CVE-2026-45914

CVEs › CVE-2026-45914

Description

In the Linux kernel, the following vulnerability has been resolved: Revert "hwmon: (ibmpex) fix use-after-free in high/low store" This reverts commit 6946c726c3f4c36f0f049e6f97e88c510b15f65d. Jean Delvare points out that the patch does not completely fix the reported problem, that it in fact introduces a (new) race condition, and that it may actually not be needed in the first place. Various AI reviews agree. Specific and relevant AI feedback: " This reordering sets the driver data to NULL before removing the sensor attributes in the loop below. ibmpex_show_sensor() retrieves this driver data via dev_get_drvdata() but does not check if it is NULL before dereferencing it to access data->sensors[]. If a userspace process reads a sensor file (like temp1_input) while this delete function is running, could it race with the dev_set_drvdata(..., NULL) call here and crash in ibmpex_show_sensor()? Would it be safer to keep the original order where device_remove_file() is called before clearing the driver data? device_remove_file() should wait for any active sysfs callbacks to complete, which might already prevent the use-after-free this patch intends to fix. " Revert the offending patch. If it can be shown that the originally reported alleged race condition does indeed exist, it can always be re-introduced with a complete fix.

Overview

State: PUBLISHED
Assigner (CNA): Linux
CVSS severity: high
CVSS score: 8.4 / 10
CVSS vector: AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Effective score: 8.4 / 10 HIGH source: CNA overview
CWE(s): —
Reserved: 2026-05-13
Published: 2026-05-27 12:17 UTC
Last updated: 2026-05-27 12:17 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/45xxx/CVE-2026-45914.json
Linked Threat: CVE-2026-45914 — CVE-2026-45914

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published: 2026-05-27 14:17:06 UTC
NVD last modified: 2026-06-24 14:55:01 UTC
NVD CVSS v3.1: 7.8 / 10 HIGH source: nvd@nist.gov
NVD CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitability subscore: 1.8 / 10
Impact subscore: 5.9 / 10
EPSS score: 0.0013 (probability of exploitation in next 30 days)
EPSS percentile: 2.63% vs all CVEs — higher = more likely to be exploited, as of 2026-07-27

NVD-assigned CWE(s): CWE-416 (differs from the CNA list above)

NVD / KEV / EPSS data refreshed 2026-07-28 12:43 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-32380
Assigner: Linux
Published: May 27, 2026, 12:17:29 PM
Updated: May 27, 2026, 12:17:29 PM
EUVD base score: 0.0 / 10
EUVD-reported EPSS: 0.1300
Vendors: Linux
Products: Linux (533ead425f8109b02fecc7e72d612b8898ec347a <efd68429f23fb4015b0ebc2392334059e06fad18)

Linux (6.6.120 <6.6.128)

Linux (patch: 5.10.252)

Linux (patch: 7.0)

Linux (patch: 6.18.14)

Linux (6946c726c3f4c36f0f049e6f97e88c510b15f65d <8bde3e395a85017f12af2b0ba5c3684f5af9c006)

Linux (patch: 6.6.128)

Linux (6.12.64 <6.12.75)

Linux (fa37adcf1d564ef58b9dfb01b6c36d35c5294bad <f448acd86835a650f9ea83460b9ca347d3aafba5)

Linux (6.18.3 <6.18.14)

Linux (68d62e5bebbd118b763e8bb210d5cf2198ef450c <914b47c9b824d3d74f31c764163edf93302100b1)

Linux (6.19)

Linux (patch: 6.19.4)

Linux (6946c726c3f4c36f0f049e6f97e88c510b15f65d <894d9c7aab68fd0c70c78b1d03c8fa589fb0f67d)

Linux (patch: 0)

Linux (3ce9b7ae9d4d148672b35147aaf7987a4f82bb94 <05112ba67c824ab416cd54307c0b50aba9f0047a)

Linux (5.10.248 <5.10.252)

Linux (5aa2139201667c1f644601e4529c4acd6bf8db5a <14a38784e09aebc21207dc32fffa05247fc3dd64)

Linux (patch: 6.12.75)

Linux (6.1.160 <6.1.165)

