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        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.",
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        "full_product_name": {
          "name": "linux-headers-4.19.0-28-amd64-0:4.19.325-1+tuxcare.els1.amd64 as a component of Debian 10",
          "product_id": "Debian-10:linux-headers-4.19.0-28-amd64-0:4.19.325-1+tuxcare.els1.amd64"
        },
        "product_reference": "linux-headers-4.19.0-28-amd64-0:4.19.325-1+tuxcare.els1.amd64",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "hyperv-daemons-0:4.19.325-1+tuxcare.els1.amd64 as a component of Debian 10",
          "product_id": "Debian-10:hyperv-daemons-0:4.19.325-1+tuxcare.els1.amd64"
        },
        "product_reference": "hyperv-daemons-0:4.19.325-1+tuxcare.els1.amd64",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "linux-image-4.19.0-28-amd64-unsigned-0:4.19.325-1+tuxcare.els1.amd64 as a component of Debian 10",
          "product_id": "Debian-10:linux-image-4.19.0-28-amd64-unsigned-0:4.19.325-1+tuxcare.els1.amd64"
        },
        "product_reference": "linux-image-4.19.0-28-amd64-unsigned-0:4.19.325-1+tuxcare.els1.amd64",
        "relates_to_product_reference": "Debian-10"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-68263",
      "notes": [
        {
          "category": "description",
          "text": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/imagination: Fix double call to drm_sched_entity_fini()\n\nCall sequence of double call:\npvr_context_destroy\n  pvr_context_kill_queues\n    pvr_queue_kill\n      drm_sched_entity_destroy\n        drm_sched_entity_fini // here\n  pvr_context_put\n    kref_put(..., pvr_context_release)\n      pvr_context_destroy_queues\n        pvr_queue_destroy\n          drm_sched_entity_fini // here\n\nCall to drm_sched_entity_destroy() from pvr_context_kill_queues() calls\ndrm_sched_entity_flush() + drm_sched_entity_fini().\ndrm_sched_entity_flush() ensures all pending jobs are completed and\ndrm_sched_entity_fini() ensures no further submission is allowed as\nper expectation from pvr_context_kill_queues(). Double call to\ndrm_sched_entity_fini() is misuse of the API so keep call only in\npvr_context_create() failure path.\n\nStack trace for issue with addition of refcounting for DRM entity\nstats in commit fd177135f0e6 (\"drm/sched: Account entity GPU time\"):\n\n[  789.490527] ------------[ cut here ]------------\n[  789.490559] refcount_t: underflow; use-after-free.\n[  789.490657] WARNING: lib/refcount.c:28 at refcount_warn_saturate+0xf4/0x144, CPU#0: kworker/u16:1/440\n[  789.490695] Modules linked in: powervr drm_gpuvm drm_exec gpu_sched drm_shmem_helper xhci_plat_hcd xhci_hcd dwc3 usbcore usb_common snd_soc_simple_card snd_soc_simple_card_utils sa2ul sha512 sha256 dwc3_am62 sha1 authenc rti_wdt libsha512 at24 sch_fq_codel fuse dm_mod ipv6\n[  789.490798] CPU: 0 UID: 0 PID: 440 Comm: kworker/u16:1 Not tainted 7.0.0-rc7-02049-g5e2c0700091b #22 PREEMPT\n[  789.490809] Hardware name: Texas Instruments AM625 SK (DT)\n[  789.490815] Workqueue: powervr-sched pvr_queue_fence_release_work [powervr]\n[  789.490868] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n[  789.490876] pc : refcount_warn_saturate+0xf4/0x144\n[  789.490884] lr : refcount_warn_saturate+0xf4/0x144\n[  789.490892] sp : ffff8000822cbcc0\n[  789.490895] x29: ffff8000822cbcc0 x28: 0000000000000000 x27: 0000000000000000\n[  789.490909] x26: 0000000000000000 x25: ffff800081b1e338 x24: ffff000004541405\n[  789.490922] x23: ffff000004bea950 x22: ffff00000042e400 x21: ffff000007123e30\n[  789.490935] x20: ffff000007123000 x19: ffff000007a80d50 x18: fffffffffffe7768\n[  789.490948] x17: 74736574202c6e6f x16: 697461746e656d65 x15: ffff800081b269f0\n[  789.490962] x14: 0000000000000030 x13: ffff800081b26a70 x12: 0000000000000211\n[  789.490975] x11: 00000000000000c0 x10: 0000000000000b50 x9 : ffff8000822cbb30\n[  789.490988] x8 : ffff0000014e7bb0 x7 : ffff00007725e780 x6 : 0000000372a05f49\n[  789.491001] x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000010\n[  789.491013] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff0000014e7000\n[  789.491027] Call trace:\n[  789.491032]  refcount_warn_saturate+0xf4/0x144 (P)\n[  789.491043]  drm_sched_entity_fini+0x164/0x18c [gpu_sched]\n[  789.491081]  pvr_queue_destroy+0x64/0x134 [powervr]\n[  789.491110]  pvr_context_destroy_queues+0x34/0x64 [powervr]\n[  789.491138]  pvr_context_release+0x70/0xac [powervr]\n[  789.491166]  pvr_context_put.part.0+0x5c/0x7c [powervr]\n[  789.491193]  pvr_context_put+0x14/0x24 [powervr]\n[  789.491221]  pvr_queue_fence_release_work+0x20/0x38 [powervr]\n[  789.491249]  process_one_work+0x160/0x4c4\n[  789.491264]  worker_thread+0x188/0x310\n[  789.491276]  kthread+0x130/0x13c\n[  789.491287]  ret_from_fork+0x10/0x20\n[  789.491300] ---[ end trace 0000000000000000 ]---",
          "title": "Vulnerability description"
        },
        {
          "category": "other",
          "text": "TuxCare has assessed that this vulnerability does not impact any currently supported TuxCare products. This evaluation may change as new information becomes available. For additional details regarding this vulnerability and affected products, refer to the provided references.",
          "title": "Statement"
        }
      ],
      "product_status": {
        "known_not_affected": [
          "Debian-10:hyperv-daemons-0:4.19.325-1+tuxcare.els1.amd64",
          "Debian-10:libbpf-dev-0:4.19.325-1+tuxcare.els1.amd64",
          "Debian-10:libbpf4.19-0:4.19.325-1+tuxcare.els1.amd64",
          "Debian-10:libcpupower-dev-0:4.19.325-1+tuxcare.els1.amd64",
          "Debian-10:libcpupower1-0:4.19.325-1+tuxcare.els1.amd64",
          "Debian-10:linux-compiler-gcc-8-x86-0:4.19.325-1+tuxcare.els1.amd64",
          "Debian-10:linux-config-4.19-0:4.19.325-1+tuxcare.els1.amd64",
          "Debian-10:linux-cpupower-0:4.19.325-1+tuxcare.els1.amd64",
          "Debian-10:linux-doc-4.19-0:4.19.325-1+tuxcare.els1.all",
          "Debian-10:linux-headers-4.19.0-28-all-0:4.19.325-1+tuxcare.els1.amd64",
          "Debian-10:linux-headers-4.19.0-28-all-amd64-0:4.19.325-1+tuxcare.els1.amd64",
          "Debian-10:linux-headers-4.19.0-28-amd64-0:4.19.325-1+tuxcare.els1.amd64",
          "Debian-10:linux-headers-4.19.0-28-common-0:4.19.325-1+tuxcare.els1.all",
          "Debian-10:linux-image-4.19.0-28-amd64-unsigned-0:4.19.325-1+tuxcare.els1.amd64",
          "Debian-10:linux-image-amd64-signed-template-0:4.19.325-1+tuxcare.els1.amd64",
