{"id":"CVE-2023-53261","title":"coresight: Fix memory leak in acpi_buffer->pointer","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ncoresight: Fix memory leak in acpi_buffer->pointer\n\nThere are memory leaks reported by kmemleak:\n...\nunreferenced object 0xffff00213c141000 (size 1024):\n  comm \"systemd…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"adp","vendor":"Linux","product":"Linux","affected":["Linux >= 76ffa5ab5b79c250b9744b7f8bdd835db426a1ae < 10bbb7efcad40a06d7acfc0a14af21c19b496eff","Linux >= 76ffa5ab5b79c250b9744b7f8bdd835db426a1ae < d1b60e7c9fee34eaedf1fc4e0471f75b33f83a4a","Linux >= 76ffa5ab5b79c250b9744b7f8bdd835db426a1ae < 1a9e02673e2550f5612099e64e8761f0c8fc0f50","Linux 5.3"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-01-14T18:02:51.752323Z"},"published":"2025-09-15","updated":"2026-10-30","sourceUpdated":"2026-10-30T12:17:28.351Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-53261","references":[{"url":"https://git.kernel.org/stable/c/10bbb7efcad40a06d7acfc0a14af21c19b496eff"},{"url":"https://git.kernel.org/stable/c/d1b60e7c9fee34eaedf1fc4e0471f75b33f83a4a"},{"url":"https://git.kernel.org/stable/c/1a9e02673e2550f5612099e64e8761f0c8fc0f50"}],"tags":["cve.org"],"epss":0.00146,"epssPercentile":0.03895,"ingestedAt":"2026-11-03T11:43:15.785Z","slug":"CVE-2023-53261","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ncoresight: Fix memory leak in acpi_buffer->pointer\n\nThere are memory leaks reported by kmemleak:\n...\nunreferenced object 0xffff00213c141000 (size 1024):\n  comm \"systemd-udevd\", pid 2123, jiffies 4294909467 (age 6062.160s)\n  hex dump (first 32 bytes):\n    04 00 00 00 02 00 00 00 18 10 14 3c 21 00 ff ff  ...........<!...\n    00 00 00 00 00 00 00 00 03 00 00 00 10 00 00 00  ................\n  backtrace:\n    [<000000004b7c9001>] __kmem_cache_alloc_node+0x2f8/0x348\n    [<00000000b0fc7ceb>] __kmalloc+0x58/0x108\n    [<0000000064ff4695>] acpi_os_allocate+0x2c/0x68\n    [<000000007d57d116>] acpi_ut_initialize_buffer+0x54/0xe0\n    [<0000000024583908>] acpi_evaluate_object+0x388/0x438\n    [<0000000017b2e72b>] acpi_evaluate_object_typed+0xe8/0x240\n    [<000000005df0eac2>] coresight_get_platform_data+0x1b4/0x988 [coresight]\n...\n\nThe ACPI buffer memory (buf.pointer) should be freed. But the buffer\nis also used after returning from acpi_get_dsd_graph().\nMove the temporary variables buf to acpi_coresight_parse_graph(),\nand free it before the function return to prevent memory leak.\n\n## Affected\n\n- `Linux >= 76ffa5ab5b79c250b9744b7f8bdd835db426a1ae < 10bbb7efcad40a06d7acfc0a14af21c19b496eff`\n- `Linux >= 76ffa5ab5b79c250b9744b7f8bdd835db426a1ae < d1b60e7c9fee34eaedf1fc4e0471f75b33f83a4a`\n- `Linux >= 76ffa5ab5b79c250b9744b7f8bdd835db426a1ae < 1a9e02673e2550f5612099e64e8761f0c8fc0f50`\n- `Linux 5.3`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}