gsd-2022-48652
Vulnerability from gsd
Modified
2024-02-26 06:00
Details
In the Linux kernel, the following vulnerability has been resolved:
ice: Fix crash by keep old cfg when update TCs more than queues
There are problems if allocated queues less than Traffic Classes.
Commit a632b2a4c920 ("ice: ethtool: Prohibit improper channel config
for DCB") already disallow setting less queues than TCs.
Another case is if we first set less queues, and later update more TCs
config due to LLDP, ice_vsi_cfg_tc() will failed but left dirty
num_txq/rxq and tc_cfg in vsi, that will cause invalid pointer access.
[ 95.968089] ice 0000:3b:00.1: More TCs defined than queues/rings allocated.
[ 95.968092] ice 0000:3b:00.1: Trying to use more Rx queues (8), than were allocated (1)!
[ 95.968093] ice 0000:3b:00.1: Failed to config TC for VSI index: 0
[ 95.969621] general protection fault: 0000 [#1] SMP NOPTI
[ 95.969705] CPU: 1 PID: 58405 Comm: lldpad Kdump: loaded Tainted: G U W O --------- -t - 4.18.0 #1
[ 95.969867] Hardware name: O.E.M/BC11SPSCB10, BIOS 8.23 12/30/2021
[ 95.969992] RIP: 0010:devm_kmalloc+0xa/0x60
[ 95.970052] Code: 5c ff ff ff 31 c0 5b 5d 41 5c c3 b8 f4 ff ff ff eb f4 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 89 d1 <8b> 97 60 02 00 00 48 8d 7e 18 48 39 f7 72 3f 55 89 ce 53 48 8b 4c
[ 95.970344] RSP: 0018:ffffc9003f553888 EFLAGS: 00010206
[ 95.970425] RAX: dead000000000200 RBX: ffffea003c425b00 RCX: 00000000006080c0
[ 95.970536] RDX: 00000000006080c0 RSI: 0000000000000200 RDI: dead000000000200
[ 95.970648] RBP: dead000000000200 R08: 00000000000463c0 R09: ffff888ffa900000
[ 95.970760] R10: 0000000000000000 R11: 0000000000000002 R12: ffff888ff6b40100
[ 95.970870] R13: ffff888ff6a55018 R14: 0000000000000000 R15: ffff888ff6a55460
[ 95.970981] FS: 00007f51b7d24700(0000) GS:ffff88903ee80000(0000) knlGS:0000000000000000
[ 95.971108] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 95.971197] CR2: 00007fac5410d710 CR3: 0000000f2c1de002 CR4: 00000000007606e0
[ 95.971309] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 95.971419] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 95.971530] PKRU: 55555554
[ 95.971573] Call Trace:
[ 95.971622] ice_setup_rx_ring+0x39/0x110 [ice]
[ 95.971695] ice_vsi_setup_rx_rings+0x54/0x90 [ice]
[ 95.971774] ice_vsi_open+0x25/0x120 [ice]
[ 95.971843] ice_open_internal+0xb8/0x1f0 [ice]
[ 95.971919] ice_ena_vsi+0x4f/0xd0 [ice]
[ 95.971987] ice_dcb_ena_dis_vsi.constprop.5+0x29/0x90 [ice]
[ 95.972082] ice_pf_dcb_cfg+0x29a/0x380 [ice]
[ 95.972154] ice_dcbnl_setets+0x174/0x1b0 [ice]
[ 95.972220] dcbnl_ieee_set+0x89/0x230
[ 95.972279] ? dcbnl_ieee_del+0x150/0x150
[ 95.972341] dcb_doit+0x124/0x1b0
[ 95.972392] rtnetlink_rcv_msg+0x243/0x2f0
[ 95.972457] ? dcb_doit+0x14d/0x1b0
[ 95.972510] ? __kmalloc_node_track_caller+0x1d3/0x280
[ 95.972591] ? rtnl_calcit.isra.31+0x100/0x100
[ 95.972661] netlink_rcv_skb+0xcf/0xf0
[ 95.972720] netlink_unicast+0x16d/0x220
[ 95.972781] netlink_sendmsg+0x2ba/0x3a0
[ 95.975891] sock_sendmsg+0x4c/0x50
[ 95.979032] ___sys_sendmsg+0x2e4/0x300
[ 95.982147] ? kmem_cache_alloc+0x13e/0x190
[ 95.985242] ? __wake_up_common_lock+0x79/0x90
[ 95.988338] ? __check_object_size+0xac/0x1b0
[ 95.991440] ? _copy_to_user+0x22/0x30
[ 95.994539] ? move_addr_to_user+0xbb/0xd0
[ 95.997619] ? __sys_sendmsg+0x53/0x80
[ 96.000664] __sys_sendmsg+0x53/0x80
[ 96.003747] do_syscall_64+0x5b/0x1d0
[ 96.006862] entry_SYSCALL_64_after_hwframe+0x65/0xca
Only update num_txq/rxq when passed check, and restore tc_cfg if setup
queue map failed.
