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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxen/gntdev: Prevent leaking grants\n\nPrior to this commit, if a grant mapping operation failed partially,\nsome of the entries in the map_ops array would be invalid, whereas all\nof the entries in the kmap_ops array would be valid. This in turn would\ncause the following logic in gntdev_map_grant_pages to become invalid:\n\n  for (i = 0; i \u003c map-\u003ecount; i++) {\n    if (map-\u003emap_ops[i].status == GNTST_okay) {\n      map-\u003eunmap_ops[i].handle = map-\u003emap_ops[i].handle;\n      if (!use_ptemod)\n        alloced++;\n    }\n    if (use_ptemod) {\n      if (map-\u003ekmap_ops[i].status == GNTST_okay) {\n        if (map-\u003emap_ops[i].status == GNTST_okay)\n          alloced++;\n        map-\u003ekunmap_ops[i].handle = map-\u003ekmap_ops[i].handle;\n      }\n    }\n  }\n  ...\n  atomic_add(alloced, \u0026map-\u003elive_grants);\n\nAssume that use_ptemod is true (i.e., the domain mapping the granted\npages is a paravirtualized domain). In the code excerpt above, note that\nthe \"alloced\" variable is only incremented when both kmap_ops[i].status\nand map_ops[i].status are set to GNTST_okay (i.e., both mapping\noperations are successful).  However, as also noted above, there are\ncases where a grant mapping operation fails partially, breaking the\nassumption of the code excerpt above.\n\nThe aforementioned causes map-\u003elive_grants to be incorrectly set. In\nsome cases, all of the map_ops mappings fail, but all of the kmap_ops\nmappings succeed, meaning that live_grants may remain zero. This in turn\nmakes it impossible to unmap the successfully grant-mapped pages pointed\nto by kmap_ops, because unmap_grant_pages has the following snippet of\ncode at its beginning:\n\n  if (atomic_read(\u0026map-\u003elive_grants) == 0)\n    return; /* Nothing to do */\n\nIn other cases where only some of the map_ops mappings fail but all\nkmap_ops mappings succeed, live_grants is made positive, but when the\nuser requests unmapping the grant-mapped pages, __unmap_grant_pages_done\nwill then make map-\u003elive_grants negative, because the latter function\ndoes not check if all of the pages that were requested to be unmapped\nwere actually unmapped, and the same function unconditionally subtracts\n\"data-\u003ecount\" (i.e., a value that can be greater than map-\u003elive_grants)\nfrom map-\u003elive_grants. The side effects of a negative live_grants value\nhave not been studied.\n\nThe net effect of all of this is that grant references are leaked in one\nof the above conditions. In Qubes OS v4.1 (which uses Xen\u0027s grant\nmechanism extensively for X11 GUI isolation), this issue manifests\nitself with warning messages like the following to be printed out by the\nLinux kernel in the VM that had granted pages (that contain X11 GUI\nwindow data) to dom0: \"g.e. 0x1234 still pending\", especially after the\nuser rapidly resizes GUI VM windows (causing some grant-mapping\noperations to partially or completely fail, due to the fact that the VM\nunshares some of the pages as part of the window resizing, making the\npages impossible to grant-map from dom0).\n\nThe fix for this issue involves counting all successful map_ops and\nkmap_ops mappings separately, and then adding the sum to live_grants.\nDuring unmapping, only the number of successfully unmapped grants is\nsubtracted from live_grants. The code is also modified to check for\nnegative live_grants values after the subtraction and warn the user."
