{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-68305 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-68305 is a high-severity 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-2026-68305 and fix it if it is affected.\n\nWhat it is: CVE-2026-68305 is a high-severity 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-2026-68305 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-2026-68305/ (Markdown: https://insights.sbomify.com/CVE-2026-68305/index.md)","id":"CVE-2026-68305","markdown":"https://insights.sbomify.com/CVE-2026-68305/index.md","name":"CVE-2026-68305","record":{"aliases":["BELL-CVE-2026-68305","DEBIAN-CVE-2026-68305","GHSA-qfm9-4w8r-pq56","UBUNTU-CVE-2026-68305"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel driver","requires_auth":"low_privilege","summary":"A local attacker can trigger a kernel crash by destroying buffer objects after device unbinding, causing a NULL pointer dereference in the Xe GPU driver.","user_interaction":"not_required","vuln_class":"null_dereference"},"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":[{"id":"CWE-476","name":"NULL Pointer Dereference"}],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/vf: Add drm_dev guards when detaching CCS read/write buffers\n\nCCS read/write buffers are freed during BO destruction. In some cases,\nBOs may be destroyed after the device is unbound but while the DRM\nstructure remains valid, leading to NULL pointer dereferences when\naccessing device resources.\n\nBUG: kernel NULL pointer dereference, address: 0000000000000000\nPGD 0 P4D 0\nOops: Oops: 0000 [#1] SMP NOPTI\nCPU: 0 UID: 0 PID: 9376 Comm: xe_pat Not tainted 7.2.0-rc2+ #1 PREEMPT(lazy)\nRIP: 0010:xe_sriov_vf_ccs_rw_update_bb_addr+0x4d/0xa0 [xe]\nRSP: 0018:ffffcf304110b9c8 EFLAGS: 00010246\nRAX: ffff8a85c38a0a00 RBX: 00000000810ef000 RCX: 0000000000000000\nRDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8a85c39c1888\nRBP: ffffcf304110b9e8 R08: 0000000000000000 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000000 R12: ffff8a85c39c1888\nR13: 0000000000000000 R14: ffff8a85c39b4f28 R15: ffff8a85c3885000\nFS:  0000000000000000(0000) GS:ffff8a878b809000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000000000000000 CR3: 000000010314a002 CR4: 0000000000772ef0\nPKRU: 55555554\nCall Trace:\n \u003cTASK\u003e\n xe_migrate_ccs_rw_copy_clear+0x98/0x120 [xe]\n xe_sriov_vf_ccs_detach_bo+0x2c/0x60 [xe]\n xe_ttm_bo_delete_mem_notify+0xc8/0xe0 [xe]\n ttm_bo_cleanup_memtype_use+0x26/0x80 [ttm]\n ttm_bo_release+0x29e/0x2d0 [ttm]\n ttm_bo_fini+0x39/0x70 [ttm]\n xe_gem_object_free+0x1f/0x30 [xe]\n drm_gem_object_free+0x1d/0x40\n ttm_bo_vm_close+0x5f/0x90 [ttm]\n remove_vma+0x2c/0x70\n tear_down_vmas+0x63/0xf0\n exit_mmap+0x20d/0x3f0\n __mmput+0x45/0x170\n mmput+0x31/0x40\n do_exit+0x2ba/0xac0\n do_group_exit+0x2d/0xb0\n __x64_sys_exit_group+0x18/0x20\n x64_sys_call+0x14a0/0x2390\n do_syscall_64+0xdd/0x640\n ? count_memcg_events+0xea/0x240\n ? handle_mm_fault+0x1ec/0x2f0\n\n(cherry picked from commit 1ae415a6eefe5004954a1d352b1718faca8844ef)","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/xe/vf: Add drm_dev guards when detaching CCS read/write buffers","id":"CVE-2026-68305","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"null_dereference","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"wifi: mt76: mt7996: fix possible NULL-pointer deref in mt7996_mcu_sta_bfer_eht()","id":"CVE-2026-68306"},"packages":[],"prev":{"headline":"wifi: brcmfmac: fix 802.1X-SHA256 call trace warning","id":"CVE-2026-68304"},"products":["Linux"],"published":"2026-08-10","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-19","vendors":["Linux"]},"summary":"A local attacker can trigger a kernel crash by destroying buffer objects after device unbinding, causing a NULL pointer dereference in the Xe GPU driver.","url":"https://insights.sbomify.com/CVE-2026-68305/"}