Aliases
{
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2022-48652"
],
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nice: Fix crash by keep old cfg when update TCs more than queues\n\nThere are problems if allocated queues less than Traffic Classes.\n\nCommit a632b2a4c920 (\"ice: ethtool: Prohibit improper channel config\nfor DCB\") already disallow setting less queues than TCs.\n\nAnother case is if we first set less queues, and later update more TCs\nconfig due to LLDP, ice_vsi_cfg_tc() will failed but left dirty\nnum_txq/rxq and tc_cfg in vsi, that will cause invalid pointer access.\n\n[ 95.968089] ice 0000:3b:00.1: More TCs defined than queues/rings allocated.\n[ 95.968092] ice 0000:3b:00.1: Trying to use more Rx queues (8), than were allocated (1)!\n[ 95.968093] ice 0000:3b:00.1: Failed to config TC for VSI index: 0\n[ 95.969621] general protection fault: 0000 [#1] SMP NOPTI\n[ 95.969705] CPU: 1 PID: 58405 Comm: lldpad Kdump: loaded Tainted: G U W O --------- -t - 4.18.0 #1\n[ 95.969867] Hardware name: O.E.M/BC11SPSCB10, BIOS 8.23 12/30/2021\n[ 95.969992] RIP: 0010:devm_kmalloc+0xa/0x60\n[ 95.970052] Code: 5c ff ff ff 31 c0 5b 5d 41 5c c3 b8 f4 ff ff ff eb f4 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 89 d1 \u003c8b\u003e 97 60 02 00 00 48 8d 7e 18 48 39 f7 72 3f 55 89 ce 53 48 8b 4c\n[ 95.970344] RSP: 0018:ffffc9003f553888 EFLAGS: 00010206\n[ 95.970425] RAX: dead000000000200 RBX: ffffea003c425b00 RCX: 00000000006080c0\n[ 95.970536] RDX: 00000000006080c0 RSI: 0000000000000200 RDI: dead000000000200\n[ 95.970648] RBP: dead000000000200 R08: 00000000000463c0 R09: ffff888ffa900000\n[ 95.970760] R10: 0000000000000000 R11: 0000000000000002 R12: ffff888ff6b40100\n[ 95.970870] R13: ffff888ff6a55018 R14: 0000000000000000 R15: ffff888ff6a55460\n[ 95.970981] FS: 00007f51b7d24700(0000) GS:ffff88903ee80000(0000) knlGS:0000000000000000\n[ 95.971108] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 95.971197] CR2: 00007fac5410d710 CR3: 0000000f2c1de002 CR4: 00000000007606e0\n[ 95.971309] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[ 95.971419] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[ 95.971530] PKRU: 55555554\n[ 95.971573] Call Trace:\n[ 95.971622] ice_setup_rx_ring+0x39/0x110 [ice]\n[ 95.971695] ice_vsi_setup_rx_rings+0x54/0x90 [ice]\n[ 95.971774] ice_vsi_open+0x25/0x120 [ice]\n[ 95.971843] ice_open_internal+0xb8/0x1f0 [ice]\n[ 95.971919] ice_ena_vsi+0x4f/0xd0 [ice]\n[ 95.971987] ice_dcb_ena_dis_vsi.constprop.5+0x29/0x90 [ice]\n[ 95.972082] ice_pf_dcb_cfg+0x29a/0x380 [ice]\n[ 95.972154] ice_dcbnl_setets+0x174/0x1b0 [ice]\n[ 95.972220] dcbnl_ieee_set+0x89/0x230\n[ 95.972279] ? dcbnl_ieee_del+0x150/0x150\n[ 95.972341] dcb_doit+0x124/0x1b0\n[ 95.972392] rtnetlink_rcv_msg+0x243/0x2f0\n[ 95.972457] ? dcb_doit+0x14d/0x1b0\n[ 95.972510] ? __kmalloc_node_track_caller+0x1d3/0x280\n[ 95.972591] ? rtnl_calcit.isra.31+0x100/0x100\n[ 95.972661] netlink_rcv_skb+0xcf/0xf0\n[ 95.972720] netlink_unicast+0x16d/0x220\n[ 95.972781] netlink_sendmsg+0x2ba/0x3a0\n[ 95.975891] sock_sendmsg+0x4c/0x50\n[ 95.979032] ___sys_sendmsg+0x2e4/0x300\n[ 95.982147] ? kmem_cache_alloc+0x13e/0x190\n[ 95.985242] ? __wake_up_common_lock+0x79/0x90\n[ 95.988338] ? __check_object_size+0xac/0x1b0\n[ 95.991440] ? _copy_to_user+0x22/0x30\n[ 95.994539] ? move_addr_to_user+0xbb/0xd0\n[ 95.997619] ? __sys_sendmsg+0x53/0x80\n[ 96.000664] __sys_sendmsg+0x53/0x80\n[ 96.003747] do_syscall_64+0x5b/0x1d0\n[ 96.006862] entry_SYSCALL_64_after_hwframe+0x65/0xca\n\nOnly update num_txq/rxq when passed check, and restore tc_cfg if setup\nqueue map failed.",
