Vulnerability-Lookup

rlsa-2026:38492

Vulnerability from osv_rocky

Published

2026-07-14 18:05

Modified

2026-07-28 12:08

Summary

Important: kernel security update

Details

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

kernel: md/bitmap: fix GPF in write_page caused by resize race (CVE-2026-43163)
kernel: rtmutex: Use waiter::task instead of current in remove_waiter() (CVE-2026-43499)
kernel: futex/requeue: Prevent NULL pointer dereference in remove_waiter() on self-deadlock (CVE-2026-53166)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Severity

7.8 (High)


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

Credits

Rocky Enterprise Software Foundation

Red Hat

References

URL

Type

	https://errata.rockylinux.org/RLSA-2026:38492	ADVISORY
	https://bugzilla.redhat.com/show_bug.cgi?id=2480453	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2467059	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2492805	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Rocky Linux:10",
        "name": "kernel",
        "purl": "pkg:rpm/rocky-linux/kernel?distro=rocky-linux-10\u0026epoch=0"
      },
      "ranges": [
        {
          "database_specific": {
            "yum_repository": "BaseOS"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0:6.12.0-211.33.1.el10_2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "credits": [
    {
      "name": "Rocky Enterprise Software Foundation"
    },
    {
      "name": "Red Hat"
    }
  ],
  "details": "The kernel packages contain the Linux kernel, the core of any Linux operating system.\n\nSecurity Fix(es):\n\n* kernel: md/bitmap: fix GPF in write_page caused by resize race (CVE-2026-43163)\n\n* kernel: rtmutex: Use waiter::task instead of current in remove_waiter() (CVE-2026-43499)\n\n* kernel: futex/requeue: Prevent NULL pointer dereference in remove_waiter() on self-deadlock (CVE-2026-53166)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
  "id": "RLSA-2026:38492",
  "modified": "2026-07-28T12:08:10.913498Z",
  "published": "2026-07-14T18:05:26.050107Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://errata.rockylinux.org/RLSA-2026:38492"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480453"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467059"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492805"
    }
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Important: kernel security update",
  "upstream": [
    "CVE-2026-43163",
    "CVE-2026-43499",
    "CVE-2026-53166"
  ]
}

CVE-2026-43163 (GCVE-0-2026-43163)

Vulnerability from cvelistv5 – Published: 2026-05-06 11:27 – Updated: 2026-05-11 22:18

Title

md/bitmap: fix GPF in write_page caused by resize race

Summary

In the Linux kernel, the following vulnerability has been resolved: md/bitmap: fix GPF in write_page caused by resize race A General Protection Fault occurs in write_page() during array resize: RIP: 0010:write_page+0x22b/0x3c0 [md_mod] This is a use-after-free race between bitmap_daemon_work() and __bitmap_resize(). The daemon iterates over `bitmap->storage.filemap` without locking, while the resize path frees that storage via md_bitmap_file_unmap(). `quiesce()` does not stop the md thread, allowing concurrent access to freed pages. Fix by holding `mddev->bitmap_info.mutex` during the bitmap update.

