CWE-667

Improper Locking

The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.

CVE-2023-3750 (GCVE-0-2023-3750)

Vulnerability from cvelistv5

Published

2023-07-24 15:19

Modified

2025-09-26 06:01

Severity ?

6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-667 - Improper Locking

Summary

A flaw was found in libvirt. The virStoragePoolObjListSearch function does not return a locked pool as expected, resulting in a race condition and denial of service when attempting to lock the same object from another thread. This issue could allow clients connecting to the read-only socket to crash the libvirt daemon.

References

▼	URL	Tags
	https://access.redhat.com/errata/RHSA-2023:6409	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/security/cve/CVE-2023-3750	vdb-entry, x_refsource_REDHAT
	https://bugzilla.redhat.com/show_bug.cgi?id=2222210	issue-tracking, x_refsource_REDHAT

Impacted products

Vendor

Product

Version

▼

Red Hat

Red Hat Enterprise Linux 9

Unaffected: 0:9.5.0-7.el9_3   < *
    cpe:/a:redhat:enterprise_linux:9::crb
    cpe:/a:redhat:enterprise_linux:9::appstream

Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 8 Advanced Virtualization	cpe:/a:redhat:advanced_virtualization:8::el8

Show details on NVD website

JSON

To clipboard

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CVE-2025-1221 (GCVE-0-2025-1221)

Vulnerability from cvelistv5

Published

2025-07-30 08:09

Modified

2025-07-30 13:40

Severity ?

5.9 (Medium) - CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CWE

CWE-667 - Improper Locking

Summary

A Zigbee Radio Co-Processor (RCP), which is using SiLabs EmberZNet Zigbee stack, was unable to send messages to the host system (CPCd) due to heavy Zigbee traffic, resulting in a Denial of Service (DoS) attack, Only hard reset will bring the device to normal operation

References

▼	URL	Tags
	https://www.silabs.com/documents/public/release-notes/emberznet-release-notes-7.4.4.0.pdf	release-notes
	https://www.silabs.com/documents/public/release-notes/emberznet-release-notes-8.0.2.0.pdf	release-notes
	https://www.silabs.com/documents/public/release-notes/emberznet-release-notes-8.1.0.0.pdf	release-notes
	https://community.silabs.com/068Vm00000Sadyn	vendor-advisory, permissions-required

Impacted products

Vendor

Product

Version

▼

silabs.com

Zigbee

Version: 0 ≤ 4.3.3
Version: 4.4.3 ≤

silabs.com

Zigbee

Version: 0 ≤ 2024.6.1

Show details on NVD website

JSON

To clipboard

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CVE-2025-20044 (GCVE-0-2025-20044)

Vulnerability from cvelistv5

Published

2025-08-12 17:29

Modified

2025-08-14 03:55

Severity ?

5.6 (Medium) - CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

CWE

Escalation of Privilege
CWE-667 - Improper Locking

Summary

Improper locking for some Intel(R) TDX Module firmware before version 1.5.13 may allow a privileged user to potentially enable escalation of privilege via local access.

References

▼	URL	Tags
	https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01245.html

Impacted products

	Vendor	Product	Version
	n/a	Intel(R) TDX Module firmware	Version: before version 1.5.13

Show details on NVD website

JSON

To clipboard

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CVE-2025-49178 (GCVE-0-2025-49178)

Vulnerability from cvelistv5

Published

2025-06-17 14:54

Modified

2025-09-25 18:28

Severity ?

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-667 - Improper Locking

Summary

A flaw was found in the X server's request handling. Non-zero 'bytes to ignore' in a client's request can cause the server to skip processing another client's request, potentially leading to a denial of service.