"id": "GSD-2022-48652",
"modified": "2024-02-26T06:00:31.265539Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
"cve.org": {
"CVE_data_meta": {
"ASSIGNER": "cve@kernel.org",
"ID": "CVE-2022-48652",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Linux",
"version": {
"version_data": [
{
"version_affected": "\u003c",
"version_name": "a632b2a4c920",
"version_value": "7c945e5b4787"
},
{
"version_value": "not down converted",
"x_cve_json_5_version_data": {
"defaultStatus": "affected",
"versions": [
{
"status": "affected",
"version": "5.19"
},
{
"lessThan": "5.19",
"status": "unaffected",
"version": "0",
"versionType": "custom"
},
{
"lessThanOrEqual": "5.19.*",
"status": "unaffected",
"version": "5.19.12",
"versionType": "custom"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.0",
"versionType": "original_commit_for_fix"
}
]
}
}
]
}
}
]
},
"vendor_name": "Linux"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nice: Fix crash by keep old cfg when update TCs more than queues\n\nThere are problems if allocated queues less than Traffic Classes.\n\nCommit a632b2a4c920 (\"ice: ethtool: Prohibit improper channel config\nfor DCB\") already disallow setting less queues than TCs.\n\nAnother case is if we first set less queues, and later update more TCs\nconfig due to LLDP, ice_vsi_cfg_tc() will failed but left dirty\nnum_txq/rxq and tc_cfg in vsi, that will cause invalid pointer access.\n\n[ 95.968089] ice 0000:3b:00.1: More TCs defined than queues/rings allocated.\n[ 95.968092] ice 0000:3b:00.1: Trying to use more Rx queues (8), than were allocated (1)!\n[ 95.968093] ice 0000:3b:00.1: Failed to config TC for VSI index: 0\n[ 95.969621] general protection fault: 0000 [#1] SMP NOPTI\n[ 95.969705] CPU: 1 PID: 58405 Comm: lldpad Kdump: loaded Tainted: G U W O --------- -t - 4.18.0 #1\n[ 95.969867] Hardware name: O.E.M/BC11SPSCB10, BIOS 8.23 12/30/2021\n[ 95.969992] RIP: 0010:devm_kmalloc+0xa/0x60\n[ 95.970052] Code: 5c ff ff ff 31 c0 5b 5d 41 5c c3 b8 f4 ff ff ff eb f4 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 89 d1 \u003c8b\u003e 97 60 02 00 00 48 8d 7e 18 48 39 f7 72 3f 55 89 ce 53 48 8b 4c\n[ 95.970344] RSP: 0018:ffffc9003f553888 EFLAGS: 00010206\n[ 95.970425] RAX: dead000000000200 RBX: ffffea003c425b00 RCX: 00000000006080c0\n[ 95.970536] RDX: 00000000006080c0 RSI: 0000000000000200 RDI: dead000000000200\n[ 95.970648] RBP: dead000000000200 R08: 00000000000463c0 R09: ffff888ffa900000\n[ 95.970760] R10: 0000000000000000 R11: 0000000000000002 R12: ffff888ff6b40100\n[ 95.970870] R13: ffff888ff6a55018 R14: 0000000000000000 R15: ffff888ff6a55460\n[ 95.970981] FS: 00007f51b7d24700(0000) GS:ffff88903ee80000(0000) knlGS:0000000000000000\n[ 95.971108] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 95.971197] CR2: 