CVE-2026-80777

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-80777", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-26T14:34:25.792Z", "datePublished": "2026-09-04T15:12:49.215Z", "dateUpdated": "2026-10-19T08:43:32.707Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:43:32.707Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfutex/pi: Plug private futex exec() race\n\nThe check for private futexes whether the waiter's mm, which is stored in\nthe futex_key and copied into the pi_state, is the same as the owner's mm\nis not sufficient for exec(). exec() has a gap where the mm check fails to\ngive the correct answer:\n\n exec()\n ...\n exec_release_mm()\n futex_exec_release()\n tsk::futex::exit_state = EXITING;\n cleanup_robust_list();\n1) tsk::futex::exit_state = OK;\n ...\n old_mm = tsk::mm;\n2) tsk::mm = ->mm;\n\nBetween #1 and #2 the check for the mm is wrong as that mm is about to be\nswapped out and eventually freed.\n\nPlug this gap by:\n\n 1) Setting tsk::futex::exit_state to FUTEX_STATE_DEAD in\n futex_exec_release()\n\n 2) Setting tsk::futex::exit_state to FUTEX_STATE_OK after\n the mm has been switched.\n\nFrom a futex point of view the task is dead after it finished the robust\nlist cleanup up to the point where it sets the state to OK again."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/exec.c", "include/linux/futex.h", "kernel/futex/core.c", "kernel/futex/pi.c"], "versions": [{"version": "80367ad01d93ac781b0e1df246edaf006928002f", "lessThan": "fdf538b2e69653ff740e84042245018e5680cd7b", "status": "affected", "versionType": "git"}, {"version": "80367ad01d93ac781b0e1df246edaf006928002f", "lessThan": "0478bc6bf197629fea0331d65b39eeea043c6cf0", "status": "affected", "versionType": "git"}, {"version": "80367ad01d93ac781b0e1df246edaf006928002f", "lessThan": "d7944cee62ec6cca1c90780a766960a57d3b4bb8", "status": "affected", "versionType": "git"}, {"version": "80367ad01d93ac781b0e1df246edaf006928002f", "lessThan": "c5f0bc9fd1cec4a00400cc727fcde03e0fde17cc", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/exec.c", "include/linux/futex.h", "kernel/futex/core.c", "kernel/futex/pi.c"], "versions": [{"version": "6.16", "status": "affected"}, {"version": "0", "lessThan": "6.16", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.47", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.11", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.1", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "6.16", "versionEndExcluding": "6.18.47"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.16", "versionEndExcluding": "7.1.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.16", "versionEndExcluding": "7.2.1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.16", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/fdf538b2e69653ff740e84042245018e5680cd7b"}, {"url": "https://git.kernel.org/stable/c/0478bc6bf197629fea0331d65b39eeea043c6cf0"}, {"url": "https://git.kernel.org/stable/c/d7944cee62ec6cca1c90780a766960a57d3b4bb8"}, {"url": "https://git.kernel.org/stable/c/c5f0bc9fd1cec4a00400cc727fcde03e0fde17cc"}], "title": "futex/pi: Plug private futex exec() race", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/exec.c", "include/linux/futex.h", "kernel/futex/core.c", "kernel/futex/pi.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "fdf538b2e69653ff740e84042245018e5680cd7b", "status": "affected", "version": "80367ad01d93ac781b0e1df246edaf006928002f", "versionType": "git"}, {"lessThan": "0478bc6bf197629fea0331d65b39eeea043c6cf0", "status": "affected", "version": "80367ad01d93ac781b0e1df246edaf006928002f", "versionType": "git"}, {"lessThan": "d7944cee62ec6cca1c90780a766960a57d3b4bb8", "status": "affected", "version": "80367ad01d93ac781b0e1df246edaf006928002f", "versionType": "git"}, {"lessThan": "c5f0bc9fd1cec4a00400cc727fcde03e0fde17cc", "status": "affected", "version": "80367ad01d93ac781b0e1df246edaf006928002f", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/exec.c", "include/linux/futex.h", "kernel/futex/core.c", "kernel/futex/pi.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.16"}, {"lessThan": "6.16", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.47", "versionType": "semver"}, {"lessThanOrEqual": "7.1.*", "status": "unaffected", "version": "7.1.11", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.1", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "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\nfutex/pi: Plug private futex exec() race\n\nThe check for private futexes whether the waiter's mm, which is stored in\nthe futex_key and copied into the pi_state, is the same as the owner's mm\nis not sufficient for exec(). exec() has a gap where the mm check fails to\ngive the correct answer:\n\n exec()\n ...\n exec_release_mm()\n futex_exec_release()\n tsk::futex::exit_state = EXITING;\n cleanup_robust_list();\n1) tsk::futex::exit_state = OK;\n ...\n old_mm = tsk::mm;\n2) tsk::mm = ->mm;\n\nBetween #1 and #2 the check for the mm is wrong as that mm is about to be\nswapped out and eventually freed.\n\nPlug this gap by:\n\n 1) Setting tsk::futex::exit_state to FUTEX_STATE_DEAD in\n futex_exec_release()\n\n 2) Setting tsk::futex::exit_state to FUTEX_STATE_OK after\n the mm has been switched.\n\nFrom a futex point of view the task is dead after it finished the robust\nlist cleanup up to the point where it sets the state to OK again."}], "id": "CVE-2026-80777", "lastModified": "2026-10-19T09:17:11.790", "metrics": {}, "published": "2026-09-04T16:18:03.373", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0478bc6bf197629fea0331d65b39eeea043c6cf0"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c5f0bc9fd1cec4a00400cc727fcde03e0fde17cc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d7944cee62ec6cca1c90780a766960a57d3b4bb8"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fdf538b2e69653ff740e84042245018e5680cd7b"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[80367ad01d93ac781b0e1df246edaf006928002f,fdf538b2e69653ff740e84042245018e5680cd7b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[80367ad01d93ac781b0e1df246edaf006928002f,0478bc6bf197629fea0331d65b39eeea043c6cf0)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[80367ad01d93ac781b0e1df246edaf006928002f,d7944cee62ec6cca1c90780a766960a57d3b4bb8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[80367ad01d93ac781b0e1df246edaf006928002f,c5f0bc9fd1cec4a00400cc727fcde03e0fde17cc)"}}], "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": "generic", "value": "6.16"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,6.16)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.47,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.11,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.1,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "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": "2026-09-04T17:15:14.591270+00:00", "updated": "2026-09-04T17:30:17.632898+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-362", "CWE-416"]}