References

▼	URL	Tags
	https://access.redhat.com/errata/RHSA-2025:10258	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2025:10342	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2025:10343	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2025:10344	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2025:10346	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2025:10347	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2025:10348	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2025:10349	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2025:10350	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2025:10351	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2025:10352	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2025:10355	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2025:10356	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2025:10360	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2025:10370	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2025:10374	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2025:10375	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2025:10376	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2025:10377	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2025:10378	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2025:10381	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2025:10410	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2025:9303	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2025:9304	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2025:9305	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2025:9306	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2025:9392	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/errata/RHSA-2025:9964	vendor-advisory, x_refsource_REDHAT
	https://access.redhat.com/security/cve/CVE-2025-49178	vdb-entry, x_refsource_REDHAT
	https://bugzilla.redhat.com/show_bug.cgi?id=2369977	issue-tracking, x_refsource_REDHAT

Impacted products

Vendor

Product

Version

▼

Red Hat

Red Hat Enterprise Linux 10

Unaffected: 0:24.1.5-4.el10_0 < *
cpe:/o:redhat:enterprise_linux:10.0

Red Hat	Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION	Unaffected: 0:1.1.0-25.el6_10.1 < * cpe:/o:redhat:rhel_els:6
Red Hat	Red Hat Enterprise Linux 7.7 Advanced Update Support	Unaffected: 0:1.8.0-17.el7_7.1 < * cpe:/o:redhat:rhel_aus:7.7::server
Red Hat	Red Hat Enterprise Linux 7 Extended Lifecycle Support	Unaffected: 0:1.20.4-32.el7_9 < * cpe:/o:redhat:rhel_els:7
Red Hat	Red Hat Enterprise Linux 7 Extended Lifecycle Support	Unaffected: 0:1.8.0-36.el7_9.2 < * cpe:/o:redhat:rhel_els:7
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 0:1.20.11-26.el8_10 < * cpe:/a:redhat:enterprise_linux:8::appstream cpe:/a:redhat:enterprise_linux:8::crb
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 0:21.1.3-18.el8_10 < * cpe:/a:redhat:enterprise_linux:8::appstream cpe:/a:redhat:enterprise_linux:8::crb
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 0:1.15.0-7.el8_10 < * cpe:/a:redhat:enterprise_linux:8::appstream
Red Hat	Red Hat Enterprise Linux 8.2 Advanced Update Support	Unaffected: 0:1.9.0-15.el8_2.14 < * cpe:/a:redhat:rhel_aus:8.2::appstream
Red Hat	Red Hat Enterprise Linux 8.2 Advanced Update Support	Unaffected: 0:1.20.6-4.el8_2 < * cpe:/a:redhat:rhel_aus:8.2::appstream
Red Hat	Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support	Unaffected: 0:1.20.10-2.el8_4 < * cpe:/a:redhat:rhel_eus_long_life:8.4::appstream cpe:/a:redhat:rhel_aus:8.4::appstream
Red Hat	Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support	Unaffected: 0:1.11.0-8.el8_4.13 < * cpe:/a:redhat:rhel_eus_long_life:8.4::appstream cpe:/a:redhat:rhel_aus:8.4::appstream
Red Hat	Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On	Unaffected: 0:1.20.10-2.el8_4 < * cpe:/a:redhat:rhel_eus_long_life:8.4::appstream cpe:/a:redhat:rhel_aus:8.4::appstream
Red Hat	Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On	Unaffected: 0:1.11.0-8.el8_4.13 < * cpe:/a:redhat:rhel_eus_long_life:8.4::appstream cpe:/a:redhat:rhel_aus:8.4::appstream
Red Hat	Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support	Unaffected: 0:1.12.0-6.el8_6.14 < * cpe:/a:redhat:rhel_e4s:8.6::appstream cpe:/a:redhat:rhel_aus:8.6::appstream cpe:/a:redhat:rhel_tus:8.6::appstream cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
Red Hat	Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support	Unaffected: 0:21.1.3-2.el8_6.4 < * cpe:/a:redhat:rhel_e4s:8.6::appstream cpe:/a:redhat:rhel_aus:8.6::appstream cpe:/a:redhat:rhel_tus:8.6::appstream cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
Red Hat	Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support	Unaffected: 0:1.20.11-5.el8_6.3 < * cpe:/a:redhat:rhel_e4s:8.6::appstream cpe:/a:redhat:rhel_aus:8.6::appstream cpe:/a:redhat:rhel_tus:8.6::appstream
Red Hat	Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On	Unaffected: 0:1.12.0-6.el8_6.14 < * cpe:/a:redhat:rhel_e4s:8.6::appstream cpe:/a:redhat:rhel_aus:8.6::appstream cpe:/a:redhat:rhel_tus:8.6::appstream cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
Red Hat	Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On	Unaffected: 0:21.1.3-2.el8_6.4 < * cpe:/a:redhat:rhel_e4s:8.6::appstream cpe:/a:redhat:rhel_aus:8.6::appstream cpe:/a:redhat:rhel_tus:8.6::appstream cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