00007fac5410d710 CR3: 0000000f2c1de002 CR4: 00000000007606e0\n[ 95.971309] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[ 95.971419] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[ 95.971530] PKRU: 55555554\n[ 95.971573] Call Trace:\n[ 95.971622] ice_setup_rx_ring+0x39/0x110 [ice]\n[ 95.971695] ice_vsi_setup_rx_rings+0x54/0x90 [ice]\n[ 95.971774] ice_vsi_open+0x25/0x120 [ice]\n[ 95.971843] ice_open_internal+0xb8/0x1f0 [ice]\n[ 95.971919] ice_ena_vsi+0x4f/0xd0 [ice]\n[ 95.971987] ice_dcb_ena_dis_vsi.constprop.5+0x29/0x90 [ice]\n[ 95.972082] ice_pf_dcb_cfg+0x29a/0x380 [ice]\n[ 95.972154] ice_dcbnl_setets+0x174/0x1b0 [ice]\n[ 95.972220] dcbnl_ieee_set+0x89/0x230\n[ 95.972279] ? dcbnl_ieee_del+0x150/0x150\n[ 95.972341] dcb_doit+0x124/0x1b0\n[ 95.972392] rtnetlink_rcv_msg+0x243/0x2f0\n[ 95.972457] ? dcb_doit+0x14d/0x1b0\n[ 95.972510] ? __kmalloc_node_track_caller+0x1d3/0x280\n[ 95.972591] ? rtnl_calcit.isra.31+0x100/0x100\n[ 95.972661] netlink_rcv_skb+0xcf/0xf0\n[ 95.972720] netlink_unicast+0x16d/0x220\n[ 95.972781] netlink_sendmsg+0x2ba/0x3a0\n[ 95.975891] sock_sendmsg+0x4c/0x50\n[ 95.979032] ___sys_sendmsg+0x2e4/0x300\n[ 95.982147] ? kmem_cache_alloc+0x13e/0x190\n[ 95.985242] ? __wake_up_common_lock+0x79/0x90\n[ 95.988338] ? __check_object_size+0xac/0x1b0\n[ 95.991440] ? _copy_to_user+0x22/0x30\n[ 95.994539] ? move_addr_to_user+0xbb/0xd0\n[ 95.997619] ? __sys_sendmsg+0x53/0x80\n[ 96.000664] __sys_sendmsg+0x53/0x80\n[ 96.003747] do_syscall_64+0x5b/0x1d0\n[ 96.006862] entry_SYSCALL_64_after_hwframe+0x65/0xca\n\nOnly update num_txq/rxq when passed check, and restore tc_cfg if setup\nqueue map failed."
}
]
},
"generator": {
"engine": "bippy-d175d3acf727"
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "n/a"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://git.kernel.org/stable/c/7c945e5b4787db47d728120b56c934ba05f99864",
"refsource": "MISC",
"url": "https://git.kernel.org/stable/c/7c945e5b4787db47d728120b56c934ba05f99864"
},
{
"name": "https://git.kernel.org/stable/c/a509702cac95a8b450228a037c8542f57e538e5b",
"refsource": "MISC",
"url": "https://git.kernel.org/stable/c/a509702cac95a8b450228a037c8542f57e538e5b"
}
]
}
},
"nvd.nist.gov": {
"cve": {
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nice: Fix crash by keep old cfg when update TCs more than queues\n\nThere are problems if allocated queues less than Traffic Classes.\n\nCommit a632b2a4c920 (\"ice: ethtool: Prohibit improper channel config\nfor DCB\") already disallow setting less queues than TCs.\n\nAnother case is if we first set less queues, and later update more TCs\nconfig due to LLDP, ice_vsi_cfg_tc() will failed but left dirty\nnum_txq/rxq and tc_cfg in vsi, that will cause invalid pointer access.\n\n[ 95.968089] ice 0000:3b:00.1: More TCs defined than queues/rings allocated.\n[ 95.968092] ice 0000:3b:00.1: Trying to use more Rx queues (8), than were allocated (1)!