Vulnerability-Lookup

SUSE-SU-2026:20643-1

Vulnerability from csaf_suse - Published: 2026-03-04 09:20 - Updated: 2026-03-04 09:20

Summary

Security update for the Linux Kernel (Live Patch 2 for SUSE Linux Enterprise 16)

Severity

Important

Notes

Title of the patch: Security update for the Linux Kernel (Live Patch 2 for SUSE Linux Enterprise 16)

Description of the patch: This update for the SUSE Linux Enterprise kernel 6.12.0-160000.7.1 fixes one security issue The following security issue was fixed: - CVE-2025-40130: scsi: ufs: core: Fix data race in CPU latency PM QoS request handling (bsc#1253415).

Patchnames: SUSE-SL-Micro-6.2-349

CVE-2025-40130

7 (High)


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

Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

References

URL

Category

	https://www.suse.com/support/security/rating/	external
	https://ftp.suse.com/pub/projects/security/csaf/s…	self
	https://www.suse.com/support/update/announcement/…	self
	https://lists.suse.com/pipermail/sle-security-upd…	self
	https://bugzilla.suse.com/1253415	self
	https://www.suse.com/security/cve/CVE-2025-40130/	self
	https://www.suse.com/security/cve/CVE-2025-40130	external
	https://bugzilla.suse.com/1253414	external
	https://bugzilla.suse.com/1253415	external

JSON

To clipboard

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  "vulnerabilities": [
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          "text": "https://www.suse.com/security/cve/CVE-2025-40130"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: ufs: core: Fix data race in CPU latency PM QoS request handling\n\nThe cpu_latency_qos_add/remove/update_request interfaces lack internal\nsynchronization by design, requiring the caller to ensure thread safety.\nThe current implementation relies on the \u0027pm_qos_enabled\u0027 flag, which is\ninsufficient to prevent concurrent access and cannot serve as a proper\nsynchronization mechanism. This has led to data races and list\ncorruption issues.\n\nA typical race condition call trace is:\n\n[Thread A]\nufshcd_pm_qos_exit()\n  --\u003e cpu_latency_qos_remove_request()\n    --\u003e cpu_latency_qos_apply();\n      --\u003e pm_qos_update_target()\n        --\u003e plist_del              \u003c--(1) delete plist node\n    --\u003e memset(req, 0, sizeof(*req));\n  --\u003e hba-\u003epm_qos_enabled = false;\n\n[Thread B]\nufshcd_devfreq_target\n  --\u003e ufshcd_devfreq_scale\n    --\u003e ufshcd_scale_clks\n      --\u003e ufshcd_pm_qos_update     \u003c--(2) pm_qos_enabled is true\n        --\u003e cpu_latency_qos_update_request\n          --\u003e pm_qos_update_target\n            --\u003e plist_del          \u003c--(3) plist node use-after-free\n\nIntroduces a dedicated mutex to serialize PM QoS operations, preventing\ndata races and ensuring safe access to PM QoS resources, including sysfs\ninterface reads.",
          "title": "CVE description"
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      "title": "CVE-2025-40130"
    }
  ]
}

CVE-2025-40130 (GCVE-0-2025-40130)

Vulnerability from cvelistv5 – Published: 2025-11-12 10:23 – Updated: 2025-12-01 06:18

Title

scsi: ufs: core: Fix data race in CPU latency PM QoS request handling

Summary

In the Linux kernel, the following vulnerability has been resolved: scsi: ufs: core: Fix data race in CPU latency PM QoS request handling The cpu_latency_qos_add/remove/update_request interfaces lack internal synchronization by design, requiring the caller to ensure thread safety. The current implementation relies on the 'pm_qos_enabled' flag, which is insufficient to prevent concurrent access and cannot serve as a proper synchronization mechanism. This has led to data races and list corruption issues. A typical race condition call trace is: [Thread A] ufshcd_pm_qos_exit() --> cpu_latency_qos_remove_request() --> cpu_latency_qos_apply(); --> pm_qos_update_target() --> plist_del <--(1) delete plist node --> memset(req, 0, sizeof(*req)); --> hba->pm_qos_enabled = false; [Thread B] ufshcd_devfreq_target --> ufshcd_devfreq_scale --> ufshcd_scale_clks --> ufshcd_pm_qos_update <--(2) pm_qos_enabled is true --> cpu_latency_qos_update_request --> pm_qos_update_target --> plist_del <--(3) plist node use-after-free Introduces a dedicated mutex to serialize PM QoS operations, preventing data races and ensuring safe access to PM QoS resources, including sysfs interface reads.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/d9df61afb8d23c475…
	https://git.kernel.org/stable/c/79dde5f7dc7c038ee…

Impacted products

Vendor

Product

Version

Linux

Affected: 2777e73fc154e2e87233bdcc0e2402b33815198e , < d9df61afb8d23c475f1be3c714da2c34c156ab01 (git)
Affected: 2777e73fc154e2e87233bdcc0e2402b33815198e , < 79dde5f7dc7c038eec903745dc1550cd4139980e (git)

Linux

Affected: 6.9
Unaffected: 0 , < 6.9 (semver)
Unaffected: 6.17.3 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/ufs/core/ufs-sysfs.c",
            "drivers/ufs/core/ufshcd.c",
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.18",
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              "negate": false,
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        }
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    "datePublished": "2025-11-12T10:23:21.605Z",
    "dateReserved": "2025-04-16T07:20:57.170Z",
    "dateUpdated": "2025-12-01T06:18:35.909Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2"
}

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

SUSE-SU-2026:20643-1

CVE-2025-40130 (GCVE-0-2025-40130)

Tags

Sightings

Nomenclature