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnull_blk: fix poll request timeout handling\n\nWhen doing io_uring benchmark on /dev/nullb0, it\u0027s easy to crash the\nkernel if poll requests timeout triggered, as reported by David. [1]\n\nBUG: kernel NULL pointer dereference, address: 0000000000000008\nWorkqueue: kblockd blk_mq_timeout_work\nRIP: 0010:null_timeout_rq+0x4e/0x91\nCall Trace:\n ? null_timeout_rq+0x4e/0x91\n blk_mq_handle_expired+0x31/0x4b\n bt_iter+0x68/0x84\n ? bt_tags_iter+0x81/0x81\n __sbitmap_for_each_set.constprop.0+0xb0/0xf2\n ? __blk_mq_complete_request_remote+0xf/0xf\n bt_for_each+0x46/0x64\n ? __blk_mq_complete_request_remote+0xf/0xf\n ? percpu_ref_get_many+0xc/0x2a\n blk_mq_queue_tag_busy_iter+0x14d/0x18e\n blk_mq_timeout_work+0x95/0x127\n process_one_work+0x185/0x263\n worker_thread+0x1b5/0x227\n\nThis is indeed a race problem between null_timeout_rq() and null_poll().\n\nnull_poll()\t\t\t\tnull_timeout_rq()\n  spin_lock(\u0026nq-\u003epoll_lock)\n  list_splice_init(\u0026nq-\u003epoll_list, \u0026list)\n  spin_unlock(\u0026nq-\u003epoll_lock)\n\n  while (!list_empty(\u0026list))\n    req = list_first_entry()\n    list_del_init()\n    ...\n    blk_mq_add_to_batch()\n    // req-\u003erq_next = NULL\n\t\t\t\t\tspin_lock(\u0026nq-\u003epoll_lock)\n\n\t\t\t\t\t// rq-\u003equeuelist-\u003enext == NULL\n\t\t\t\t\tlist_del_init(\u0026rq-\u003equeuelist)\n\n\t\t\t\t\tspin_unlock(\u0026nq-\u003epoll_lock)\n\nFix these problems by setting requests state to MQ_RQ_COMPLETE under\nnq-\u003epoll_lock protection, in which null_timeout_rq() can safely detect\nthis race and early return.\n\nNote this patch just fix the kernel panic when request timeout happen.\n\n[1] https://lore.kernel.org/all/3893581.1691785261@warthog.procyon.org.uk/"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbnxt_en: Set DMA unmap len correctly for XDP_REDIRECT\n\nWhen transmitting an XDP_REDIRECT packet, call dma_unmap_len_set()\nwith the proper length instead of 0.  This bug triggers this warning\non a system with IOMMU enabled:\n\nWARNING: CPU: 36 PID: 0 at drivers/iommu/dma-iommu.c:842 __iommu_dma_unmap+0x159/0x170\nRIP: 0010:__iommu_dma_unmap+0x159/0x170\nCode: a8 00 00 00 00 48 c7 45 b0 00 00 00 00 48 c7 45 c8 00 00 00 00 48 c7 45 a0 ff ff ff ff 4c 89 45\nb8 4c 89 45 c0 e9 77 ff ff ff \u003c0f\u003e 0b e9 60 ff ff ff e8 8b bf 6a 00 66 66 2e 0f 1f 84 00 00 00 00\nRSP: 0018:ff22d31181150c88 EFLAGS: 00010206\nRAX: 0000000000002000 RBX: 00000000e13a0000 RCX: 0000000000000000\nRDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000\nRBP: ff22d31181150cf0 R08: ff22d31181150ca8 R09: 0000000000000000\nR10: 0000000000000000 R11: ff22d311d36c9d80 R12: 0000000000001000\nR13: ff13544d10645010 R14: ff22d31181150c90 R15: ff13544d0b2bac00\nFS: 0000000000000000(0000) GS:ff13550908a00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00005be909dacff8 CR3: 0008000173408003 CR4: 0000000000f71ef0\nPKRU: 55555554\nCall Trace:\n\u003cIRQ\u003e\n? show_regs+0x6d/0x80\n? __warn+0x89/0x160\n? __iommu_dma_unmap+0x159/0x170\n? report_bug+0x17e/0x1b0\n? handle_bug+0x46/0x90\n? exc_invalid_op+0x18/0x80\n? asm_exc_invalid_op+0x1b/0x20\n? __iommu_dma_unmap+0x159/0x170\n? __iommu_dma_unmap+0xb3/0x170\niommu_dma_unmap_page+0x4f/0x100\ndma_unmap_page_attrs+0x52/0x220\n? srso_alias_return_thunk+0x5/0xfbef5\n? xdp_return_frame+0x2e/0xd0\nbnxt_tx_int_xdp+0xdf/0x440 [bnxt_en]\n__bnxt_poll_work_done+0x81/0x1e0 [bnxt_en]\nbnxt_poll+0xd3/0x1e0 [bnxt_en]"
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        },
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          "url": "https://git.kernel.org/stable/c/8d672a1a6bfc81fef9151925c9c0481f4acf4bec"
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          "url": "https://git.kernel.org/stable/c/f9eaf6d036075dc820520e1194692c0619b7297b"
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          "url": "https://git.kernel.org/stable/c/5909679a82cd74cf0343d9e3ddf4b6931aa7e613"