Red Hat	Red Hat Enterprise Linux 8.6 Telecommunications Update Service	Unaffected: 0:1.12.0-6.el8_6.14 < * cpe:/a:redhat:rhel_e4s:8.6::appstream cpe:/a:redhat:rhel_aus:8.6::appstream cpe:/a:redhat:rhel_tus:8.6::appstream cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
Red Hat	Red Hat Enterprise Linux 8.6 Telecommunications Update Service	Unaffected: 0:21.1.3-2.el8_6.4 < * cpe:/a:redhat:rhel_e4s:8.6::appstream cpe:/a:redhat:rhel_aus:8.6::appstream cpe:/a:redhat:rhel_tus:8.6::appstream cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
Red Hat	Red Hat Enterprise Linux 8.6 Telecommunications Update Service	Unaffected: 0:1.20.11-5.el8_6.3 < * cpe:/a:redhat:rhel_e4s:8.6::appstream cpe:/a:redhat:rhel_aus:8.6::appstream cpe:/a:redhat:rhel_tus:8.6::appstream
Red Hat	Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions	Unaffected: 0:1.12.0-6.el8_6.14 < * cpe:/a:redhat:rhel_e4s:8.6::appstream cpe:/a:redhat:rhel_aus:8.6::appstream cpe:/a:redhat:rhel_tus:8.6::appstream cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
Red Hat	Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions	Unaffected: 0:21.1.3-2.el8_6.4 < * cpe:/a:redhat:rhel_e4s:8.6::appstream cpe:/a:redhat:rhel_aus:8.6::appstream cpe:/a:redhat:rhel_tus:8.6::appstream cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
Red Hat	Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions	Unaffected: 0:1.20.11-5.el8_6.3 < * cpe:/a:redhat:rhel_e4s:8.6::appstream cpe:/a:redhat:rhel_aus:8.6::appstream cpe:/a:redhat:rhel_tus:8.6::appstream
Red Hat	Red Hat Enterprise Linux 8.8 Extended Update Support Long-Life Add-On	Unaffected: 0:1.20.11-16.el8_8 < * cpe:/a:redhat:rhel_tus:8.8::appstream cpe:/a:redhat:rhel_eus_long_life:8.8::appstream cpe:/a:redhat:rhel_e4s:8.8::appstream
Red Hat	Red Hat Enterprise Linux 8.8 Extended Update Support Long-Life Add-On	Unaffected: 0:21.1.3-11.el8_8 < * cpe:/a:redhat:rhel_tus:8.8::appstream cpe:/a:redhat:rhel_eus_long_life:8.8::appstream cpe:/a:redhat:rhel_e4s:8.8::appstream
Red Hat	Red Hat Enterprise Linux 8.8 Telecommunications Update Service	Unaffected: 0:1.20.11-16.el8_8 < * cpe:/a:redhat:rhel_tus:8.8::appstream cpe:/a:redhat:rhel_eus_long_life:8.8::appstream cpe:/a:redhat:rhel_e4s:8.8::appstream
Red Hat	Red Hat Enterprise Linux 8.8 Telecommunications Update Service	Unaffected: 0:1.12.0-15.el8_8.14 < * cpe:/a:redhat:rhel_tus:8.8::appstream cpe:/a:redhat:rhel_e4s:8.8::appstream
Red Hat	Red Hat Enterprise Linux 8.8 Telecommunications Update Service	Unaffected: 0:21.1.3-11.el8_8 < * cpe:/a:redhat:rhel_tus:8.8::appstream cpe:/a:redhat:rhel_eus_long_life:8.8::appstream cpe:/a:redhat:rhel_e4s:8.8::appstream
Red Hat	Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions	Unaffected: 0:1.20.11-16.el8_8 < * cpe:/a:redhat:rhel_tus:8.8::appstream cpe:/a:redhat:rhel_eus_long_life:8.8::appstream cpe:/a:redhat:rhel_e4s:8.8::appstream
Red Hat	Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions	Unaffected: 0:1.12.0-15.el8_8.14 < * cpe:/a:redhat:rhel_tus:8.8::appstream cpe:/a:redhat:rhel_e4s:8.8::appstream
Red Hat	Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions	Unaffected: 0:21.1.3-11.el8_8 < * cpe:/a:redhat:rhel_tus:8.8::appstream cpe:/a:redhat:rhel_eus_long_life:8.8::appstream cpe:/a:redhat:rhel_e4s:8.8::appstream
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 0:1.20.11-31.el9_6 < * cpe:/a:redhat:enterprise_linux:9::appstream cpe:/a:redhat:enterprise_linux:9::crb
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 0:23.2.7-4.el9_6 < * cpe:/a:redhat:enterprise_linux:9::appstream cpe:/a:redhat:enterprise_linux:9::crb
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 0:1.14.1-8.el9_6 < * cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat	Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions	Unaffected: 0:21.1.3-3.el9_0 < * cpe:/a:redhat:rhel_e4s:9.0::appstream
Red Hat	Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions	Unaffected: 0:1.20.11-11.el9_0 < * cpe:/a:redhat:rhel_e4s:9.0::appstream
Red Hat	Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions	Unaffected: 0:1.11.0-22.el9_0.15 < * cpe:/a:redhat:rhel_e4s:9.0::appstream
Red Hat	Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions	Unaffected: 0:21.1.3-8.el9_2 < * cpe:/a:redhat:rhel_e4s:9.2::appstream
Red Hat	Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions	Unaffected: 0:1.20.11-18.el9_2 < * cpe:/a:redhat:rhel_e4s:9.2::appstream
Red Hat	Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions	Unaffected: 0:1.12.0-14.el9_2.12 < * cpe:/a:redhat:rhel_e4s:9.2::appstream
Red Hat	Red Hat Enterprise Linux 9.4 Extended Update Support	Unaffected: 0:22.1.9-6.el9_4 < * cpe:/a:redhat:rhel_eus:9.4::appstream
Red Hat	Red Hat Enterprise Linux 9.4 Extended Update Support	Unaffected: 0:1.20.11-26.el9_4 < * cpe:/a:redhat:rhel_eus:9.4::appstream cpe:/a:redhat:rhel_eus:9.4::crb
Red Hat	Red Hat Enterprise Linux 9.4 Extended Update Support	Unaffected: 0:1.13.1-8.el9_4.7 < * cpe:/a:redhat:rhel_eus:9.4::appstream
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-49178",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-06-17T15:05:17.851006Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-06-17T15:05:29.353Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:10.0"
          ],
          "defaultStatus": "affected",
          "packageName": "xorg-x11-server-Xwayland",
          "product": "Red Hat Enterprise Linux 10",
          "vendor": "Red Hat",
          "versions": [
