CVE-2026-89815: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-w5c5-94w7-pxg8
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CVSS 7.8
Published
Advisory Summary

CVE-2026-89815 is a HIGH (CVSS 7.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-89815 at a Glance

CVE Identifier CVE-2026-89815
GHSA Identifier GHSA-w5c5-94w7-pxg8
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-89815

To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-89815, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under General Security Weakness. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

In the Linux kernel, the following vulnerability has been resolved: drm/ttm: Drop tt->restore after successful restore ttm_pool_restore_and_alloc() can successfully complete the restore process via ttm_pool_restore_commit(), but tt->restore is not dropped afterward. As a result, subsequent backup/restore flows observe what appears to be a completed restore, while in reality shmem handles are still installed in tt->pages, leading to the stack trace below. Fix this by freeing and dropping tt->restore in ttm_pool_restore_and_alloc() upon successful completion of the restore. 20545 [  309.784531] RIP: 0010:sg_alloc_append_table_from_pages+0x38c/0x490 20547 [  309.809570] RSP: 0018:ffffc9000623b838 EFLAGS: 00010206 20548 [  309.814827] RAX: 0000000000001000 RBX: ffff88816e42a160 RCX: 0000000000000000 20549 [  309.821986] RDX: 0000000000002000 RSI: 0000000000000003 RDI: 0000000000001000 20550 [  309.829147] RBP: ffff88816e42a168 R08: 0000000000000002 R09: 000000007ffff000 20551 [  309.836310] R10: ffffc9000623b928 R11: 0000000000000000 R12: 000000007ffff000 20552 [  309.843471] R13: ffff88815ba5a100 R14: 0000000000000000 R15: 0000000000000001 20553 [  309.850634] FS:  00007f9ff305e700(0000) GS:ffff888276c94000(0000) knlGS:0000000000000000 20554 [  309.858749] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033 20555 [  309.864519] CR2: 00007f9fca701000 CR3: 00000001565e2005 CR4: 0000000008f70ef0 20556 [  309.871678] PKRU: 55555558 20557 [  309.874403] Call Trace: 20558 [  309.876866]  <TASK> 20559 [  309.878988]  sg_alloc_table_from_pages_segment+0x60/0x100 20560 [  309.884415]  ? ttm_resource_manager_usage+0x36/0x60 [ttm] 20561 [  309.889845]  ? xe_tt_map_sg+0x7d/0xd0 [xe] 20562 [  309.894045]  xe_tt_map_sg+0x7d/0xd0 [xe] 20563 [  309.898037]  xe_bo_move+0x927/0xaa0 [xe] 20564 [  309.902029]  ttm_bo_handle_move_mem+0xba/0x170 [ttm] 20565 [  309.907022]  ttm_bo_validate+0xbe/0x190 [ttm] 20566 [  309.911405]  xe_bo_validate+0x9a/0x120 [xe] 20567 [  309.915663]  xe_gpuvm_validate+0xd9/0x140 [xe] 20568 [  309.920206]  drm_gpuvm_validate+0x2f0/0x5b0 [drm_gpuvm] 20569 [  309.925459]  ? drm_exec_lock_obj+0x63/0x210 [drm_exec] 20570 [  309.930627]  xe_vm_validate_rebind+0x46/0xb0 [xe] 20571 [  309.935428]  xe_exec_fn+0x20/0x40 [xe] 20572 [  309.939249]  drm_gpuvm_exec_lock+0x78/0xc0 [drm_gpuvm] 20573 [  309.944410]  xe_validation_exec_lock+0x5a/0xa0 [xe] 20574 [  309.949385]  xe_exec_ioctl+0x806/0xc30 [xe] 20575 [  309.953639]  ? ttwu_queue_wakelist+0xd9/0xf0 20576 [  309.957935]  ? __pfx_xe_exec_fn+0x10/0x10 [xe] 20577 [  309.962449]  ? __wake_up_common+0x73/0xa0 20578 [  309.966482]  ? __pfx_xe_exec_ioctl+0x10/0x10 [xe] 20579 [  309.971263]  drm_ioctl_kernel+0xa3/0x100 20580 [  309.975209]  drm_ioctl+0x213/0x440 20581 [  309.978637]  ? __pfx_xe_exec_ioctl+0x10/0x10 [xe] 20582 [  309.983415]  xe_drm_ioctl+0x67/0xd0 [xe] 20583 [  309.987408]  __x64_sys_ioctl+0x7f/0xd0

References

NVD — CVE-2026-89815 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89815
git.kernel.org/stable/c/329ddc5d43... WEB
https://git.kernel.org/stable/c/329ddc5d438f991f49e4fd24c704d1c7288d5e03
git.kernel.org/stable/c/941ac10529... WEB
https://git.kernel.org/stable/c/941ac10529b3be5965a88d432a161ab459672ba8
git.kernel.org/stable/c/a46ab76b6c... WEB
https://git.kernel.org/stable/c/a46ab76b6cf5478e2ac7b942a377c7a1827b436a

