GHSA-7W83-2RGM-8VJ5
Vulnerability from github – Published: 2026-02-14 18:30 – Updated: 2026-04-02 12:31In the Linux kernel, the following vulnerability has been resolved:
ice: Fix PTP NULL pointer dereference during VSI rebuild
Fix race condition where PTP periodic work runs while VSI is being rebuilt, accessing NULL vsi->rx_rings.
The sequence was: 1. ice_ptp_prepare_for_reset() cancels PTP work 2. ice_ptp_rebuild() immediately queues PTP work 3. VSI rebuild happens AFTER ice_ptp_rebuild() 4. PTP work runs and accesses NULL vsi->rx_rings
Fix: Keep PTP work cancelled during rebuild, only queue it after VSI rebuild completes in ice_rebuild().
Added ice_ptp_queue_work() helper function to encapsulate the logic for queuing PTP work, ensuring it's only queued when PTP is supported and the state is ICE_PTP_READY.
Error log: [ 121.392544] ice 0000:60:00.1: PTP reset successful [ 121.392692] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 121.392712] #PF: supervisor read access in kernel mode [ 121.392720] #PF: error_code(0x0000) - not-present page [ 121.392727] PGD 0 [ 121.392734] Oops: Oops: 0000 [#1] SMP NOPTI [ 121.392746] CPU: 8 UID: 0 PID: 1005 Comm: ice-ptp-0000:60 Tainted: G S 6.19.0-rc6+ #4 PREEMPT(voluntary) [ 121.392761] Tainted: [S]=CPU_OUT_OF_SPEC [ 121.392773] RIP: 0010:ice_ptp_update_cached_phctime+0xbf/0x150 [ice] [ 121.393042] Call Trace: [ 121.393047] [ 121.393055] ice_ptp_periodic_work+0x69/0x180 [ice] [ 121.393202] kthread_worker_fn+0xa2/0x260 [ 121.393216] ? __pfx_ice_ptp_periodic_work+0x10/0x10 [ice] [ 121.393359] ? __pfx_kthread_worker_fn+0x10/0x10 [ 121.393371] kthread+0x10d/0x230 [ 121.393382] ? __pfx_kthread+0x10/0x10 [ 121.393393] ret_from_fork+0x273/0x2b0 [ 121.393407] ? __pfx_kthread+0x10/0x10 [ 121.393417] ret_from_fork_asm+0x1a/0x30 [ 121.393432]
{
"affected": [],
"aliases": [
"CVE-2026-23210"
],
"database_specific": {
"cwe_ids": [
"CWE-476"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-02-14T17:15:58Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nice: Fix PTP NULL pointer dereference during VSI rebuild\n\nFix race condition where PTP periodic work runs while VSI is being\nrebuilt, accessing NULL vsi-\u003erx_rings.\n\nThe sequence was:\n1. ice_ptp_prepare_for_reset() cancels PTP work\n2. ice_ptp_rebuild() immediately queues PTP work\n3. VSI rebuild happens AFTER ice_ptp_rebuild()\n4. PTP work runs and accesses NULL vsi-\u003erx_rings\n\nFix: Keep PTP work cancelled during rebuild, only queue it after\nVSI rebuild completes in ice_rebuild().\n\nAdded ice_ptp_queue_work() helper function to encapsulate the logic\nfor queuing PTP work, ensuring it\u0027s only queued when PTP is supported\nand the state is ICE_PTP_READY.\n\nError log:\n[ 121.392544] ice 0000:60:00.1: PTP reset successful\n[ 121.392692] BUG: kernel NULL pointer dereference, address: 0000000000000000\n[ 121.392712] #PF: supervisor read access in kernel mode\n[ 121.392720] #PF: error_code(0x0000) - not-present page\n[ 121.392727] PGD 0\n[ 121.392734] Oops: Oops: 0000 [#1] SMP NOPTI\n[ 121.392746] CPU: 8 UID: 0 PID: 1005 Comm: ice-ptp-0000:60 Tainted: G S 6.19.0-rc6+ #4 PREEMPT(voluntary)\n[ 121.392761] Tainted: [S]=CPU_OUT_OF_SPEC\n[ 121.392773] RIP: 0010:ice_ptp_update_cached_phctime+0xbf/0x150 [ice]\n[ 121.393042] Call Trace:\n[ 121.393047] \u003cTASK\u003e\n[ 121.393055] ice_ptp_periodic_work+0x69/0x180 [ice]\n[ 121.393202] kthread_worker_fn+0xa2/0x260\n[ 121.393216] ? __pfx_ice_ptp_periodic_work+0x10/0x10 [ice]\n[ 121.393359] ? __pfx_kthread_worker_fn+0x10/0x10\n[ 121.393371] kthread+0x10d/0x230\n[ 121.393382] ? __pfx_kthread+0x10/0x10\n[ 121.393393] ret_from_fork+0x273/0x2b0\n[ 121.393407] ? __pfx_kthread+0x10/0x10\n[ 121.393417] ret_from_fork_asm+0x1a/0x30\n[ 121.393432] \u003c/TASK\u003e",
"id": "GHSA-7w83-2rgm-8vj5",
"modified": "2026-04-02T12:31:04Z",
"published": "2026-02-14T18:30:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23210"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7565d4df66b6619b50dc36618d8b8f1787d77e19"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ba0c7fff6616025a7d3a9e887e7ce16b06dc34b9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/fc6f36eaaedcf4b81af6fe1a568f018ffd530660"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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