CVE-2026-63884

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-19. the CNA's CVSS baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
Trending — 4 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

drm/i915: Fix potential UAF in TTM object purge

TLDR: The bo->ttm object might be changed by calling ttm_bo_validate(), move casting it to an i915_tt object later to actually get the right pointer.

A user reported hitting the following bug under heavy use on DG2:

[26620.095550] Oops: general protection fault, probably for non-canonical address 0xa56b6b6b6b6b6b8b: 0000 1 SMP NOPTI [26620.095556] CPU: 2 UID: 0 PID: 631 Comm: Xorg Not tainted 6.18.8 #1 PREEMPT(lazy) [26620.095558] Hardware name: ASRock B850M Steel Legend WiFi/B850M Steel Legend WiFi, BIOS 3.50 09/18/2025 [26620.095559] RIP: 0010:i915_ttm_purge+0x84/0x100 [i915] [26620.095604] Code: 00 00 00 48 8d 54 24 10 48 89 e6 48 89 fb e8 83 aa ae ff 85 c0 75 6f 48 83 bb a8 01 00 00 00 74 2c 48 8b 45 78 48 85 c0 74 23 <48> 8b 78 20 48 c7 c2 ff ff ff ff 31 f6 e8 7a 73 e3 e0 48 8b 7d 78 [26620.095605] RSP: 0018:ffffc90005fd7430 EFLAGS: 00010282 [26620.095607] RAX: a56b6b6b6b6b6b6b RBX: ffff8881f46c3dc0 RCX: 0000000000000000 [26620.095608] RDX: 0000000000000000 RSI: 0000000000000246 RDI: 00000000ffffffff [26620.095609] RBP: ffff888289610f00 R08: 0000000000000001 R09: ffff88823b022000 [26620.095609] R10: ffff888103029b28 R11: ffff8881fc7f3800 R12: ffff88810b6150d0 [26620.095609] R13: ffff888289610f00 R14: 0000000000000000 R15: ffff8881f46c3dc0 [26620.095610] FS: 00007f1004d86900(0000) GS:ffff88901c858000(0000) knlGS:0000000000000000 [26620.095611] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [26620.095611] CR2: 00007f0fdf489000 CR3: 000000035b0c1000 CR4: 0000000000750ef0 [26620.095612] PKRU: 55555554 [26620.095612] Call Trace: [26620.095615] [26620.095615] i915_ttm_move+0x2b9/0x420 [i915] [26620.095642] ? ttm_tt_init+0x65/0x80 [ttm] [26620.095644] ? i915_ttm_tt_create+0xc6/0x150 [i915] [26620.095667] ttm_bo_handle_move_mem+0xb6/0x160 [ttm] [26620.095669] ttm_bo_evict+0x100/0x150 [ttm] [26620.095671] ? preempt_count_add+0x64/0xa0 [26620.095673] ? _raw_spin_lock+0xe/0x30 [26620.095675] ? _raw_spin_unlock+0xd/0x30 [26620.095675] ? i915_gem_object_evictable+0xb7/0xd0 [i915] [26620.095704] ttm_bo_evict_cb+0x6e/0xd0 [ttm] [26620.095705] ttm_lru_walk_for_evict+0xa6/0x200 [ttm] [26620.095708] ttm_bo_alloc_resource+0x185/0x4f0 [ttm] [26620.095709] ? init_object+0x62/0xd0 [26620.095712] ttm_bo_validate+0x7a/0x180 [ttm] [26620.095713] ? _raw_spin_unlock_irqrestore+0x16/0x30 [26620.095714] __i915_ttm_get_pages+0xb0/0x170 [i915] [26620.095737] i915_ttm_get_pages+0x9f/0x150 [i915] [26620.095759] ? i915_gem_do_execbuffer+0xedc/0x2b40 [i915] [26620.095786] ? alloc_debug_processing+0xd0/0x100 [26620.095787] ? _raw_spin_unlock_irqrestore+0x16/0x30 [26620.095788] ? i915_vma_instance+0xa0/0x4e0 [i915] [26620.095822] __i915_gem_object_get_pages+0x2f/0x40 [i915] [26620.095848] i915_vma_pin_ww+0x706/0x980 [i915] [26620.095875] ? i915_gem_do_execbuffer+0xedc/0x2b40 [i915] [26620.095904] eb_validate_vmas+0x170/0xa00 [i915] [26620.095930] i915_gem_do_execbuffer+0x1201/0x2b40 [i915] [26620.095953] ? alloc_debug_processing+0xd0/0x100 [26620.095954] ? _raw_spin_unlock_irqrestore+0x16/0x30 [26620.095955] ? i915_gem_execbuffer2_ioctl+0xc9/0x240 [i915] [26620.095977] ? __wake_up_sync_key+0x32/0x50 [26620.095979] ? i915_gem_execbuffer2_ioctl+0xc9/0x240 [i915] [26620.096001] ? __slab_alloc.isra.0+0x67/0xc0 [26620.096003] i915_gem_execbuffer2_ioctl+0x11a/0x240 [i915]

Results from decode_stacktrace.sh pointed to dereference of a file pointer field of a i915 TTM page vector container associated with an object being purged on eviction. That path is taken when the object is marked as no longer needed.