Frequently Asked Questions

What is CVE-2026-89815?
CVE-2026-89815 is a security vulnerability in Software classified as a security vulnerability vulnerability under General Security Weakness.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-89815?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-89815?
CVE-2026-89815 has a CVSS v3.1 base score of 7.8 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-89815?
CVE-2026-89815 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89815?
Run the dependency tree command: 'mvn dependency:tree'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-w5c5-94w7-pxg8",
  "modified" : "2026-09-21T15:31:43Z",
  "published" : "2026-09-16T12:30:37Z",
  "aliases" : [ "CVE-2026-89815" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/ttm: Drop tt->restore after successful restore\n\nttm_pool_restore_and_alloc() can successfully complete the restore\nprocess via ttm_pool_restore_commit(), but tt->restore is not dropped\nafterward. As a result, subsequent backup/restore flows observe what\nappears to be a completed restore, while in reality shmem handles are\nstill installed in tt->pages, leading to the stack trace below.\n\nFix this by freeing and dropping tt->restore in\nttm_pool_restore_and_alloc() upon successful completion of the restore.\n\n20545 [  309.784531] RIP: 0010:sg_alloc_append_table_from_pages+0x38c/0x490\n20547 [  309.809570] RSP: 0018:ffffc9000623b838 EFLAGS: 00010206\n20548 [  309.814827] RAX: 0000000000001000 RBX: ffff88816e42a160 RCX: 0000000000000000\n20549 [  309.821986] RDX: 0000000000002000 RSI: 0000000000000003 RDI: 0000000000001000\n20550 [  309.829147] RBP: ffff88816e42a168 R08: 0000000000000002 R09: 000000007ffff000\n20551 [  309.836310] R10: ffffc9000623b928 R11: 0000000000000000 R12: 000000007ffff000\n20552 [  309.843471] R13: ffff88815ba5a100 R14: 0000000000000000 R15: 0000000000000001\n20553 [  309.850634] FS:  00007f9ff305e700(0000) GS:ffff888276c94000(0000) knlGS:0000000000000000\n20554 [  309.858749] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n20555 [  309.864519] CR2: 00007f9fca701000 CR3: 00000001565e2005 CR4: 0000000008f70ef0\n20556 [  309.871678] PKRU: 55555558\n20557 [  309.874403] Call Trace:\n20558 [  309.876866]  <TASK>\n20559 [  309.878988]  sg_alloc_table_from_pages_segment+0x60/0x100\n20560 [  309.884415]  ? ttm_resource_manager_usage+0x36/0x60 [ttm]\n20561 [  309.889845]  ? xe_tt_map_sg+0x7d/0xd0 [xe]\n20562 [  309.894045]  xe_tt_map_sg+0x7d/0xd0 [xe]\n20563 [  309.898037]  xe_bo_move+0x927/0xaa0 [xe]\n20564 [  309.902029]  ttm_bo_handle_move_mem+0xba/0x170 [ttm]\n20565 [  309.907022]  ttm_bo_validate+0xbe/0x190 [ttm]\n20566 [  309.911405]  xe_bo_validate+0x9a/0x120 [xe]\n20567 [  309.915663]  xe_gpuvm_validate+0xd9/0x140 [xe]\n20568 [  309.920206]  drm_gpuvm_validate+0x2f0/0x5b0 [drm_gpuvm]\n20569 [  309.925459]  ? drm_exec_lock_obj+0x63/0x210 [drm_exec]\n20570 [  309.930627]  xe_vm_validate_rebind+0x46/0xb0 [xe]\n20571 [  309.935428]  xe_exec_fn+0x20/0x40 [xe]\n20572 [  309.939249]  drm_gpuvm_exec_lock+0x78/0xc0 [drm_gpuvm]\n20573 [  309.944410]  xe_validation_exec_lock+0x5a/0xa0 [xe]\n20574 [  309.949385]  xe_exec_ioctl+0x806/0xc30 [xe]\n20575 [  309.953639]  ? ttwu_queue_wakelist+0xd9/0xf0\n20576 [  309.957935]  ? __pfx_xe_exec_fn+0x10/0x10 [xe]\n20577 [  309.962449]  ? __wake_up_common+0x73/0xa0\n20578 [  309.966482]  ? __pfx_xe_exec_ioctl+0x10/0x10 [xe]\n20579 [  309.971263]  drm_ioctl_kernel+0xa3/0x100\n20580 [  309.975209]  drm_ioctl+0x213/0x440\n20581 [  309.978637]  ? __pfx_xe_exec_ioctl+0x10/0x10 [xe]\n20582 [  309.983415]  xe_drm_ioctl+0x67/0xd0 [xe]\n20583 [  309.987408]  __x64_sys_ioctl+0x7f/0xd0",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-89815"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/329ddc5d438f991f49e4fd24c704d1c7288d5e03"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/941ac10529b3be5965a88d432a161ab459672ba8"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/a46ab76b6cf5478e2ac7b942a377c7a1827b436a"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-16T11:16:46Z"
  }
}