Severity

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/140cc839fbeb1ddb3…
https://git.kernel.org/stable/c/ebcacc7ca22d5e8a0…
https://git.kernel.org/stable/c/d3af62411e19752c6…
https://git.kernel.org/stable/c/d92b8fac294b5f915…
https://git.kernel.org/stable/c/a437e3bf30e328460…
https://git.kernel.org/stable/c/9a6f8cd28bb9bb6ed…
https://git.kernel.org/stable/c/5f73c8b33df9a605a…
https://git.kernel.org/stable/c/46ef85f854dfa9d52…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: d60b479d177a5735b6b4db6ee5280ef6653f50e7 , < 140cc839fbeb1ddb33a8da8811b716d88d3905b7 (git) Affected: d60b479d177a5735b6b4db6ee5280ef6653f50e7 , < ebcacc7ca22d5e8a03a970f0621ae1d1356b9ae8 (git) Affected: d60b479d177a5735b6b4db6ee5280ef6653f50e7 , < d3af62411e19752c663fe4f424dbf49d95a4cc7c (git) Affected: d60b479d177a5735b6b4db6ee5280ef6653f50e7 , < d92b8fac294b5f915c50e65ce4ae2262e53614ec (git) Affected: d60b479d177a5735b6b4db6ee5280ef6653f50e7 , < a437e3bf30e32846079e470c1ba5ee790bccdf89 (git) Affected: d60b479d177a5735b6b4db6ee5280ef6653f50e7 , < 9a6f8cd28bb9bb6ed86a6df19331fb08016dee7f (git) Affected: d60b479d177a5735b6b4db6ee5280ef6653f50e7 , < 5f73c8b33df9a605a591eab72d43a969600c1f8c (git) Affected: d60b479d177a5735b6b4db6ee5280ef6653f50e7 , < 46ef85f854dfa9d5226b3c1c46493d79556c9589 (git)
Linux	Linux	Affected: 3.5 Unaffected: 0 , < 3.5 (semver) Unaffected: 5.10.252 , ≤ 5.10.* (semver) Unaffected: 5.15.202 , ≤ 5.15.* (semver) Unaffected: 6.1.165 , ≤ 6.1.* (semver) Unaffected: 6.6.128 , ≤ 6.6.* (semver) Unaffected: 6.12.75 , ≤ 6.12.* (semver) Unaffected: 6.18.16 , ≤ 6.18.* (semver) Unaffected: 6.19.6 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/md/md-bitmap.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
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              "versionType": "git"
            },
            {
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              "versionType": "git"
            },
            {
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              "versionType": "git"
            },
            {
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              "status": "affected",
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            },
            {
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              "versionType": "git"
            },
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          ],
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.5"
            },
            {
              "lessThan": "3.5",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.252",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.202",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.165",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.128",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.75",
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            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.252",
                  "versionStartIncluding": "3.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.202",
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                  "vulnerable": true
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                  "vulnerable": true
                },
                {
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                {
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                {
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                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "3.5",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmd/bitmap: fix GPF in write_page caused by resize race\n\nA General Protection Fault occurs in write_page() during array resize:\nRIP: 0010:write_page+0x22b/0x3c0 [md_mod]\n\nThis is a use-after-free race between bitmap_daemon_work() and\n__bitmap_resize(). The daemon iterates over `bitmap-\u003estorage.filemap`\nwithout locking, while the resize path frees that storage via\nmd_bitmap_file_unmap(). `quiesce()` does not stop the md thread,\nallowing concurrent access to freed pages.\n\nFix by holding `mddev-\u003ebitmap_info.mutex` during the bitmap update."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T22:18:58.873Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/ebcacc7ca22d5e8a03a970f0621ae1d1356b9ae8"
        },
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          "url": "https://git.kernel.org/stable/c/d3af62411e19752c663fe4f424dbf49d95a4cc7c"
        },
        {
          "url": "https://git.kernel.org/stable/c/d92b8fac294b5f915c50e65ce4ae2262e53614ec"
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          "url": "https://git.kernel.org/stable/c/a437e3bf30e32846079e470c1ba5ee790bccdf89"
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          "url": "https://git.kernel.org/stable/c/9a6f8cd28bb9bb6ed86a6df19331fb08016dee7f"
        },
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          "url": "https://git.kernel.org/stable/c/5f73c8b33df9a605a591eab72d43a969600c1f8c"
        },
        {
          "url": "https://git.kernel.org/stable/c/46ef85f854dfa9d5226b3c1c46493d79556c9589"
        }
      ],
      "title": "md/bitmap: fix GPF in write_page caused by resize race",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43163",
    "datePublished": "2026-05-06T11:27:41.265Z",
    "dateReserved": "2026-05-01T14:12:55.990Z",
    "dateUpdated": "2026-05-11T22:18:58.873Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-43499 (GCVE-0-2026-43499)

Vulnerability from cvelistv5 – Published: 2026-05-21 12:17 – Updated: 2026-07-24 14:33

Title

rtmutex: Use waiter::task instead of current in remove_waiter()

Summary

In the Linux kernel, the following vulnerability has been resolved: rtmutex: Use waiter::task instead of current in remove_waiter() remove_waiter() is used by the slowlock paths, but it is also used for proxy-lock rollback in rt_mutex_start_proxy_lock() when invoked from futex_requeue(). In the latter case waiter::task is not current, but remove_waiter() operates on current for the dequeue operation. That results in several problems: 1) the rbtree dequeue happens without waiter::task::pi_lock being held 2) the waiter task's pi_blocked_on state is not cleared, which leaves a dangling pointer primed for UAF around. 3) rt_mutex_adjust_prio_chain() operates on the wrong top priority waiter task Use waiter::task instead of current in all related operations in remove_waiter() to cure those problems. [ tglx: Fixup rt_mutex_adjust_prio_chain(), add a comment and amend the changelog ]