\n[ 95.968093] ice 0000:3b:00.1: Failed to config TC for VSI index: 0\n[ 95.969621] general protection fault: 0000 [#1] SMP NOPTI\n[ 95.969705] CPU: 1 PID: 58405 Comm: lldpad Kdump: loaded Tainted: G U W O --------- -t - 4.18.0 #1\n[ 95.969867] Hardware name: O.E.M/BC11SPSCB10, BIOS 8.23 12/30/2021\n[ 95.969992] RIP: 0010:devm_kmalloc+0xa/0x60\n[ 95.970052] Code: 5c ff ff ff 31 c0 5b 5d 41 5c c3 b8 f4 ff ff ff eb f4 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 89 d1 \u003c8b\u003e 97 60 02 00 00 48 8d 7e 18 48 39 f7 72 3f 55 89 ce 53 48 8b 4c\n[ 95.970344] RSP: 0018:ffffc9003f553888 EFLAGS: 00010206\n[ 95.970425] RAX: dead000000000200 RBX: ffffea003c425b00 RCX: 00000000006080c0\n[ 95.970536] RDX: 00000000006080c0 RSI: 0000000000000200 RDI: dead000000000200\n[ 95.970648] RBP: dead000000000200 R08: 00000000000463c0 R09: ffff888ffa900000\n[ 95.970760] R10: 0000000000000000 R11: 0000000000000002 R12: ffff888ff6b40100\n[ 95.970870] R13: ffff888ff6a55018 R14: 0000000000000000 R15: ffff888ff6a55460\n[ 95.970981] FS: 00007f51b7d24700(0000) GS:ffff88903ee80000(0000) knlGS:0000000000000000\n[ 95.971108] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 95.971197] CR2: 00007fac5410d710 CR3: 0000000f2c1de002 CR4: 00000000007606e0\n[ 95.971309] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[ 95.971419] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[ 95.971530] PKRU: 55555554\n[ 95.971573] Call Trace:\n[ 95.971622] ice_setup_rx_ring+0x39/0x110 [ice]\n[ 95.971695] ice_vsi_setup_rx_rings+0x54/0x90 [ice]\n[ 95.971774] ice_vsi_open+0x25/0x120 [ice]\n[ 95.971843] ice_open_internal+0xb8/0x1f0 [ice]\n[ 95.971919] ice_ena_vsi+0x4f/0xd0 [ice]\n[ 95.971987] ice_dcb_ena_dis_vsi.constprop.5+0x29/0x90 [ice]\n[ 95.972082] ice_pf_dcb_cfg+0x29a/0x380 [ice]\n[ 95.972154] ice_dcbnl_setets+0x174/0x1b0 [ice]\n[ 95.972220] dcbnl_ieee_set+0x89/0x230\n[ 95.972279] ? dcbnl_ieee_del+0x150/0x150\n[ 95.972341] dcb_doit+0x124/0x1b0\n[ 95.972392] rtnetlink_rcv_msg+0x243/0x2f0\n[ 95.972457] ? dcb_doit+0x14d/0x1b0\n[ 95.972510] ? __kmalloc_node_track_caller+0x1d3/0x280\n[ 95.972591] ? rtnl_calcit.isra.31+0x100/0x100\n[ 95.972661] netlink_rcv_skb+0xcf/0xf0\n[ 95.972720] netlink_unicast+0x16d/0x220\n[ 95.972781] netlink_sendmsg+0x2ba/0x3a0\n[ 95.975891] sock_sendmsg+0x4c/0x50\n[ 95.979032] ___sys_sendmsg+0x2e4/0x300\n[ 95.982147] ? kmem_cache_alloc+0x13e/0x190\n[ 95.985242] ? __wake_up_common_lock+0x79/0x90\n[ 95.988338] ? __check_object_size+0xac/0x1b0\n[ 95.991440] ? _copy_to_user+0x22/0x30\n[ 95.994539] ? move_addr_to_user+0xbb/0xd0\n[ 95.997619] ? __sys_sendmsg+0x53/0x80\n[ 96.000664] __sys_sendmsg+0x53/0x80\n[ 96.003747] do_syscall_64+0x5b/0x1d0\n[ 96.006862] entry_SYSCALL_64_after_hwframe+0x65/0xca\n\nOnly update num_txq/rxq when passed check, and restore tc_cfg if setup\nqueue map failed."
}
],
"id": "CVE-2022-48652",
"lastModified": "2024-04-28T13:15:07.477",
"metrics": {},
"published": "2024-04-28T13:15:07.477",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/7c945e5b4787db47d728120b56c934ba05f99864"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/a509702cac95a8b450228a037c8542f57e538e5b"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Received"
}
}
}
}
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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
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- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
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