Code analysis revealed a possibility of the i915 TTM page vector container being replaced with a new instance inside a function that purges content of the object, should it be still busy. That function is called, indirectly via a more general function that changes the object's placement and caching policy, ---truncated---

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
7%
KEV
Not listed

Published

July 19, 2026

Last Modified

August 5, 2026

Advisory Details (6)

Auto-updated Jul 21, 2026
No patch confirmed yet.
generic

drm/i915: Fix potential UAF in TTM object purge - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/df73f3bc731af1c39ac5405bc59c4e7c6f8e9117
generic

drm/i915: Fix potential UAF in TTM object purge - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c9ae7e7e3bc98615364313b08d7acea5239ded0b
generic

drm/i915: Fix potential UAF in TTM object purge - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a29654d451bbffe63d584a4cf64ad0efce6bcf1c
generic

drm/i915: Fix potential UAF in TTM object purge - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5c4063c87a619e4df954c179d24628636f5db15f
generic

drm/i915: Fix potential UAF in TTM object purge - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/28b22dbaf407598cb3bb1d2c586a6f8018690ac2
generic

drm/i915: Fix potential UAF in TTM object purge - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/073bcbc95e9648c976da1654c7590a8d6ee12c2d

Vendor Advisories for CVE-2026-63884(5)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(10)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16) @ resolute2026-09-18ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-09-18ubuntu
ubuntulinux-tools-gcp-edge (7.0.0-1011.11~24.04.1) @ noble2026-09-18ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-09-18ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-09-18ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-09-18ubuntu
redhatkernel-0:6.12.0-211.49.1.el10_22026-08-20redhat
redhatkernel-0:5.14.0-687.41.1.el9_82026-08-20redhat
redhatkernel-0:4.18.0-553.156.1.el8_102026-08-17redhat
redhatkernel-rt-0:4.18.0-553.156.1.rt7.497.el8_102026-08-17redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (53 versions)6.1.176-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.94-1~bpo12+1 (27 versions)6.12.94-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (141 versions)7.0.12-1—

Additional Vendor Advisories

(6)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 22× in last 7d / 98× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 257 total refreshes for this CVE.

