CVE-2024-56652 (GCVE-0-2024-56652)

Vulnerability from cvelistv5 – Published: 2024-12-27 15:06 – Updated: 2026-08-05 11:45
VLAI
Title
drm/xe/reg_sr: Remove register pool
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/xe/reg_sr: Remove register pool That pool implementation doesn't really work: if the krealloc happens to move the memory and return another address, the entries in the xarray become invalid, leading to use-after-free later: BUG: KASAN: slab-use-after-free in xe_reg_sr_apply_mmio+0x570/0x760 [xe] Read of size 4 at addr ffff8881244b2590 by task modprobe/2753 Allocated by task 2753: kasan_save_stack+0x39/0x70 kasan_save_track+0x14/0x40 kasan_save_alloc_info+0x37/0x60 __kasan_kmalloc+0xc3/0xd0 __kmalloc_node_track_caller_noprof+0x200/0x6d0 krealloc_noprof+0x229/0x380 Simplify the code to fix the bug. A better pooling strategy may be added back later if needed. (cherry picked from commit e5283bd4dfecbd3335f43b62a68e24dae23f59e4)
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-11 15:41 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: dd08ebf6c3525a7ea2186e636df064ea47281987 , < b0193a31a0ca5a0f9e60bb4a86537d46b98111b8 (git)
Affected: dd08ebf6c3525a7ea2186e636df064ea47281987 , < d7b028656c29b22fcde1c6ee1df5b28fbba987b5 (git)
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Linux Linux Affected: 6.8
Unaffected: 0 , < 6.8 (semver)
Unaffected: 6.12.6 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/xe/reg_sr: Eliminar el grupo de registros Esa implementaci\u00f3n del grupo no funciona realmente: si el krealloc mueve la memoria y devuelve otra direcci\u00f3n, las entradas en el xarray dejan de ser v\u00e1lidas, lo que lleva a un use-after-free m\u00e1s adelante: ERROR: KASAN: slab-use-after-free en xe_reg_sr_apply_mmio+0x570/0x760 [xe] Lectura de tama\u00f1o 4 en la direcci\u00f3n ffff8881244b2590 por la tarea modprobe/2753 Asignado por la tarea 2753: kasan_save_stack+0x39/0x70 kasan_save_track+0x14/0x40 kasan_save_alloc_info+0x37/0x60 __kasan_kmalloc+0xc3/0xd0 __kmalloc_node_track_caller_noprof+0x200/0x6d0 krealloc_noprof+0x229/0x380 Simplifique el c\u00f3digo para corregir el error. Es posible que se agregue una mejor estrategia de agrupamiento m\u00e1s adelante si es necesario. (seleccionada de el commit e5283bd4dfecbd3335f43b62a68e24dae23f59e4)"
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                "drivers/gpu/drm/xe/xe_reg_sr_types.h"
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              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "6.8"
                },
                {
                  "lessThan": "6.8",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.12.*",
                  "status": "unaffected",
                  "version": "6.12.6",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.13",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.12.6",
                      "versionStartIncluding": "6.8",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.13",
                      "versionStartIncluding": "6.8",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/reg_sr: Remove register pool\n\nThat pool implementation doesn\u0027t really work: if the krealloc happens to\nmove the memory and return another address, the entries in the xarray\nbecome invalid, leading to use-after-free later:\n\n\tBUG: KASAN: slab-use-after-free in xe_reg_sr_apply_mmio+0x570/0x760 [xe]\n\tRead of size 4 at addr ffff8881244b2590 by task modprobe/2753\n\n\tAllocated by task 2753:\n\t kasan_save_stack+0x39/0x70\n\t kasan_save_track+0x14/0x40\n\t kasan_save_alloc_info+0x37/0x60\n\t __kasan_kmalloc+0xc3/0xd0\n\t __kmalloc_node_track_caller_noprof+0x200/0x6d0\n\t krealloc_noprof+0x229/0x380\n\nSimplify the code to fix the bug. A better pooling strategy may be added\nback later if needed.\n\n(cherry picked from commit e5283bd4dfecbd3335f43b62a68e24dae23f59e4)"
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "scenarios": [
                {
                  "lang": "en",
                  "value": "AV:L - The vulnerable code is in the i915/xe GPU driver and is reached through local driver init and through GT/engine resets driven by a local DRM render-node client; there is no network-reachable path.\nAC:L - The dangling pointers arise deterministically whenever a save/restore table exceeds 16 entries (the normal case on modern platforms \u2014 the KASAN splat comes from a plain modprobe), and there is no race to win: the attacker can re-trigger the use of the freed entries at will by forcing GT resets.\nPR:L - A basic unprivileged user with an fd on /dev/dri/renderD* \u2014 standard for any desktop, container or GPU-compute session \u2014 can submit a hanging exec queue to force the GT reset that re-walks the dangling entries, and can spray the freed kmalloc-256 slab beforehand.\nUI:N - The corrupt xarray is built automatically during driver probe and the reset path is triggered entirely by the attacker\u0027s own GPU submissions; no victim action is required.\nS:U - The use-after-free, the out-of-bounds iomem write and the resulting corruption all occur within the host kernel\u0027s own security authority; no VM, sandbox or IOMMU boundary is crossed.\nC:H - This is a slab use-after-free read: freed heap contents are consumed as register descriptors and are additionally printed verbatim through the xe_reg_sr_dump() debugfs interface, and the UAF gives the attacker control over freed-object contents enabling broader disclosure.\nI:H - Freed memory supplies both the 28-bit offset and the value of an unbounded writel(val, mmio-\u003eregs + addr) against a SZ_4M mapping, yielding an out-of-bounds kernel iomem write plus arbitrary GT register reprogramming \u2014 including the RING_FORCE_TO_NONPRIV whitelist slots that gate what unprivileged GPU batches may touch.\nA:H - A KASAN-confirmed use-after-free that programs garbage register addresses/values into the GPU on every GT reset, wedging the device and causing oopses/panics from writes past the ioremapped BAR window; it can be re-triggered repeatedly."
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-05T11:45:49.934Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/b0193a31a0ca5a0f9e60bb4a86537d46b98111b8"
            },
            {
              "url": "https://git.kernel.org/stable/c/d7b028656c29b22fcde1c6ee1df5b28fbba987b5"
            }
          ],
          "title": "drm/xe/reg_sr: Remove register pool",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-56652",
        "datePublished": "2024-12-27T15:06:16.454Z",
        "dateReserved": "2024-12-27T15:00:39.841Z",
        "dateUpdated": "2026-08-05T11:45:49.934Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


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