Linux (patch: 6.1.165)
Aliases: GHSA-wf7m-gffh-f29c

ENISA description: In the Linux kernel, the following vulnerability has been resolved: Revert "hwmon: (ibmpex) fix use-after-free in high/low store" This reverts commit 6946c726c3f4c36f0f049e6f97e88c510b15f65d. Jean Delvare points out that the patch does not completely fix the reported problem, that it in fact introduces a (new) race condition, and that it may actually not be needed in the first place. Various AI reviews agree. Specific and relevant AI feedback: " This reordering sets the driver data to NULL before removing the sensor attributes in the loop below. ibmpex_show_sensor() retrieves this driver data via dev_get_drvdata() but does not check if it is NULL before dereferencing it to access data->sensors[]. If a userspace process reads a sensor file (like temp1_input) while this delete function is running, could it race with the dev_set_drvdata(..., NULL) call here and crash in ibmpex_show_sensor()? Would it be safer to keep the original order where device_remove_file() is called before clearing the driver data? device_remove_file() should wait for any active sysfs callbacks to complete, which might already prevent the use-after-free this patch intends to fix. " Revert the offending patch. If it can be shown that the originally reported alleged race condition does indeed exist, it can always be re-introduced with a complete fix.

EUVD references (7)

Affected products (2)

Vendor	Product	Versions	Platforms
Linux	Linux	`3ce9b7ae9d4d148672b35147aaf7987a4f82bb94` (affected), `533ead425f8109b02fecc7e72d612b8898ec347a` (affected), `fa37adcf1d564ef58b9dfb01b6c36d35c5294bad` (affected), `68d62e5bebbd118b763e8bb210d5cf2198ef450c` (affected), `5aa2139201667c1f644601e4529c4acd6bf8db5a` (affected), `6946c726c3f4c36f0f049e6f97e88c510b15f65d` (affected), `6946c726c3f4c36f0f049e6f97e88c510b15f65d` (affected), `5.10.248` (affected), `6.1.160` (affected), `6.6.120` (affected), `6.12.64` (affected), `6.18.3` (affected)	—
Linux	Linux	`6.19` (affected), `0` (unaffected), `5.10.252` (unaffected), `6.1.165` (unaffected), `6.6.128` (unaffected), `6.12.75` (unaffected), `6.18.14` (unaffected), `6.19.4` (unaffected), `7.0` (unaffected)	—

Affected products — CPE 2.3 (9) NVD

NVD's normalized CPE 2.3 matchers, used by vendor tools (vulnerability scanners, asset managers) for automated detection. Compare with the CNA's free-text "Affected products" section above.

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.19:rc8:*:*:*:*:*:*

Vendor references (7)

References embedded in the original CVE record by the assigning CNA.

Web references (10)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

https://git.kernel.org/stable/c/05112ba67c824ab416cd54307c0b50aba9f0047a tenable:git.kernel.org
https://git.kernel.org/stable/c/14a38784e09aebc21207dc32fffa05247fc3dd64 tenable:git.kernel.org
https://git.kernel.org/stable/c/894d9c7aab68fd0c70c78b1d03c8fa589fb0f67d tenable:git.kernel.org
https://git.kernel.org/stable/c/8bde3e395a85017f12af2b0ba5c3684f5af9c006 tenable:git.kernel.org
https://git.kernel.org/stable/c/914b47c9b824d3d74f31c764163edf93302100b1 tenable:git.kernel.org
https://git.kernel.org/stable/c/efd68429f23fb4015b0ebc2392334059e06fad18 tenable:git.kernel.org
https://git.kernel.org/stable/c/f448acd86835a650f9ea83460b9ca347d3aafba5 tenable:git.kernel.org
https://nvd.nist.gov/vuln/detail/CVE-2026-45914 tenable:nvd.nist.gov
https://www.cve.org/CVERecord?id=CVE-2026-45914 tenable:www.cve.org
https://www.first.org/epss/ tenable:www.first.org

NVD-tagged references (7)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

https://git.kernel.org/stable/c/05112ba67c824ab416cd54307c0b50aba9f0047a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/14a38784e09aebc21207dc32fffa05247fc3dd64 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/894d9c7aab68fd0c70c78b1d03c8fa589fb0f67d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/8bde3e395a85017f12af2b0ba5c3684f5af9c006 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/914b47c9b824d3d74f31c764163edf93302100b1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/efd68429f23fb4015b0ebc2392334059e06fad18 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
https://git.kernel.org/stable/c/f448acd86835a650f9ea83460b9ca347d3aafba5 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch

Remediations (18)

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

Microsoft Patch Tuesday April 2026 - 168 Vulnerabilities Fixed ...

web:cybersecuritynews.com

Microsoft has released its April 2026 Patch Tuesday security update, addressing 168 vulnerabilities across its product portfolio including one actively exploited zero-day and one publicly disclosed flaw that organizations must prioritize immediately.