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              "status": "unaffected",
              "version": "0:24.1.5-4.el10_0",
              "versionType": "rpm"
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          ]
        },
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          "cpes": [
            "cpe:/o:redhat:rhel_els:6"
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          "defaultStatus": "affected",
          "packageName": "tigervnc",
          "product": "Red Hat Enterprise Linux 6 Extended Lifecycle Support  - EXTENSION",
          "vendor": "Red Hat",
          "versions": [
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              "version": "0:1.1.0-25.el6_10.1",
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          "cpes": [
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          "product": "Red Hat Enterprise Linux 7.7 Advanced Update Support",
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          "packageName": "xorg-x11-server",
          "product": "Red Hat Enterprise Linux 8",
          "vendor": "Red Hat",
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              "status": "unaffected",
              "version": "0:1.20.11-26.el8_10",
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        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
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            "cpe:/a:redhat:enterprise_linux:8::crb"
          ],
          "defaultStatus": "affected",
          "packageName": "xorg-x11-server-Xwayland",
          "product": "Red Hat Enterprise Linux 8",
          "vendor": "Red Hat",
          "versions": [
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              "status": "unaffected",
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          "product": "Red Hat Enterprise Linux 8",
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          "packageName": "tigervnc",
          "product": "Red Hat Enterprise Linux 8.2 Advanced Update Support",
          "vendor": "Red Hat",
          "versions": [
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              "status": "unaffected",
              "version": "0:1.9.0-15.el8_2.14",
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        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_aus:8.2::appstream"
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          "defaultStatus": "affected",
          "packageName": "xorg-x11-server",
          "product": "Red Hat Enterprise Linux 8.2 Advanced Update Support",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.20.6-4.el8_2",
              "versionType": "rpm"
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          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream",
            "cpe:/a:redhat:rhel_aus:8.4::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "xorg-x11-server",
          "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support",
          "vendor": "Red Hat",
          "versions": [
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          "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support",
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              "version": "0:1.20.10-2.el8_4",
              "versionType": "rpm"
            }
          ]
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        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream",
            "cpe:/a:redhat:rhel_aus:8.4::appstream"
          ],
          "defaultStatus": "affected",
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          "product": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.11.0-8.el8_4.13",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_e4s:8.6::appstream",
            "cpe:/a:redhat:rhel_aus:8.6::appstream",
            "cpe:/a:redhat:rhel_tus:8.6::appstream",
            "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"
          ],
          "defaultStatus": "affected",
          "packageName": "tigervnc",
          "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:1.12.0-6.el8_6.14",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhel_e4s:8.6::appstream",
            "cpe:/a:redhat:rhel_aus:8.6::appstream",
            "cpe:/a:redhat:rhel_tus:8.6::appstream",
            "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"
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      "timeline": [
        {
          "lang": "en",
          "time": "2025-06-03T10:00:49.274000+00:00",
          "value": "Reported to Red Hat."
        },
        {
          "lang": "en",
          "time": "2025-06-17T00:00:00+00:00",
          "value": "Made public."
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      ],
      "title": "Xorg-x11-server-xwayland: xorg-x11-server: tigervnc: unprocessed client request due to bytes to ignore",
      "workarounds": [
        {
          "lang": "en",
          "value": "Mitigation for this issue is either not available or the currently available options don\u0027t meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."
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      "x_redhatCweChain": "CWE-667: Improper Locking"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2025-49178",
    "datePublished": "2025-06-17T14:54:42.646Z",
    "dateReserved": "2025-06-03T05:38:02.947Z",
    "dateUpdated": "2025-09-25T18:28:12.515Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Mitigation

