CVE-2026-68175

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-68175", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-30T09:28:09.372Z", "datePublished": "2026-08-10T11:59:45.965Z", "dateUpdated": "2026-08-19T16:30:39.826Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-19T16:30:39.826Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix resource leak on mmiotrace trace_pipe close\n\nThe mmiotrace tracer was added May 12th 2008. At that time, resources\ncreated in pipe_open() could not be freed because there was not\npipe_close function pointer of the tracer. The pipe_close function pointer\nwas added in December 7th, 2009, but the mmiotrace tracer was not updated.\n\nmmio_pipe_open() allocates a header_iter and takes a pci_dev reference\nwhen trace_pipe is opened. mmio_close() frees them, but it was only\nwired to the tracer's .close callback.\n\ntracing_release_pipe() invokes .pipe_close, not .close, when the\ntrace_pipe file is released. As a result, closing trace_pipe with the\nmmiotrace tracer active leaked the header_iter allocation and left a\nstale pci_dev reference.\n\nSet .pipe_close to mmio_close, matching how function_graph wires both\ncallbacks to the same handler.\n\nNote, if the trace_pipe is read to completion, it will clean up the\nresources, but if one were to run:\n\n # head -n 1 /sys/kernel/tracing/trace_pipe\n VERSION 20070824\n\nOver and over again, it would trigger a massive leak."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/trace/trace_mmiotrace.c"], "versions": [{"version": "c521efd1700a8c0f7ce26f011f5eaecca17fabfa", "lessThan": "7871128ea41217fa6a58bbbcb44cb0d2e9e60966", "status": "affected", "versionType": "git"}, {"version": "c521efd1700a8c0f7ce26f011f5eaecca17fabfa", "lessThan": "1d0b59e2b203c02149d8f63607329debe36b3ec5", "status": "affected", "versionType": "git"}, {"version": "c521efd1700a8c0f7ce26f011f5eaecca17fabfa", "lessThan": "581ac13e12e77d6c64f8719083bdf95209308919", "status": "affected", "versionType": "git"}, {"version": "c521efd1700a8c0f7ce26f011f5eaecca17fabfa", "lessThan": "f9e6dfe341fb31c95b9655eb6b1db8b3ae090817", "status": "affected", "versionType": "git"}, {"version": "c521efd1700a8c0f7ce26f011f5eaecca17fabfa", "lessThan": "594e1cf3f736779a535873fd5988162d827bfe4f", "status": "affected", "versionType": "git"}, {"version": "c521efd1700a8c0f7ce26f011f5eaecca17fabfa", "lessThan": "cf5a82bef623b969a609f2b7e392d06dbae34aa6", "status": "affected", "versionType": "git"}, {"version": "c521efd1700a8c0f7ce26f011f5eaecca17fabfa", "lessThan": "cb459fec4f7b13caf646101ff076e94ef38434d8", "status": "affected", "versionType": "git"}, {"version": "c521efd1700a8c0f7ce26f011f5eaecca17fabfa", "lessThan": "c1d87e724ae55e781b7cc7ccafb34d9e668582b2", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/trace/trace_mmiotrace.c"], "versions": [{"version": "2.6.33", "status": "affected"}, {"version": "0", "lessThan": "2.6.33", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.265", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.216", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.183", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.148", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.101", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.42", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.6", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "5.10.265"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "5.15.216"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "6.1.183"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "6.6.148"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "6.12.101"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "6.18.42"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "7.1.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.33", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/7871128ea41217fa6a58bbbcb44cb0d2e9e60966"}, {"url": "https://git.kernel.org/stable/c/1d0b59e2b203c02149d8f63607329debe36b3ec5"}, {"url": "https://git.kernel.org/stable/c/581ac13e12e77d6c64f8719083bdf95209308919"}, {"url": "https://git.kernel.org/stable/c/f9e6dfe341fb31c95b9655eb6b1db8b3ae090817"}, {"url": "https://git.kernel.org/stable/c/594e1cf3f736779a535873fd5988162d827bfe4f"}, {"url": "https://git.kernel.org/stable/c/cf5a82bef623b969a609f2b7e392d06dbae34aa6"}, {"url": "https://git.kernel.org/stable/c/cb459fec4f7b13caf646101ff076e94ef38434d8"}, {"url": "https://git.kernel.org/stable/c/c1d87e724ae55e781b7cc7ccafb34d9e668582b2"}], "title": "tracing: Fix resource leak on mmiotrace trace_pipe close", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["kernel/trace/trace_mmiotrace.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "7871128ea41217fa6a58bbbcb44cb0d2e9e60966", "status": "affected", "version": "c521efd1700a8c0f7ce26f011f5eaecca17fabfa", "versionType": "git"}, {"lessThan": "1d0b59e2b203c02149d8f63607329debe36b3ec5", "status": "affected", "version": "c521efd1700a8c0f7ce26f011f5eaecca17fabfa", "versionType": "git"}, {"lessThan": "581ac13e12e77d6c64f8719083bdf95209308919", "status": "affected", "version": "c521efd1700a8c0f7ce26f011f5eaecca17fabfa", "versionType": "git"}, {"lessThan": "f9e6dfe341fb31c95b9655eb6b1db8b3ae090817", "status": "affected", "version": "c521efd1700a8c0f7ce26f011f5eaecca17fabfa", "versionType": "git"}, {"lessThan": "594e1cf3f736779a535873fd5988162d827bfe4f", "status": "affected", "version": "c521efd1700a8c0f7ce26f011f5eaecca17fabfa", "versionType": "git"}, {"lessThan": "cf5a82bef623b969a609f2b7e392d06dbae34aa6", "status": "affected", "version": "c521efd1700a8c0f7ce26f011f5eaecca17fabfa", "versionType": "git"}, {"lessThan": "cb459fec4f7b13caf646101ff076e94ef38434d8", "status": "affected", "version": "c521efd1700a8c0f7ce26f011f5eaecca17fabfa", "versionType": "git"}, {"lessThan": "c1d87e724ae55e781b7cc7ccafb34d9e668582b2", "status": "affected", "version": "c521efd1700a8c0f7ce26f011f5eaecca17fabfa", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["kernel/trace/trace_mmiotrace.