2026-06-04 00:15 UTC
Patch Tuesday, April 2026 Edition - Krebs on Security

web:krebsonsecurity.com

For a clickable, per- patch breakdown, check out the SANS Internet Storm Center Patch Tuesday roundup. Running into problems applying any of these updates?

2026-06-04 00:15 UTC
CVE-2026-45914 | Mondoo Vulnerability Intelligence

web:mondoo.com

Would it be safer to keep the original order where device_remove_file () is called before clearing the driver data? device_remove_file () should wait for any active sysfs callbacks to complete, which might already prevent the use-after-free this patch intends to fix . Revert the offending patch .

2026-06-04 00:15 UTC
Security Update Guide - Microsoft

web:portal.msrc.microsoft.com

The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.

2026-06-04 00:15 UTC
Microsoft April 2026 Patch Tuesday fixes 167 flaws, 2 zero-days

web:www.bleepingcomputer.com

Today is Microsoft's April 2026 Patch Tuesday with security updates for 167 flaws, including 2 zero-day vulnerabilities.

2026-06-04 00:15 UTC
Critical Patches Issued for Microsoft Products, April 14, 2026

web:www.cisecurity.org

<p>Multiple vulnerabilities have been discovered in Microsoft products, the most severe of which could allow for remote code execution. Successful exploitation of the most severe of these vulnerabilities could result in an attacker gaining the same privileges as the logged-on user. Depending on the privileges associated with the user, an attacker could then install programs; view, change, or ...

2026-06-04 00:15 UTC
April 2026 Patch Tuesday: Updates and Analysis | CrowdStrike

web:www.crowdstrike.com

Microsoft's April 2026 Patch Tuesday addresses 164 CVEs , featuring 8 Critical vulnerabilities, one exploited zero-day, and one disclosed zero-day.

2026-06-04 00:15 UTC
Microsoft Defender vulnerabilities are being exploited in the wild

web:www.malwarebytes.com

The KEV catalog tracks vulnerabilities known to be exploited in the wild and sets patch deadlines for Federal Civilian Executive Branch (FCEB) agencies. Five of the added vulnerabilities are quite old by vulnerability standards. Patches were released in 2008, 2009, and 2010. But the Microsoft Defender vulnerabilities are from this year. Those ...

2026-06-04 00:15 UTC
Oracle Critical Patch Update Advisory - April 2026

web:www.oracle.com

This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.

2026-06-04 00:15 UTC
Patch Tuesday June 2026: Security Updates & CVE Analysis

web:zecurit.com

Get the complete breakdown of Microsoft's June 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .

2026-06-04 00:15 UTC
Microsoft and Adobe Patch Tuesday, May 2026 Security Update Review

web:blog.qualys.com

May 2026's Patch Tuesday arrives with Microsoft addressing a fresh set of vulnerabilities across its ecosystem, reinforcing the ongoing need for timely patching in an increasingly threat-heavy…

2026-06-19 02:27 UTC
Microsoft Confirms Defender RoguePlanet 0-Day Exploit and Working to ...

web:cybersecuritynews.com

Microsoft has officially acknowledged a critical zero-day vulnerability in Microsoft Defender, publicly dubbed "RoguePlanet," and confirmed it is actively developing a security patch to address the flaw.

2026-06-19 02:27 UTC
Microsoft February 2026 Patch Tuesday fixes 6 zero-days, 58 flaws

web:www.bleepingcomputer.com

Today is Microsoft's February 2026 Patch Tuesday with security updates for 58 flaws, including 6 actively exploited and three publicly disclosed zero-day vulnerabilities.

2026-06-19 02:27 UTC
May 2026 Patch Tuesday: Updates and Analysis | CrowdStrike

web:www.crowdstrike.com

Microsoft has released security updates for 130 vulnerabilities, including 30 critical, in its May 2026 Patch Tuesday rollout.

2026-06-19 02:27 UTC
Microsoft fixes six zero-days on February 2026 Patch Tuesday

web:www.csoonline.com

Microsoft highlighted six new and actively exploited vulnerabilities among the 60 fixes issued in today's February Patch Tuesday releases.

2026-06-19 02:27 UTC
Microsoft working on a fix for RoguePlanet, a flaw that grants full PC ...

web:www.malwarebytes.com

Microsoft says it's working on a fix for an unpatched Defender vulnerability that can give attackers the highest level of access on Windows.

2026-06-19 02:27 UTC
Microsoft Technical Security Notifications

web:www.microsoft.com

Security Update Guide Notifications Microsoft's free Security Update Guide Notifications provide links to security-related software updates and notification of re-released security updates. These notifications are sent via email throughout the month as needed.