Phase: Implementation

Strategy: Libraries or Frameworks

Description:

Use industry standard APIs to implement locking mechanism.

CAPEC-25: Forced Deadlock

The adversary triggers and exploits a deadlock condition in the target software to cause a denial of service. A deadlock can occur when two or more competing actions are waiting for each other to finish, and thus neither ever does. Deadlock conditions can be difficult to detect.

CAPEC-26: Leveraging Race Conditions

The adversary targets a race condition occurring when multiple processes access and manipulate the same resource concurrently, and the outcome of the execution depends on the particular order in which the access takes place. The adversary can leverage a race condition by "running the race", modifying the resource and modifying the normal execution flow. For instance, a race condition can occur while accessing a file: the adversary can trick the system by replacing the original file with their version and cause the system to read the malicious file.

CAPEC-27: Leveraging Race Conditions via Symbolic Links

This attack leverages the use of symbolic links (Symlinks) in order to write to sensitive files. An attacker can create a Symlink link to a target file not otherwise accessible to them. When the privileged program tries to create a temporary file with the same name as the Symlink link, it will actually write to the target file pointed to by the attackers' Symlink link. If the attacker can insert malicious content in the temporary file they will be writing to the sensitive file by using the Symlink. The race occurs because the system checks if the temporary file exists, then creates the file. The attacker would typically create the Symlink during the interval between the check and the creation of the temporary file.

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