{"id":"CVE-2025-68376","revision":"826a1bcb39a84fd0989dc39139cc1115","records":[{"revision":"826a1bcb39a84fd0989dc39139cc1115","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-68376","aliases":[],"title":"coresight: ETR: Fix ETR buffer use-after-free issue","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncoresight: ETR: Fix ETR buffer use-after-free issue\n\nWhen ETR is enabled as CS_MODE_SYSFS, if the buffer size is changed\nand enabled again, currently sysfs_buf will point to the newly\nallocated memory(buf_new) and free the old memory(buf_old). But the\netr_buf that is being used by the ETR remains pointed to buf_old, not\nupdated to buf_new. In this case, it will result in a memory\nuse-after-free issue.\n\nFix this by checking ETR's mode before updating and releasing buf_old,\nif the mode is CS_MODE_SYSFS, then skip updating and releasing it.","state":0,"publishedAt":"2025-12-24T10:33:05.503+00:00","modifiedAt":"2026-10-21T12:38:21.502+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/hwtracing/coresight/coresight-tmc-etr.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"bd2767ec3df2775bc336f441f9068a989ccb919d\",\n                            \"lessThan\": \"5d5d130835b417c7bfd6c942f0149e34397d4463\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bd2767ec3df2775bc336f441f9068a989ccb919d\",\n                            \"lessThan\": \"4e83434247ff8005a0b9a1ee997864abf8f259ec\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bd2767ec3df2775bc336f441f9068a989ccb919d\",\n                            \"lessThan\": \"70acbc9c77686b7a521af6d7a543dcd9c324cf07\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bd2767ec3df2775bc336f441f9068a989ccb919d\",\n                            \"lessThan\": \"cda077a19f5c8d6ec61e5b97deca203d95e3a422\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bd2767ec3df2775bc336f441f9068a989ccb919d\",\n                            \"lessThan\": \"35501ac3c7d40a7bb9568c2f89d6b56beaf9bed3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"fdd3ceb0001da6768bede9779a0190a42e65c404\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6.5.8\",\n                            \"lessThan\": \"6.6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/hwtracing/coresight/coresight-tmc-etr.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.6\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.6\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.160\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.114\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.17.13\",\n                            \"lessThanOrEqual\": \"6.17.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.2\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.19\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/5d5d130835b417c7bfd6c942f0149e34397d4463","https://git.kernel.org/stable/c/4e83434247ff8005a0b9a1ee997864abf8f259ec","https://git.kernel.org/stable/c/70acbc9c77686b7a521af6d7a543dcd9c324cf07","https://git.kernel.org/stable/c/cda077a19f5c8d6ec61e5b97deca203d95e3a422","https://git.kernel.org/stable/c/35501ac3c7d40a7bb9568c2f89d6b56beaf9bed3"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-68376","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-68376","identifiers":["CVE-2025-68376"]},"retained":false,"historicalAffected":[]}],"coverage":[]}