2026-06-19 02:27 UTC
Patch Tuesday - June 2026 - Rapid7

web:www.rapid7.com

Microsoft is publishing 200 vulnerabilities on June 2026 Patch Tuesday, including an HTTP/2 denial of service vulnerability and an elevation of privilege vulnerability in PowerToys.

2026-06-19 02:27 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-45914.json.

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/hwmon/ibmpex.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "05112ba67c824ab416cd54307c0b50aba9f0047a",
              "status": "affected",
              "version": "3ce9b7ae9d4d148672b35147aaf7987a4f82bb94",
              "versionType": "git"
            },
            {
              "lessThan": "efd68429f23fb4015b0ebc2392334059e06fad18",
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            },
            {
              "lessThan": "f448acd86835a650f9ea83460b9ca347d3aafba5",
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              "versionType": "git"
            },
            {
              "lessThan": "914b47c9b824d3d74f31c764163edf93302100b1",
              "status": "affected",
              "version": "68d62e5bebbd118b763e8bb210d5cf2198ef450c",
              "versionType": "git"
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            {
              "lessThan": "14a38784e09aebc21207dc32fffa05247fc3dd64",
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              "versionType": "git"
            },
            {
              "lessThan": "894d9c7aab68fd0c70c78b1d03c8fa589fb0f67d",
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            },
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              "status": "affected",
              "version": "6.1.160",
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            },
            {
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              "status": "affected",
              "version": "6.6.120",
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            },
            {
              "lessThan": "6.12.75",
              "status": "affected",
              "version": "6.12.64",
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            },
            {
              "lessThan": "6.18.14",
              "status": "affected",
              "version": "6.18.3",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/hwmon/ibmpex.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.19"
            },
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              "status": "unaffected",
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            },
            {
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              "status": "unaffected",
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            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.165",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.128",
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            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.75",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.14",
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            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.4",
              "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": "5.10.248",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "6.1.165",
                  "versionStartIncluding": "6.1.160",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.128",
                  "versionStartIncluding": "6.6.120",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.75",
                  "versionStartIncluding": "6.12.64",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.14",
                  "versionStartIncluding": "6.18.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.4",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRevert \"hwmon: (ibmpex) fix use-after-free in high/low store\"\n\nThis reverts commit 6946c726c3f4c36f0f049e6f97e88c510b15f65d.\n\nJean Delvare points out that the patch does not completely\nfix the reported problem, that it in fact introduces a\n(new) race condition, and that it may actually not be needed in\nthe first place.\n\nVarious AI reviews agree. Specific and relevant AI feedback:\n\n\"\nThis reordering sets the driver data to NULL before removing the sensor\nattributes in the loop below.\n\nibmpex_show_sensor() retrieves this driver data via dev_get_drvdata() but\ndoes not check if it is NULL before dereferencing it to access\ndata->sensors[].\n\nIf a userspace process reads a sensor file (like temp1_input) while this\ndelete function is running, could it race with the dev_set_drvdata(...,\nNULL) call here and crash in ibmpex_show_sensor()?\n\nWould it be safer to keep the original order where device_remove_file() is\ncalled before clearing the driver data? device_remove_file() should wait\nfor any active sysfs callbacks to complete, which might already prevent the\nuse-after-free this patch intends to fix.\n\"\n\nRevert the offending patch. If it can be shown that the originally reported\nalleged race condition does indeed exist, it can always be re-introduced\nwith a complete fix."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-27T12:17:29.426Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/05112ba67c824ab416cd54307c0b50aba9f0047a"
        },
        {
          "url": "https://git.kernel.org/stable/c/efd68429f23fb4015b0ebc2392334059e06fad18"
        },
        {
          "url": "https://git.kernel.org/stable/c/f448acd86835a650f9ea83460b9ca347d3aafba5"
        },
        {
          "url": "https://git.kernel.org/stable/c/914b47c9b824d3d74f31c764163edf93302100b1"
        },
        {
          "url": "https://git.kernel.org/stable/c/14a38784e09aebc21207dc32fffa05247fc3dd64"
        },
        {
          "url": "https://git.kernel.org/stable/c/894d9c7aab68fd0c70c78b1d03c8fa589fb0f67d"
        },
        {
          "url": "https://git.kernel.org/stable/c/8bde3e395a85017f12af2b0ba5c3684f5af9c006"
        }
      ],
      "title": "Revert \"hwmon: (ibmpex) fix use-after-free in high/low store\"",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-45914",
    "datePublished": "2026-05-27T12:17:29.426Z",
    "dateReserved": "2026-05-13T15:03:33.085Z",
    "dateUpdated": "2026-05-27T12:17:29.426Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}