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        },
        {
          "url": "https://git.kernel.org/stable/c/3cdf199d4755d477972ee87110b2aebc88b3cfad"
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      ],
      "title": "bnxt_en: Set DMA unmap len correctly for XDP_REDIRECT",
      "x_generator": {
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      }
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  "cveMetadata": {
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    "assignerShortName": "Linux",
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    "datePublished": "2025-07-25T15:27:18.640Z",
    "dateReserved": "2025-04-16T04:51:24.016Z",
    "dateUpdated": "2025-11-03T17:38:02.718Z",
    "state": "PUBLISHED"
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: Add missing lock in cfg80211_check_and_end_cac()\n\nCallers of wdev_chandef() must hold the wiphy mutex.\n\nBut the worker cfg80211_propagate_cac_done_wk() never takes the lock.\nWhich triggers the warning below with the mesh_peer_connected_dfs\ntest from hostapd and not (yet) released mac80211 code changes:\n\nWARNING: CPU: 0 PID: 495 at net/wireless/chan.c:1552 wdev_chandef+0x60/0x165\nModules linked in:\nCPU: 0 UID: 0 PID: 495 Comm: kworker/u4:2 Not tainted 6.14.0-rc5-wt-g03960e6f9d47 #33 13c287eeabfe1efea01c0bcc863723ab082e17cf\nWorkqueue: cfg80211 cfg80211_propagate_cac_done_wk\nStack:\n 00000000 00000001 ffffff00 6093267c\n 00000000 6002ec30 6d577c50 60037608\n 00000000 67e8d108 6063717b 00000000\nCall Trace:\n [\u003c6002ec30\u003e] ? _printk+0x0/0x98\n [\u003c6003c2b3\u003e] show_stack+0x10e/0x11a\n [\u003c6002ec30\u003e] ? _printk+0x0/0x98\n [\u003c60037608\u003e] dump_stack_lvl+0x71/0xb8\n [\u003c6063717b\u003e] ? wdev_chandef+0x60/0x165\n [\u003c6003766d\u003e] dump_stack+0x1e/0x20\n [\u003c6005d1b7\u003e] __warn+0x101/0x20f\n [\u003c6005d3a8\u003e] warn_slowpath_fmt+0xe3/0x15d\n [\u003c600b0c5c\u003e] ? mark_lock.part.0+0x0/0x4ec\n [\u003c60751191\u003e] ? __this_cpu_preempt_check+0x0/0x16\n [\u003c600b11a2\u003e] ? mark_held_locks+0x5a/0x6e\n [\u003c6005d2c5\u003e] ? warn_slowpath_fmt+0x0/0x15d\n [\u003c60052e53\u003e] ? unblock_signals+0x3a/0xe7\n [\u003c60052f2d\u003e] ? um_set_signals+0x2d/0x43\n [\u003c60751191\u003e] ? __this_cpu_preempt_check+0x0/0x16\n [\u003c607508b2\u003e] ? lock_is_held_type+0x207/0x21f\n [\u003c6063717b\u003e] wdev_chandef+0x60/0x165\n [\u003c605f89b4\u003e] regulatory_propagate_dfs_state+0x247/0x43f\n [\u003c60052f00\u003e] ? um_set_signals+0x0/0x43\n [\u003c605e6bfd\u003e] cfg80211_propagate_cac_done_wk+0x3a/0x4a\n [\u003c6007e460\u003e] process_scheduled_works+0x3bc/0x60e\n [\u003c6007d0ec\u003e] ? move_linked_works+0x4d/0x81\n [\u003c6007d120\u003e] ? assign_work+0x0/0xaa\n [\u003c6007f81f\u003e] worker_thread+0x220/0x2dc\n [\u003c600786ef\u003e] ? set_pf_worker+0x0/0x57\n [\u003c60087c96\u003e] ? to_kthread+0x0/0x43\n [\u003c6008ab3c\u003e] kthread+0x2d3/0x2e2\n [\u003c6007f5ff\u003e] ? worker_thread+0x0/0x2dc\n [\u003c6006c05b\u003e] ? calculate_sigpending+0x0/0x56\n [\u003c6003b37d\u003e] new_thread_handler+0x4a/0x64\nirq event stamp: 614611\nhardirqs last  enabled at (614621): [\u003c00000000600bc96b\u003e] __up_console_sem+0x82/0xaf\nhardirqs last disabled at (614630): [\u003c00000000600bc92c\u003e] __up_console_sem+0x43/0xaf\nsoftirqs last  enabled at (614268): [\u003c00000000606c55c6\u003e] __ieee80211_wake_queue+0x933/0x985\nsoftirqs last disabled at (614266): [\u003c00000000606c52d6\u003e] __ieee80211_wake_queue+0x643/0x985"
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/b3d24038eb775f2f7a1dfef58d8e1dc444a12820"
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        {
          "url": "https://git.kernel.org/stable/c/4a63523d3541eef4cf504a9682e6fbe94ffe79a6"
        },
        {
          "url": "https://git.kernel.org/stable/c/7022df2248c08c6f75a01714163ac902333bf3db"