Severity

7.8 (High)


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

Assigner

Linux

References

9 references

URL	Tags
https://git.kernel.org/stable/c/f3fa3424bceb128d2…
https://git.kernel.org/stable/c/838ce5cb5d93c3ab8…
https://git.kernel.org/stable/c/d8cce4773c2b23d81…
https://git.kernel.org/stable/c/8a1fc8d698ac5e591…
https://git.kernel.org/stable/c/6d52dfcb2a5db86e3…
https://git.kernel.org/stable/c/3fb7394a837740770…
https://git.kernel.org/stable/c/88614876370aac8ad…
https://git.kernel.org/stable/c/3bfdc63936dd47731…
http://www.openwall.com/lists/oss-security/2026/0…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 8161239a8bcce9ad6b537c04a1fa3b5c68bae693 , < f3fa3424bceb128d2be4b3745506b22844b87db7 (git) Affected: 8161239a8bcce9ad6b537c04a1fa3b5c68bae693 , < 838ce5cb5d93c3ab8b27e75bc6ad905a94b752fd (git) Affected: 8161239a8bcce9ad6b537c04a1fa3b5c68bae693 , < d8cce4773c2b23d819baf5abedc62f7b430e8745 (git) Affected: 8161239a8bcce9ad6b537c04a1fa3b5c68bae693 , < 8a1fc8d698ac5e5916e3082a0f74450d71f9611f (git) Affected: 8161239a8bcce9ad6b537c04a1fa3b5c68bae693 , < 6d52dfcb2a5db86e346cf51f8fcf2071b8085166 (git) Affected: 8161239a8bcce9ad6b537c04a1fa3b5c68bae693 , < 3fb7394a837740770f0d6b4b30567e60786a63f2 (git) Affected: 8161239a8bcce9ad6b537c04a1fa3b5c68bae693 , < 88614876370aac8ad1050ad785a4c095ba17ac11 (git) Affected: 8161239a8bcce9ad6b537c04a1fa3b5c68bae693 , < 3bfdc63936dd4773109b7b8c280c0f3b5ae7d349 (git)
Linux	Linux	Affected: 2.6.39 Unaffected: 0 , < 2.6.39 (semver) Unaffected: 5.10.261 , ≤ 5.10.* (semver) Unaffected: 5.15.212 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.140 , ≤ 6.6.* (semver) Unaffected: 6.12.86 , ≤ 6.12.* (semver) Unaffected: 6.18.27 , ≤ 6.18.* (semver) Unaffected: 7.0.4 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2026-07-08T22:22:10.721Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/07/08/12"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
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          "versions": [
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              "version": "2.6.39"
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              "version": "6.1.175",
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              "version": "6.6.140",
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              "status": "unaffected",
              "version": "6.12.86",
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              "lessThanOrEqual": "6.18.*",
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              "version": "6.18.27",
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            },
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              "version": "7.0.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
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CVE-2026-53166 (GCVE-0-2026-53166)

Vulnerability from cvelistv5 – Published: 2026-06-25 08:38 – Updated: 2026-07-10 11:57

This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

Show details on NVD website

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  "containers": {
    "cna": {
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        "dateUpdated": "2026-07-10T11:57:35.720Z",
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        {
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          "value": "This CVE ID has been rejected or withdrawn by its CVE Numbering Authority."
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-53166",
    "datePublished": "2026-06-25T08:38:46.089Z",
    "dateRejected": "2026-07-10T11:57:35.720Z",
    "dateReserved": "2026-06-09T07:44:35.389Z",
    "dateUpdated": "2026-07-10T11:57:35.720Z",
    "state": "REJECTED"
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}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

rlsa-2026:38492

Vulnerability from osv_rocky

CVE-2026-43163 (GCVE-0-2026-43163)

CVE-2026-43499 (GCVE-0-2026-43499)

CVE-2026-53166 (GCVE-0-2026-53166)

Tags

Sightings

Nomenclature