GHSA-X2MC-CH7G-QJ96

Vulnerability from github – Published: 2025-10-21 12:31 – Updated: 2025-10-21 12:31

Details

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

fbdev: defio: fix the pagelist corruption

Easily hit the below list corruption:

list_add corruption. prev->next should be next (ffffffffc0ceb090), but was ffffec604507edc8. (prev=ffffec604507edc8). WARNING: CPU: 65 PID: 3959 at lib/list_debug.c:26 __list_add_valid+0x53/0x80 CPU: 65 PID: 3959 Comm: fbdev Tainted: G U RIP: 0010:__list_add_valid+0x53/0x80 Call Trace: fb_deferred_io_mkwrite+0xea/0x150 do_page_mkwrite+0x57/0xc0 do_wp_page+0x278/0x2f0 __handle_mm_fault+0xdc2/0x1590 handle_mm_fault+0xdd/0x2c0 do_user_addr_fault+0x1d3/0x650 exc_page_fault+0x77/0x180 ? asm_exc_page_fault+0x8/0x30 asm_exc_page_fault+0x1e/0x30 RIP: 0033:0x7fd98fc8fad1 ==

Figure out the race happens when one process is adding &page->lru into the pagelist tail in fb_deferred_io_mkwrite(), another process is re-initializing the same &page->lru in fb_deferred_io_fault(), which is not protected by the lock.

This fix is to init all the page lists one time during initialization, it not only fixes the list corruption, but also avoids INIT_LIST_HEAD() redundantly.

V2: change "int i" to "unsigned int i" (Geert Uytterhoeven)

Severity ?

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49511"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:01:27Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: defio: fix the pagelist corruption\n\nEasily hit the below list corruption:\n==\nlist_add corruption. prev-\u003enext should be next (ffffffffc0ceb090), but\nwas ffffec604507edc8. (prev=ffffec604507edc8).\nWARNING: CPU: 65 PID: 3959 at lib/list_debug.c:26\n__list_add_valid+0x53/0x80\nCPU: 65 PID: 3959 Comm: fbdev Tainted: G     U\nRIP: 0010:__list_add_valid+0x53/0x80\nCall Trace:\n \u003cTASK\u003e\n fb_deferred_io_mkwrite+0xea/0x150\n do_page_mkwrite+0x57/0xc0\n do_wp_page+0x278/0x2f0\n __handle_mm_fault+0xdc2/0x1590\n handle_mm_fault+0xdd/0x2c0\n do_user_addr_fault+0x1d3/0x650\n exc_page_fault+0x77/0x180\n ? asm_exc_page_fault+0x8/0x30\n asm_exc_page_fault+0x1e/0x30\nRIP: 0033:0x7fd98fc8fad1\n==\n\nFigure out the race happens when one process is adding \u0026page-\u003elru into\nthe pagelist tail in fb_deferred_io_mkwrite(), another process is\nre-initializing the same \u0026page-\u003elru in fb_deferred_io_fault(), which is\nnot protected by the lock.\n\nThis fix is to init all the page lists one time during initialization,\nit not only fixes the list corruption, but also avoids INIT_LIST_HEAD()\nredundantly.\n\nV2: change \"int i\" to \"unsigned int i\" (Geert Uytterhoeven)",
  "id": "GHSA-x2mc-ch7g-qj96",
  "modified": "2025-10-21T12:31:26Z",
  "published": "2025-10-21T12:31:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49511"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6a9ae2fe887042f76fd3d334349e64e8ab3c55a2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/856082f021a28221db2c32bd0531614a8382be67"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e79b2b2aadeffe1db54a6b569b9b621575c3eb07"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-49511 (GCVE-0-2022-49511)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:13 – Updated: 2025-05-04 08:39

Summary

In the Linux kernel, the following vulnerability has been resolved: fbdev: defio: fix the pagelist corruption Easily hit the below list corruption: == list_add corruption. prev->next should be next (ffffffffc0ceb090), but was ffffec604507edc8. (prev=ffffec604507edc8). WARNING: CPU: 65 PID: 3959 at lib/list_debug.c:26 __list_add_valid+0x53/0x80 CPU: 65 PID: 3959 Comm: fbdev Tainted: G U RIP: 0010:__list_add_valid+0x53/0x80 Call Trace: <TASK> fb_deferred_io_mkwrite+0xea/0x150 do_page_mkwrite+0x57/0xc0 do_wp_page+0x278/0x2f0 __handle_mm_fault+0xdc2/0x1590 handle_mm_fault+0xdd/0x2c0 do_user_addr_fault+0x1d3/0x650 exc_page_fault+0x77/0x180 ? asm_exc_page_fault+0x8/0x30 asm_exc_page_fault+0x1e/0x30 RIP: 0033:0x7fd98fc8fad1 == Figure out the race happens when one process is adding &page->lru into the pagelist tail in fb_deferred_io_mkwrite(), another process is re-initializing the same &page->lru in fb_deferred_io_fault(), which is not protected by the lock. This fix is to init all the page lists one time during initialization, it not only fixes the list corruption, but also avoids INIT_LIST_HEAD() redundantly. V2: change "int i" to "unsigned int i" (Geert Uytterhoeven)

