_free_tx_tstamp_ring() to clear the flag before\n NULLing the pointer, with smp_wmb() to ensure proper ordering.\n2. Adding smp_rmb() in ice_tx_map() after the flag check to order the\n flag read before the pointer read, using READ_ONCE() for the\n pointer, and adding a NULL check as a safety net.\n3. Converting tx_ring->flags from u8 to DECLARE_BITMAP() and using\n atomic bitops (set_bit(), clear_bit(), test_bit()) for all flag\n operations throughout the driver:\n - ICE_TX_RING_FLAGS_XDP\n - ICE_TX_RING_FLAGS_VLAN_L2TAG1\n - ICE_TX_RING_FLAGS_VLAN_L2TAG2\n - ICE_TX_RING_FLAGS_TXTIME"
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"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"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "ccde82e909467abdf098a8ee6f63e1ecf9a47ce5",
"lessThan": "e98cea6d5562f546482fab8ad571e95e3fff1800",
"versionType": "git",
"status": "affected"
},
{
"version": "ccde82e909467abdf098a8ee6f63e1ecf9a47ce5",
"lessThan": "097409d20465723283632515df73038a4a853eda",
"versionType": "git",
"status": "affected"
},
{
"version": "ccde82e909467abdf098a8ee6f63e1ecf9a47ce5",
"lessThan": "7c72ec18c2a4111204c2e915f8e4f6d849ce9398",
"versionType": "git",
"status": "affected"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "affected",
"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"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "6.18",
"status": "affected"
},
{
"version": "0",
"lessThan": "6.18",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "6.18.57",
"lessThanOrEqual": "6.18.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.0.10",
"lessThanOrEqual": "7.0.*",
"versionType": "semver",
"status": "unaffected"
},
{
"version": "7.1",
"lessThanOrEqual": "*",
"versionType": "original_commit_for_fix",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Primary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
"baseScore": 4.7,
"baseSeverity": "MEDIUM",
"attackVector": "LOCAL",
"attackComplexity": "HIGH",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.0,
"impactScore": 3.6
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-11-06T16:16:19.046471Z",
"id": "CVE-2026-53008",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "CWE-362"
}
]
}
],
"configurations": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.18",
"versionEndExcluding": "7.0.10",
"matchCriteriaId": "A7DEFF51-5CA4-4DA7-8D00-D5A5BE1058AC"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/097409d20465723283632515df73038a4a853eda",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/7c72ec18c2a4111204c2e915f8e4f6d849ce9398",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
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},
{
"url": "https://git.kernel.org/stable/c/e98cea6d5562f546482fab8ad571e95e3fff1800",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
]
}