          "Debian-10:linux-kbuild-4.19-0:4.19.325-1+tuxcare.els1.amd64",
          "Debian-10:linux-libc-dev-0:4.19.325-1+tuxcare.els1.amd64",
          "Debian-10:linux-perf-4.19-0:4.19.325-1+tuxcare.els1.amd64",
          "Debian-10:linux-source-4.19-0:4.19.325-1+tuxcare.els1.all",
          "Debian-10:linux-support-4.19.0-28-0:4.19.325-1+tuxcare.els1.all"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-68263"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/stable/c/4af24c27a39ba147a613a09e10b9e0f7294524c0",
          "url": "https://git.kernel.org/stable/c/4af24c27a39ba147a613a09e10b9e0f7294524c0"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/stable/c/9be3f4bd6f514f69c51a8c77ea64fce2729dc7f4",
          "url": "https://git.kernel.org/stable/c/9be3f4bd6f514f69c51a8c77ea64fce2729dc7f4"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/stable/c/c1136d907fd04ca5c62ba11c1159b5fe65a1760c",
          "url": "https://git.kernel.org/stable/c/c1136d907fd04ca5c62ba11c1159b5fe65a1760c"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/stable/c/c88fdbf3da26e0179629530cae7768cd3d4ead85",
          "url": "https://git.kernel.org/stable/c/c88fdbf3da26e0179629530cae7768cd3d4ead85"
        }
      ],
      "release_date": "2026-08-10T13:20:00Z",
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        },
        {
          "category": "impact",
          "date": "2026-08-22T12:53:37.402061Z",
          "details": "debian10els is not affected by CVE-2026-68263. The PowerVR (imagination) GPU job submission and scheduling code that carries the vulnerability was added upstream long after the v4.19 base of the debian10els kernel, so the driver is not present in this tree.",
          "product_ids": [
            "Debian-10:hyperv-daemons-0:4.19.325-1+tuxcare.els1.amd64",
            "Debian-10:libbpf-dev-0:4.19.325-1+tuxcare.els1.amd64",
            "Debian-10:libbpf4.19-0:4.19.325-1+tuxcare.els1.amd64",
            "Debian-10:libcpupower-dev-0:4.19.325-1+tuxcare.els1.amd64",
            "Debian-10:libcpupower1-0:4.19.325-1+tuxcare.els1.amd64",
            "Debian-10:linux-compiler-gcc-8-x86-0:4.19.325-1+tuxcare.els1.amd64",
            "Debian-10:linux-config-4.19-0:4.19.325-1+tuxcare.els1.amd64",
            "Debian-10:linux-cpupower-0:4.19.325-1+tuxcare.els1.amd64",
            "Debian-10:linux-doc-4.19-0:4.19.325-1+tuxcare.els1.all",
            "Debian-10:linux-headers-4.19.0-28-all-0:4.19.325-1+tuxcare.els1.amd64",
            "Debian-10:linux-headers-4.19.0-28-all-amd64-0:4.19.325-1+tuxcare.els1.amd64",
            "Debian-10:linux-headers-4.19.0-28-amd64-0:4.19.325-1+tuxcare.els1.amd64",
            "Debian-10:linux-headers-4.19.0-28-common-0:4.19.325-1+tuxcare.els1.all",
            "Debian-10:linux-image-4.19.0-28-amd64-unsigned-0:4.19.325-1+tuxcare.els1.amd64",
            "Debian-10:linux-image-amd64-signed-template-0:4.19.325-1+tuxcare.els1.amd64",
            "Debian-10:linux-kbuild-4.19-0:4.19.325-1+tuxcare.els1.amd64",
            "Debian-10:linux-libc-dev-0:4.19.325-1+tuxcare.els1.amd64",
            "Debian-10:linux-perf-4.19-0:4.19.325-1+tuxcare.els1.amd64",
            "Debian-10:linux-source-4.19-0:4.19.325-1+tuxcare.els1.all",
            "Debian-10:linux-support-4.19.0-28-0:4.19.325-1+tuxcare.els1.all"
          ]
        }
      ]
    }
  ]
}