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/e79b2b2aadeffe1db…
	https://git.kernel.org/stable/c/6a9ae2fe887042f76…
	https://git.kernel.org/stable/c/856082f021a28221d…

Impacted products

Vendor

Product

Version

Linux

Affected: 5d3aff76a3165087b0f897c0d677dfa987d9875d , < e79b2b2aadeffe1db54a6b569b9b621575c3eb07 (git)
Affected: 105a940416fc622406653b6fe54732897642dfbc , < 6a9ae2fe887042f76fd3d334349e64e8ab3c55a2 (git)
Affected: 105a940416fc622406653b6fe54732897642dfbc , < 856082f021a28221db2c32bd0531614a8382be67 (git)

Linux

Affected: 5.18
Unaffected: 0 , < 5.18 (semver)
Unaffected: 5.18.3 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/video/fbdev/core/fb_defio.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e79b2b2aadeffe1db54a6b569b9b621575c3eb07",
              "status": "affected",
              "version": "5d3aff76a3165087b0f897c0d677dfa987d9875d",
              "versionType": "git"
            },
            {
              "lessThan": "6a9ae2fe887042f76fd3d334349e64e8ab3c55a2",
              "status": "affected",
              "version": "105a940416fc622406653b6fe54732897642dfbc",
              "versionType": "git"
            },
            {
              "lessThan": "856082f021a28221db2c32bd0531614a8382be67",
              "status": "affected",
              "version": "105a940416fc622406653b6fe54732897642dfbc",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/video/fbdev/core/fb_defio.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.18"
            },
            {
              "lessThan": "5.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.18.*",
              "status": "unaffected",
              "version": "5.18.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.18.3",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19",
                  "versionStartIncluding": "5.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfbdev: defio: fix the pagelist corruption\n\nEasily hit the below list corruption:\n==\nlist_add corruption. prev-\u003enext should be next (ffffffffc0ceb090), but\nwas ffffec604507edc8. (prev=ffffec604507edc8).\nWARNING: CPU: 65 PID: 3959 at lib/list_debug.c:26\n__list_add_valid+0x53/0x80\nCPU: 65 PID: 3959 Comm: fbdev Tainted: G     U\nRIP: 0010:__list_add_valid+0x53/0x80\nCall Trace:\n \u003cTASK\u003e\n fb_deferred_io_mkwrite+0xea/0x150\n do_page_mkwrite+0x57/0xc0\n do_wp_page+0x278/0x2f0\n __handle_mm_fault+0xdc2/0x1590\n handle_mm_fault+0xdd/0x2c0\n do_user_addr_fault+0x1d3/0x650\n exc_page_fault+0x77/0x180\n ? asm_exc_page_fault+0x8/0x30\n asm_exc_page_fault+0x1e/0x30\nRIP: 0033:0x7fd98fc8fad1\n==\n\nFigure out the race happens when one process is adding \u0026page-\u003elru into\nthe pagelist tail in fb_deferred_io_mkwrite(), another process is\nre-initializing the same \u0026page-\u003elru in fb_deferred_io_fault(), which is\nnot protected by the lock.\n\nThis fix is to init all the page lists one time during initialization,\nit not only fixes the list corruption, but also avoids INIT_LIST_HEAD()\nredundantly.\n\nV2: change \"int i\" to \"unsigned int i\" (Geert Uytterhoeven)"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T08:39:30.414Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/e79b2b2aadeffe1db54a6b569b9b621575c3eb07"
        },
        {
          "url": "https://git.kernel.org/stable/c/6a9ae2fe887042f76fd3d334349e64e8ab3c55a2"
        },
        {
          "url": "https://git.kernel.org/stable/c/856082f021a28221db2c32bd0531614a8382be67"
        }
      ],
      "title": "fbdev: defio: fix the pagelist corruption",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49511",
    "datePublished": "2025-02-26T02:13:41.433Z",
    "dateReserved": "2025-02-26T02:08:31.587Z",
    "dateUpdated": "2025-05-04T08:39:30.414Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-X2MC-CH7G-QJ96

Easily hit the below list corruption:

CVE-2022-49511 (GCVE-0-2022-49511)

Tags

Sightings

Nomenclature