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.33"}, {"lessThan": "2.6.33", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.265", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.216", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.183", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.148", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.101", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.42", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix resource leak on mmiotrace trace_pipe close\n\nThe mmiotrace tracer was added May 12th 2008. At that time, resources\ncreated in pipe_open() could not be freed because there was not\npipe_close function pointer of the tracer. The pipe_close function pointer\nwas added in December 7th, 2009, but the mmiotrace tracer was not updated.\n\nmmio_pipe_open() allocates a header_iter and takes a pci_dev reference\nwhen trace_pipe is opened. mmio_close() frees them, but it was only\nwired to the tracer's .close callback.\n\ntracing_release_pipe() invokes .pipe_close, not .close, when the\ntrace_pipe file is released. As a result, closing trace_pipe with the\nmmiotrace tracer active leaked the header_iter allocation and left a\nstale pci_dev reference.\n\nSet .pipe_close to mmio_close, matching how function_graph wires both\ncallbacks to the same handler.\n\nNote, if the trace_pipe is read to completion, it will clean up the\nresources, but if one were to run:\n\n # head -n 1 /sys/kernel/tracing/trace_pipe\n VERSION 20070824\n\nOver and over again, it would trigger a massive leak."}], "id": "CVE-2026-68175", "lastModified": "2026-08-19T17:20:33.950", "metrics": {}, "published": "2026-08-10T13:20:04.343", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1d0b59e2b203c02149d8f63607329debe36b3ec5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/581ac13e12e77d6c64f8719083bdf95209308919"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/594e1cf3f736779a535873fd5988162d827bfe4f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7871128ea41217fa6a58bbbcb44cb0d2e9e60966"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c1d87e724ae55e781b7cc7ccafb34d9e668582b2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cb459fec4f7b13caf646101ff076e94ef38434d8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cf5a82bef623b969a609f2b7e392d06dbae34aa6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f9e6dfe341fb31c95b9655eb6b1db8b3ae090817"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel: mmiotrace tracer resource leak leads to Denial of Service", "id": "2513227", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513227"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-763", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ntracing: Fix resource leak on mmiotrace trace_pipe close\nThe mmiotrace tracer was added May 12th 2008. At that time, resources\ncreated in pipe_open() could not be freed because there was not\npipe_close function pointer of the tracer. The pipe_close function pointer\nwas added in December 7th, 2009, but the mmiotrace tracer was not updated.\nmmio_pipe_open() allocates a header_iter and takes a pci_dev reference\nwhen trace_pipe is opened. mmio_close() frees them, but it was only\nwired to the tracer's .close callback.\ntracing_release_pipe() invokes .pipe_close, not .close, when the\ntrace_pipe file is released. As a result, closing trace_pipe with the\nmmiotrace tracer active leaked the header_iter allocation and left a\nstale pci_dev reference.\nSet .pipe_close to mmio_close, matching how function_graph wires both\ncallbacks to the same handler.\nNote, if the trace_pipe is read to completion, it will clean up the\nresources, but if one were to run:\n# head -n 1 /sys/kernel/tracing/trace_pipe\nVERSION 20070824\nOver and over again, it would trigger a massive leak.", "A flaw was found in the Linux kernel's `mmiotrace` tracer. A local user could repeatedly read from the `trace_pipe` file without fully completing the read operation. This improper handling of resource cleanup leads to a significant memory leak and leaves stale references. The continuous accumulation of these leaked resources can result in a Denial of Service (DoS) due to system instability or exhaustion of available memory."], "name": "CVE-2026-68175", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:enterprise_linux_nvidia:", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux for NVIDIA 26"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-08-10T11:59:45Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-68175\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-68175\nhttps://git.kernel.org/stable/c/594e1cf3f736779a535873fd5988162d827bfe4f\nhttps://git.kernel.org/stable/c/c1d87e724ae55e781b7cc7ccafb34d9e668582b2\nhttps://git.kernel.org/stable/c/cb459fec4f7b13caf646101ff076e94ef38434d8\nhttps://git.kernel.org/stable/c/cf5a82bef623b969a609f2b7e392d06dbae34aa6\nhttps://git.kernel.org/stable/c/f9e6dfe341fb31c95b9655eb6b1db8b3ae090817"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c521efd1700a8c0f7ce26f011f5eaecca17fabfa,f9e6dfe341fb31c95b9655eb6b1db8b3ae090817)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c521efd1700a8c0f7ce26f011f5eaecca17fabfa,594e1cf3f736779a535873fd5988162d827bfe4f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c521efd1700a8c0f7ce26f011f5eaecca17fabfa,cf5a82bef623b969a609f2b7e392d06dbae34aa6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c521efd1700a8c0f7ce26f011f5eaecca17fabfa,cb459fec4f7b13caf646101ff076e94ef38434d8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[c521efd1700a8c0f7ce26f011f5eaecca17fabfa,c1d87e724ae55e781b7cc7ccafb34d9e668582b2)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.6.33"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,2.6.33)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.148,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.101,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.42,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.6,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc5,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-10T14:45:18.125131+00:00", "updated": "2026-08-13T09:45:03.654306+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}