        },
        {
          "url": "https://git.kernel.org/stable/c/dbce810607726408f889d3358f4780fd1436861e"
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        {
          "url": "https://git.kernel.org/stable/c/2c5dee15239f3f3e31aa5c8808f18996c039e2c1"
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      ],
      "title": "wifi: cfg80211: Add missing lock in cfg80211_check_and_end_cac()",
      "x_generator": {
        "engine": "bippy-1.2.0"
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            "url": "https://www.debian.org/security/2023/dsa-5492"
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    "cna": {
      "affected": [
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          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:enterprise_linux:8::realtime",
            "cpe:/a:redhat:enterprise_linux:8::nfv"
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          "defaultStatus": "affected",
          "packageName": "kernel-rt",
          "product": "Red Hat Enterprise Linux 8",
          "vendor": "Red Hat",
          "versions": [
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              "lessThan": "*",
              "status": "unaffected",
              "version": "0:4.18.0-513.5.1.rt7.307.el8_9",
              "versionType": "rpm"
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          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
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            "cpe:/a:redhat:enterprise_linux:8::crb"
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          "defaultStatus": "affected",
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvxlan: Fix NPD in {arp,neigh}_reduce() when using nexthop objects\n\nWhen the \"proxy\" option is enabled on a VXLAN device, the device will\nsuppress ARP requests and IPv6 Neighbor Solicitation messages if it is\nable to reply on behalf of the remote host. That is, if a matching and\nvalid neighbor entry is configured on the VXLAN device whose MAC address\nis not behind the \"any\" remote (0.0.0.0 / ::).\n\nThe code currently assumes that the FDB entry for the neighbor\u0027s MAC\naddress points to a valid remote destination, but this is incorrect if\nthe entry is associated with an FDB nexthop group. This can result in a\nNPD [1][3] which can be reproduced using [2][4].\n\nFix by checking that the remote destination exists before dereferencing\nit.\n\n[1]\nBUG: kernel NULL pointer dereference, address: 0000000000000000\n[...]\nCPU: 4 UID: 0 PID: 365 Comm: arping Not tainted 6.17.0-rc2-virtme-g2a89cb21162c #2 PREEMPT(voluntary)\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.17.0-4.fc41 04/01/2014\nRIP: 0010:vxlan_xmit+0xb58/0x15f0\n[...]\nCall Trace:\n \u003cTASK\u003e\n dev_hard_start_xmit+0x5d/0x1c0\n __dev_queue_xmit+0x246/0xfd0\n packet_sendmsg+0x113a/0x1850\n __sock_sendmsg+0x38/0x70\n __sys_sendto+0x126/0x180\n __x64_sys_sendto+0x24/0x30\n do_syscall_64+0xa4/0x260\n entry_SYSCALL_64_after_hwframe+0x4b/0x53\n\n[2]\n #!/bin/bash\n\n ip address add 192.0.2.1/32 dev lo\n\n ip nexthop add id 1 via 192.0.2.2 fdb\n ip nexthop add id 10 group 1 fdb\n\n ip link add name vx0 up type vxlan id 10010 local 192.0.2.1 dstport 4789 proxy\n\n ip neigh add 192.0.2.3 lladdr 00:11:22:33:44:55 nud perm dev vx0\n\n bridge fdb add 00:11:22:33:44:55 dev vx0 self static nhid 10\n\n arping -b -c 1 -s 192.0.2.1 -I vx0 192.0.2.3\n\n[3]\nBUG: kernel NULL pointer dereference, address: 0000000000000000\n[...]\nCPU: 13 UID: 0 PID: 372 Comm: ndisc6 Not tainted 6.17.0-rc2-virtmne-g6ee90cb26014 #3 PREEMPT(voluntary)\nHardware name: QEMU Standard PC (i440FX + PIIX, 1v996), BIOS 1.17.0-4.fc41 04/01/2x014\nRIP: 0010:vxlan_xmit+0x803/0x1600\n[...]