  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 04:24 UTCEG score recompute
  3. 2026-09-18 04:24 UTCVendor advisory
  4. 2026-09-18 04:24 UTCGHSA enrichment
  5. 2026-09-17 10:00 UTCEG score recompute
  6. 2026-09-17 10:00 UTCVendor advisory
  7. 2026-09-17 10:00 UTCGHSA enrichment
  8. 2026-09-16 14:08 UTCEPSS rescore
  9. 2026-09-16 13:08 UTCEG score recompute
  10. 2026-09-16 13:08 UTCVendor advisory
  11. 2026-09-16 13:07 UTCGHSA enrichment
  12. 2026-09-16 05:15 UTCEPSS rescore
  13. 2026-09-14 05:06 UTCEG score recompute
  14. 2026-09-14 05:06 UTCVendor advisory
  15. 2026-09-14 05:06 UTCGHSA enrichment
  16. 2026-09-13 16:20 UTCVendor advisory
  17. 2026-09-13 16:20 UTCGHSA enrichment
  18. 2026-09-13 03:34 UTCEG score recompute
  19. 2026-09-13 03:34 UTCVendor advisory
  20. 2026-09-13 03:34 UTCGHSA enrichment
  21. 2026-09-12 10:11 UTCVendor advisory
  22. 2026-09-12 10:11 UTCGHSA enrichment
  23. 2026-09-11 19:41 UTCEG score recompute
  24. 2026-09-11 19:41 UTCVendor advisory
  25. 2026-09-11 19:41 UTCGHSA enrichment
Show 75 more
  1. 2026-09-11 14:53 UTCEPSS rescore
  2. 2026-09-11 09:37 UTCEPSS rescore
  3. 2026-09-08 22:01 UTCEPSS rescore
  4. 2026-09-07 23:38 UTCEG score recompute
  5. 2026-09-07 23:38 UTCVendor advisory
  6. 2026-09-07 23:37 UTCGHSA enrichment
  7. 2026-09-07 16:01 UTCEPSS rescore
  8. 2026-09-06 13:47 UTCEPSS rescore
  9. 2026-09-06 13:04 UTCVendor advisory
  10. 2026-09-06 13:04 UTCGHSA enrichment
  11. 2026-09-05 20:12 UTCEG score recompute
  12. 2026-09-05 20:12 UTCVendor advisory
  13. 2026-09-05 20:11 UTCGHSA enrichment
  14. 2026-09-05 15:31 UTCEPSS rescore
  15. 2026-09-04 05:07 UTCEPSS rescore
  16. 2026-09-02 14:12 UTCEPSS rescore
  17. 2026-09-01 13:54 UTCEPSS rescore
  18. 2026-09-01 04:40 UTCEPSS rescore
  19. 2026-08-31 04:32 UTCEG score recompute
  20. 2026-08-31 04:32 UTCVendor advisory
  21. 2026-08-31 04:32 UTCGHSA enrichment
  22. 2026-08-30 19:17 UTCEPSS rescore
  23. 2026-08-30 15:45 UTCVendor advisory
  24. 2026-08-30 15:45 UTCGHSA enrichment
  25. 2026-08-30 02:59 UTCEG score recompute
  26. 2026-08-30 02:59 UTCVendor advisory
  27. 2026-08-30 02:59 UTCGHSA enrichment
  28. 2026-08-30 01:22 UTCEPSS rescore
  29. 2026-08-28 21:42 UTCEPSS rescore
  30. 2026-08-28 02:05 UTCEG score recompute
  31. 2026-08-28 02:05 UTCVendor advisory
  32. 2026-08-28 02:05 UTCGHSA enrichment
  33. 2026-08-27 14:25 UTCEPSS rescore
  34. 2026-08-27 13:16 UTCVendor advisory
  35. 2026-08-27 13:16 UTCGHSA enrichment
  36. 2026-08-27 00:30 UTCEG score recompute
  37. 2026-08-27 00:30 UTCVendor advisory
  38. 2026-08-27 00:30 UTCGHSA enrichment
  39. 2026-08-26 14:46 UTCEPSS rescore
  40. 2026-08-26 11:43 UTCVendor advisory
  41. 2026-08-26 11:42 UTCGHSA enrichment
  42. 2026-08-25 22:45 UTCEG score recompute
  43. 2026-08-25 22:45 UTCVendor advisory
  44. 2026-08-25 22:44 UTCGHSA enrichment
  45. 2026-08-25 13:49 UTCEPSS rescore
  46. 2026-08-25 09:39 UTCVendor advisory
  47. 2026-08-25 09:39 UTCGHSA enrichment
  48. 2026-08-24 20:53 UTCEG score recompute
  49. 2026-08-24 20:53 UTCVendor advisory
  50. 2026-08-24 20:53 UTCGHSA enrichment
  51. 2026-08-24 08:06 UTCVendor advisory
  52. 2026-08-24 08:06 UTCGHSA enrichment
  53. 2026-08-23 19:20 UTCVendor advisory
  54. 2026-08-23 19:19 UTCGHSA enrichment
  55. 2026-08-23 06:33 UTCEG score recompute
  56. 2026-08-23 06:33 UTCVendor advisory
  57. 2026-08-23 06:32 UTCGHSA enrichment
  58. 2026-08-23 00:19 UTCEPSS rescore
  59. 2026-08-22 17:46 UTCVendor advisory
  60. 2026-08-22 17:46 UTCGHSA enrichment
  61. 2026-08-22 05:00 UTCEG score recompute
  62. 2026-08-22 05:00 UTCVendor advisory
  63. 2026-08-22 05:00 UTCGHSA enrichment
  64. 2026-08-21 23:49 UTCEPSS rescore
  65. 2026-08-21 16:13 UTCVendor advisory
  66. 2026-08-21 16:13 UTCGHSA enrichment
  67. 2026-08-21 03:25 UTCEG score recompute
  68. 2026-08-21 03:25 UTCVendor advisory
  69. 2026-08-21 03:25 UTCGHSA enrichment
  70. 2026-08-21 03:23 UTCGHSA enrichment
  71. 2026-08-20 22:55 UTCEPSS rescore
  72. 2026-08-20 14:36 UTCVendor advisory
  73. 2026-08-20 14:36 UTCGHSA enrichment
  74. 2026-08-20 00:37 UTCEG score recompute
  75. 2026-08-20 00:37 UTCVendor advisory

Frequently asked(5)

What is CVE-2026-63884?
CVE-2026-63884 is a high vulnerability published on July 19, 2026. In the Linux kernel, the following vulnerability has been resolved: drm/i915: Fix potential UAF in TTM object purge TLDR: The bo->ttm object might be changed by calling ttmbovalidate(), move casting it to an i915_tt object later to actually get the right pointer. A user reported hitting the…
When was CVE-2026-63884 disclosed?
CVE-2026-63884 was first published in the National Vulnerability Database on July 19, 2026, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-63884 actively exploited?
CVE-2026-63884 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 92.6% of all scored CVEs.
What is the CVSS score of CVE-2026-63884?
CVE-2026-63884 has a CVSS v4.0 base score of 7.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-63884?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-63884, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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