{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-68263 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-68263 is a high-severity use after free vulnerability in Linux, published on 10 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-68263 and fix it if it is affected.\n\nWhat it is: CVE-2026-68263 is a high-severity use after free vulnerability in Linux, published on 10 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-68263 in the wild and no public exploit code.\n\nAffected product: Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-68263/ (Markdown: https://insights.sbomify.com/CVE-2026-68263/index.md)","id":"CVE-2026-68263","markdown":"https://insights.sbomify.com/CVE-2026-68263/index.md","name":"CVE-2026-68263","record":{"aliases":["BELL-CVE-2026-68263","DEBIAN-CVE-2026-68263","GHSA-x35m-7ch7-75hq","UBUNTU-CVE-2026-68263"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["code_execution","privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel driver","requires_auth":"low_privilege","summary":"A double free in the Imagination DRM driver causes a use-after-free, allowing local attackers to execute code or escalate privileges.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":7.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[],"description":"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 ]---","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"drm/imagination: Fix double call to drm_sched_entity_fini()","id":"CVE-2026-68263","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"use_after_free","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"drm/xe/pt: Reset current_op in xe_pt_update_ops_init()","id":"CVE-2026-68264"},"packages":[],"prev":{"headline":"drm/imagination: Fix user array stride in pvr_set_uobj_array()","id":"CVE-2026-68262"},"products":["Linux"],"published":"2026-08-10","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-08-17","vendors":["Linux"]},"summary":"A double free in the Imagination DRM driver causes a use-after-free, allowing local attackers to execute code or escalate privileges.","url":"https://insights.sbomify.com/CVE-2026-68263/"}