\nCall Trace:\n \u003cTASK\u003e\n dev_hard_start_xmit+0x5d/0x1c0\n __dev_queue_xmit+0x246/0xfd0\n ip6_finish_output2+0x210/0x6c0\n ip6_finish_output+0x1af/0x2b0\n ip6_mr_output+0x92/0x3e0\n ip6_send_skb+0x30/0x90\n rawv6_sendmsg+0xe6e/0x12e0\n __sock_sendmsg+0x38/0x70\n __sys_sendto+0x126/0x180\n __x64_sys_sendto+0x24/0x30\n do_syscall_64+0xa4/0x260\n entry_SYSCALL_64_after_hwframe+0x4b/0x53\nRIP: 0033:0x7f383422ec77\n\n[4]\n #!/bin/bash\n\n ip address add 2001:db8:1::1/128 dev lo\n\n ip nexthop add id 1 via 2001:db8:1::1 fdb\n ip nexthop add id 10 group 1 fdb\n\n ip link add name vx0 up type vxlan id 10010 local 2001:db8:1::1 dstport 4789 proxy\n\n ip neigh add 2001:db8:1::3 lladdr 00:11:22:33:44:55 nud perm dev vx0\n\n bridge fdb add 00:11:22:33:44:55 dev vx0 self static nhid 10\n\n ndisc6 -r 1 -s 2001:db8:1::1 -w 1 2001:db8:1::3 vx0"
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      "providerMetadata": {
        "dateUpdated": "2025-09-29T06:01:01.501Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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      "references": [
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          "url": "https://git.kernel.org/stable/c/e211e3f4199ac829bd493632efcd131d337cba9d"
        },
        {
          "url": "https://git.kernel.org/stable/c/8cfa0f076842f9b3b4eb52ae0e41d16e25cbf8fa"
        },
        {
          "url": "https://git.kernel.org/stable/c/1f5d2fd1ca04a23c18b1bde9a43ce2fa2ffa1bce"
        }
      ],
      "title": "vxlan: Fix NPD in {arp,neigh}_reduce() when using nexthop objects",
      "x_generator": {
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-39850",
    "datePublished": "2025-09-19T15:26:22.803Z",
    "dateReserved": "2025-04-16T07:20:57.142Z",
    "dateUpdated": "2025-09-29T06:01:01.501Z",
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        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
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        ],
        "title": "CVE Program Container"
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    ],
    "cna": {
      "affected": [
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          "programFiles": [
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          "vendor": "Linux",
          "versions": [
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            },
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          "nodes": [
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                  "versionEndExcluding": "5.15.190",
                  "versionStartIncluding": "5.12",
                  "vulnerable": true
                },
                {
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                {
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nclk: xilinx: vcu: unregister pll_post only if registered correctly\n\nIf registration of pll_post is failed, it will be set to NULL or ERR,\nunregistering same will fail with following call trace:\n\nUnable to handle kernel NULL pointer dereference at virtual address 008\npc : clk_hw_unregister+0xc/0x20\nlr : clk_hw_unregister_fixed_factor+0x18/0x30\nsp : ffff800011923850\n...\nCall trace:\n clk_hw_unregister+0xc/0x20\n clk_hw_unregister_fixed_factor+0x18/0x30\n xvcu_unregister_clock_provider+0xcc/0xf4 [xlnx_vcu]\n xvcu_probe+0x2bc/0x53c [xlnx_vcu]"
        }
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          "url": "https://git.kernel.org/stable/c/f1a1be99d5ae53d3b404415f1665eb59e8e02a8c"
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        },
        {
          "url": "https://git.kernel.org/stable/c/3b0abc443ac22f7d4f61ddbbbbc5dbb06c87139d"
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      "title": "clk: xilinx: vcu: unregister pll_post only if registered correctly",
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    "cveId": "CVE-2025-38583",
    "datePublished": "2025-08-19T17:03:05.340Z",
    "dateReserved": "2025-04-16T04:51:24.026Z",
    "dateUpdated": "2025-11-03T17:40:11.610Z",
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